Document:

EX-10.12

 Exhibit 10.12 
 THE CLARK BUILDING 
 Cambridge, Massachusetts 

LANDLORD 
  

 
 THIRTY-EIGHT
SIDNEY STREET LIMITED PARTNERSHIP 
 TENANT 

 
  

AGIOS PHARMACEUTICALS, INC. 

 THE CLARK BUILDING 
 Table of Contents 
  

					
	 	  	Page	 
	 ARTICLE 1 RECITALS AND DEFINITIONS
	  	 	1	  
		
	 Section 1.1 - Recitals
	  	 	1	  
		
	 Section 1.2 - Definitions
	  	 	1	  
		
	 ARTICLE II PREMISES AND TERM
	  	 	2	  
		
	 Section 2.1 - Premises
	  	 	2	  
		
	 Section 2.2 - Appurtenant Rights
	  	 	3	  
		
	 Section 2.3 - Landlord’s Reservations
	  	 	3	  
		
	 Section 2.4 - Parking
	  	 	4	  
		
	 Section 2.5 - Commencement Date
	  	 	5	  
		
	 ARTICLE III RENT AND OTHER PAYMENTS
	  	 	7	  
		
	 Section 3.1 - Annual Fixed Rent
	  	 	7	  
		
	 Section 3.2 - Real Estate Taxes
	  	 	7	  
		
	 Section 3.3 - Operating Expenses
	  	 	9	  
		
	 Section 3.4 - Other Utility Charges
	  	 	12	  
		
	 Section 3.5 - Above-standard Services
	  	 	12	  
		
	 Section 3.6 - No Offsets
	  	 	12	  
		
	 Section 3.7 - Net Lease
	  	 	12	  
		
	 ARTICLE IV ALTERATIONS
	  	 	12	  
		
	 Section 4.1- Consent Required for Tenant’s Alterations
	  	 	12	  
		
	 Section 4.2 - Ownership of Alterations
	  	 	13	  
		
	 Section 4.3 - Construction Requirements for Alterations
	  	 	13	  
		
	 Section 4.4 - Payment for Tenant Alterations
	  	 	14	  
		
	 ARTICLE V RESPONSIBILITY FOR CONDITION OF BUILDING AND PREMISES
	  	 	15	  
		
	 Section 5.1 - Maintenance of Building and Common Areas by Landlord
	  	 	15	  
		
	 Section 5.2 - Maintenance of Premises by Tenant
	  	 	15	  
		
	 Section 5.3 - Delays in Landlord’s Services
	  	 	16	  
		
	 ARTICLE VI TENANT COVENANTS
	  	 	17	  
		
	 Section 6.1 - Permitted Uses
	  	 	17	  
		
	 Section 6.2 - Laws and Regulations
	  	 	18	  

					
	 Section 6.3 - Rules and Regulations
	  	 	18	  
		
	 Section 6.4 - Safety Compliance
	  			
		
	 Section 6.5 - Landlord’s Entry
	  	 	19	  
		
	 Section 6.6 - Floor Load
	  	 	19	  
		
	 Section 6.7 - Personal Property Tax
	  	 	19	  
		
	 Section 6.8 - Assignment and Subleases
	  	 	19	  
		
	 ARTICLE VII INDEMNITY AND INSURANCE
	  	 	21	  
		
	 Section 7.1 - Indemnity
	  	 	21	  
		
	 Section 7.2 - Liability Insurance
	  	 	22	  
		
	 Section 7.3 - Personal Property at Risk
	  	 	23	  
		
	 Section 7.4 - Landlord’s Insurance
	  	 	23	  
		
	 Section 7.5 - Waiver of Subrogation
	  	 	23	  
		
	 ARTICLE VIII CASUALTY AND EMINENT DOMAIN
	  	 	24	  
		
	 Section 8.1 - Restoration Following Casualties
	  	 	24	  
		
	 Section 8.2 - Landlord’s Termination Election
	  	 	24	  
		
	 Section 8.3 - Tenant’s Termination Election
	  	 	24	  
		
	 Section 8.4 - Casualty at Expiration of Lease
	  	 	25	  
		
	 Section 8.5 - Eminent Domain
	  	 	25	  
		
	 Section 8.6 - Rent After Casualty or Taking
	  	 	25	  
		
	 Section 8.7 - Taking Award
	  	 	25	  
		
	 ARTICLE IX DEFAULT
	  	 	26	  
		
	 Section 9.1 - Tenant’s Default
	  	 	26	  
		
	 Section 9.2 - Damages
	  	 	27	  
		
	 Section 9.3 - Cumulative Rights
	  	 	27	  
		
	 Section 9.4 - Landlord’s Self-help
	  	 	27	  
		
	 Section 9.5 - Enforcement Expenses; Litigation
	  	 	28	  
		
	 Section 9.6 - Interest on Overdue Payments
	  	 	28	  
		
	 Section 9.7 - Landlord’s Right to Notice and Cure
	  	 	28	  
		
	 ARTICLE X MORTGAGEES’ AND GROUND LESSORS’ RIGHTS
	  	 	29	  
		
	 Section 10.1 - Subordination
	  	 	29	  
		
	 Section 10.2 - Prepayment of Rent not to Bind Mortgagee
	  	 	29	  
		
	 Section 10.3 - Tenant’s Duty to Notify Mortgagee; Mortgagee’s Ability to Cure
	  	 	29	  
		
	 Section 10.4 - Estoppel Certificates
	  	 	29	  

  
 (ii)

					
	 ARTICLE XI MISCELLANEOUS
	  	 	31	  
		
	 Section 11.1 - Notice of Lease
	  	 	31	  
		
	 Section 11.2 - Notices
	  	 	31	  
		
	 Section 11.3 - Authority
	  	 	31	  
		
	 Section 11.4 - Successors and Limitation on Liability on the Landlord
	  	 	31	  
		
	 Section 11.5 - Waivers by the Landlord
	  	 	32	  
		
	 Section 11.6 - Acceptance of Partial Payments of Rent
	  	 	32	  
		
	 Section 11.7 - Interpretation and Partial Invalidity
	  	 	32	  
		
	 Section 11.8 - Quiet Enjoyment
	  	 	32	  
		
	 Section 11.9 - Brokerage
	  	 	33	  
		
	 Section 11.10 - Surrender of Premises and Holding Over
	  	 	33	  
		
	 Section 11.11 - Ground Lease
	  	 	34	  
		
	 Section 11.12 - Security Deposit
	  	 	34	  
		
	 Section 11.13 - Financial Reporting
	  	 	35	  
		
	 Section 11.14 - Cambridge Employment Plan
	  	 	35	  
		
	 Section 11.15 - Parking and Transportation Demand Management
	  	 	35	  
		
	 Section 11.16 - Cancellation of Previous Lease
	  	 	36	  

  

	
	 EXHIBIT A - Basic Lease Terms

	 EXHIBIT B - Floor Plans Showing Premises

	 EXHIBIT C - Standard Services

	 EXHIBIT D - Rules and Regulations

	 EXHIBIT E - Work Letter

	 EXHIBIT F - Construction Rules and Regulations

  
 (iii)

 LEASE 
 ARTICLE I 
 RECITALS AND DEFINITIONS 

Section 1.1 - Recitals. 
 This Lease (this “Lease”) is entered into as of August 2, 2010, by and between THIRTY-EIGHT SIDNEY STREET LIMITED PARTNERSHIP, a Delaware limited partnership (the “Landlord”) and
AGIOS PHARMACEUTICALS, INC., a Delaware corporation (“Tenant”). 
 In consideration of the mutual covenants herein set
forth, the Landlord and the Tenant do hereby agree to the terms and conditions set forth in this Lease. 
 Section 1.2 -
Definitions. 
 The following terms shall have the meanings indicated or referred to below: 

“Additional Rent” means all charges payable by the Tenant pursuant to this Lease other than Annual Fixed Rent, including
without implied limitation the Tenant’s parking charges as provided in Section 2.4; the Tenant’s Tax Expense Allocable to the Premises as provided in Section 3.2; the Tenant’s Operating Expenses Allocable to the Premises in
accordance with Section 3.3; amounts payable for special services pursuant to Section 3.5; the Landlord’s share of any sublease or assignment proceeds pursuant to Section 6.8. 

“Annual Fixed Rent” - See Exhibit A and Section 3.1. 

“Building” means The Clark Building located at 38 Sidney Street, Cambridge, Massachusetts in which the Premises are located.

 “Commencement Date” - See Section 2.5. 

“Common Building Areas” means those portions of the Building which are not part of the Premises and to which the Tenant has
appurtenant rights pursuant to Section 2.2. 
 “External Causes” means collectively, (i) Acts of God, war,
civil commotion, fire, flood or other casualty, strikes or other extraordinary labor difficulties, shortages of labor or materials or equipment in the ordinary course of trade, government order or regulations or other cause not reasonably within the
Landlord’s or Tenant’s control and not due to the fault or neglect of the Landlord or Tenant. 
 “Lease
Year” means each period of one year during the Term commencing on the Commencement Date or on any anniversary thereof. 

“Permitted Uses” - See Exhibit A. 

 “Premises” means approximately 38,536 rentable square feet as defined in Exhibit
A. See Exhibit A, Exhibit B and Section 2.1. 
 “Property” means, collectively, the Building and the parcel of
land on which the Building sits. 
 “Term” - See Exhibit A. 

“University Park” means the area in Cambridge, Massachusetts, bounded on the North side by Massachusetts Avenue, Green and
Blanche Streets, on the East side by Landsdowne, Cross and Purrington Streets, on the South side by Pacific Street and on the West side by Brookline Street. 
 ARTICLE II 
 PREMISES AND TERM 

Section 2.1 - Premises. 
 Subject to the Expansion Premises Term Commencement set forth in Exhibit A below regarding the Expansion Premises, the Landlord hereby leases to the Tenant, and the Tenant hereby leases from the
Landlord, for the Term, the Premises. The Premises shall exclude the entry and main lobby of the Building, first floor elevator lobby, first floor mail room, the common stairways and stairwells, elevators and elevator wills, boiler room, sprinklers,
sprinkler rooms, elevator rooms, mechanical rooms, loading and receiving areas, electric and telephone closets, janitor closets, loading docks and bays, rooftop mechanical penthouses to the extent they house Building equipment, and pipes, ducts,
conduits, wires and appurtenant fixtures and equipment serving exclusively or in common other parts of the Building. If the Premises at any time includes less than the entire rentable floor area of any floor of the Building, the Premises shall also
exclude the common corridors, vestibules, elevator lobby and toilets located on such floor. The Tenant acknowledges that, except as expressly set forth in this Lease, there have been no representations or warranties made by or on behalf of the
Landlord with respect to the Premises, the Building or the Property or with respect to the suitability of any of them for the conduct of the Tenant’s business. Tenant acknowledges that, except as expressly set forth in this Lease, it is
accepting the Premises in its present “as-is” condition with no expectation that Landlord will or should perform or contribute toward the cost of any leasehold improvements required to prepare the Premises for Tenant’s occupancy.
Landlord shall be responsible, at its sole cost and expense, to (i) demise the Second Floor Expansion Premises as shown on Exhibit B, (ii) demise the Third Floor Expansion Premises as shown on Exhibit B, (iii) create common areas and
common area corridors for a multi-tenant third floor (after giving good faith consideration to Tenant’s input and suggestions for the layout and configuration of such common areas and common area corridors); and (iv) to replace the roof of
the Building during 2010, all in a manner which meets all City of Cambridge building code requirements. Landlord shall deliver to Tenant a copy of any report in its possession, including but not limited to any and all decommissioning documents and
reports, that describes the environmental condition of any portion of the Expansion Premises prepared by or on behalf of Landlord or ETEX Corporation (“ETEX”) in connection with the prior occupancy of the Expansion Premises by ETEX.

  
 2 

 Section 2.2 - Appurtenant Rights. 

The Tenant shall have, as appurtenant to the Premises, the nonexclusive right to use in common with others, subject to reasonable rules
of general applicability to occupants of the Building from time to time made by the Landlord of which the Tenant is given notice: (i) the entry, vestibules and main lobby of the Building, first floor mailroom, the common stairways, elevators,
elevator wells, boiler room, elevator rooms, sprinkler rooms, mechanical rooms, electric and telephone closets, janitor closets, loading docks and bays, rooftop mechanical penthouses and shafts to the extent they house Building equipment, and the
pipes, sprinklers, ducts, conduits, wires and appurtenant fixtures and equipment serving the Premises in common with others, (ii) common walkways and driveways necessary or reasonably convenient for access to the Building, (iii) access to
loading area and freight elevator subject to Rules and Regulations then in effect, and (iv) if the Premises at any time include less than the entire rentable floor area of any floor, the common toilets, corridors, vestibules, and elevator lobby
of such floor. 
 Additionally, the Tenant shall have, as appurtenant to the Premises (and exclusively for use in connection
with the occupancy of the Premises), the nonexclusive right of access to and proportionate use of the roof for the purpose of installing and maintaining mechanical equipment, antennae and dishes which, in each case, have been pre-approved by the
Landlord pursuant to the terms of Article IV, subject however, to reasonable rules of general applicability to occupants of the Building from time to time made by the Landlord of which the Tenant is given notice, but only to the extent that the
Tenant has assumed responsibility for maintenance and repair thereof. 
 Section 2.3 - Landlord’s Reservations. 

(a) The Landlord reserves the right from time to time, without unreasonable interference with the Tenant’s use and with written
notice to Tenant, except in emergencies (including the specialized needs of Tenant’s operations which Landlord hereby acknowledges): (i) to install, use, maintain, repair, replace and relocate for service to the Premises and other parts of
the Building, or either, pipes, ducts, conduits, wires and appurtenant fixtures and equipment, wherever located in the Premises or the Building, and (ii) to alter or relocate any other common facility, provided that substitutions are
substantially equivalent or better for Tenant’s use of the Premises consistent with the Permitted Uses. 
 (b) Tenant
acknowledges that the Park is comprised of several buildings, including the Building and both life science/office buildings (“Commercial Buildings”) and residential buildings (“Residential Buildings”), together with common and
publicly accessible landscaped areas, service drives, and sidewalks. Landlord has established a common scheme for the operation and maintenance of the Park to which this Lease and the other leases of space in the Park are subject pursuant to a legal
instrument entitled the “Declaration of Covenants,” provided, however, that the terms and conditions of the Declaration of Covenants shall not diminish in any material and adverse manner any of Tenant’s rights and benefits with
respect to the Premises, or materially and adversely increase any of Tenant’s obligations. Each Commercial Building, and certain of the Residential Buildings, are subject to the Declaration of Covenants, and contribute to the costs and expenses
to be shared thereunder. However, Landlord and Tenant recognize that Residential Buildings may not contribute to such costs and expenses, and therefore, it is agreed 

  
 3 

 
that allocation of costs and expenses payable under the Declaration of Covenants among the building owners, the Building’s allocable share of which are Operating Expenses under this Lease,
shall be based on an aggregation of all such costs and expenses, less whatever contributions can be collected from the Residential Buildings, and allocated to the Building based on a numerator comprised of the total rentable area of the Building,
and the denominator of which is the total rentable area of all of the Commercial Buildings in existence from time to time, or by such other method as Landlord may reasonably determine. 
 Section 2.4 - Parking. 
 The Landlord shall provide and the Tenant
shall pay for parking privileges for use by the Tenant’s employees, business invitees and visitors in accordance with Exhibit A. The Landlord shall operate, or cause to be operated, a parking garage known as the 80 Landsdowne Street Garage (the
“Garage”) to serve the Building and other buildings in University Park. The Tenant’s parking privileges shall be initially located in the Garage and shall be on a nonexclusive basis (i.e., no reserved spaces); provided, however,
Landlord agrees that the Garage shall be operated so as to maintain therein sufficient spaces to accommodate Tenant’s parking privileges described in Exhibit A. However, Tenant’s parking privileges may be relocated by Landlord to
Landlord’s parking facility located at 55 Franklin Street, Cambridge, Massachusetts, upon reasonable prior notice to Tenant from Landlord. In the event that Tenant’s parking privileges are so relocated, Tenant’s parking privileges at
such new location shall be consistent with the terms set forth in this Section 2.4. All monthly users will have unlimited access to the Garage twenty-four (24) hours per day, seven days per week. Additional parking passes may be provided
to Tenant on a month-to-month basis, as available. 
 The Tenant agrees that it and all persons claiming by, through and under
it, shall at all times abide by the reasonable rules and regulations promulgated by the Landlord, of which Tenant is given notice, with respect to the use of the parking facilities provided by the Landlord pursuant to this Lease. If there are any
conflicts between the provisions of such rules and regulations and any provisions of this Lease, the provisions of this Lease shall govern. 
 Charges for Tenant’s parking privileges hereunder shall be at current monthly parking rates (which rates shall be consistent with market parking rates in parking facilities of comparable quality at
mixed use office/research parks in East Cambridge/Kendall Square/Cambridgeport) (currently at $235.00 per month per pass), and shall constitute Additional Rent and shall be payable monthly to Landlord at the time and in the fashion in which Annual
Fixed Rent under this Lease is payable. 
 At any time during the Term Landlord shall have the right to assign Landlord’s
obligations to provide parking, as herein set forth, together with Landlord’s right to receive Additional Rent for such parking spaces as herein provided, to a separate entity created for the purpose of providing the parking privileges set
forth herein. In such event, Landlord and Tenant agree to execute and deliver appropriate documentation, including documentation with the new entity, reasonably necessary to provide for the new entity to assume Landlord’s obligations to provide
the parking privileges to Tenant as specified herein and for the Tenant to pay the Additional Rent attributable to the parking privileges directly to the new entity. Landlord shall, however, remain primarily liable for the provision of Tenant’s
parking privileges. 

  
 4 

 Section 2.5 - Commencement Date. 

“Commencement Date” as defined in Exhibit A. 
 Section 2.6 - Extension Option. 
 Provided that there has been no
Event of Default which is uncured and continuing on the part of the Tenant, and that Tenant is, as of the date of exercise of its rights under this Section 2.6, in occupancy of at least 67% of the Premises for its own business purposes, the
Tenant shall have the right to extend the Term hereof for two (2) consecutive periods of five (5) years (the first such period being the “First Extension Term,” the second such period being the “Second Extension Term”
and, together with the First Extension Term, the “Full Extension Term”) on the following terms and conditions: 
 (a)
Such right to extend the Term shall be exercised by the giving of notice by Tenant to Landlord at least nine (9) months prior to the expiration of the Initial Term or First Extension Term, as applicable (the “Extension Notice Deadline
Date”). Upon the giving of such notice on or before the Extension Notice Deadline Date, this Lease and the Term hereof shall be extended for an additional term, as specified above, without the necessity for the execution of any additional
documents except a document memorializing the Annual Fixed Rent for the applicable Extension Term to be determined as set forth below. Time shall be of the essence with respect to the Tenant’s giving notice to extend the Term on or before the
Extension Notice Deadline Date. In no event may the Tenant extend the Term under this Section 2.6 for more than ten (10) years after the expiration of the Initial Term, unless Landlord and Tenant shall mutually agree to such an extension.

 (b) The First Extension Term and the Second Extension Term shall be upon all the terms, conditions and provisions of this
Lease, except the Annual Fixed Rent during each such Extension Term shall be the then Extension Rental Value of the Premises for such Extension Term, to be determined under this Section 2.6. 

(c) For purposes of the First Extension Term and Second Extension Term described in this Section 2.6 the Extension Fair Rental Value
of the Premises shall mean the then current fair market annual rent for leases of other space of a comparable nature and quality similarly improved, taking into account the condition to which such premises have been improved (excluding Removable
Alterations) and the economic terms and conditions specified in this Lease that will be applicable thereto, including the savings, if any, due to the absence or reduction of brokerage commissions. The Landlord and Tenant shall endeavor to agree upon
the Extension Fair Rental Value of the Premises within thirty (30) days after the Tenant has exercised an option for an Extension Term. If the Extension Fair Rental Value of the Premises is not agreed upon by the Landlord and the Tenant within
this time frame, each of the Landlord and the Tenant shall retain a real estate professional with at least ten (10) years continuous experience in the business of appraising or marketing similar commercial real estate in the Cambridge,
Massachusetts area who shall, within thirty (30) days of his or her selection, prepare a written report summarizing his or her conclusion as to the Extension Fair Rental Value. The Landlord and the Tenant shall simultaneously exchange such
reports; provided, however, if 

  
 5 

 
either party has not obtained such a report within forty-five (45) days after the last day of the thirty (30) day period referred to above in this Section 2.6, then the
determination set forth in the other party’s report shall be final and binding upon the parties. If both parties receive reports within such time and the lower determination is within ten percent (10%) of the higher determination, then the
average of these determinations shall be deemed to be the Extension Fair Rental Value for the Premises. If these determinations differ by more than ten percent (10%), then the Landlord and the Tenant shall mutually select a person with the
qualifications stated above (the “Final Professional”) to resolve the dispute as to the Extension Fair Rental Value for the Premises. If the Landlord and the Tenant cannot agree upon the designation of the Final Professional within ten
(10) days of the exchange of the first valuation reports, either party may apply to the American Arbitration Association, the Greater Boston Real Estate Board, or any successor thereto, for the designation of a Final Professional. Within ten
(10) days of the selection of the Final Professional, the Landlord and the Tenant shall each submit to the Final Professional a copy of their respective real estate professional’s determination of the Extension Fair Rental Value for the
Premises. The Final Professional shall then, within thirty (30) days of his or her selection, prepare a written report summarizing his or her conclusion as to the Extension Fair Rental Value (the “Final Professional’s
Valuation”). The Final Professional shall give notice of the Final Professional’s Valuation to the Landlord and the Tenant and such decision shall be final and binding upon the Landlord and the Tenant. In the event that the commencement of
either of the First Extension Term or Second Extension Term occurs prior to a final determination of the Extension Fair Rental Value therefor (the “Extension Rent Determination Date”), then the Tenant shall pay the Annual Fixed Rental at
the greater of (i) the rate specified by the Landlord in its proposed Extension Fair Rental Value or (ii) the then applicable Fixed Rental Rate (such greater amount being referred to as the “Interim Rent”). If the Annual Fixed
Rent as finally determined for such Extension Term is determined to be greater than the Interim Rent, then the Tenant shall pay to the Landlord the amount of the underpayment for the period from the end of the Initial Term of this Lease until the
Extension Rent Determination Date within thirty (30) days of the Extension Rent Determination Date. If the Annual Fixed Rent as finally determined for the Extension Term is determined to be less than the Interim Rent, then the Landlord shall
credit the amount of such overpayment against the monthly installments of Annual Fixed Rent coming due after the Extension Rent Determination Date. 
 Section 2.7 - Right of First Offer. 
 Subject to the provisions of
this Section 2.7 as well as the pre-existing rights of Sanofi Pasteur Biologics, Tenant shall have a continuing right of first offer for all or any portion of the portion of the Building which may hereafter become vacant and available (the
“First Offer Space”). Landlord shall notify Tenant of the terms on which Landlord intends to offer to lease the First Offer Space (“Landlord’s Notice”). Within ten (10) business days after receipt of Landlord’s
Notice, Tenant may, by written notice delivered to Landlord, (i) reject Landlord’s Notice, or (ii) unconditionally and irrevocably accept Landlord’s offer to lease such space for Tenant’s own use on the terms set forth in
Landlord’s Notice. If Tenant fails to timely respond as aforesaid, such failure shall be deemed Tenant’s rejection of Landlord’s Notice. In the event Tenant exercises its right to the First Offer Space, Landlord and Tenant hereby
agree to amend 

  
 6 

 
those provisions of this Lease which are necessarily affected by the increase in the rentable area and leaving all other provisions of this Lease in full force and effect without modification.
After Tenant takes possession of the First Offer Space, the term “Premises” as used in this Lease, shall be deemed to refer to and include the First Offer Space. 
 If Landlord’s Notice is rejected under clause (i) above (or deemed rejected through the Tenant’s failure to timely respond), then Landlord may enter into a lease for the First Offer Space
providing for an effective Annual Fixed Rent equal to or less than five percent (5%) less than that specified in Landlord’s Notice. For clarity, in the event that the Landlord proposes to enter into a lease for the First Offer Space
providing for an effective Annual Fixed Rent greater than five percent (5%) less than that specified in Landlord’s Notice, Landlord shall notify Tenant of such terms by sending an additional Landlord’s Notice that will be subject to
the terms of the preceding paragraph. 
 Except as may be set forth in Landlord’s Notice, Landlord’s failure to
deliver, or delay in delivering, all or any part of the First Offer Space, for any reason, shall not constitute a default of Landlord, and shall not affect the validity of the Lease. 

Notwithstanding any provision of this Section 2.7 to the contrary, Tenant’s rights under this Section 2.7 shall be void,
at Landlord’s election, if Tenant is in default hereunder and beyond any applicable cure periods on the date Tenant makes any election with respect to the First Offer Space under this Section 2.7 or at the time the First Offer Space would
be added to the Premises. Nothing in this Section shall be construed to grant to Tenant any rights or interest in any space in the Building, and any claims by Tenant alleging a failure of Landlord to comply herewith shall be limited to claims for
monetary damages. Tenant may not assert any rights in any space nor file any lis pendens or similar notice with respect thereto. 

ARTICLE III 

RENT AND OTHER PAYMENTS  

Section 3.1 - Annual Fixed Rent. 
 From and after the Annual Fixed Rent Commencement Date (as defined in Exhibit A), the Tenant shall pay, without notice or demand, monthly installments of one-twelfth (1/12th) of the Annual Fixed Rent
in effect and applicable to the Premises in advance for each full calendar month of the Term following the Annual Fixed Rent Commencement Date and of the corresponding fraction of said one-twelfth (1/12th) for any fraction of a calendar month
at the Rent Commencement Date or end of the Term. The Annual Fixed Rent applicable to the Premises during the Term shall be as set forth in Exhibit A. 

  
 7 

 Section 3.2 - Real Estate Taxes. 

From and after the Commencement Date, during the Term, the Tenant shall pay to the Landlord, as Additional Rent, the Tenant’s Tax
Expenses Allocable to the Premises (as such term is hereinafter defined) in accordance with this Section 3.2. The terms used in this Section 3.2 are defined as follows: 

 

	 	(a)	“Tax Year” means the 12-month period beginning July 1 each year or if the appropriate governmental tax fiscal period shall begin on any date other than
July 1, such other date. 

  

	 	(b)	“The Tenant’s Tax Expense Allocable to the Premises” means (i) that portion of the Landlord’s Tax Expenses for a Tax Year which bears the same
proportion thereto as the Rentable Floor Area of the Premises (from time to time) bears to the Total Rentable Floor Area of the Building and (ii) in the event that the Premises are improved to a standard which is higher than other portions of
the Property and the Property is re-assessed at a higher value, such portion of the Real Estate Taxes on the Property with respect to any Tax Year as is appropriate so that the Tenant bears the portion of the Real Estate Taxes which are properly
allocable to the Premises, as reasonably determined by Landlord using good faith commercially reasonable judgment based on assessment values and other information with respect to the Premises and the Building made available by the assessing
authorities (Landlord’s determination of such allocation shall take into account the rate of appreciation, if any, of real property in the City of Cambridge from the date of the prior assessment to the date of the new assessment, and the
portion of any increased assessment on the Property which is allocable to any such general increase in the value of the real property in the City of Cambridge shall not be allocated disproportionately to Tenant). 

 

	 	(c)	“The Landlord’s Tax Expenses” with respect to any Tax Year means the aggregate Real Estate Taxes on the Property with respect to that Tax Year, reduced
by any abatement receipts with respect to that Tax Year. 

  

	 	(d)	“Real Estate Taxes” means (i) all real property taxes and special assessments of every kind and nature assessed by any governmental authority on the
applicable property, but excluding any income taxes payable by Landlord as a result of payments made to Landlord by Tenant or any other tenant at the Property; and (ii) reasonable expenses of any proceedings for abatement of such taxes or
special assessments. Any special assessments to be included within the definition of “Real Estate Taxes” shall be limited to the amount of the installment (plus any interest thereon) of such special tax or special assessment (which shall
be payable over the longest period permitted by law) required to be paid during the Tax Year in respect of which such taxes are being determined. There shall be excluded from such taxes all income, estate, succession, inheritance, excess profit,
franchise and transfer taxes; provided, however, that if at any time during the Term the present system of ad valorem taxation of real property shall be changed so that in lieu of the whole or any part of the ad valorem tax on real property,
there shall be assessed on the Landlord a capital levy or other tax on the gross rents received with respect to the Property, or a federal, state, county, municipal or other local income, franchise, excise or similar tax, assessment, levy or charge
(distinct from any now in effect) based, in whole or in part, upon any such gross rents, then any and all of such taxes, assessments, levies or charges, to the extent so based, shall be deemed to be included within the term “Real Estate
Taxes.” 

  
 8 

 Payments by the Tenant on account of the Tenant’s Tax Expenses Allocable to the
Premises shall be made monthly at the time and in the fashion herein provided for the payment of Annual Fixed Rent and shall be in an amount of the greater of (i) one-twelfth (1/12th) of the Tenant’s Tax Expenses Allocable to the Premises
for the current Tax Year as reasonably estimated by the Landlord, or (ii) an amount reasonably estimated by any ground lessor of the Land or holder of a first mortgage on the Property, to be sufficient, if paid monthly, to pay the
Landlord’s Tax Expenses on the dates due to the taxing authority. 
 Not later than ninety (90) days after the
Landlord’s Tax Expenses are determinable for the first Tax Year of the Term or fraction thereof and for each succeeding Tax Year or fraction thereof during the Term, the Landlord shall render the Tenant a statement in reasonable detail showing
for the preceding year or fraction thereof, as the case may be, real estate taxes on the Property, and any abatements or refunds of such taxes. Expenses incurred in obtaining any tax abatement or refund may be charged against such tax abatement or
refund before the adjustments are made for the Tax Year. If at the time such statement is rendered it is determined with respect to any Tax Year, that the Tenant has paid (i) less than the Tenant’s Tax Expenses Allocable to the Premises or
(ii) more than the Tenant’s Tax Expenses Allocable to the Premises, then, in the case of (i) the Tenant shall pay to the Landlord, as Additional Rent, within thirty (30) days of such statement the amount of such underpayment and,
in the case of (ii) the Landlord shall credit the amount of such overpayment against the monthly installments of the Tenant’s Tax Expenses Allocable to the Premises next thereafter coming due (or refund such overpayment within thirty
(30) days if the Term has expired and the Tenant has no further obligation to the Landlord). 
 To the extent that real
estate taxes shall be payable to the taxing authority in installments with respect to periods less than a Tax Year, the statement to be furnished by the Landlord shall be rendered and payments made on account of such installments. Notwithstanding
the foregoing provisions, no decrease in Landlord’s Tax Expenses with respect to any Tax Year shall result in a reduction of the amount otherwise payable by Tenant if and to the extent said decrease is attributable to vacancies in the Building,
rather than to a reduction in the assessed value of the Property as a whole or a reduction in the tax rate. Landlord shall, upon Tenant’s request therefor, provide Tenant with copies of all applicable tax bills, statements, records and the
like, as well as copies of Landlord’s calculations and all other relevant information. 
 Section 3.3 - Operating Expenses.

 From and after the Commencement Date, during the Term the Tenant shall pay to the Landlord, as Additional Rent, the
Tenant’s Operating Expenses Allocable to the Premises, as hereinafter defined, in accordance with this Section 3.3. The terms used in this Section 3.3 are defined as follows: 

 

	 	(a)	“The Tenant’s Operating Expenses Allocable to the Premises” means that portion of the Operating Expenses for the Property which bears the same proportion
thereto as the Rentable Floor Area of the Premises bears to the Total Rentable Floor Area of the Building. 

  

	 	(b)	 “Operating Expenses for the Property” means Landlord’s reasonable cost of operating, cleaning, maintaining and repairing the Property,
and shall include 

  
 9 

	 	
without limitation, the cost of services on Exhibit C; premiums for insurance carried pursuant to Section 7.4; the amount deductible from any insurance claim actually made by Landlord during
the time period in question (which amount is currently $10,000.00, and which amount may be increased during the Term and any Extension Term provided such increase is reasonable and customary); reasonable compensation and all fringe benefits,
worker’s compensation insurance premiums and payroll taxes paid to, for or with respect to all persons (University Park/Building general manager and below, provided that such charges shall be prorated to reflect the percentage of rentable
square feet of the Building as compared to all of the commercial rentable square feet at University Park) directly engaged in the operating, maintaining or cleaning of the Property; interior landscaping and maintenance; steam, water, sewer, gas,
oil, electricity, telephone and other utility charges (excluding such utility charges either separately metered or separately chargeable to tenants for additional or special services and those charges related to the cost of operating base Building
equipment not used by Tenant, cost of providing conditioned water for HVAC services; cost of building and cleaning supplies; the costs of routine environmental management programs operated by Landlord; market rental costs for equipment used in the
operating, cleaning, maintaining or repairing of the Property, or the applicable fair market rental charges in the case of equipment owned by the Landlord; cost of cleaning; cost of maintenance, repairs and replacements; cost of snow removal; cost
of landscape maintenance; security services; payments under service contracts with independent contractors; management fees at market rates (currently $1.17 per rentable square foot); the cost of any capital improvement either required by law or
regulation or which reduces the Operating Expenses for the Property or which improves the management and operation of the Property in a manner acceptable to Tenant, which cost shall be amortized in accordance with generally accepted accounting
principles together with interest on the unamortized balance calculated at the rate from time to time announced by Bank of America, N.A. as its prime rate; charges reasonably allocated to the Building for the operating, cleaning, maintaining and
repairing of University Park common areas and amenities; and all other reasonable and necessary expenses paid in connection with the operation, cleaning, maintenance and repair of the Property. If, for any reason portions of the Rentable Area of the
Building not included in the Premises were not occupied by tenants or the Landlord was not supplying all tenants with the services being supplied under the Lease or any tenants in the Building were supplied with a lesser level of standard services
than those supplied to the Tenant under this Lease, Landlord’s Operating Expenses for the Property shall include the amounts reasonably determined by Landlord which would have been incurred if ninety- five percent (95%) of the rentable
area in the Building were occupied and were supplied with the same level of standard services as supplied to the Tenant under this Lease. If the Tenant provides written notice to the Landlord of deficiencies in the performance of cleaning services
within the Premises provided pursuant to the terms of this Lease, then Landlord shall have thirty (30) days within delivery of such notice to remedy the deficiencies identified by the Tenant. If such deficiencies have not been resolved to the
reasonable satisfaction of the Tenant 

  
 10 

	 	
within such thirty (30) day period, then the Tenant shall have the ability to enter into its own contract with a vendor of its own choosing to provide cleaning services to the Premises. In
the event that the Tenant does enter into such a contract with a vendor to provide cleaning services to the Premises, the Tenant shall notify the Landlord prior to the commencement of such cleaning services, which notice shall include the
commencement date of such services, and the Operating Expenses charged to the Tenant from the commencement date through the remainder of the Term of this Lease shall not include any charges related to cleaning services of the Premises.

 Operating Expenses for the Property shall not include the following: the Landlord’s Tax Expense; cost of
repairs or replacements (i) resulting from eminent domain takings, (ii) to the extent reimbursed by insurance, or (iii) required, above and beyond ordinary periodic maintenance, to maintain in serviceable condition the major
structural elements of the Building, including the roof, exterior walls and floor slabs; replacement or contingency reserves; ground lease rents or payment of debt obligations; costs incurred due to negligent acts or omissions of Landlord,
Landlord’s agents, contractors or employees, or any other tenant of the Building; legal and other professional fees for matters not relating to the normal administration and operation of the Property; promotional, advertising, public relations
or brokerage fees and commissions paid in connection with services rendered for securing or renewing leases; lease up and tenant improvement costs for space other than the Premises in the Building; costs of capital improvements not permitted
hereinabove; and separately metered or sub metered utilities for other tenants in the Building. The Landlord’s Operating Expenses shall be reduced by the amount of any proceeds, payments, credits or reimbursements which the Landlord receives
from sources other than tenants and which are applicable to such Operating Expenses for the Property. 

Payments by the Tenant for its share of the Operating Expenses for the Property shall be made in monthly
installments of one-twelfth (1/12th) of Tenant’s
share of Operating Expenses. The amount so to be paid to the Landlord shall be an amount from time to time reasonably estimated by the Landlord to be sufficient to aggregate a sum equal to the Tenant’s share of the Operating Expenses for the
Property for each calendar year. 
 Not later than ninety (90) days after the end of each calendar year or fraction thereof
during the Term or fraction thereof at the end of the Term, the Landlord shall render the Tenant a statement in reasonable detail and according to usual accounting practices certified by a representative of the Landlord, showing for the preceding
calendar year or fraction thereof, as the case may be, the Operating Expenses for the Property and the Tenant’s Operating Expenses Allocable to the Premises. Said statement to be rendered to the Tenant also shall show for the preceding calendar
year or fraction thereof, as the case may be, the amounts of Operating Expenses already paid by the Tenant. If at the time such statement is rendered it is determined with respect to any calendar year, that the Tenant has paid (i) less than the
Tenant’s Operating Expenses Allocable to the Premises or (ii) more than the Tenant’s Operating Expenses Allocable to the Premises, then, in the case of (i) the Tenant shall pay to the Landlord, as Additional Rent, within thirty
(30) days of such statement the amounts of such underpayment and, in the case of 

  
 11 

 
(ii) the Landlord shall credit the amount of such overpayment against the monthly installments of the Tenant’s Operating Expenses Allocable to the Premises next thereafter coming due (or
refund such overpayment within thirty (30) days if the Term has expired and the Tenant has no further obligation to the Landlord). 

Section 3.4 - Other Utility Charges. 
 During the Term, the Tenant shall pay directly to the provider of the service all separately metered charges for steam, heat, gas, electricity, fuel and other services and utilities furnished to the
Premises, and shall pay to Landlord as Additional Rent its pro rata share of water, sewer and other services and utilities which shall be prorated to reflect Tenant’s proportional usage based upon Tenant’s proportional occupancy of the
Building. Landlord acknowledges that all other tenant spaces in the Building are separately metered. 
 Section 3.5 - Above-standard
Services. 
 If the Tenant requests and the Landlord elects to provide any services to the Tenant in addition to those
described in Exhibit C, the Tenant shall pay to the Landlord, as Additional Rent, the amount billed by Landlord for such services at Landlord’s standard rates as from time to time in effect. If the Tenant has requested that such services be
provided on a regular basis, the Tenant shall, if requested by the Landlord, pay for such services at the time and in the fashion in which Annual Fixed Rent under this Lease is payable. Otherwise, the Tenant shall pay for such additional services
within thirty (30) days after receipt of an invoice from the Landlord. Landlord shall have the right from time to time to inspect Tenant’s utility meters and to install timers thereon at Tenant’s expense for purposes of monitoring
above-standard service usage. Tenant shall pay for such work within thirty (30) days after receipt of an invoice from Landlord. 

Section 3.6 - No Offsets. 
 Annual Fixed Rent and Additional Rent shall be paid by the Tenant without offset, abatement or deduction except as provided herein. 
 Section 3.7 - Net Lease. 
 It is understood and agreed that this Lease
is a net lease and that the Annual Fixed Rent is absolutely net to the Landlord excepting only the Landlord’s obligations to pay any debt service or ground rent on the Property, to provide the Landlord’s services, and to pay the real
estate taxes and operating expenses which the Tenant is not required to pay under this Lease. 
 ARTICLE IV 

ALTERATIONS 

Section 4.1 - Consent Required for Tenant’s Alterations. 
 The Tenant shall not make alterations or additions to the Premises except in accordance with (i) construction rules and regulations from time to time promulgated by Landlord and applicable to Tenants
in the Building (a current copy of which is attached hereto as Exhibit F), 

  
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and (ii) plans and specifications therefor first approved by the Landlord, which approval shall not be unreasonably withheld, conditioned or delayed. In addition, Tenant may make
non-structural alterations affecting only the interior of the Premises, and not affecting building systems, costing less than $50,000.00 in any one instance (or in the aggregate with respect to related alterations) without Landlord’s prior
written consent, but subject to the other terms of this Lease and provided that Tenant provides notice of such alterations within a reasonable time after the completion of the same. The Landlord shall not be deemed unreasonable for withholding
approval of any alterations or additions which (i) will affect any structural or exterior element of the Building, any area or element outside of the Premises, or any facility serving any area of the Building outside of the Premises or any
publicly accessible major interior features of the Building, (ii) will require significant expense to readapt the Premises to substantially the same condition of the Premises as of the date hereof unless the Tenant first gives assurance
acceptable to the Landlord that such readaptation will be made prior to such termination without expense to the Landlord, or (iii) which would not be compatible with existing mechanical or electrical, plumbing, HVAC or other systems in the
Building, in each case, as reasonably determined by the Landlord. 
 Section 4.2 - Ownership of Alterations. 

All alterations and additions shall be part of the Building and owned by the Landlord. With respect to alterations and additions
requiring prior notice to Landlord, if Tenant fails to inform Landlord (as and to the extent required under this Lease) at least ten (10) days prior to the installation of the alteration or addition, thereby preventing Landlord from making a
determination as to whether it will want such addition or alteration removed from the Premises prior to its installation, then Landlord may require such removal without exception. All movable trade fixtures and furnishings not attached to the
Premises shall remain the property of the Tenant and shall be removed by the Tenant upon termination or expiration of this Lease. The Tenant shall repair any damage caused by the removal of any alterations, additions or personal property from the
Premises, including the Removable Equipment (as defined below). Landlord and Tenant agree that prior to the Expansion Premises Rent Commencement Date, Tenant shall provide a list to Landlord of equipment that Tenant has installed in the Premises,
together with evidence indicating that such equipment was not purchased with the Leasehold Improvements Allowance (the “Removable Equipment”). Notwithstanding the foregoing provisions of this Section 4.2, Tenant shall be permitted to
remove the Removable Equipment from the Premises at the end of the Term, provided that such Removable Equipment shall be removed by Tenant with reasonable care and diligence, including the capping off of all utility connections behind the adjacent
interior finish, and the restoration of such interior finish to the extent necessary so that the Premises are left with complete wall, ceiling and floor finishes. 
 Section 4.3 - Construction Requirements for Alterations. 
 All
construction work by the Tenant shall be done in a good and workmanlike manner employing only first-class materials and in compliance with Landlord’s construction rules and regulations and with all applicable laws and all lawful ordinances,
regulations and orders of Governmental authority and insurers of the Building. The Landlord or Landlord’s authorized agent may (but without any implied obligation to do so) inspect the work of the Tenant at reasonable times with prior notice to
Tenant and shall give notice of observed defects. All of the 

  
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Tenant’s alterations and additions and installation of furnishings shall be coordinated with any work being performed by the Landlord and in such manner as to maintain harmonious labor
relations and not to damage the Building or interfere with Building construction or operation and, except for installation of furnishings, shall be performed by contractors or workmen first approved by the Landlord, which approval the Landlord
agrees not to unreasonably withhold, condition or delay (Landlord shall provide its written consent or written notice of its reason for withholding consent within ten (10) days of any request for consent from Tenant). The Tenant, before
starting any work, shall receive and comply with Landlord’s construction rules and regulations applicable to all tenants in the Building and shall cause Tenant’s contractors to comply therewith, shall secure all licenses and permits
necessary therefor and shall deliver to the Landlord a statement of the names of all its contractors and subcontractors performing work with a value in excess of $50,000 and the estimated cost of all labor and material to be furnished by them and
security satisfactory to the Landlord protecting the Landlord against liens arising out of the furnishing of such labor and material; and cause each contractor engaged to perform work to carry worker’s compensation insurance in statutory
amounts covering all the contractors’ and subcontractors’ employees and comprehensive general public liability insurance with limits of $1,000,000 (individual)/$3,000,000 (occurrence), or in such lesser amounts as Landlord may accept,
covering personal injury and death and property damage (all such insurance to be written in companies approved reasonably by the Landlord and insuring the Landlord, such individuals and entities affiliated with the Landlord as the Landlord may
designate, and the Tenant as well as the contractors and to contain a requirement for at least thirty (30) days’ notice to the Landlord prior to cancellation, nonrenewal or material change), and to deliver to the Landlord certificates of
all such insurance. 
 Section 4.4 - Payment for Tenant Alterations. 

Except as otherwise set forth herein, Tenant agrees to pay promptly when due the entire cost of any work done on the Premises by the
Tenant, its agents, employees or independent contractors, and not to cause or permit any liens for labor or materials performed or furnished in connection therewith to attach to the Premises or the Property and promptly to discharge any such liens
which may so attach. If any such lien shall be filed against the Premises or the Property and the Tenant shall fail to cause such lien to be discharged within ten (10) business days after the filing thereof, the Landlord may cause such lien to
be discharged by payment, bond or otherwise without investigation as to the validity thereof or as to any offsets or defenses which the Tenant may have with respect to the amount claimed. The Tenant shall reimburse the Landlord, as Additional Rent,
for any cost so incurred and shall indemnify and hold harmless the Landlord from and against any and all claims, costs, damages, liabilities and expenses (including reasonable attorneys’ fees) which may be incurred or suffered by the Landlord
by reason of any such lien or its discharge. 
 Section 4.5 - Leasehold Improvements Allowance and Space Plan Allowance. 

In connection with Tenant’s execution of this Lease, Tenant shall perform certain improvements to the Premises, as mutually agreed
upon by Landlord and Tenant (the “Improvements”). Tenant acknowledges and agrees that the Improvements shall include (but shall not be limited to) the creation of laboratory and potentially vivarium space with supporting office space in
the Expansion Premises. Landlord shall provide to Tenant the Leasehold 

  
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Improvements Allowance set forth in Exhibit A, which shall be paid and used in accordance with the provisions of the Work Letter attached to this Lease as Exhibit E. In addition,
Landlord shall provide Tenant with an allowance to be used toward the costs of preparation of its space plan, in an amount equal to $0.10 per rentable square foot of the Premises. 

ARTICLE V 

RESPONSIBILITY FOR CONDITION OF BUILDING AND PREMISES 
 Section 5.1 - Maintenance of Building and Common Areas by Landlord. 

Except as otherwise provided in Article VIII, the Landlord shall make such repairs to the major structural elements of the Building,
including the roof, exterior walls and floor slabs as may be necessary to keep and maintain the same in good condition and maintain and make such repairs to the Common Building Areas as may be necessary to keep them in good order, condition and
repair, including without limitation, the glass in the exterior walls of the Building, and all mechanical systems and equipment serving the Building and not exclusively serving the Premises. The Landlord shall further perform the services on Exhibit
C hereto. The Landlord shall in no event be responsible to the Tenant for any condition in the Premises or the Building caused by an act or neglect of the Tenant, or any invitee or contractor of the Tenant. Landlord’s costs in performing such
services shall be reimbursed by the Tenant to the extent provided in Section 3.3. Except as specifically set forth herein, Tenant accepts the Premises in its as-is condition. Landlord acknowledges that (i) an emergency generator is
available in the Building for the Tenant, and (ii) Landlord possesses all licenses and permits required of Landlord so that Tenant may obtain its required licenses and permits to store and use on the Premises the flammable materials used by the
Tenant to conduct its business and operations. 
 Section 5.2 - Maintenance of Premises by Tenant. 

The Tenant shall keep neat and clean and maintain in good order, condition and repair the Premises and every part thereof and all
Building and mechanical equipment exclusively serving the Premises, reasonable wear and tear excepted and further excepting those repairs for which the Landlord is responsible pursuant to Section 5.1 and damage by fire or other casualty and as
a consequence of the exercise of the power of eminent domain, and shall surrender the Premises and all alterations and additions thereto, at the end of the Term, in such condition, first removing all goods and effects of the Tenant and, to the
extent specified by the Landlord by notice to the Tenant, all alterations and additions made by the Tenant, which Tenant has not elected to retain in accordance with the terms of Sections 4.2 and 5.2, and repairing any damage caused by such removal
and restoring the Premises and leaving them clean and neat. The Tenant shall not permit or commit any waste, and the Tenant shall be responsible for the cost of repairs which may be made necessary by reason of damages to common areas in the Building
by the Tenant, or any of the contractors or invitees of the Tenant. Mechanical, HVAC, and all laboratory systems and equipment shall be maintained in good order, condition and repair. Tenant shall, upon request, provide evidence reasonably
satisfactory to Landlord that it has available the necessary expertise to properly conduct and carry out this responsibility, either through persons employed by the Tenant or through contracts with independent service organizations, or a combination
thereof. All charges incurred by Landlord in connection with such work, whether by independent organizations or in accordance with reasonable rates assigned to employees of Landlord or Landlord’s affiliates, shall be promptly reimbursed by
Tenant as Additional Rent. 

  
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 Section 5.3 - Delays in Landlord’s Services. 

The Landlord shall not be liable to the Tenant for any compensation or reduction of rent by reason of inconvenience or annoyance or for
loss of business arising from the necessity of the Landlord or its agents entering the Premises for any purposes authorized in this Lease, or for repairing the Premises or any portion of the Building. In case the Landlord is prevented or delayed
from making any repairs, alterations or improvements, or furnishing any services or performing any other covenant or duty to be performed on the Landlord’s part, by reason of any External Cause, the Landlord shall not be liable to the Tenant
therefor, nor, except as expressly otherwise provided in this Lease, shall the Tenant be entitled to any abatement or reduction of rent by reason thereof, nor shall the same give rise to a claim in the Tenant’s favor that such failure
constitutes actual or constructive, total or partial, eviction from the Premises. 
 The Landlord reserves the right to stop any
service or utility system when necessary by reason of accident or emergency, until necessary repairs have been completed; provided, however, that in each instance of stoppage, the Landlord shall exercise reasonable diligence to eliminate the cause
thereof. Except in case of emergency repairs, the Landlord will give the Tenant reasonable advance written notice of any contemplated stoppage and will use reasonable efforts to avoid unnecessary inconvenience to the Tenant by reason thereof. In no
event shall the Landlord have any liability to the Tenant for the unavailability of heat, light or any utility or service to be provided by the Landlord to the extent that such unavailability is caused by External Causes, provided, however, that the
Landlord is obligated to exercise reasonable efforts to restore such services or utility systems’ operation as soon as possible. 
 Notwithstanding anything contained herein to the contrary, in the event Landlord shall fail to provide the services it is required to provide to Tenant hereunder for any reason other than due to
Tenant’s acts or omissions, and as a result thereof, Tenant is reasonably unable to use or conduct its operations on part or all of the Premises, Tenant shall be entitled to (i) proportionate abatement of rent (including but not limited to
abatement of Tenant’s Tax Expenses and Tenant’s Operating Expenses) for the period Tenant is reasonably unable to use or conduct its operations on part or all of the Premises, or (ii) terminate this Lease if Landlord is unable to
restore such services within three (3) months from the date of interruption. Tenant shall have the right to terminate this Lease as aforesaid by written notice to Landlord at any time after the expiration of such three (3) month period,
and such termination shall be effective as of the date of the interruption in service. To the extent any such unavailability is caused primarily by the action or inaction of Landlord, it’s servants, agents, employees, contractors, licensees,
invitees or any persons claiming by, through or under Landlord, and (i) Landlord fails to commence commercially reasonable corrective action within ten (10) days after Tenant notifies Landlord of such unavailability, or (ii) Landlord,
upon commencing commercially reasonable corrective action within ten (10) days after Tenant notifies Landlord of such unavailability, fails to restore the services within thirty (30) days after Tenant notifies Landlord of such
unavailability, Tenant shall have the right to restore such service at Landlord’s cost and expense. 

  
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 ARTICLE VI 
 TENANT COVENANTS 
 The Tenant covenants during the Term and for such further
time as the Tenant occupies any part of the Premises: 
 Section 6.1 - Permitted Uses. 

The Tenant shall occupy the Premises only for the Permitted Uses, which include, but are not limited to, general business and
administrative offices, biotechnology research and development, animal experimentation and related activities thereto. The Tenant shall not injure or deface the Premises or the Property, nor permit in the Premises any auction sale. The Tenant shall
give written notice to the Landlord of any materials on OSHA’s right to know list or which are subject to regulation by any other federal, state, municipal or other governmental authority and which the Tenant intends to have present at the
Premises. The Tenant shall comply with all requirements of pubic authorities and of the Board of Fire Underwriters in connection with methods of storage, use and disposal thereof. The Tenant shall not permit in the Premises any nuisance, or the
emission from the Premises of any objectionable noise, odor or vibration, nor use or devote the Premises or any part thereof for any purpose which is contrary to law or ordinance or liable to invalidate or increase premiums for any insurance on the
Building or its contents or liable to render necessary any alteration or addition to the Building, nor commit or permit any waste in or with respect to the Premises, nor generate, store or dispose of any oil, toxic substances, hazardous wastes, or
hazardous materials (each a, “Hazardous Material”), or permit the same in or on the Premises or any parking areas provided for under this Lease, unless first giving Landlord notice thereof. The Tenant shall not dump, flush or in any way
introduce any Hazardous Materials into septic, sewage or other waste disposal systems serving the Premises or any parking areas provided for under this Lease, except as specifically permitted by government license or permit. The Tenant will,
indemnify the Landlord and its successors and assigns against all claims, loss, cost, and expenses including attorneys’ fees, incurred as a result of any contamination of the Building or any other portion of University Park with Hazardous
Materials by the Tenant or Tenant’s contractors, licensees, invitees, agents, servants or employees. Tenant shall provide to Landlord herewith certified copies of all licenses and permits Tenant has been required to obtain prior to handling any
such Hazardous Materials. Tenant shall further provide to Landlord evidence satisfactory to Landlord from Tenant’s consultant preparing any regulatory filings for licensing or permitting to handle Hazardous Materials setting forth in reasonable
detail all licenses and/or permits that Tenant is required to obtain or will obtain prior to the Commencement Date and that such licenses and/or permits are valid and in full force and effect. Tenant shall have received all such licenses and/or
permits prior to commencement of its operations in the Premises. From time to time hereafter upon thirty (30) days advance notice from Landlord, Tenant will provide Landlord with such updated provisions of Sections 6.1 and 6.2 as the Landlord
may reasonably request. Upon request by the Landlord, Tenant shall immediately remove any material or substances which are not in compliance with this Section 6.1. The Landlord represents and warrants to the Tenant that, to the best of
Landlord’s knowledge, the Permitted Uses are in compliance with all current land use and zoning restrictions applicable to the Premises, subject to the terms and conditions thereof. Tenant shall have no liability for any environmental condition
or violation of law that exists in 

  
 17 

 
the Existing Premises as of the date of this Lease unless such liability is due to Tenant’s act of omission, or within the Expansion Premises as of the date of the applicable Expansion
Premises Term Commencement Date. 
 Section 6.2 - Laws and Regulations. 

The Tenant shall comply with all federal, state and local laws, regulations, ordinances, executive orders, federal guidelines, and
similar requirements in effect from time to time, including, without limitation, City of Cambridge ordinances numbered 1005, 1053, 1086 and any subsequently adopted ordinance for employment and animal experimentation with respect to animal
experiments and hazardous waste and any such requirements pertaining to employment opportunity, anti-discrimination and affirmative action. Tenant shall have the right to contest any notice of violation for any of the foregoing by appropriate
proceedings diligently conducted in good faith. 
 Section 6.3 - Rules and Regulations. 

The Tenant shall not obstruct in any manner any portion of the Property not hereby leased; shall not permit the placing of any signs,
curtains, blinds, shades, awnings, aerials or flagpoles, or the like, visible from outside the Premises; and shall comply with all reasonable rules and regulations of uniform application to all occupants of the Building now or hereafter made by the
Landlord, of which the Tenant has been given notice, for the care and use of the Property and the parking facilities relating thereto. The Landlord shall not be liable to the Tenant for the failure of other occupants of the Building to conform to
any such rules and regulations, however Landlord shall uniformly enforce the Rules and Regulations. The Landlord shall provide, at the Landlord’s expense, a Building standard tenant name sign at the entryway to the Premises. Notwithstanding
anything contained in this Lease (including all exhibits) to the contrary, Tenant shall have the right to install a sign or signs with its corporate logo at the entrance to the Premises on each level of the Building occupied, in part or in full, by
Tenant, and shall have its name listed in the Building directory located in the Building’s main lobby, subject to the prior approval of such sign by Landlord, which approval shall not be unreasonably withheld or delayed. 

Section 6.4 - Safety Compliance. 
 The Tenant shall keep the Premises equipped with all safety appliances required by law or ordinance or any other regulations of any public authority because of any non-office use made by the Tenant and to
procure all licenses and permits so required because of such use and, if requested by the Landlord, do any work so required because of such use, it being understood that the foregoing provisions shall not be construed to broaden in any way the
Tenant’s Permitted Uses. Tenant shall conduct such periodic tests, evaluations or certifications of safety appliances and laboratory equipment as are required or recommended in accordance with generally accepted standards for good laboratory
practice to ensure that such safety appliances and equipment remain in good working order, and shall provide to Landlord copies of such reports, evaluations and certifications as they are periodically obtained by Tenant or upon ten (10) days
advance notice from Landlord (but only to the extent that Tenant has failed to previously provide any such reports). Landlord represents and warrants that the Premises are in compliance with applicable laws. 

  
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 Section 6.5 - Landlord’s Entry. 

The Tenant shall permit the Landlord and its agents (which agents shall be identified to Tenant and reasonably approved by Tenant for
entry), after 48 hours prior notice and at times reasonably acceptable to Tenant, except in the case of emergencies, to enter the Premises at all reasonable hours for the purpose of inspecting or of making repairs to the same, monitoring
Tenant’s compliance with the requirements and restrictions set forth in this Lease, and for the purpose of showing the Premises to prospective purchasers and mortgagees at all reasonable times and to prospective tenants (during the last nine
(9) months of the Term or after notice of termination by the Tenant has been received by Landlord) provided that in connection with such entry, Tenant may provide procedures reasonably designed so as not to jeopardize Tenant’s trade
secrets, proprietary technology or critical business operations. 
 Section 6.6 - Floor Load. 

The Tenant shall not place a load upon any floor in the Premises exceeding the floor load per square foot of area which such floor was
designed to carry and which is allowed by law. Further, Tenant shall not move any safe, vault or other heavy equipment in, about or out of the Premises except in such manner and at such time as the Landlord shall in each instance authorize. The
Tenant’s machines and mechanical equipment shall be placed and maintained by the Tenant at the Tenant’s expense in settings sufficient to absorb or prevent vibration or noise that may be transmitted to the Building structure or to any
other space in the Building. 
 Section 6.7 - Personal Property Tax. 

The Tenant shall pay promptly when due all taxes which may be imposed upon personal property (including, without limitation, fixtures and
equipment) in the Premises to whomever assessed. Tenant shall have the right to contest the validity or amount of any such taxes by appropriate proceedings diligently conducted in good faith. 
 Section 6.8 - Assignment and Subleases. 
 The Tenant shall hot assign,
mortgage, pledge, hypothecate or otherwise transfer this Lease, or sublet (which term, without limitation, shall include granting of concessions, licenses and the like) the whole or any part of the Premises without, in each instance, having first
received the consent of the Landlord which consent shall not be unreasonably withheld, conditioned or delayed. Except as specifically permitted herein, any assignment or sublease made without such consent shall be void. The Landlord shall not be
deemed to be unreasonable in withholding its consent to any proposed assignment or subletting by the Tenant based on any of the following factors: 
  

	 	(a)	The business of the proposed occupant is not consistent with the image and character which the Landlord desires to promote for the Building, 

  
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	 	(b)	The proposed assignment, mortgage or pledge would in any way materially diminish Landlord’s rights with respect to the Premises. 

 

	 	(c)	The proposed occupant is not sufficiently creditworthy in the reasonable opinion of Landlord based on a comparison of the creditworthiness of other similarly-situated
companies in the same industry as the proposed occupant. 

 Notwithstanding anything to the contrary contained in
this Section, Tenant shall have the right to assign or otherwise transfer this Lease or the Premises, or part of the Premises, without obtaining the prior consent of Landlord, (a) to its parent corporation, to a wholly owned subsidiary, to a
corporation which is wholly owned by the same corporation which wholly owns Tenant, to an entity directly or indirectly controlling, controlled by or under common control with Tenant, any entity owning or controlling fifty percent (50%) or more
of the outstanding voting interest of Tenant, or any entity of which Tenant owns or controls fifty percent (50%) or more of the voting interests, provided that (i) the transferee shall, prior to the effective date of the transfer, deliver
to Landlord instruments evidencing such transfer and its agreement to assume and be bound by all the terms, conditions and covenants of this Lease to be performed by Tenant, all in form reasonably acceptable to Landlord, and (ii) at the time of
such transfer there shall not be an uncured Event of Default under this Lease; or (b) to the purchaser of all or substantially all of its assets, any entity resulting from the merger or consolidation of Tenant, any successor entity resulting
from a bona fide reorganization or Tenant, or to any entity into which the Tenant may be merged or consolidated (along with all or substantially all of its assets) (the “Acquiring Company”), provided that (i) the net assets of the
Acquiring Company at the time of the transfer or merger shall not be less than $25,000,000.00, (ii) the Acquiring Company continues to operate the business conducted in the Premises consistent with the Permitted Uses described in Exhibit A
hereto, (iii) the Acquiring Company shall assume in Writing, in form reasonably acceptable to Landlord, all of Tenant’s obligations under this Lease, (iv) Tenant shall provide to Landlord such additional information regarding the
Acquiring Company as Landlord shall reasonably request, and (v) Tenant shall pay Landlord’s reasonable expenses incurred in connection therewith (up to a maximum amount of $5,000,00). Unless Landlord shall have objected to such assignment
or transfer by Tenant within ten (10) business days following Landlord’s receipt of the information or items described in (b)(i) and (iii) above, Landlord shall be deemed to have waived its right to object thereto. The transfers
described in this paragraph are referred to hereinafter as “Permitted Transfers.” Notwithstanding any other provision of this Lease, any public offering of shares or other ownership interest in Tenant or any private equity financing of
Tenant by one or more investors who regularly invest in private companies shall not be deemed an assignment and shall not be subject to Landlord approval. 
 Whether or not the Landlord consents, or is required to consent, to any assignment or subletting, the Tenant named herein (to the extent that the Tenant continues to exist as a distinct entity separate
and apart from the entity to which the Lease is assigned) shall remain fully and primarily liable for the obligations of the tenant hereunder, including, without limitation, the obligation to pay Annual Fixed Rent and Additional Rent provided under
this Lease. 
 The Tenant shall give the Landlord notice of any proposed sublease or assignment, whether or not the
Landlord’s consent is required hereunder, specifying the provisions of the 

  
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proposed subletting or assignment, including (i) the name and address of the proposed subtenant or assignee, (ii) a copy of the proposed subtenant’s or assignee’s most recent
annual financial statement, (iii) all of the terms and provisions upon which the proposed subletting or assignment is to be made. The Tenant shall reimburse the Landlord promptly for reasonable legal and other expenses incurred by the Landlord
in connection with any request by the Tenant for consent to any assignment or subletting, in the aggregate amount of up to $5,000.00. If this Lease is assigned, or if the Premises or any part thereof is sublet or occupied by anyone other than the
Tenant, the Landlord may, at any time during the continuance of an Event of Default hereunder without cure, collect rent and other charges from the assignee, sublessee or occupant and apply the net amount collected to the rent and other charges
herein reserved, but no such assignment, subletting, occupancy or collection shall be deemed a waiver of the prohibitions contained in this Section 6.8 or the acceptance of the assignee, sublessee or occupant as a tenant, or a release of the
Tenant from the further performance by the Tenant of covenants on the part of the Tenant herein contained. After deducting reasonable and ordinary sublease transaction expenses (including, without limitation, any broker’s commission),
unamortized tenant improvements paid by the Tenant and rent abatement, the Tenant shall pay to the Landlord fifty percent (50%) of any amounts the Tenant receives from any subtenant or assignee as rent, additional rent or other forms of
compensation or reimbursement other than those which are less than or equal to the then due and payable proportionate monthly share of Annual Fixed Rent, Additional Rent and all other monies due to Landlord pursuant to this Lease (allocable in the
case of a sublease to that portion of the Premises being subleased). The consent by the Landlord to an assignment or subletting shall not be construed to relieve the Tenant from obtaining the express consent in writing of the Landlord to any further
assignment or subletting. 
 Landlord may elect, prior to approving or disapproving any proposed assignment or sublease of more
than 50% of the entire Premises, to repossess the Premises, provided that such repossession shall not take effect (i) until twelve (12) months after the proposal by Tenant of an assignment of the entire Premises or (ii) until thirty
(30) days after the proposal by Tenant of a proposed sublease of the entire Premises. Landlord may thereafter lease the Premises in such a manner as the Landlord may in its sole discretion determine. In the event Landlord elects to repossess
the Premises as provided above, then all of the Tenant’s rights and obligations hereunder with respect to the Premises shall cease and shall be of no further force and effect. The provisions of this paragraph shall not apply to Permitted
Transfers. 
 ARTICLE VII 
 INDEMNITY AND INSURANCE 
 Section 7.1 - Indemnity. 

(a) To the maximum extent this agreement may be made effective according to law, the Tenant shall defend the Landlord from and against
all claims, proceedings, causes of actions and suits brought by third parties (collectively, “Claims”) and shall indemnify and hold harmless the Landlord from and against any resultant costs and expenses (including but not limited
to reasonable attorneys’ fees), losses or liabilities which the Landlord may be required to pay to third parties to the extent the Claim arises from any breach by Tenant of any obligation of Tenant under this Lease or from any act, omission or
negligence of the Tenant, or the Tenant’s 

  
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contractors, licensees, invitees, agents, servants or employees, or arising from any accident, injury or damage whatsoever caused to any person or property, occurring after the date that
possession of the Premises is first delivered to the Tenant and until the end of the Term and thereafter, so long as the Tenant is in occupancy of any part of the Premises, in or about the Premises or arising from any accident, injury or damage
occurring outside the Premises but within the Building, on the Land, on the access roads and ways, in the parking facilities provided pursuant to the Lease, within University Park or any adjacent area maintained by Landlord or any individual or
entity affiliated with Landlord, where such accident, injury or damage results, from an act or omission on the part of the Tenant or the Tenant’s agents or employees, licensees, invitees, servants or contractors. Notwithstanding the foregoing,
the Tenant’s obligations under this Section 7.1 (a) shall not apply to the extent such Claims arise or result from a matter for which the Landlord is obligated to indemnify the Tenant as set forth in Section 7.1 (b). 

(b) To the maximum extent this agreement may be made effective according to law, the Landlord shall defend the Tenant from and against
all Claims and shall indemnify and hold harmless the Tenant from and against any resultant costs and expenses (including but not limited to reasonable attorneys’ fees), losses or liabilities which the Tenant may be required to pay to third
parties to the extent due toloss of life, bodily or personal injury or property damage, arising from or out of all acts, failures, omissions or negligence of Landlord, its agents, employees or contractors which occur in or about the Premises or
arising from any accident, injury or damage occurring outside the Premises but within the Building, on the Land, on the access roads and ways, in the parking facilities provided pursuant to the Lease, within University Park or any adjacent area
maintained by Landlord or any individual or entity affiliated with Landlord., Notwithstanding the foregoing, the Landlord’s obligations under this Section 7. l(b) shall not apply to the extent such Claims arise or result from a matter for
which the Tenant is obligated to indemnify Landlord as set forth in Section 7.1 (a). 
 Section 7.2 - Liability Insurance.

 The Tenant agrees to maintain in full force from the date upon which the Tenant first enters the Premises for any reason,
throughout the Term, and thereafter, so long as the Tenant is in occupancy of any part of the Premises, a policy of commercial general liability insurance under which the Landlord (and any individuals or entities affiliated with the Landlord, any
ground lessor and any holder of a mortgage on the Property of whom the Tenant is notified by the Landlord) and the Tenant are named as additional insureds, and under which the insurer provides a contractual liability endorsement insuring against all
cost, expense and liability arising out of or based upon any and all claims, accidents, injuries and damages described in Section 7.1, in the broadest form of such coverage from time to time available. Each such policy shall be noncancellable
and nonamendable (to the extent that any proposed amendment reduces the limits or the scope of the insurance required in this Lease) with respect to the Landlord and such ground lessors and mortgagees without thirty (30) days’ prior notice
to the Landlord and such ground lessors and mortgagees and at the election of the Landlord, either a certificate of insurance or a duplicate original policy shall be delivered to the Landlord. The minimum limits of liability of such insurance as of
the Commencement Date shall be Five Million Dollars ($5,000,000.00) in the aggregate for combined bodily injury (or death) and damage to property ($3,000,000.00 per occurrence), and from time to time during the Term such limits of liability shall be
increased to reflect such higher limits as are customarily required pursuant to new leases of space in the Boston-Cambridge area with respect to similar properties. 

  
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 Section 7.3 - Personal Property at Risk. 

The Tenant agrees that all of the furnishings, fixtures, equipment, effects and property of every kind, nature and description of the
Tenant and of all persons claiming by, through or under the Tenant which, during the continuance of this Lease or any occupancy of the Premises by the Tenant or anyone claiming under the Tenant which, during the continuance of this Lease or any
occupancy of the Premises by the Tenant or anyone claiming under the Tenant, may be on the Premises or elsewhere in the Building or on the Lot or parking facilities provided hereby, shall be at the sole risk and hazard of the Tenant, and if the
whole or any part thereof shall be destroyed or damaged by fire, water or otherwise, or by the leakage or bursting of water pipes, steam pipes, or other pipes, by theft or from any other cause, no part of said loss or damage is to be charged to or
be borne by the Landlord, except that the Landlord shall in no event be exonerated from any liability to the Tenant or to any person, for any injury, loss, damage or liability to the extent caused by Landlord’s, its agents, employees,
licensees, invitees, servants or contractors gross negligence or willful misconduct. 
 Section 7.4 - Landlord’s Insurance.

 The Landlord shall carry such casualty and liability insurance upon and with respect to operations at the Building, as may
from time to time be deemed reasonably prudent by the Landlord or required by any mortgagee holding a mortgage thereon or any ground lessor of the Land, and in any event, insurance against loss by fire and the risks now covered by extended coverage
endorsement No. 4 in an amount equal to the replacement value of the Building, exclusive of foundations, site preparation and other nonrecurring construction costs. 
 Section 7.5 - Waiver of Subrogation. 
 Any insurance carried by either
party with respect to the Building, Land, Premises, parking facilities or any property therein or occurrences thereon shall, without further request by either party, if it can be so written without additional premium, or with an additional premium
which the other party elects to pay, include a clause or endorsement denying to the insurer rights of subrogation against the other party to the extent rights have been waived by the insured prior to occurrence of injury or loss. Each party,
notwithstanding any provisions of this Lease to the contrary, hereby waives any rights of recovery against the other for injury or loss, including, without limitation, injury or loss caused by negligence of such other party, due to hazards covered
by insurance containing such clause or endorsement to the extent of the indemnification received thereunder. 

  
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 ARTICLE VIII 
 CASUALTY AND EMINENT DOMAIN 
 Section 8.l - Restoration Following
Casualties. 
 If, during the Term, the Building or Premises shall be damaged by fire or casualty, subject to the exceptions
and limitations provided below, the Landlord shall proceed promptly to exercise reasonable efforts to restore the Building or Premises to substantially the condition thereof at the time of such damage, but the Landlord shall not be responsible for
delay in such restoration which may result from any External Cause. The Landlord shall have no obligation to expend in the reconstruction of the Building more than the actual amount of the insurance proceeds made available to the Landlord by its
insurer and not retained by the Landlord’s mortgagee or ground lessor. Any restoration of the Building or the Premises shall be altered to the extent necessary to comply with then current laws and applicable codes. 

Section 8.2 - Landlord’s Termination Election. 
 If the Landlord reasonably determines that the amount of insurance proceeds available to the Landlord is insufficient to cover the cost of restoring the Building or if in the reasonable opinion of the
Landlord the Building has been so damaged that it is appropriate for the Landlord to raze or substantially alter the Building, then the Landlord may terminate this Lease by giving notice to the Tenant within sixty (60) days after the date of
the casualty or such later date as is required to allow the Landlord a reasonable time to make either such determination. Any such termination shall be effective on the date designated in such notice from the Landlord, but in any event, not later
than sixty (60) days after such notice, and if no date is specified, effective upon the date of the Casualty or Taking. 
 Section 8.3
- Tenant’s Termination Election. 
 Unless the Landlord has earlier advised the Tenant of the Landlord’s
election to terminate this Lease pursuant to Section 8.2, or to restore the Premises and maintain this Lease in effect pursuant to Section 8.1, the Tenant shall have the right after the expiration of ninety (90) days after any casualty
which materially impairs a material portion of the Premises to give a written notice to the Landlord requiring the Landlord within ten (10) days thereafter to exercise or waive any right of the Landlord to terminate this Lease pursuant to
Section 8.2 as a result of such casualty and if the Landlord fails to give timely notice to the Tenant waiving any right under Section 8.2 to terminate this Lease based on such casualty, the Tenant shall be entitled, at any time until the
Landlord has given notice to the Tenant waiving such termination right, to give notice to the Landlord terminating this Lease. Where the Landlord is obligated to exercise reasonable efforts to restore the Premises, unless such restoration is
completed within nine (9) months from the date of the casualty or taking, such period to be subject, however, to extension where the delay in completion of such work is due to External Causes (but in no event beyond nine (9) months from
the date of the casualty or taking), the Tenant shall have the right to terminate this Lease at any time after the expiration of such nine-month (as extended) period until the restoration is substantially completed, such termination to take effect
as of the date of the Casualty or Taking. 

  
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 Section 8.4 - Casualty at Expiration of Lease. 

If the Premises shall be damaged by fire or casualty in such a manner that the Premises cannot, in the ordinary course, reasonably be
expected to be repaired within one hundred and twenty (120) days from the commencement of repair work and such damage occurs within the last eighteen (18) months of the Term (as the same may have been extended prior to such fire or
casualty), either party shall have the right, by giving notice to the other not later than sixty (60) days after such damage, to terminate this Lease, whereupon this Lease shall terminate as of the date of such Casualty. 

Section 8.5 - Eminent Domain. 
 Except as hereinafter provided, if the Premises, or such portion thereof as to render the balance (if reconstructed to the maximum extent practicable in the circumstances) unsuitable for the Tenant’s
purposes, shall be taken by condemnation or right of eminent domain, the Landlord or the Tenant shall have the right to terminate this Lease by notice to the other of its desire to do so, provided that such notice is given not later than thirty
(30) days after the effective date of such taking. If so much of the Building shall be so taken that the Landlord determines that it would be appropriate to raze or substantially alter the Building, the Landlord shall have the right to
terminate this Lease by giving notice to the Tenant of the Landlord’s desire to do so not later than thirty (30) days after the effective date of such taking. 
 Should any part of the Premises be so taken or condemned during the Term, and should this Lease be not terminated in accordance with the foregoing provisions, the Landlord agrees to use reasonable efforts
to put what may remain of the Premises into proper condition for use and occupation as nearly like the condition of the Premises prior to such taking as shall be practicable, subject, however, to applicable laws and codes then in existence and to
the availability of sufficient proceeds from the eminent domain taking not retained by any mortgagee or ground lessor. 
 Section 8.6 -
Rent After Casualty or Taking. 
 If the Premises shall be damaged by fire or other casualty, except as provided below,
the Annual Fixed Rent and Additional Rent shall be justly and equitably abated and reduced according to the nature and extent of the loss of use thereof suffered by the Tenant, from and after the date of the Casualty or Taking until the Premises
shall be restored to substantially the same condition as immediately prior to such Casualty or Taking. In the event of a taking which permanently reduces the area of the Premises, a just proportion of the Annual Fixed Rent shall be abated for the
remainder of the Term. 
 Section 8.7 - Taking Award. 
 Except as otherwise provided in Section 8.7, the Landlord shall have and hereby reserves and accepts, and the Tenant hereby grants and assigns to the Landlord, all rights to recover for damages to
the Building and the Land, and the leasehold interest hereby created, and to compensation accrued or hereafter to accrue by reason of such taking, damage or destruction, as aforesaid, and by way of confirming the foregoing, the Tenant hereby grants
and assigns to the Landlord, all rights to such damages or compensation. Nothing contained herein shall be 

  
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construed to prevent the Tenant from prosecuting in any condemnation proceedings a claim for relocation expenses, provided that such action shall not affect the amount of compensation otherwise
recoverable by the Landlord from the taking authority pursuant to the preceding sentence. 
 ARTICLE IX 

DEFAULT 
 Section 9.1
- Tenant’s Default. 
 Each of the following shall constitute an Event of Default: 

 

	 	(a)	Failure on the part of the Tenant to pay the Annual Fixed Rent, Additional Rent or other charges for which provision is made herein on or before the date on which the
same become due and payable, if such condition continues for five (5) business days after written notice that the same are due; provided, however if Tenant shall fail to pay any of the foregoing (after receipt by Tenant of written notice from
Landlord) when due two (2) times in any period of twelve (12) consecutive months, then Landlord shall not be required to give notice to Tenant of any future failure to pay during the remainder of the Term and any extension thereof, and
such failure shall thereafter constitute an Event of Default if not cured within five (5) business days after the same are due. 

  

	 	(b)	Failure on the part of the Tenant to perform or observe any other term or condition contained in this Lease if the Tenant shall not cure such failure within thirty
(30) days after written notice from the Landlord to the Tenant thereof, provided that in the case of breaches of obligations under this Lease which are susceptible to cure but cannot be cured within thirty (30) days through the exercise of
due diligence, so long as the Tenant commences such cure within thirty (30) days, such breach remains susceptible to cure, and the Tenant diligently pursues such cure, such breach shall not be deemed to create an Event of Default.

  

	 	(c)	The taking of the estate hereby created on execution or by other process of law; or a judicial declaration that the Tenant is bankrupt or insolvent according to law; or
any assignment of the property of the Tenant for the benefit of creditors; or the appointment of a receiver, guardian, conservator, trustee in bankruptcy or other similar officer to take charge of all or any substantial part of the Tenant’s
property by a court of competent jurisdiction; or the filing of an involuntary petition against the Tenant under any provisions of the bankruptcy act now or hereafter enacted if the same is not dismissed within ninety (90) days; the filing by
the Tenant of any voluntary petition for relief under provisions of any bankruptcy law now or hereafter enacted. 

If an Event of Default shall occur and be continuing without cure, then, in any such case, whether or not the Term shall have begun, the
Landlord lawfully may, immediately or at any 

  
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time thereafter, give written notice to the Tenant specifying the Event of Default and this Lease shall come to an end on the date specified therein as fully and completely as if such date were
the date herein originally fixed for the expiration of the Lease Term, and the Tenant will then quit and surrender the Premises to the Landlord, but the Tenant shall remain liable as hereinafter provided. 

Section 9.2 - Damages. 
 In the event that this Lease is terminated, the Tenant covenants to pay to the Landlord forthwith on the Landlord’s demand, as compensation, an amount (the Lump Sum Payment) equal to the excess, if
any, of the discounted present value of the total rent reserved for the remainder of the Term over the then discounted present fair rental value of the Premises for the remainder of the Term. In calculating the rent reserved, there shall be
included, in addition to the Annual Fixed Rent and all Additional Rent, the value of all other considerations agreed to be paid or performed by the Tenant over the remainder of the Term. In calculating the amounts to be paid by the Tenant under the
foregoing covenant, the Tenant shall be credited with the net proceeds of any rent obtained by reletting the Premises, after deducting all the Landlord’s expenses in connection with such reletting, including, without limitation, all
repossession costs, brokerage commissions, fees for legal services and expenses of preparing the Premises for such reletting and Landlord shall use commercially reasonable efforts to relet the Premises. The Landlord shall use commercially reasonable
efforts to relet the Premises, or any part or parts thereof, for a term or terms which may, at the Landlord’s option, exceed or be equal to or less than the period which would otherwise have constituted the balance of the Term, and may grant
such concessions and free rent as the Landlord in its reasonable commercial judgment considers advisable or necessary to relet the same and shall make such alterations, repairs and improvements in the Premises as the Landlord in its reasonable
commercial judgment considers advisable or necessary to relet the same. No action of the Landlord in accordance with foregoing or failure to relet or to collect rent under reletting shall operate to release or reduce the Tenant’s liability
except as provided herein. The Landlord shall be entitled to seek to rent other properties of the Landlord prior to reletting the Premises. 

Section 9.3 - Cumulative Rights. 
 The specific remedies to which the Landlord may resort under the terms of this Lease are cumulative and are not intended to be exclusive of any other remedies or means of redress to which it may be
lawfully entitled in case of any breach or threatened breach by the Tenant of any provisions of this Lease. In addition to the other remedies provided in this Lease, the Landlord shall be entitled to the restraint by injunction of the violation or
attempted or threatened violation of any of the covenants, conditions or provisions of this Lease or to a decree compelling specific performance of any such covenants, conditions or provisions. Nothing contained in this Lease shall limit or
prejudice the right of the Landlord to prove for and obtain in proceedings for bankruptcy, insolvency or like proceedings by reason of the termination of this Lease, an amount equal to the maximum allowed by any statute or rule of law in effect at
the time when, and governing the proceedings in which, the damages are to be proved, whether or not the amount be greater, equal to, or less than the amount of the loss or damages referred to above. 

Section 9.4 - Landlord’s Self-help. 

  
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 If the Tenant shall at any time default in the performance of any obligation under this
Lease, the Landlord shall have the right, but not the obligation, after any applicable cure period and upon reasonable, but in no event more than ten (10) days’, notice to the Tenant (except in case of emergency in which case no notice
need be given), to perform such obligation. The Landlord may exercise its rights under this Section without waiving any other of its rights or releasing the Tenant from any of its obligations under this Lease. 

Section 9.5 - Enforcement Expenses; Litigation. 
 In the event that either party prevails in litigation commenced to enforce any right or obligation hereunder, such party shall be entitled to recover from the other party all reasonable costs and expenses
incurred by such party in connection with the litigation. 
 If either party hereto be made or becomes a party to any litigation
commenced by or against the other party by or against a third party, or incurs costs or expenses related to such litigation, involving any part of the Property and the enforcement of any of the rights, obligations or remedies of such party, then the
party becoming involved in any such litigation because of a claim against such other party hereto shall receive from such other party hereto all costs and reasonable attorneys’ fees incurred by such party in such litigation. 

Section 9.6 - Interest on Overdue Payments. 
 Any Annual Fixed Rent and Additional Rent not paid within any applicable grace period shall bear interest from the date due to the Landlord until paid at the variable rate (the “Default Interest
Rate”) equal to the higher of (i) the rate at which interest accrues on amounts not paid when due under the terms of the Landlord’s financing for the Building, as from time to time in effect, and (ii) one and one-half percent
(1.5%) per month. 
 Section 9.7 - Landlord’s Right to Notice and Cure. 

The Landlord shall in no event be in default in the performance of any of the Landlord’s obligations hereunder unless and until the
Landlord shall have failed to perform such obligations within thirty (30) days after notice by the Tenant to the Landlord expressly specifying wherein the Landlord has failed to perform any such obligation, provided that in the case of breaches
of obligations under this Lease which are susceptible to cure but cannot be cured within thirty (30) days through the exercise of due diligence, so long as the Landlord commences such cure within thirty (30) days, such breach remains
susceptible to cure, and the Landlord diligently pursues such cure, such breach shall not be deemed an event of default, under this Agreement. In the event of a breach or default of this Agreement by the Landlord, Tenant shall be afforded any and
all rights and remedies afforded at law or in equity. 

  
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 ARTICLE X 
 MORTGAGEES’ AND GROUND LESSORS’ RIGHTS 
 Section 10.1 -
Subordination. 
 This Lease shall, at the election of the holder of any mortgage or ground lease on the Property, be
subject and subordinate to any and all mortgages or ground leases on the Property, so that the lien of any such mortgage or ground lease shall be superior to all rights hereby or hereafter vested in the Tenant. Notwithstanding the foregoing,
Tenant’s rights under this Lease and use and enjoyment of the Premises shall not be disturbed by any such mortgagee or ground lessor so long as there is no uncured Event of Default, and Tenant shall be entitled to receive executed agreements
from same to such effect. 
 Section 10.2 - Prepayment of Rent not to Bind Mortgagee. 

No Annual Fixed Rent, Additional Rent, or any other charge payable to the Landlord shall be paid more than thirty (30) days prior to
the due date thereof under the terms of this Lease and payments made in violation of this provision shall (except to the extent that such payments are actually received by a mortgagee or ground lessor) be a nullity as against such mortgagee or
ground lessor and the Tenant shall be liable for the amount of such payments to such mortgagee or ground lessor. 
 Section 10.3 -
Tenant’s Duty to Notify Mortgagee; Mortgagee’s Ability to Cure. 
 No act or failure to act on the part of the
Landlord which would entitle the Tenant under the terms of this Lease, or by law, to be relieved of the Tenant’s obligations to pay Annual Fixed Rent or Additional Rent hereunder or to terminate this Lease, shall result in a release or
termination of such obligations of the Tenant or a termination of this Lease unless (i) the Tenant shall have first given written notice of the Landlord’s act or failure to act to the Landlord’s mortgagees or ground lessors of record,
if any of whose identity and address the Tenant shall have been given notice, specifying the act or failure to act on the part of the Landlord which would give basis to the Tenant’s rights; and (ii) such mortgagees or ground lessors, after
receipt of such notice, have failed or refused to correct or cure the condition complained of within a reasonable time thereafter, which shall include a reasonable time for such mortgagee or ground lessors, but in no event more than thirty
(30) days after receipt of such notice, to obtain possession of the Property if possession is necessary for the mortgagee or ground lessor to correct or cure the condition and if the mortgagee or ground lessor notifies the Tenant of its
intention to take possession of the Property and correct or cure such condition. 
 Section 10.4 - Estoppel Certificates.

 The Tenant shall from time to time, upon not less than fifteen (15) days’ prior written request by the Landlord,
execute, acknowledge and deliver to the Landlord a statement in writing certifying to the Landlord or an independent third party, with a true and correct copy of this Lease attached thereto, to the extent such statements continue to be true and
accurate, (i) that this Lease is unmodified and in full force and effect (or, if there have been any modifications, that the same is in full force and effect as modified and stating the modifications); (ii) that the Tenant has

  
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no knowledge of any defenses, offsets or counterclaims against its obligations to pay the Annual Fixed Rent and Additional Rent and to perform its other covenants under this Lease (or if there
are any defenses, offsets, or counterclaims, setting them forth in reasonable detail); (iii) that there are no known uncured defaults of the Landlord or the Tenant under this Lease (or if there are known defaults, setting them forth in
reasonable detail); (iv) the dates to which the Annual Fixed Rent, Additional Rent and other charges have been paid; (v) that the Tenant has accepted, is satisfied with, and is in full possession of the Premises, including all
improvements, additions and alterations thereto required to be made by Landlord under the Lease; (vi) that the Landlord has satisfactorily complied with all of the requirements and conditions precedent to the commencement of the Term of the
Lease as specified in the Lease; (vii) that the Tenant has been in occupancy since the Commencement Date and paying rent since the specified dates; (viii) that no monetary or other considerations, including, but not limited to, rental
concessions for Landlord, special tenant improvements or Landlord’s assumption of prior lease obligations of Tenant have been granted to Tenant by Landlord for entering into Lease, except as specified; (ix) that Tenant has no notice of a
prior assignment, hypothecation, or pledge of rents or of the Lease; (x) that the Lease represents the entire agreement between Landlord and Tenant; (xi) that no prepayment or reduction of rent and no modification, termination or
acceptance of Lease will be valid as to the party to whom such certificate is addressed without the consent of such party; (xii) that any notice to Tenant may be given it in accordance with Section 12.2 hereof; and (xiii) such other
matters with respect to the Tenant and this Lease as the Landlord may reasonably request. On the Commencement Date, the Tenant shall, at the request of the Landlord, promptly execute, acknowledge and deliver to the Landlord a statement in writing
that the Commencement Date has occurred, that the Annual Fixed Rent has begun to accrue and that the Tenant has taken occupancy of the Premises. Any statement delivered pursuant to this Section may be relied upon by any prospective purchaser,
mortgagee or ground lessor of the Premises and shall be binding on the Tenant. 
 Landlord shall from time to time, upon not
less than fifteen (15) days’ prior written request by the Tenant, execute, acknowledge and deliver to the Tenant a statement in writing certifying to the Tenant or an independent third party, with a true and correct copy of this Lease
attached thereto, to the extent such statements continue to be true and accurate (i) that this Lease is unmodified and in full force and effect (or, if there have been any modifications, that the same is in full force and effect as modified and
stating the modifications); (ii) that the Landlord has no knowledge of any defenses, offsets or counterclaims against its obligations to perform its covenants under this Lease (or if there are any defenses, offsets, or counterclaims, setting
them forth in reasonable detail); (iii) that there are no known uncured defaults of the Tenant or the Landlord under this Lease (or if there are known defaults, setting them forth in reasonable detail; (iv) the dates to which the Annual
Fixed Rent, Additional Rent and other charges have been paid, and (v) that the Tenant is in full possession of the Premises, including all improvements, additions and alterations thereto required to be made by Landlord under the Lease;
(vi) that the Tenant has satisfactorily complied with all of the requirements and conditions precedent to the commencement of the Term of the Lease as specified in the Lease; (vii) that the Tenant has been in occupancy since the
Commencement Date and paying rent since the specified dates; (viii) that no monetary or other considerations, including, but not limited to, rental concessions for Landlord, special tenant improvements or Landlord’s assumption of prior
lease obligations of Tenant have been granted to Tenant by Landlord for entering into the Lease, except as specified; (ix) such other matters with respect to the Tenant and this Lease as the 

  
 30 

 
Tenant may reasonably request. Any statement delivered pursuant to this Section may be relied upon by any prospective lender of Tenant, any prospective assignee or subtenant of Tenant or any
prospective purchaser of Tenant or Tenant’s assets, and shall be binding on the Landlord. 
 ARTICLE XI 

MISCELLANEOUS 

Section 11.1 - Notice of Lease. 
 The Tenant agrees not to record this Lease, but upon request of either party, both parties shall execute and deliver a memorandum of this Lease in form appropriate for recording or registration, an
instrument acknowledging the Commencement Date of the Term, and if this Lease is terminated before the Term expires, an instrument in such form acknowledging the date of termination. 
 Section 11.2 - Notices. 
 Whenever any notice, approval, consent,
request, election, offer or acceptance is given or made pursuant to this Lease, it shall be in writing. Communications and payments shall be addressed, if to the Landlord, at the Landlord’s Address for Notices as set forth in Exhibit A or at
such other address as may have been specified by prior notice to the Tenant; and if to the Tenant, at the Tenant’s Address for Notices or at such other place as may have been specified by prior notice to the Landlord. Any communication so
addressed shall be deemed duly given on the earlier of (i) the date received or (ii) on the third business day following the day of mailing if mailed by registered or certified mail, return receipt requested. If the Landlord by notice to
the Tenant at any time designates some other person to receive payments or notices, all payments or notices thereafter by the Tenant shall be paid or given to the agent designated until notice to the contrary is received by the Tenant from the
Landlord. 
 Section 11.3 - Authority. 
 Landlord represents and warrants that the individual executing this Lease on behalf of Landlord is duly authorized to execute and deliver this Lease on behalf of said entity, that said entity is duly
authorized to enter into this Lease, and that this Lease is enforceable against said entity in accordance with its terms. 

Tenant represents and warrants that the individual executing this Lease on behalf of Tenant is duly authorized to execute and deliver
this Lease on behalf of said entity, that said entity is duly authorized to enter into this Lease, and that this Lease is enforceable against said entity in accordance with its terms. 
 Section 11.4 - Successors and Limitation on Liability on the Landlord. 
 The obligations of this Lease shall run with the land, and this Lease shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns, except that the
original Landlord named herein and each successor Landlord shall be liable only for obligations accruing during the period of its ownership. The obligations of the Landlord shall be 

  
 31 

 
binding upon the assets of the Landlord consisting of an equity ownership of the Property (and including any proceeds realized from the sale of such Property) but not upon other assets of the
Landlord and neither the Tenant, nor anyone claiming by, under or through the Tenant, shall be entitled to obtain any judgment creating personal liability on the part of the Landlord or enforcing any obligations of the Landlord against any assets of
the Landlord other than an equity ownership of the Property. 
 Section 11.5 - Waivers by the Landlord. 

The failure of the Landlord or the Tenant to seek redress for violation of, or to insist upon strict performance of, any covenant or
condition of this Lease, shall not be deemed a waiver of such violation nor prevent a subsequent act, which would have originally constituted a violation, from having all the force and effect of an original violation. The receipt by the Landlord of
Annual Fixed Rent or Additional Rent with knowledge of the breach of any covenant of this Lease shall not be deemed a waiver of such breach. In the event of a breach or default of this Agreement by Landlord, any decision not to terminate this Lease
shall not be deemed a waiver of such breach by Tenant. No provision of this Lease shall be deemed to have been waived by the Landlord or the Tenant, as the case may be, unless such waiver is in writing signed by the Landlord or the Tenant, as the
case may be. No consent or waiver, express or implied, by the Landlord or Tenant to or of any breach of any agreement or duty shall be construed as a waiver or consent to or of any other breach of the same or any other agreement or duty. 

Section 11.6 - Acceptance of Partial Payments of Rent. 
 No acceptance by the Landlord of a lesser sum than the Annual Fixed Rent and Additional Rent then due shall be deemed to be other than a partial installment of such rent due, nor shall any endorsement or
statement on any check or any letter accompanying any check or payment as rent be deemed an accord and satisfaction and the Landlord may accept such check or payment without prejudice to the Landlord’s right to recover the balance of such
installment or pursue any other remedy in this Lease provided. The delivery of keys to any employee of the Landlord or to the Landlord’s agent or any employee thereof shall not operate as a termination of this Lease or a surrender of the
Premises. 
 Section 11.7 - Interpretation and Partial Invalidity. 

If any term of this Lease, or the application thereof to any person or circumstances, shall to any extent be invalid or unenforceable,
the remainder of this Lease, or the application of such term to persons or circumstances other than those as to which it is invalid or unenforceable, shall not be affected thereby, and each term of this Lease shall be valid and enforceable to the
fullest extent permitted by law. The titles of the Articles are for convenience only and not to be considered in construing this Lease. This Lease contains all of the agreements of the parties with respect to the subject matter thereof and
supersedes all prior dealings between them with respect to such subject matter. 
 Section 11.8 - Quiet Enjoyment. 

So long as the Tenant pays Annual Fixed Rent and Additional Rent (subject to Tenant’s right to abate rent as set forth herein),
performs all other Tenant covenants of this Lease and observes all conditions hereof, the Tenant shall peaceably and quietly have, hold and enjoy the Premises free of any claims by, through or under the Landlord. 

  
 32 

 Section 11.9 - Brokerage. 

Each party represents and warrants to the other that it has had no dealings with any broker or agent in connection with this Lease other
than Colliers Meredith & Grew and CB Richard Ellis (“Acknowledged Brokers”) and shall indemnify and hold harmless the other from claims for any brokerage commission to a broker other than the Acknowledged Brokers arising out of
the other party’s actions. 
 Section 11.10 - Surrender of Premises and Holding Over. 

The Tenant shall surrender possession of the Premises on the last day of the Term and the Tenant waives the right to any notice of
termination or notice to quit. The Tenant covenants that upon the expiration or sooner termination of this Lease, it shall, without notice, deliver up and surrender possession of the Premises in the same condition in which the Tenant has agreed to
keep the same during the continuance of this Lease and in accordance with the terms hereof, normal wear and tear and damage by fire or other casualty excepted, first removing therefrom all goods and effects of the Tenant and any leasehold
improvements Landlord specified for removal pursuant to Section 4.2, and repairing all damage caused by such removal. Upon the expiration of this Lease or if the Premises should be abandoned by the Tenant, or this Lease should terminate for any
cause, and at the time of such expiration, vacation, abandonment or termination, the Tenant or Tenant’s agents, subtenants or any other person should leave any property of any kind or character on or in the Premises, the fact of such leaving of
property on or in the Premises shall be conclusive evidence of intent by the Tenant, and individuals and entities deriving their rights through the Tenant, to abandon such property so left in or upon the Premises, and such leaving shall constitute
abandonment of the property. Landlord shall have the right and authority without notice to the Tenant or anyone else, to remove and destroy, or to sell or authorize disposal of such property, or any part thereof, without being in any way liable to
the Tenant therefor and the proceeds thereof shall belong to the Landlord as compensation for the removal and disposition of such property. 
 If the Tenant fails to surrender possession of the Premises upon the expiration or sooner termination of this Lease, the Tenant shall pay to Landlord, as rent for any period after the expiration or sooner
termination of this Lease an amount equal to one hundred fifty percent (150%) of the Annual Fixed Rent and the Additional Rent required to be paid under this Lease as applied to any period in which the Tenant shall remain in possession.
Acceptance by the Landlord of such payments shall not constitute a consent to a holdover hereunder or result in a renewal or extension of the Tenant’s rights of occupancy. Such payments shall be in addition to and shall not affect or limit the
Landlord’s right of re-entry, Landlord’s right to collect such damages as may be available at law, or any other rights of the Landlord under this Lease or as provided by law. 

  
 33 

 Section 11.11 - Ground Lease. 

This Lease is in all respects subject to the ground lease (the “Ground Lease”) between the Landlord as lessee and Massachusetts
Institute of Technology (“MIT”) as lessor dated as of August 20, 1986. If any provision of the Ground Lease shall be inconsistent with the provisions of this Lease, the provisions of the Ground Lease shall be deemed to limit the
provisions hereof, except as are expressly otherwise provided in a written agreement signed by MIT, the Landlord and the Tenant. 

Section 11.12 - Security Deposit. 
 (a) Letter of Credit. 
 Within thirty (30) days of the execution and
delivery of this Lease, Tenant has delivered to Landlord as security for the performance of the obligations of Tenant hereunder a cash deposit or a letter of credit in the amount specified in Section 1.3 in accordance with this Section (as
renewed, replaced, increased and/or reduced pursuant to this Section, the “Letter of Credit”). The Letter of Credit shall be in the form attached as Exhibit G to this Lease or such other form as Landlord may reasonably approve. If
there is more than one Letter of Credit so delivered by Tenant, such Letters of Credit shall be collectively hereinafter referred to as the “Letter of Credit”. The Letter of Credit (i) shall be irrevocable and shall be issued by a
commercial bank reasonably acceptable to Landlord, (ii) shall require only the presentation to the issuer of a certificate of the holder of the Letter of Credit stating either (a) that a default has occurred under this Lease after the
expiration of any applicable notice and cure period (or stating that transmittal of a default notice is barred by applicable bankruptcy or other law if such is the case) or (b) stating that Tenant has not delivered to Landlord a new Letter of
Credit having a commencement date immediately following the expiration of the existing Letter of Credit in accordance with the requirements of the Lease, (iii) shall be payable to Landlord and its successors in interest as the Landlord and
shall be freely transferable without cost to any such successor or any lender holding a collateral assignment of Landlord’s interest in the Lease, (iv) shall be for an initial term of not less than one year and contain a provision that
such term shall be automatically renewed for successive one-year periods unless the issuer shall, at least thirty (30) days prior to the scheduled expiration date, give Landlord written notice of such nonrenewal, and (v) shall otherwise be
in form and substance reasonably acceptable to Landlord. Notwithstanding the foregoing, the term of the Letter of Credit for the final period of the Term shall be for a term ending not earlier then the date sixty (60) days after the last day of
the Term. 
 If Tenant shall be in default under the Lease, after the expiration of any applicable notice or cure period (or if
transmittal of a default or other notice is stayed or barred by applicable bankruptcy or other law), Landlord shall be entitled to draw upon the Letter of Credit to the extent reasonably necessary to cure such default. If, not less than thirty
(30) days before the scheduled expiration of the Letter of Credit, Tenant has not delivered to Landlord a new Letter of Credit having a commencement date immediately following the expiration of the existing Letter of Credit in accordance with
this Section, Landlord shall also have the right to draw upon the full amount of the Letter of Credit without giving any further notice to Tenant. Landlord may, but shall not be obligated to, apply the amount so drawn to the extent necessary to cure
Tenant’s default under the Lease. Any funds drawn by Landlord on the Letter of Credit and not applied 

  
 34 

 
against amounts due hereunder shall be held by Landlord as a cash security deposit, provided that Landlord shall have no fiduciary duty with regard to such amounts, shall have the right to
commingle such amounts with other funds of Landlord, and shall pay no interest on such amounts. After any application of the Letter of Credit by Landlord in accordance with this paragraph, Tenant shall reinstate the Letter of Credit to the amount
then required to be maintained hereunder, within thirty (30) days of demand. Within sixty (60) days after the expiration or earlier termination of the Term the Letter of Credit and any cash security deposit then being held by Landlord, to
the extent not applied, shall be returned to the Tenant provided that no Event of Default is then continuing. 
 (b)
Pledge. 
 The Landlord may pledge its right and interest in and to the cash deposit or Letter of Credit to any mortgagee or
ground lessor and, in order to perfect such pledge, have such cash deposit or Letter of Credit held in escrow by such mortgagee or ground lessee or grant such mortgagee or ground lessee a security interest therein. In connection with any such pledge
or grant of security interest by the Landlord to a mortgagee or ground lessee (“Pledgee”), Tenant covenants and agrees to cooperate as reasonably requested by the Landlord, in order to permit the Landlord to implement the same on terms and
conditions reasonably required by such Pledgee. 
 (c) Transfer of Security Deposit. 

In the event of a sale or other transfer of the Building or transfer of this Lease, Landlord shall transfer the cash deposit or Letter of
Credit to the transferee, and Landlord shall thereupon be released by Tenant from all liability for the return of such security. The provisions hereof shall apply to every transfer or assignment made of the security to such a transferee. Tenant
further covenants that it will not assign or encumber or attempt to assign or encumber the Letter of Credit or the proceeds thereof, and that neither Landlord nor its successors or assigns shall be bound by any assignment, encumbrance, attempted
assignment or attempted encumbrance. 
 Section 11.13 - Financial Reporting. 

Tenant shall from time to time (but at least annually) on the anniversary of the Lease provide Landlord with financial statements of
Tenant, together with related statements of Tenant’s operations for Tenant’s most recent fiscal year then ended, certified by an independent certified public accounting firm. 
 Section 11.14 - Cambridge Employment Plan. 
 The Tenant agrees to sign
an agreement with the Employment and Training Agency designated by the City Manager of the City of Cambridge as provided in subsections (a)-(g) of Section 24-4 of Ordinance Number 1005 of the City of Cambridge, adopted April 23, 1984.

 Section 11.15 - Parking and Transportation Demand Management. 

Tenant covenants and agrees to work cooperatively with Landlord to develop a parking and transportation demand management
(“PTDM”) program that comprises part of a 

  
 35 

 
comprehensive PTDM for University Park, provided that such cooperation shall be at no expense to Tenant. In connection therewith, the use of single occupant vehicle commuting will be discouraged
and the use of alternative modes of transportation and/or alternative work hours will be promoted. Without limitation of the foregoing, Tenant agrees that its PTDM program (and Tenant will require in any sublease or occupancy agreement permitting
occupancy in the Premises that such occupant’s PTDM program) will include offering a subsidized MBTA transit pass, either constituting a full subsidy or a subsidy in an amount equal to the maximum deductible amount therefore allowed under the
federal tax code, to any employee working in the Premises requesting one. Tenant agrees to comply with the traffic mitigation measures required by the City of Cambridge, and Tenant shall otherwise comply with all legal requirements of the City of
Cambridge pertaining thereto. 
 Section 11.16 - Cancellation of Existing Lease. 

It is hereby acknowledged by the parties hereto that Landlord or its predecessor in interest and Tenant or its predecessor in interest
entered into two (2) previous leases in the Building, one on July 30, 2004 and one on September 4, 2008, as the same may have been amended (collectively, “Existing Lease”). As of the date of this Lease, Tenant releases and
exculpates Landlord from any liability arising from the Existing Lease, and Landlord releases and exculpates Tenant from any liability arising from the Existing Lease unless such liability is due to Tenant’s act of omission. It is hereby
acknowledged and agreed that the Existing Lease shall become null and void as of the date of this Lease. Notwithstanding the foregoing, the provisions of this Section 11.16 shall not apply to those provisions of the Existing Lease that by their
terms would otherwise survive the expiration or earlier termination thereof (e.g., annual reconciliation of operating expenses and real estate taxes). 

  
 36 

 IN WITNESS WHEREOF, this Lease has been executed and delivered as of the date first above written as a
sealed instrument. 
  

					
	 LANDLORD:

 
 THIRTY-EIGHT SIDNEY STREET LIMITED PARTNERSHIP

 

	 By:
	 	 Forest City 38 Sidney Street, Inc.,
 a Massachusetts corporation

			
		 	 By:
	 	  /s/ Michael Farley

		 	 Name: Michael Farley

		 	 Title:   Vice President

	
	 TENANT:

	
	 AGIOS PHARMACEUTICALS, INC.,

a Delaware corporation

		
	 By:
	 	  /s/ David Schenkein

	 Name:
	 	 David Schenkein

	 Title:
	 	 CEO

  
 37 

 EXHIBIT A 
 Basic Lease Terms 
  

	 Premises: 
	The Premises shall be comprised of approximately 38,536 rentable square feet made up of the Existing Premises and the Expansion Premises. 

 

	 Existing Premises: 
	Approximately 21,608 rentable square feet located on the second floor and currently occupied by Tenant, as shown on Exhibit B. 

 

	 Existing Premises Term Commencement Date: 
	The date of this Lease. 

  

	 Existing Premises Rent Commencement Date: 
	The date of this Lease. 

  

	 Existing Premises Annual Fixed Rent for the Term: 
	Date of Lease through 8/31/2010: 

 $54,00/rentable
square foot NNN for 19,093 rentable square feet; 
 $34.00/rentable square foot NNN for 1,729 rentable square feet; 

$25.00/rentable square foot NNN for 786 rentable square feet. 

 

	 	9/l/2010 through Expansion Premises Rent Commencement Date for the Third Floor Expansion Premises: 

$55,00/ rentable square foot NNN for 19,093 rentable square feet; 

$35/rentable square foot NNN for 1,729 rentable square feet; 
 $25/ rentable square foot NNN for 786 rentable square feet, 
  

	 	Thereafter: The same Annual Fixed Rent per rentable square foot as the Expansion Premises. 

 

	 Expansion Premises: 
	Approximately 16,928 rentable square feet, with 3,755 rentable square feet located on the second floor (“Second Floor Expansion Premises”) and 13,173 rentable square feet located on
the third floor (“Third Floor Expansion Premises”) as shown on Exhibit B. 

  

	 Expansion Premises Rent Commencement Date: 
	The date that is five (5) months after the applicable Expansion Premises Term Commencement Date. 

 

	 Expansion Premises Term Commencement: 
	The Expansion Premises Term Commencement Date commences on the delivery of the applicable Expansion Premises, and the term of this Lease expires on the last day of the sixtieth (60th) month
following the Expansion Premises Rent Commencement Date for the Third Floor Expansion Premises (the “Initial Term”). The Landlord will use commercially reasonable efforts to deliver the Third Floor Expansion Premises to the Tenant within
ninety (90) days of the full execution of a lease amendment with ETEX. As a 

  
 (i)

	 	 term of said lease amendment with ETEX, Landlord shall provide for notice to be delivered from ETEX to Landlord in the event that
delivery of the Third Floor Expansion Premises will be delayed beyond the ninety (90) day period, and Landlord agrees to provide similar notice to Tenant if Landlord receives a delay notice from ETEX. If the Third Floor Expansion Premises Term
Commencement Date has not occurred on or before December 1, 2010, Tenant shall have the right upon written notice to Landlord, to terminate this Lease and Tenant shall be reimbursed for the costs and expenses incurred by or on behalf of
Tenant in connection with the Leasehold Improvements eligible for disbursement from the Leasehold Improvements Allowance, which reimbursable amount will not exceed $300,000.00. 

 

	 Expansion Premises Annual Fixed Rent: 
	Second Floor Expansion Premises: $57.25 per rentable square foot, NNN from the Expansion Premises Rent Commencement Date for the Second Floor Expansion Premises to the Expansion Premises
Rent Commencement Date for the Third Floor Expansion Premises. 

  

	 Expansion Premises: Commencing with the Expansion Premises Rent Commencement Date for the Third Floor Expansion Premises:

	 	Months 1-12: $57.25 per rentable square foot, NNN 

 Months
13-24: $58,25 per rentable square foot, NNN 
 Months 25-36: $59.25.per rentable square foot, NNN 

Months 37-48: $60.25 per rentable square foot, NNN 
 Months 49-60: $61.25 per rentable square foot, NNN 
  

	 Security Deposit: 
	$ 570,814.00 

  

	 Landlord’s Address for Notices: 
	Thirty-Eight Sidney Street Limited Partnership 

 Forest
City Commercial Group, Inc. 
 38 Sidney Street 
 Cambridge, Massachusetts 02139 
  

	 	With a copy to: 

 Forest City
Commercial Group, Inc. 
 1360 Terminal Tower 
 50 Public Square 
 Cleveland, Ohio 44113 

Attention: General Counsel 
  

	 	Forest City Commercial Management, Inc. 

 38 Sidney Street 
 Cambridge, Massachusetts 02139-4234 

Attention: Michael Farley 

  
 (ii)

	 Parking Privileges: 
	During the Term, Tenant shall be entitled to use and shall pay for parking passes in accordance with (i) the following schedule and (ii) Section 2.4 of the Lease. Upon the date of this
Lease, Tenant shall lease a minimum of thirty-two (32) parking passes and may lease up to a maximum of fifty-eight (58) parking passes. Upon the Expansion Premises Rent Commencement Date, Tenant shall be obligated to lease a minimum of
fifty-eight (58) parking passes for the term of the Lease. Subject to availability, Tenant shall have the right to lease additional parking spaces from Landlord; such lease for additional parking spaces shall be on a month-to-month basis at the
then-prevailing fair market value for such parking spaces. 

  

	 Permitted Uses: 
	General business and administrative offices, biotechnology research, animal experimentation and customary accessory uses supporting the foregoing, as set forth in Section 6.1 of the Lease.

  

	 Tenant’s Address for Notices: 
	Agios Pharmaceuticals, Inc. 

 38 Sidney Street 

Cambridge, Massachusetts 02139 
  

	 	With a copy to: 

  

	 	Faber Daeufer & Rosenberg PC 

 950 Winter Street, Suite 4500 
 Waltham, MA 02145 

ATTN: Joseph L Faber 
  

	 Leasehold Improvements Allowance: 
	$3,200,000.00 

  

	 Total Rentable floor Area of Building: 
	121,622 rsf 

  
 (iii)

 

 
  

  
 

 
  

 EXHIBIT C 
 STANDARD SERVICES 
 The building standard services shall be defined by the Landlord and its
Management Agent, A listing of services shall be as promulgated from time to time by the Landlord and shall be further described in the Tenant Handbook. 
 The following services are provided by the Landlord: 
  

	 	A.	Regular maintenance of interior, exterior and parking lot landscaping and University Park common areas. 

 

	 	B.	Regular maintenance, sweeping and snow removal of building exterior areas such as roadways, driveways, sidewalks, parking areas and courtyard paving.

  

	 	C.	Complete interior and exterior cleaning of all windows two times per year. 

 

	 	D.	Daily, weekday maintenance of hallways, passenger elevators, common area bathrooms, lobby areas and vestibules, 

 

	 	E.	Periodic cleaning of stairwells, freight elevators, and back of house areas. 

 

	 	F.	Daily, weekday rubbish removal of all tenant trash receptacles. 

  

	 	G.	Daily, weekday clearing of Tenant space to building standard. 

  

	 	H.	Maintenance and repair of base building surveillance and alarm equipment, mechanical, electrical, plumbing and life safety systems. 

 

	 	I.	Building surveillance and alarm system operation and live monitoring service to building standard specifications 

 

	 	J.	Conditioned water for HVAC purposes shall be provided to the Premises from central mechanical equipment. 

 

	 	K.	Utilities for all interior common areas and exterior building and parking lighting. 

 EXHIBIT D 
 RULES AND REGULATIONS 
 DEFINITIONS 

Wherever in these Rules and Regulations the word “Tenant” is used, it shall be taken to apply to and include the Tenant and its agents,
employees, invitees, licensees, contractors, any subtenants and is to be deemed of such number and gender as the circumstances require. The word “Premises” is to be taken to include the space covered by the Lease. The word
“Landlord” shall be taken to include the employees and agents of Landlord. Other capitalized terms used but not defined herein shall have the meanings set forth in the Lease. 
 GENERAL USE OF BUILDING 
  

	 	A.	Space for admitting natural light into any public area or tenanted space of the Building shall not be covered or obstructed by Tenant except in a manner approved by
Landlord. 

  

	 	B.	Toilets, showers and other like apparatus shall be used only for the purpose for which they were constructed. Any and all damage from misuse shall be borne by Tenant.
These rooms should be locked at all times. 

  

	 	C.	Except as otherwise permitted in the Lease, Landlord reserves the right to determine the number of letters allowed Lessee on any directory it maintains.

  

	 	D.	No sign, advertisement, notice or the like, shall be used in the Building by Tenant (other than at its office and then only as approved by Landlord in accordance with
building standards). If Tenant violates the foregoing, Landlord may remove the violation without liability and may charge all costs and expenses incurred in so doing to Tenant. 

 

	 	E.	Tenant shall not throw or permit to be thrown anything out of windows or doors or down passages or elsewhere in the Building, or bring or keep any pets therein, or
commit or make any indecent or improper acts or noises. In addition, Tenant shall not do or permit anything which will obstruct, injure, annoy or interfere with other tenants or those having business with them, or affect any insurance rate on the
Building or violate any provision of any insurance policy on the Building. 

  

	 	F.	Unless expressly permitted by the Landlord in writing: 

  

	 	(1)	No additional locks or similar devices shall be attached to any door or window and no keys other than those provided by the Landlord shall be made for any door;
provided however, that Tenant may install and manage its own compatible card reader entry system for entry to and within the Premises. If more than two keys for one lock are desired by the Tenant, the Landlord may provide the same upon
payment by the Tenant. Upon termination of this lease or of the Tenant’s possession, the Lessee shall surrender all keys to the Premises and shall explain to the Landlord all combination locks on safes, cabinets and vaults.

	 	(2)	In order to insure proper use and care of the Premises Tenant shall not install any shades, blinds, or awnings or any interior window treatment without consent of
Landlord. Blinds must be building standard. 

  

	 	(3)	All doors to the Premises are to be kept closed at all times except when in actual use for entrance to or exit from such Premises. The Tenant shall be responsible for
the locking of doors and the closing of any transoms and windows in and to the Premises. Any damage or loss resulting from violation of this rule shall be paid for by the Tenant. 

 

	 	(4)	The Tenant shall not install or operate any steam or internal combustion engine, boiler, machinery in or about the Premises, or carry on any mechanical business therein
except as currently utilized at the Premises or in accordance with the terms of the Lease. All equipment of any electrical or mechanical nature shall be placed in settings which absorb and prevent any vibration, noise or annoyance.

  

	 	G.	Landlord shall designate the time when and the method whereby freight, small office equipment, furniture, safes and other like articles may be brought into, moved or
removed from the Building or Premises, and to designate the location for temporary disposition of such items. 

  

	 	H.	In order to insure proper use and care of the Premises Tenant shall not allow anyone other than Landlord’s employees or contractors to clean the Premises without
Landlord’s permission, provided, however, that Landlord acknowledges and agrees that Tenant shall clean rooms used for Tenant’s work with animals at the Premises. 

 

	 	I.	The Premises shall not be defaced in any way. No changes in the HVAC, electrical fixtures or other appurtenances of said Premises shall be made except in accordance
with the Terms of this Lease. 

  

	 	J.	For the general welfare of all tenants and the security of the Building, Landlord may require all persons entering and/or leaving the Building on weekends and holidays
and between the hours of 6:00 p.m. and 8:00 a.m. to register with the Building attendant or custodian by signing his name and writing his destination in the Building, and the time of entry and actual or anticipated departure, or other procedures
deemed necessary by Landlord. Landlord may deny entry during such hours to any person who fails to provide satisfactory identification. 

  

	 	K.	No animals, birds, pets, and no bicycles or vehicles of any kind shall be brought into or kept in or about said Premises or the lobby or halls of the Building,
excepting those animals used for research purposes, by a disabled person, or otherwise within the scope of the Permitted Uses. Tenant shall not cause or permit any unusual or objectionable odors, noises or vibrations to be produced upon or emanate
from said Premises. 

	 	L.	Unless specifically authorized by Landlord, employees or agents of Landlord shall not perform for nor be asked by Tenant to perform work other than their regularly
assigned duties. 

  

	 	M.	Canvassing, soliciting and peddling in the Building are prohibited and Tenant shall cooperate to prevent the same from occurring. 

 

	 	N.	All parking, Building operation, or construction rules and regulations which may be established from time to time by Landlord on a uniform basis shall be obeyed.

  

	 	O.	Tenant shall not place a load on any floor of said Premises exceeding one hundred (100) pounds per square foot. Landlord reserves the right to prescribe the weight
and position of all safes and heavy equipment. 

  

	 	P.	Tenant shall not install or use any air conditioning or heating device or system other than in accordance with the terms of the Lease, unless previously approved by
Landlord. 

  

	 	Q.	Landlord shall have the right to make such other and further reasonable rules and regulations as in the judgment of Landlord, may from time to time be needful for the
safety, appearance, care and cleanliness of the Building and for the preservation of good order therein, provided that such other and further reasonable rules and regulations shall not interfere with the Permitted Uses. Landlord shall not be
responsible to Tenant for any violation of rules and regulations by other tenants, provided that the Landlord shall use diligent efforts to enforce the rules and regulations and shall do so in a uniform manner with respect to all tenants of the
Building. 

  

	 	R.	The Blanche Street private way and loading areas, parking areas, sidewalks, entrances, lobbies, halls, walkways, elevators, stairways and other common area provided by
Landlord shall not be obstructed by Tenant, or used for other purpose than for ingress and egress. 

  

	 	S.	In order to insure proper use and care of the Premises Tenant shall not install any call boxes or communications systems or wiring of any kind except in accordance with
the terms of the Lease. 

  

	 	T.	In order to insure proper use and care of the Premises Tenant shall not manufacture any commodity, or prepare or dispense for sales any foods or beverages, tobacco,
flowers, or other commodities or articles, except vending machines for the benefit of employees and invitees of Tenant, without the written consent of Landlord. 

 

	 	U.	In order to insure use and care of the Premises Tenant shall not enter any janitors’ closets, mechanical or electrical areas, telephone closets, loading areas,
roof or Building storage areas (except to the extent completely located within the Premises) without reasonable notice to Landlord. 

	 	V.	In order to insure proper use and care of the Premises Tenant shall not place door mats in public corridors without consent of Landlord. 

 EXHIBIT E 
 WORK LETTER 
 1. Landlord shall provide to Tenant an allowance (the
“Leasehold Improvements Allowance”) of $3,200,000.00, for application to the costs and expenses, more particularly set forth below, incurred by or on behalf of Tenant. If Tenant incurs costs in excess of the Leasehold Improvements
Allowance, then all such excess costs shall be born solely by Tenant. The Tenant must apply to Landlord for reimbursement from the Leasehold Improvements Allowance within one (1) year after the Expansion Premises Term Commencement Date. Any
portion of such Leasehold Improvements Allowance for which application for reimbursement has not been made within such one (1) year period shall be cancelled and no longer available. 

2, The application of the Leasehold Improvements Allowance by Landlord shall be limited to payment of the following costs and expenses
incurred by or on behalf of Tenant in connection with the Improvements: the actual documented and verified cost pursuant to Tenant’s design and construction contracts, including without limitation the associated contractor’s overhead and
profit and general conditions, incurred in the construction of the Improvements to the Premises, except for the making of improvements, installation of fixtures or incorporation of other items which are moveable rather than permanent improvements in
the nature of trade fixtures, examples of which may include furniture, telephone communications and security equipment, and bench-top laboratory equipment items such as microscopes. 

3. During the construction of any Improvements with respect to which Tenant desires to have the Leasehold Improvements Allowance applied,
and in accordance with the commercially reasonable terms and conditions typically imposed upon a landlord pursuant to a construction loan agreement, such as, without limitation, retainage, lien waiver, and other requisition conditions, Tenant shall,
on a monthly basis (as the Tenant’s contractor submits to Tenant its application for payment), deliver to Landlord a requisition for payment showing the costs of the leasehold improvements in question and the amount of the current payment
requested from Landlord for disbursement from the Leasehold Improvements Allowance within thirty (30) days after receipt of Tenant’s requisition; provided that any disbursement from the Leasehold Improvements Allowance shall hot occur
until the Third Floor Expansion Premises Term Commencement Date or Tenant does not exercise its right to terminate this Lease in writing due to the Third Floor Expansion Premises Term Commencement Date not having occurred on or before
December 1, 2010. Payments made on account of Tenant’s requisitions shall be made from the Leasehold Improvements Allowance. Following the completion of any such Improvements, Tenant shall deliver to the Landlord, within ninety
(90) days of completion, a statement showing the final costs of such Improvements, the amounts paid to date, or on behalf of the Tenant, and any amounts available for release of retainage. 

 EXHIBIT F  

TENANT CONSTRUCTION WORK AT UNIVERSITY PARK 
 The tenant construction work procedure at University Park is designed to provide efficient scheduling of work while protecting other tenants from unnecessary noise and inconvenience. The attached document
explains the procedure and has been prepared in keeping with the standard lease at University Park. It contains detailed information to assist you in planning construction projects. Please review it carefully before design begins. 

SUMMARY 
  

	1.	Contact the Property Manager as the first step. The Property Manager will be happy to assist you in completing your project efficiently. 

 

	2.	Incorporate the provisions of the attached document and the “Indoor Air Quality Guidelines for Tenant Improvement Work” into all of your agreements and
contracts. You will need written approval from Forest City Commercial Management before contracting any work. 

  

	3.	At least four weeks before construction provide four sets of drawings and plans to the Property Manager for approval. The Property Manager must also approve your list
of contractors and subcontractors. 

  

	4.	At least two weeks before construction submit to the Property Manager detailed schedules; addresses and telephone numbers of supervisors contractors and
subcontractors; copies of permits; proof of current insurance; Payment, Performance and Lien bonds: and notice of any contractor’s involvement in a labor dispute.  

 

	5.	We will generally require that you conduct noisy, disruptive or odor and dust producing work, as well as the delivery of construction materials, outside of regular
business hours. 

  

	6.	We expect all contractors to maintain safe and orderly conditions, labor harmony and proper handling of any hazardous materials. We may stop any work that does not meet
the conditions outlined in the attached document. 

  

	7.	Before occupying the completed space, submit the final certificate of occupancy and any other approvals to the Property Manager. We also require an air balancing report
signed by a professional engineer. A complete set of “as built” sepia drawings as well as electronic “as-built” drawings in AutoCAD Release 12, DXF format must be hand delivered to the Property Manager. 

Please note that this summary highlights key aspects of the attached document (entitled Rules and Regulations for Design and Construction of Tenant Work)
for your convenience and does not supersede it in any way. 

	1.	DEFINITIONS 

  

			
	 1.1      Buildings:
	  	 University Park a MIT:
  

38 Sidney, 45 Sidney, 75 Sidney, 64 Sidney, 88 Sidney, 26 Landsdowne, 35 Landsdowne, 40 Landsdowne, 65 Landsdowne and 350 Mass. Ave

		
	 1.2      Property Manager:
	  	Jay Kiely, or such other individual as Landlord may designate, from time to time.
		
	 1.3      Building Standards Book:
	  	Building Standards at University Park, as amended by Landlord, from time to time.
		
	 1.4      Consultants:
	  	Any architectural, engineering, or design consultant engaged by a Tenant in connection with Tenant Work.
		
	 1.5      Contractor:
	  	Any Contractor engaged by a Tenant of the Building for the performance of any Tenant Work, and any Subcontractor, employed by any such Contractor.
		
	 1.6      Plans:
	  	All architectural, electrical and mechanical construction drawings and specifications required for the proper construction of the Tenant Work.
		
	 1.7      Regular Business Hours:
	  	Monday through Friday, 7:30 A.M. through 5:30 P.M., excluding holidays.
		
	 1.8      Tenant:
	  	Any occupant of the Building.
		
	 1.9      Tenant Work:
	  	Any alternations, improvements, additions, repairs or installations in the Building performed by or on behalf of any Tenant.
		
	 1.10    Tradesperson:
	  	Any employee (including, without limitation, any mechanic, laborer, or Tradesperson) employed by a Contractor performing Tenant Work.

	2.0	GENERAL 

  

	 	2.1	All Tenant Work shall be performed in accordance with these rules and regulations and the applicable provisions of the Lease. 

 

	 	2.2	The provisions of these rules and regulations shall be incorporated in all agreements governing the performance of all Tenant Work, including, without limitation, any
agreements governing services to be rendered by each Contractor and Consultant. 

  

	 	2.3	Except as otherwise provided in these Rules and Regulations, all inquiries, submissions and approvals in connection with any Tenant Work shall be processed through the
Property Manager. 

  

	3.	PLANS 

  

			
	 3.1    Review and Approval:
	  	Any Tenant wishing to perform Tenant Work must first obtain the Landlord’s written approval of its plans for such Tenant Work. Landlord will allow the Tenant the right to
choose its own space planner (s) and architect for the design of the tenant work, provided, however, Tenant shall be required to retain under separate contract Landlord’s mechanical, electrical, plumbing and structural engineers (s) with
respect to such Tenant work to ensure operating consistency of the Premises with the building. Under no circumstances will any Tenant Work be permitted prior to such approval. Such approval shall be obtained prior to the execution of any agreement
with any Contractor for the performance of such Tenant Work.
		
	 3.2    Submission
	  	
		
	 Requirements:
	  	 a.      Any Tenant performing Tenant Work shall, at the earliest possible time but at least four
weeks before any Tenant Work is to begin, furnish to the Property Manager four full sets of plans and specifications describing such Tenant Work.

		
		  	 b.      All such Plans shall be drafted in accordance with the Construction Drawing Requirements
set out in the Building Standards Book.

		
		  	 c.      The design manifested in the Plans will be reviewed by the Landlord and shall comply
with his requirements so as to avoid aesthetic or other conflicts with the design and function of the Tenant’s premises and of the Building as a whole.

	4.	PRECONSTRUCTION NOTIFICATION AND APPROVALS 

  

	 	4.1	Approval to Commence Work 

  

	 	a.	Tenant shall submit to Property Manager, for the approval of Property Manager, the names of all prospective Contractors prior to issuing any bid packages to such
Contractors. 

  

	 	b.	No Tenant Work shall be undertaken by any Contractor or Tradesperson unless and until all the matters set forth in Article 4.2 below have been received for the Tenant
Work in question and unless Property Manager has approved the matters set forth in Article 4.2 below. 

  

	 	4.2	No Tenant Work shall be performed unless, at least two weeks before any Tenant Work is to begin, all of the following has been provided to the Property Manager and
approved. In the event that Tenant proposes to change any of the following, the Property Manager shall be immediately notified of such change and such change shall be subject to the approval of the Property Manager: 

 

	 	a.	Schedule for the work, indicating start and completion dates, any phasing and special working hours, and also a list of anticipated shutdowns of building systems.

  

	 	b.	List of all Contractors and Subcontractors, including addresses, telephone numbers, trades employed, and the union affiliation, if any, of each Contractor and
Subcontractor. 

  

	 	c.	Names and telephone numbers of the supervisors of the work. 

  

	 	d.	Copies of all necessary governmental permits, licenses and approvals. 

  

	 	e.	Proof of current insurance, to the limits set out in Exhibit A to these Rules and Regulations, naming Landlord as an additional insured party. 

 

	 	f.	Notice of the involvement of any Contractor in any ongoing or threatened labor dispute. 

 

	 	g.	Payment, Performance and Lien Bonds from sureties acceptable to Landlord, in form acceptable to Landlord, naming Landlord as an additional obligee.

  

	 	h.	Evidence that Tenant has made provision for either written waivers of lien from all Contractors and suppliers of material, or other appropriate protective measures
approved by Landlord. 

  

	 	4.3	Reporting Incidents 

 All
accidents, disturbances, labor disputes or threats thereof, and other noteworthy events pertaining to the Building or the Tenant’s property shall be reported immediately to the Property Manager. A written report must follow within 24 hours.

	5.	CONSTRUCTION SCHEDULE 

  

	 	5.1	Coordination 

  

	 	a.	All Tenant Work shall be carried out expeditiously and with minimum disturbance and disruption to the operation of the Building and without causing discomfort,
inconvenience, or annoyance to any of the other tenants or occupants of the Building or the public at large. 

  

	 	b.	All schedules for the performance of construction, including materials deliveries, must be coordinated through the Property Manager. The Property Manager shall have the
right, without incurring any liability to any Tenant, to stop activities and/or to require rescheduling of Tenant Work based upon adverse impact on the tenants or occupants of the Building or on the maintenance or operation of the Building.

  

	 	c.	If any tenant Work requires the shutdown of risers and mains for electrical, mechanical, sprinklers and plumbing work, such work shall be supervised by a representative
of Landlord. No Tenant Work will be performed in the Building’s mechanical or electrical equipment rooms without both Landlord’s prior approval and the supervision of a representative of Landlord, the cost of which shall be reimbursed by
the Tenants. 

  

	 	5.2	Time Restrictions 

  

	 	a.	Subject to Paragraph 5.1 of these rules and regulations, general construction work will generally be permitted at all times, including during Regular Business Hours.

  

	 	b.	Tenant shall provide the Property Manager with at least twenty-four (24) hours notice before proceeding with Special Work, as hereinafter defined, and such Special
Work will be permitted only at times agreed to by the Property Manager during periods outside of Regular Business Hours. “Special Work” shall be defined as the following operations: 

 

	 	(1)	All utility disruptions, shutoffs and turnovers; 

  

	 	(2)	Activities involving high levels of noise, including demolition, coring, drilling and ramsetting; 

 

	 	(3)	Activities resulting in excessive dust or odors, including demolition and spray painting. 

 

	 	c.	The delivery of construction materials to the Building, their distribution within the Building, and the removal of waste materials shall also be confined to periods
outside Regular Business Hours, unless otherwise specifically permitted in writing by the Property Manager. 

  

	 	d.	If coordination, labor disputes or other circumstances require, the Property Manager may change the hours during which regular construction work can be scheduled and/or
restrict or refuse entry to and exit from the Building by any Contractor. 

	6.	CONTRACTOR PERSONNEL 

  

	 	6.1	Work in Harmony 

  

	 	a.	All Contractors shall be responsible for employing skilled and competent personnel and suppliers who shall abide by the rules and regulations herein set forth as
amended from time to time by Landlord. 

  

	 	b.	No Tenant shall at any time, either directly or indirectly, employ, permit the employment, or continue the employment of any Contractor if such employment or continued
employment will or does interfere or cause any labor disharmony, coordination difficulty, delay or conflict with any other contractors engaged in construction work in or about the Building or the complex in which the Building is located.

  

	 	c.	Should a work stoppage or other action occur anywhere in or about the Building as a result of the presence, anywhere in the Building, of a Contractor engaged directly
or indirectly by a Tenant, or should such Contractor be deemed by Landlord to have violated any applicable rules or regulations, then upon twelve hours written notice, Landlord may, without incurring any liability to Tenant or said Contractor,
require any such Contractor to vacate the premises demised by such Tenant and the Building, and to cease all further construction work therein. 

  

	 	6.2	Conduct 

  

	 	a.	While in or about the Building, all Tradespersons shall perform in a dignified, quiet, courteous, and professional manner at all times. Tradespersons shall wear
clothing suitable for their work and shall remain fully attired at all times. All Contractors will be responsible for their Tradespersons’ proper behavior and conduct. 

 

	 	b.	The Property Manager reserves the right to remove anyone who, or any Contractor which; is causing a disturbance to any tenant or occupant of the Building or any other
person using or servicing the Building; is interfering with the work of others; or is in any other way displaying conduct or performance not compatible with the Landlord’s standards. 

 

	 	6.3	Access 

  

	 	a.	All Contractors and Tradespersons shall contact the Property Manager prior to commencing work, to confirm work location and Building access, including elevator usage
and times of operation. Access to the Building before and after Regular Business Hours or any other hours designated from time to time by the Building Manger and all day on weekends and holidays will only be provided when twenty-four (24) hours
advanced notice is given to the Property Manager. 

  

	 	b.	No Contractor or Tradesperson will be permitted to enter any private or public space in the Building, other than the common areas of the Building necessary to give
direct access to the premises of Tenant for which he has been employed, without the prior approval of the Property Manager. 

  

	 	c.	 All Contractors and Tradespersons must obtain permission from the Property Manager prior to undertaking work in any space outside of the Tenant’s
premises. This requirement 

	 	
specifically includes ceiling spaces below the premises where any work required must be undertaken at the convenience of the affected Tenant and outside of Regular Business Hours. Contractors
undertaking such work shall ensure that all work, including work required to reinstate removed items and cleaning, be completed prior to opening of the next business day. 

 

	 	d.	Contractors shall ensure that all furniture, equipment and accessories in areas potentially affected by any Tenant Work shall be adequately protected by means of drop
cloths or other appropriate measures. In addition, all Contractors shall be responsible for maintain security to the extent required by the Property Manager. 

 

	 	e.	Temporary access doors for tenant construction areas connecting with a public corridor will be building standards, i.e., door, frame, hardware and lockset. A copy of
the key will be furnished to the Property Manager. 

  

	 	6.4	Safety 

  

	 	a.	All Contractors shall police ongoing construction operations and activities at all times, keeping the premises orderly, maintaining cleanliness in and about the
premises, and ensuring safety and protection of all areas, including truck docks, elevators, lobbies and all other public areas which are used for access to the premises. 

 

	 	b.	All Contractors shall appoint a supervisor who shall be responsible for all safety measures, as well as for compliance with all applicable governmental laws,
ordinances, rules and regulations such as, for example, “OSHA” and “Right-to-Know” legislation. 

  

	 	c.	Any damage caused by Tradespersons or other Contractor employees shall be the responsibility of the Tenant employing the Contractor. Costs for repairing such damage
shall be charge directly to such Tenant. 

  

	 	6.5	Parking 

  

	 	a.	Parking is not allowed in or near truck docks, in handicapped or fire access lanes, or any private ways in or surrounding the property, vehicles so parked will be towed
at the expense of the Tenant who has engaged the Contractor for whom the owner of such vehicle is employed. 

  

	 	b.	The availability of parking in any parking areas of the Building is limited. Use of such parking for Contractors and their personnel is restricted and must be arranged
with and approved by the Property Manager. 

  

	7.	BUILDING MATERIALS 

  

	 	7.1	Delivery 

 All deliveries
of construction materials shall be made at the predetermined times approved by the Property Manager and shall be effected safely and expeditiously only at the location determined by the Property Manager. 

	 	7.2	Transportation in Building 

  

	 	a.	Distribution of materials from delivery point to the work area in the Building shall be accomplished with the least disruption to the operation of the Building
possible. Elevators will be assigned for material delivery and will be controlled by the Building management. 

  

	 	b.	Contractors shall provide adequate protection to all carpets, wall surfaces, doors and trim in all public areas through which materials are transported. Contractors
shall continuously clean all such areas. Protective measures shall include runners over carpet, padding in elevators and any other measures determined by the Property Manager. 

 

	 	c.	Any damage caused to the Building through the movement of construction materials or otherwise shall be the responsibility of Tenant who has engaged the Contractor
involved. Charges for such damage will be submitted by the Landlord directly to the Tenant. 

  

	 	7.3	Storage and Placement 

  

	 	a.	All construction materials shall be stored only in the premises where they are to be installed. No storage of materials will be permitted in any public areas, loading
docks or corridors leading to the premises. 

  

	 	b.	No flammable, toxic, or otherwise hazardous materials may be brought in or about the Building unless: (i) authorized by the Property Manager, (ii) all
applicable laws, ordinances, rules and regulations are complied with, and (iii) all necessary permits have been obtained. All necessary precautions shall be taken by the Contractor handling such materials against damage or injury caused by such
materials. 

  

	 	c.	All materials required for the construction of the premises must comply with Building standards, must conform with the plans and specifications approved by Landlord,
and must be installed in the locations shown on the drawings approved by the Landlord. 

  

	 	d.	All work shall be subject to reasonable supervision and inspection by Landlord’s Representative. 

 

	 	e.	No alternations to approved plans will be made without prior knowledge and approval of the Property Manager. Such changes shall be documented on the as-built drawings
required to be delivered to Landlord pursuant to Paragraph 10 of the rules and regulations. 

  

	 	f.	All protective devices (e.g., temporary enclosures and partitions) and materials, as well as their placement, must be approved by the Property Manager.

  

	 	g.	It is the responsibility of Contractors to ensure that the temporary placement of materials does not impose a hazard to the Building or its occupants, either through
overloading, or interference with Building systems, access, egress or in any other manner whatsoever. 

  

	 	h.	All existing and/or new openings made through the floor slab for piping, cabling, etc. must be packed solid with fiberglass insulation to make openings smoke tight. All
holes in the floor slab at abandoned floor outlets, etc. will be filled with solid concrete. 

	 	7.4	Salvage and Waste Removal 

  

	 	a.	All rubbish, waste and debris shall be neatly and cleanly removed from the Building by Contractors daily unless otherwise approved by the Property Manager. The
Building’s trash compactor shall not be used for construction or other debris. For any demolition and debris, each Contractor must make arrangements with the Property Manager for the scheduling and location of an additional dumpster to be
supplied at the cost of the Tenant engaging such Contractor. Where, in the opinion of the Property Manager, such arrangements are not practical, such Contractors will make alternative arrangements for removal at the cost of the Tenant engaging such
Contractors. 

  

	 	b.	Toxic or flammable waste is to be properly removed daily and disposed of in full accordance with all applicable laws, ordinances, rules and regulations.

  

	 	c.	Contractors shall, prior to removing any item (including, without limitation, building standard doors, frames and hardware, light fixtures, ceiling diffusers, ceiling
exhaust fans, sprinkler heads, fire horns, ceiling speakers and smoke detectors) from the Building, notify the Property Manager that it intends to remove such item. At the election of Property Manager, Contractors shall deliver any such items to the
Property Manager. Such items will be delivered, without cost, to an area designated by the Property Manager which area shall be within the Building or the complex in which the Building is located. 

	8.	PAYMENT OF CONTRACTORS 

Tenant shall promptly pay the cost of all Tenant Work so that Tenant’s premises and the Building shall be free of liens for labor or
materials. If any mechanic’s lien is filed against the Building or any part thereof which is claimed to be attributable to the Tenant, its agents, employees or contractors, Tenant shall give immediate notice of such lien to the Landlord and
shall promptly discharge the same by payment or filing any necessary bond within 10 days after Tenant has first notice of such mechanic’s lien. 
  

	9.	CONTRACTORS INSURANCE 

Prior to commencing any Tenant Work, and throughout the performance of the Tenant Work, each Contractor shall obtain and maintain
insurance in accordance with Exhibit A attached hereto. Each Contractor shall, prior to making entry into the Building provide Landlord with certificates that such insurance is in full force and effect. 

 

	10.	SUBMISSIONS UPON COMPLETION 

  

	 	a.	Upon completion of any Tenant Work, Tenant shall submit to Landlord a permanent certificate of occupancy and final approval of any other governmental agencies having
jurisdiction. 

  

	 	b.	A properly executed air balancing report, signed by a professional engineer, shall be submitted to Landlord upon completion of all mechanical work. Such report shall be
subject to Landlord’s approval. 

  

	 	c.	Tenant shall submit to Landlord’s Representative a final “as-built” set of sepia drawings as well as electronic “as-built” drawings in AutoCAD
Release 12, DXF format. 

  

	11.	ADJUSTMENT OF REGULATIONS 

These Rules and Regulations may be amended from time to time in accordance with the reasonable judgment of Landlord. 

 

	12.	CONFLICT BETWEEN RULES AND REGULATIONS AND LEASE 

 In the event of any conflict between the Lease and these rules and regulations, the terms of the Lease shall control. 

 EXHIBIT A 
 TO 
 CONSTRUCTION RULES AND REGULATIONS 

INSURANCE REQUIREMENTS FOR CONTRACTORS 
 When Tenant Work is to be done by Contractors in the Building, the Tenant authorizing such work shall be responsible for including in the contract for such work the following insurance and indemnity
requirements to the extent that they are applicable. Insurance certificates must be received prior to construction. Landlord shall be named as an additional insured party on all certificates. 
 INSURANCE 
 Each Contractor and each Subcontractor shall, until the completion of the Tenant
Work in question, procure and maintain at its expense, the following insurance coverages with companies acceptable to Landlord in the following minimum limits: 
 Workers’ Compensation 
  

			
	(including coverage for Occupational Disease)
		
		  	Limit of Liability
		
	Workers’ Compensation	  	Statutory Benefits
		
	Employer’s Liability	  	$500,000
		
	Comprehensive General Liability	  	

 (including Broad Form Comprehensive Liability Enhancement, Contractual Liability assumed by the
Contractor and the Tenant under Article 15.3 of the Lease and Completed Operations coverage) 
  

			
		  	Limit of Liability
		
	Bodily Injury & Property Damage	  	$5,000,000 combined single limit
		
	Comprehensive Automobile Liability	  	
	
	(including coverage for Hired and Non-owned Automobiles)
		
		  	Limit of Liability
		
		  	
		
	Bodily Injury & Property Damage	  	$1,000,000 per occurrence

 SUPPLEMENT TO RULES AND REGULATIONS FOR 

DESIGN CONSTRUCTION OF TENANT WORK 
 FACT SHEET FOR UNIVERSITY PARK 
  
  

			
	 1.      PROPERTY MANAGER’S OFFICE
	  	
		
	 CONTACT(S):
	  	 Jay Kiely, Property Manager

Robyn Arruda, Asst. Property Manager
 Eddie
Arruda, Chief Engineer

		
	 LOCATION:
	  	 Forest City Management
 38
Sidney Street
 Cambridge, MA 02139

		
	 TELEPHONE NUMBER:
	  	(617) 494-9330
		
	 2.      PERSONNEL, MATERIAL AND EQUIPMENT ACCESS
	  	
		
	 LOCATION OF LOADING BOCK:
	  	
		
	 NORMAL HOURS OF ACCESS:
	  	7:30 A.M. TO 5:30 P.M.
		
	 ENTRANCES NOT AVAILABLE:
	  	All building lobbies.
		
	 3.      USE OF ELEVATORS
	  	
		
	 LOCATION OF ELEVATORS:
	  	 Specific locations of service elevators will
 be pointed out by the building staff.

		
	 NORMAL HOURS OF OPERATION:
	  	7:30 A.M. to 5:30 P.M.
		
	 OVERTIME OPERATION CHARGES:
	  	$40.00 per hour
		
	 ELEVATORS NOT AVAILABLE:
	  	All passenger elevators.

  

	4.	SPECIAL CONDITIONS AND PRECAUTIONS 

 As University Park consists of multi-use buildings incorporating offices, retail and hotel suites, special care must be taken to control noise at all times. 

All window blinds are to be removed prior to construction and replaced without damage immediately after completion of construction by the
tenant and/or his contractor. 

 EXHIBIT G 
 FORM OF LETTER OF CREDIT 
 IRREVOCABLE STANDBY LETTER OF CREDIT
NO.                     

DATE:                     ,
200                     
 BENEFICIARY:

  

					
			
	
                    
                                         

	 		  	
			
	
                    
                                         

	 		  	
			
	
                    
                                         

	 		  	

 APPLICANT: 
  

					
			
	
                    
                                         

	 		  	
			
	
                    
                                         

	 		  	
			
	
                    
                                         

	 		  	

 AMOUNT:
US$                     ($                    and
00/100 U.S. DOLLARS) 
 EXPIRATION
DATE:                    ,200             

LOCATION: AT OUR COUNTERS IN SKOKIE, ILLINOIS 

DEAR SIR/MADAM: 
 WE HEREBY
ESTABLISH OUR IRREVOCABLE STANDBY LETTER OF CREDIT NO                    . IN YOUR FAVOR AVAILABLE BY YOUR DRAFT IN THE FORM OF “ANNEX 1”
ATTACHED DRAWN ON US AT SIGHT AND ACCOMPANIED BY THE FOLLOWING DOCUMENTS: 

 A DATED STATEMENT PURPORTEDLY SIGNED BY AN AUTHORIZED OFFICER OF THE BENEFICIARY ON
BENEFICIARY’S LETTERHEAD READING AS FOLLOWS: 
 (A) THE AMOUNT REPRESENTS FUNDS DUE AND OWING TO US PURSUANT TO THE TERMS OF
THAT CERTAIN LEASE BY AND BETWEEN            , AS LANDLORD, AND                     , AS
TENANT OR 
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	Authorized Signature	  		  		  		  	

  

 EXHIBIT “A” 
 DATE: 
  

											
	 TO:
	  	  
	  		  	RE:	 	STANDBY LETTER OF CREDIT
		  	  
	  		  		 	        NO.	 	                             
                             
		  		  		  		 	        ISSUED BY	 	                             
                             

 LADIES AND GENTLEMEN: 
 FOR VALUE RECEIVED, THE UNDERSIGNED BENEFICIARY HEREBY IRREVOCABLY TRANSFERS TO: 
  

					
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	SINCERELY,	  		  	SIGNATURE AUTHENTICATED
			
	  

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 SIGNATURE OF
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 (authorized
signature)EX-10.13

 Exhibit 10.13 
 EXECUTION COPY 
 Confidential Materials omitted and filed separately with the

 Securities and Exchange Commission. Double asterisks denote omissions. 

DISCOVERY AND DEVELOPMENT COLLABORATION 
 AND LICENSE AGREEMENT 
 by and between 

AGIOS PHARMACEUTICALS, INC. 
 and 
 CELGENE CORPORATION 

 TABLE OF CONTENTS 

 

							
	 	 	 	  	PAGE	 
	 ARTICLE I DEFINITIONS
	  	 	1	  
		
	 ARTICLE II GOVERNANCE
	  	 	23	  
			
	 Section 2.1
	 	General	  	 	23	  
			
	 Section 2.2
	 	Joint Steering Committee	  	 	23	  
			
	 Section 2.3
	 	Joint Research Committee	  	 	23	  
			
	 Section 2.4
	 	Joint Development Committee	  	 	25	  
			
	 Section 2.5
	 	Joint Commercialization Committee	  	 	26	  
			
	 Section 2.6
	 	Alliance Managers	  	 	27	  
			
	 Section 2.7
	 	General Committee Membership and Procedures	  	 	27	  
			
	 Section 2.8
	 	Decision-Making	  	 	28	  
			
	 Section 2.9
	 	Dispute Resolution for Certain Decisions by Mutual Consent	  	 	30	  
			
	 Section 2.10
	 	Scope of Governance	  	 	31	  
			
	 Section 2.11
	 	Agios Right to Discontinue Participation	  	 	31	  
		
	 ARTICLE III DISCOVERY AND DEVELOPMENT COLLABORATION
	  	 	31	  
			
	 Section 3.1
	 	Primary Goals and General Responsibilities of Discovery Program	  	 	31	  
			
	 Section 3.2
	 	Option	  	 	32	  
			
	 Section 3.3
	 	Option Term	  	 	32	  
			
	 Section 3.4
	 	Discovery Plan	  	 	36	  
			
	 Section 3.5
	 	Determination of Collaboration Targets During Option Term	  	 	36	  
			
	 Section 3.6
	 	Discovery and Nomination of Compounds for Licensed Program	  	 	38	  
			
	 Section 3.7
	 	Selection of Validated Programs Upon Expiration of Option Term	  	 	48	  
			
	 Section 3.8
	 	Primary Goals and General Responsibilities of Licensed Program	  	 	50	  
			
	 Section 3.9
	 	Development Plans	  	 	52	  

  
 - i -

							
	 Section 3.10
	 	Split Programs; Agios Deferral Right; Development Activities; Agios Opt-Out	  	 	52	  
			
	 Section 3.11
	 	Independent Programs; Buy-In Right at IND Acceptance	  	 	57	  
			
	 Section 3.12
	 	Agios Reverted Programs	  	 	59	  
			
	 Section 3.13
	 	Initial Target Indication in Oncology Field	  	 	60	  
			
	 Section 3.14
	 	Companion Diagnostics	  	 	60	  
			
	 Section 3.15
	 	Records; Tech Transfer	  	 	61	  
			
	 Section 3.16
	 	Third Parties	  	 	62	  
		
	 ARTICLE IV MANUFACTURE AND SUPPLY
	  	 	63	  
			
	 Section 4.1
	 	Pre-Clinical, Clinical and Commercial Supply	  	 	63	  
			
	 Section 4.2
	 	Transfer of Manufacturing Responsibility	  	 	65	  
			
	 Section 4.3
	 	Manufacturing Efforts	  	 	65	  
			
	 Section 4.4
	 	Agios Reverted Compounds	  	 	65	  
		
	 ARTICLE V REGULATORY MATTERS
	  	 	66	  
			
	 Section 5.1
	 	Lead Responsibility for Regulatory Interactions	  	 	66	  
			
	 Section 5.2
	 	Participation Rights	  	 	67	  
			
	 Section 5.3
	 	Global Safety Database; Pharmacovigilance Agreement	  	 	68	  
		
	 ARTICLE VI COMMERCIALIZATION
	  	 	69	  
			
	 Section 6.1
	 	Commercialization Responsibilities for Licensed Products	  	 	69	  
			
	 Section 6.2
	 	Commercialization Plan	  	 	70	  
			
	 Section 6.3
	 	Co-Commercialization Activities	  	 	71	  
			
	 Section 6.4
	 	Trademarks	  	 	73	  
		
	 ARTICLE VII DILIGENCE
	  	 	73	  
			
	 Section 7.1
	 	Collaboration Activities	  	 	73	  
			
	 Section 7.2
	 	Diligence Obligations	  	 	74	  
			
	 Section 7.3
	 	Celgene’s Picks	  	 	74	  

  
 - ii -

							
	 ARTICLE VIII GRANT OF RIGHTS; EXCLUSIVITY
	  	 	75	  
			
	 Section 8.1
	 	Research Licenses	  	 	75	  
			
	 Section 8.2
	 	Development and Commercialization Licenses	  	 	75	  
			
	 Section 8.3
	 	Collaboration Compounds	  	 	79	  
			
	 Section 8.4
	 	Sublicense Rights	  	 	80	  
			
	 Section 8.5
	 	Sublicense Requirements	  	 	82	  
			
	 Section 8.6
	 	Affiliates and Third Party Contractors	  	 	83	  
			
	 Section 8.7
	 	Existing Third Party Agreements	  	 	83	  
			
	 Section 8.8
	 	Exclusivity	  	 	86	  
			
	 Section 8.9
	 	Targets	  	 	87	  
			
	 Section 8.10
	 	Retained Rights	  	 	88	  
			
	 Section 8.11
	 	Section 365(n) of the Bankruptcy Code	  	 	88	  
		
	 ARTICLE IX FINANCIAL PROVISIONS
	  	 	89	  
			
	 Section 9.1
	 	Initial Payment	  	 	89	  
			
	 Section 9.2
	 	Equity Investment	  	 	89	  
			
	 Section 9.3
	 	Option Exercise Payments	  	 	89	  
			
	 Section 9.4
	 	Development Costs	  	 	90	  
			
	 Section 9.5
	 	Manufacturing Costs; Commercialization Costs	  	 	91	  
			
	 Section 9.6
	 	Milestone Payments	  	 	92	  
			
	 Section 9.7
	 	Royalty Payments	  	 	94	  
			
	 Section 9.8
	 	Royalty Reports; Payments	  	 	98	  
			
	 Section 9.9
	 	Financial Records	  	 	98	  
			
	 Section 9.10
	 	Audits	  	 	98	  
			
	 Section 9.11
	 	Tax Matters	  	 	100	  
			
	 Section 9.12
	 	Currency Exchange	  	 	101	  
			
	 Section 9.13
	 	Late Payments	  	 	101	  

  
 - iii -

							
	 ARTICLE X INTELLECTUAL PROPERTY OWNERSHIP, PROTECTION AND RELATED MATTERS
	  	 	101	  
			
	 Section 10.1
	 	Ownership of Inventions	  	 	101	  
			
	 Section 10.2
	 	Prosecution of Patent Rights	  	 	102	  
			
	 Section 10.3
	 	Third Party Infringement	  	 	106	  
			
	 Section 10.4
	 	Claimed Infringement; Claimed Invalidity	  	 	109	  
			
	 Section 10.5
	 	Patent Term Extensions	  	 	110	  
			
	 Section 10.6
	 	Patent Marking	  	 	110	  
			
	 Section 10.7
	 	CREATE Act Application	  	 	110	  
			
	 Section 10.8
	 	Challenges to Patent Rights	  	 	111	  
		
	 ARTICLE XI CONFIDENTIALITY
	  	 	112	  
			
	 Section 11.1
	 	Confidential Information	  	 	112	  
			
	 Section 11.2
	 	Permitted Disclosure	  	 	112	  
			
	 Section 11.3
	 	Publicity; Terms of this Agreement; Non-Use of Names	  	 	113	  
			
	 Section 11.4
	 	Publications	  	 	115	  
			
	 Section 11.5
	 	Term	  	 	116	  
			
	 Section 11.6
	 	Return of Confidential Information	  	 	116	  
		
	 ARTICLE XII REPRESENTATIONS AND WARRANTIES
	  	 	117	  
			
	 Section 12.1
	 	Mutual Representations	  	 	117	  
			
	 Section 12.2
	 	Additional Agios Representations	  	 	118	  
			
	 Section 12.3
	 	Additional Celgene Representations	  	 	119	  
			
	 Section 12.4
	 	Employee Obligations	  	 	119	  
			
	 Section 12.5
	 	No Warranties	  	 	120	  

  
 - iv -

							
	 ARTICLE XIII INDEMNIFICATION
	  	 	120	  
			
	 Section 13.1
	 	By Celgene	  	 	120	  
			
	 Section 13.2
	 	By Agios	  	 	121	  
			
	 Section 13.3
	 	Of [**]	  	 	121	  
			
	 Section 13.4
	 	Joint Defendants	  	 	122	  
			
	 Section 13.5
	 	Limitation of Liability	  	 	122	  
			
	 Section 13.6
	 	Insurance	  	 	122	  
		
	 ARTICLE XIV TERM AND TERMINATION
	  	 	123	  
			
	 Section 14.1
	 	Term	  	 	123	  
			
	 Section 14.2
	 	Termination	  	 	123	  
			
	 Section 14.3
	 	Effects Of Termination	  	 	124	  
		
	 ARTICLE XV MISCELLANEOUS
	  	 	129	  
			
	 Section 15.1
	 	Dispute Resolution	  	 	129	  
			
	 Section 15.2
	 	Submission to Court for Resolution	  	 	129	  
			
	 Section 15.3
	 	Governing Law	  	 	130	  
			
	 Section 15.4
	 	Assignment	  	 	130	  
			
	 Section 15.5
	 	Certain Matters Relating to Change of Control	  	 	131	  
			
	 Section 15.6
	 	Force Majeure	  	 	135	  
			
	 Section 15.7
	 	Notices	  	 	135	  
			
	 Section 15.8
	 	Waiver	  	 	135	  
			
	 Section 15.9
	 	Severability	  	 	136	  
			
	 Section 15.10
	 	Entire Agreement	  	 	136	  
			
	 Section 15.11
	 	Modification	  	 	136	  
			
	 Section 15.12
	 	Independent Contractors; No Intended Third Party Beneficiaries	  	 	136	  
			
	 Section 15.13
	 	Interpretation; Construction	  	 	136	  
			
	 Section 15.14
	 	Performance by Affiliates	  	 	137	  
			
	 Section 15.15
	 	Counterparts	  	 	137	  

  
 - v -

 Exhibits and Schedules 
  

					
	 Exhibit A
	  	—  	  	Certain Financial Definitions
	 Schedule 1.1
	  	—  	  	Baseline Activity
	 Schedule 1.6
	  	—  	  	Agios Patent Rights as of the Effective Date
	 Schedule 1.53
	  	—  	  	Existing Third Party Agreements
	 Schedule 1.65
	  	—  	  	IND Study Criteria
	 Schedule 1.91
	  	—  	  	Phase I MAD Protocol Criteria
	 Schedule 1.93
	  	—  	  	Phase I Report Criteria
	 Schedule 1.105
	  	—  	  	Publication Guidelines
	 Schedule 1.119
	  	—  	  	Target List
	 Schedule 1.128
	  	—  	  	Validation Criteria
	 Schedule 3.5(a)
	  	—  	  	Target Inclusion Criteria
	 Schedule 3.5(b)
	  	—  	  	Certain Rationale for Target/Program Exclusion
	 Schedule 3.6(b)
	  	—  	  	Clinical Candidate Guidelines
	 Schedule 10.2(f)
	  	—  	  	Countries for Filing Agios Collaboration Patent Rights
	 Schedule 11.3
	  	—  	  	Press Release

  
 - vi -

 DISCOVERY AND DEVELOPMENT COLLABORATION AND LICENSE AGREEMENT 

This Discovery and Development Collaboration and License Agreement (this “Agreement”) is entered into as of
April 14, 2010 (the “Effective Date”), by and between Agios Pharmaceuticals, Inc., a corporation organized and existing under the laws of the State of Delaware and having its principal office at 38 Sidney St., 2nd Floor,
Cambridge, MA 02139-4169 (“Agios”), and Celgene Corporation, a corporation organized and existing under the laws of the State of Delaware and having its principal office at 86 Morris Avenue, Summit, NJ 07901
(“Celgene”). 
 INTRODUCTION 

 

	1.	Agios has expertise and technology relating to the discovery and development of drug candidates that modulate the metabolic functioning of cancer cells.

  

	2.	Celgene is engaged in the discovery, development and commercialization of therapeutics in the fields of oncology and immunological diseases. 

 

	3.	Celgene and Agios desire to establish a collaboration to apply Agios’ expertise and technology to the discovery and validation of novel targets, primarily cancer
metabolism targets, and the discovery and development of associated therapeutics, primarily in the Oncology Field, and to provide for the development and commercialization of such therapeutics, all on the terms and conditions set forth in this
Agreement. 

 NOW, THEREFORE, in consideration of the respective representations, warranties, covenants and
agreements contained herein, and for other valuable consideration, the receipt and adequacy of which are hereby acknowledged, Agios and Celgene hereby agree as follows: 
 Article I 
 Definitions 

When used in this Agreement, each of the following terms shall have the meanings set forth in this Article I: 

Section 1.1 “Active” or “Activity” means, with respect to a given compound in relation to a given
Collaboration Target, that such compound meets the baseline criteria for activity in modulating such Collaboration Target, the mechanism of action of which is a specific interaction with such Collaboration Target. The general baseline criteria for
activity in modulating Collaboration Targets are set forth on Schedule 1.1. The JRC by Mutual Consent may establish more specific baseline criteria for activity in modulating a particular Collaboration Target based on such general baseline
criteria. 
 Section 1.2 “Affiliate” means, as to any Person, any other Person that, directly or
indirectly through one or more intermediaries, controls, is controlled by or is under common control with such Person, as the case may be, for so long as such control exists. As used in this Section 1.2, “control” means:
(a) to possess, directly or indirectly, the power to direct the management and policies of a Person, whether through ownership of voting securities or by contract relating to voting rights or corporate governance; or (b) direct or indirect
beneficial ownership of at least fifty percent (50%) (or such lesser percentage that is the maximum allowed to be owned by a foreign Person in a particular jurisdiction) of the voting share capital in a Person. 

  
 - 1 -

 Section 1.3 “Agios Collaboration Intellectual Property,”
“Agios Collaboration Know-How” and “Agios Collaboration Patent Rights” means, respectively, the Collaboration Intellectual Property Controlled by Agios, the Collaboration Know-How Controlled by Agios and the
Collaboration Patent Rights Controlled by Agios. 
 Section 1.4 “Agios Intellectual Property” means Agios
Know-How and Agios Patent Rights, collectively. 
 Section 1.5 “Agios Know-How” means any Know-How that is
(a) Controlled by Agios as of the Effective Date or during the Term, and (b) necessary or useful for the Development, Manufacture and/or Commercialization of Collaboration Targets, Celgene Reverted Targets, Collaboration Compounds,
Independent Compounds, Celgene Reverted Compounds, Celgene Reverted Products, Licensed Compounds and/or Licensed Products; but excluding (i) Collaboration Know-How, and (ii) Know-How to the extent specifically related to any Target
other than a Collaboration Target or Celgene Reverted Target. 
 Section 1.6 “Agios Patent Rights” means
any Patent Rights that (a) are Controlled by Agios as of the Effective Date or during the Term, and (b) Cover, or are otherwise necessary or useful for Development, Manufacture and/or Commercialization of, a Collaboration Target, Celgene
Reverted Target, Collaboration Compound, Independent Compound, Celgene Reverted Compound, Celgene Reverted Product, Licensed Compound or Licensed Product (including the composition of matter, manufacture or any use thereof); but excluding
(i) Collaboration Patent Rights, and (ii) Patent Rights to the extent specifically related to a Target other than a Collaboration Target or Celgene Reverted Target. Agios Patent Rights as of the Effective Date are as set forth on
Schedule 1.6. 
 Section 1.7 “Agios Reverted Compound(s)” means: 

(a) the Picked Compounds with respect to each Picked Validated Program selected by Agios pursuant to Section 3.7 (or, as applicable,
Section 3.3(b)(iii) or Section 15.5); 
 (b) each Development Candidate with respect to each Optionable Program for
which Celgene either rejects the Development Candidate or Celgene does not exercise the Celgene Program Option; provided that, for this purpose and notwithstanding Section 1.47, “Development Candidate” means (i) the one
(1) Collaboration Compound that meets the Clinical Candidate Guidelines nominated by Agios, (2) the Back-Up Compound identified by Agios pursuant to Section 3.6(b)(ii), and (3) up to [**] additional Back-Up Compounds identified
by the JRC (or the JDC, as applicable) by Mutual Consent at the DC Selection Stage; 
 (c) notwithstanding Section 1.66,
(i) a single Independent Compound under each Independent Program that becomes an Agios Reverted Program that is Developed prior to such Independent Program becoming an Agios Reverted Program, and (ii) [**] Back-Up Compounds identified by
the JRC (or the JDC, as applicable) by Mutual Consent at the time of such Independent Program becoming an Agios Reverted Program; and 

  
 - 2 -

 (d) with respect to any other Program that becomes an Agios Reverted Program in accordance
with Section 3.12, (i) one (1) Collaboration Compound that is Active against the Agios Reverted Target and Developed under the applicable Program (but only to the extent Developed prior to such Program becoming an Agios Reverted
Program), and (ii) [**] Back-Up Compounds identified by the JRC (or the JDC, as applicable) by Mutual Consent at the time of such Program becoming an Agios Reverted Program. 

Section 1.8 “Agios Reverted Product” means a product that contains as an active ingredient any Agios Reverted
Compound. 
 Section 1.9 “Agios Reverted Target” means, with respect to each Discovery Program or
Independent Program that becomes an Agios Reverted Program in accordance with Section 3.12, the Target which was the subject of such Discovery Program or Independent Program, as applicable. 

Section 1.10 “Agreement Compounds” means Collaboration Compounds, Residual Program Compounds, Development
Candidates, Picked Compounds, Picked Products, Back-Up Compounds, Buy-In Compounds, Buy-In Products, Split Compounds, Split Products, Co-Commercialized Products, Licensed Compounds, Licensed Products, Independent Compounds, Agios Reverted Compounds,
Agios Reverted Products, Celgene Reverted Compounds and/or Celgene Reverted Products. 
 Section 1.11
“Analog” means, with respect to a specific Development Candidate, Back-Up Compound, Buy-In Compound, Picked Compound or Celgene Reverted Compound against a specific Target, a molecule (a) that contains the same core structure
(meaning [**]) as such specific Development Candidate, Back-Up Compound, Buy-In Compound, Picked Compound, or Celgene Reverted Compound or that contains [**] within the core structure of any of the foregoing; (b) that modulates the Target to
which such Development Candidate, Back-Up Compound, Buy-In Compound, Picked Compound, or Celgene Reverted Compound is directed; and (c) that has a level of potency against such Target, expressed as [**], as applicable, for the Development
Candidate as defined in Section 1.47(a), the Buy-In Compound as defined in Section 1.14(a)(i), the most advanced Picked Compound as defined in Section 1.98(a)(i), or the most advanced Celgene Reverted Compound as defined in
Section 1.23(a), respectively, for such Target, as measured in an [**] assay for such Target designated by the JDC. 

Section 1.12 “Back-Up Compound” means, with respect to each Program, Agios Reverted Program or Celgene Reverted
Program, as applicable, a Collaboration Compound (a) that meets, [**], the Clinical Candidate Guidelines under such Program, Agios Reverted Program or Celgene Reverted Program, as applicable, and (b) that is directed to the same
Collaboration Target, Agios Reverted Target or Celgene Reverted Target, as applicable, as the lead Collaboration Compound in such Program, Agios Reverted Program or Celgene Reverted Program. 

Section 1.13 “Business Day” means a day other than a Saturday or Sunday or federal holiday in Cambridge,
Massachusetts or Summit, New Jersey. 

  
 - 3 -

 Section 1.14 “Buy-In Compound” means 

(a) with respect to each Independent Program that becomes a Buy-In Program for which Celgene is the Commercializing Party, (i) the
Collaboration Compound with respect to which the IND Acceptance is achieved, (ii) Back-Up Compounds identified by the JRC (or the JDC, as applicable) by Mutual Consent at the time of the Buy-In Party’s exercise of its Buy-In Right,
(iii) any Analogs, Derivatives, [**] of any chemical entity identified in (i) or (ii), and (iv) any compound that contains [**] of any of the foregoing in (i) or (ii) or any series of compounds demonstrating activity against
the Target within such Program, in each case as determined by the JRC (or the JDC, as applicable) by Mutual Consent at the time of the Buy-In Party’s exercise of its Buy-In Right; and 

(b) with respect to each Independent Program that becomes a Buy-In Program for which Agios is the Commercializing Party, (i) the
Collaboration Compound with respect to which the IND Acceptance is achieved, and [**] Back-Up Compounds identified by the JRC (or the JDC, as applicable) by Mutual Consent at the time of the Buy-In Party’s exercise of its Buy-In Right.

 Section 1.15 “Buy-In Product” means any Licensed Product that contains as an active ingredient any
Buy-In Compound. 
 Section 1.16 “Buy-In Program” means any Independent Program for which the Buy-In Party
exercises its Buy-In Right pursuant to Section 3.11. 
 Section 1.17 “Calendar Quarter” means a
calendar quarter ending on the last day of March, June, September or December; provided, however, that the first Calendar Quarter shall begin on the Effective Date and end on the last day of June following the Effective Date.

 Section 1.18 “Calendar Year” means a period of time commencing on January 1 and ending on the
following December 31; provided, however, that the first Calendar Year shall begin on the Effective Date and end on December 31, 2010. 
 Section 1.19 “Celgene Collaboration Intellectual Property,” “Celgene Collaboration Know-How” and “Celgene Collaboration Patent Rights” means,
respectively, the Collaboration Intellectual Property Controlled by Celgene, the Collaboration Know-How Controlled by Celgene and the Collaboration Patent Rights Controlled by Celgene. 

Section 1.20 “Celgene Intellectual Property” means Celgene Know-How and Celgene Patent Rights, collectively.

 Section 1.21 “Celgene Know-How” means any Know-How that is (a) Controlled by Celgene as of the
Effective Date or during the Option Term; (b) necessary for the Development, Manufacture and/or Commercialization of Collaboration Targets, Collaboration Compounds, Licensed Compounds and/or Licensed Products; and (c) contributed by
Celgene, in Celgene’s sole discretion, to the Collaboration, as evidenced by written notice from Celgene to Agios; but excluding (i) Collaboration Know-How, and (ii) Know-How to the extent specifically related to any Target
other than a Collaboration Target. 

  
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 Section 1.22 “Celgene Patent Rights” means any Patent Rights that
(a) are Controlled by Celgene as of the Effective Date or during the Option Term; (b) Cover a Collaboration Target, Collaboration Compound, Licensed Compound and/or Licensed Product (including the composition of matter, manufacture or any
use thereof); and (c) are contributed by Celgene, in Celgene’s sole discretion, to the Collaboration, as evidenced by written notice from Celgene to Agios; but excluding (i) Collaboration Patent Rights, and (ii) Patent
Rights to the extent specifically related to a Target other than a Collaboration Target. 
 Section 1.23 “Celgene
Reverted Compound” means, with respect to each Independent Program that becomes a Celgene Reverted Program, (a) the Independent Compound(s) Developed under such Independent Program prior to such Independent Program becoming a Celgene
Reverted Program, (b) Back-Up Compounds identified by the JRC (or the JDC) by Mutual Consent at the time of such Independent Program becoming a Celgene Reverted Program, (c) any Analogs, Derivatives, [**] of any chemical entity identified
in (a) or (b), and (d) any compound that contains [**] of any of the foregoing in (a) or (b) or any series of compounds demonstrating activity against the Target within such Program, in each case as determined by the JRC (or the
JDC, as applicable) by Mutual Consent at the time of such Independent Program becoming a Celgene Reverted Program. 

Section 1.24 “Celgene Reverted Product” means any product that contains as an active ingredient a Celgene Reverted
Compound. 
 Section 1.25 “Celgene Reverted Program” means any Independent Program Developed by Celgene
and for which Agios does not exercise its Buy-In Right pursuant to Section 3.11. 
 Section 1.26 “Celgene
Reverted Target” means, with respect to any Independent Program Developed by Celgene that becomes a Celgene Reverted Program in accordance with Section 3.11(c)(iii), the Target which was the subject of such Independent Program.

 Section 1.27 “Clinical Trial” means a Phase I Study, a Phase II Study, a Phase III Study, a Phase IV
Study or a combination of any of the foregoing studies. 
 Section 1.28 “Co-Commercialized Product” means
a Licensed Product under an Optionable Program for which Celgene exercises the Celgene Program Option, excluding (a) any Split Products and (b) any Licensed Product in the US Territory under a Split Program if, after any Agios Opt-Out,
Celgene elects not to assume US Territory rights as set forth in Section 3.10(c)(ii). 
 Section 1.29
“Co-Commercialized Program” means any Licensed Program that relates to a Co-Commercialized Product. 

Section 1.30 “Collaboration” means the activities performed or to be performed by a Party or Parties, as the case
may be, under or in connection with a Program under this Agreement. 
 Section 1.31 “Collaboration
Compound” means a chemical entity Controlled by Agios (or, if the JRC (or the JDC, as applicable) agree by Mutual Consent in accordance with Section 3.6(a)(i) or Section 3.6(a)(ii), Controlled by Celgene) that is Active against a
Collaboration Target as of the date of its inclusion in a Discovery Program, Independent Program or Licensed Program, as applicable, or found to be Active against a Collaboration 

  
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Target in the course of conducting a Discovery Program, Independent Program or Licensed Program, as applicable. For purposes of clarity, any Agios Reverted Compound and any Celgene Reverted
Compound shall no longer be deemed a “Collaboration Compound” hereunder. 
 Section 1.32 “Collaboration
Intellectual Property” means Collaboration Know-How and Collaboration Patent Rights, collectively. 
 Section 1.33
“Collaboration Know-How” means any Know-How or interest therein, that is developed or generated, either solely by or on behalf of a Party and/or its Affiliate(s) or jointly by or on behalf of both Parties and/or their Affiliate(s),
in the conduct of the Collaboration. 
 Section 1.34 “Collaboration Patent Rights” means any Patent Rights
or interest therein Controlled by either Party or Controlled jointly by the Parties that Cover Collaboration Know-How. 

Section 1.35 “Collaboration Target(s)” means the Target(s) on the Target List. For purposes of clarity, any Agios
Reverted Target and any Celgene Reverted Target shall no longer be deemed a “Collaboration Target” hereunder. 

Section 1.36 “Commercialization” or “Commercialize” means any activities directed to using,
marketing, promoting, distributing, importing, offering to sell, and/or selling a product, after or in expectation of receipt of Regulatory Approval for such product (but excluding Development), including carrying out Phase IV Studies commenced
after First Commercial Sale of a Licensed Product anywhere in the world. 
 Section 1.37 “Commercializing
Party” means (a) Agios, with respect to a Split Product in the US Territory, unless and until any Agios Opt-Out occurs, (b) Celgene, with respect to a Split Product in the ROW Territory and, upon the occurrence of any Agios
Opt-Out and Celgene’s assumption of such rights pursuant to Section 3.10(c), the US Territory, (c) Celgene, with respect to any Licensed Product (other than a Split Product or any Buy-In Product) and any Celgene Reverted Product, and
(d) the Party that is not the Buy-In Party, with respect to any Buy-In Product. 
 Section 1.38 “Commercially
Reasonable Efforts” means, with respect to the performing Party, the carrying out of obligations of such Party in a diligent, expeditious and sustained manner, including the allocation of a commercially reasonable level of personnel and
financial resources, but in no event less than such level of resources that an established biopharmaceutical company [**] typically devotes to products of similar market potential at a similar stage in its development or product life, taking into
account scientific and commercial factors, including commercial Manufacturing, issues of safety and efficacy, product profit, difficulty in developing or manufacturing the Collaboration Compound, Licensed Compound or Licensed Product,
competitiveness of alternative Third Party products in the marketplace, the patent or other proprietary position of the Collaboration Compound, Licensed Compound or Licensed Product, the regulatory requirements involved and the potential
profitability for the performing Party of the Collaboration Compound, Licensed Compound or Licensed Product marketed or to be marketed. 

  
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 Section 1.39 “Companion Diagnostic” means a biomarker or diagnostic
test that may be used with a Licensed Product, or may be developed by the Parties pursuant to Section 3.14, to generate a result for the purposes of diagnosing a disease or condition, or to facilitate the application of the Licensed Product
that is used in the cure, mitigation, treatment, or prevention of disease, including a biomarker or diagnostic test used to diagnose the likelihood that a specific patient will contract a certain type of cancer or to predict which patients are
suitable candidates for a specific form of chemotherapy. 
 Section 1.40 “Completion of Phase I MAD” means
the completion of the first Phase I MAD Study and the delivery by Agios of a final written report meeting the Phase I Report Criteria, as set forth in Section 3.6(b)(iii)(A)(2). For avoidance of doubt, “Completion of Phase I MAD” does
not include the development of a protocol for a Phase II Study. 
 Section 1.41 “Confidential Information”
means (a) all confidential or proprietary information relating to Collaboration Targets, Celgene Reverted Targets, Agios Reverted Targets, Agreement Compounds, and Target Indications, and (b) all other confidential or proprietary
documents, technology, Know-How or other information (whether or not patentable) actually disclosed by one Party to the other pursuant to this Agreement or the Prior Confidentiality Agreement, including information regarding a Party’s
technology, products, business information or objectives and reports and audits under Sections 9.4(a)(ii), 9.4(d), 9.5(e), 9.8 and 9.10, and all proprietary biological materials of a Party. Notwithstanding the foregoing, at such point as a Target is
removed from the Target List (whether removed by Mutual Consent of the JRC, upon expiration of the Option Term (or, if applicable, with respect to any Extended Program, following any Post-Option Extension), or otherwise), the identity of such Target
shall not be the Confidential Information of either Party, unless added back to the Target List in accordance with Section 3.5. 
 Section 1.42 “Control” or “Controlled” means, with respect to any (a) Know-How or other information or materials, (b) any compounds, or
(c) intellectual property right, the possession (whether by license (other than a license granted under this Agreement) or ownership) by a Party of the ability to grant to the other Party access and/or a license, as provided herein, without
violating the terms of any agreement with any Third Party existing as of the Effective Date or thereafter during the Term. 

Section 1.43 “Core Patent Rights” means those Patent Rights comprising [**] claims. 

Section 1.44 “Cover,” “Covering” or “Covered” means that, with respect to a
product or technology, but for a license granted to a Person under a Valid Claim included in the Patent Rights under which such license is granted, the Development, Manufacture, Commercialization and/or other use of such product or practice of such
technology by such Person would infringe any Valid Claim of any patent included in such Patent Rights or, with respect to a Valid Claim included in any patent application, would infringe such Valid Claim if such patent application were to issue as a
patent. 

  
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 Section 1.45 “Derivative” means, with respect to a specific
Development Candidate, Back-Up Compound, Buy-In Compound, Picked Compound or Celgene Reverted Compound against a specific Target, any molecule (a) that is synthesized using a synthetic route that is [**] used for a specific Development
Candidate, Back-Up Compound, Buy-In Compound, Picked Compound or Celgene Reverted Compound against a specific Target, respectively, such that such molecule is derived from, by a maximum of [**] synthetic steps (excluding protection/de-protection
steps), such a specific Development Candidate, Back-Up Compound, Buy-In Compound, Picked Compound or Celgene Reverted Compound, respectively, and such that any compound modifications (i.e., differences between such molecule and the
corresponding Development Candidate, Back-up Compound, Buy-In Compound, Picked Compound or Celgene Reverted Compound) are readily determined to be [**] or [**] the corresponding Development Candidate, Back-Up Compound, Buy-In Compound, Picked
Compound, or Celgene Reverted Compound, respectively, and (b) that has a level of potency against such Target, expressed as [**], as applicable, for the Development Candidate as defined in Section 1.47(a), the Buy-In Compound as defined in
Section 1.14(a)(i), the most advanced Picked Compound as defined in Section 1.98(a)(i), or the most advanced Celgene Reverted Compound as defined in Section 1.23(a), respectively, for such Target, as measured in an [**] assay for such
Target designated by the JDC. 
 Section 1.46 “Develop” or “Development” means discovery,
research, preclinical, non-clinical and clinical development activities, including activities relating to screening, assays, test method development and stability testing, toxicology, pharmacology, formulation, quality assurance/quality control
development, Clinical Trials (excluding a Phase IV Study commenced after First Commercial Sale of a product anywhere in the world), technology transfer, statistical analysis, process development and scale-up, pharmacokinetic studies, data collection
and management, report writing, and other pre-Regulatory Approval activities. 
 Section 1.47 “Development
Candidate” means, with respect to each Program (excluding any Independent Program), (a) a Collaboration Compound that meets the Clinical Candidate Guidelines, as determined in accordance with Section 3.6(b), (b) the Back-Up
Compound identified by Agios pursuant to Section 3.6(b)(ii) and any other Back-Up Compounds identified by the JRC (or the JDC, as applicable) by Mutual Consent at the DC Selection Stage, (c) any [**] of any chemical entity identified in
(a) or (b), and (d) any compound that contains [**] of any of the foregoing in (a) or (b) or any series of compounds demonstrating activity against the Target within such Program, in each case as determined by the JRC (or the
JDC, as applicable) by Mutual Consent within [**] days of the nomination of the compound described in the foregoing (a) in accordance with Sections 3.6(b) and 3.8(b). 
 Section 1.48 “Development Cost Initiation Date” means (a) with respect to any Co-Commercialized Program for which Celgene exercises the Celgene Program Option at IND Acceptance,
[**]; (b) with respect to any Co-Commercialized Program for which Celgene exercises the Celgene Program Option at Completion of Phase I MAD, [**]; (c) with respect to a Buy-In Program, [**]; (d) with respect to any Picked Validated
Program selected by Celgene, [**]; and (e) with respect to any Split Program, [**]. 

  
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 Section 1.49 “Discovery Program” means, for each Collaboration Target,
the activities performed or to be performed by Agios (or Celgene, with its prior written consent) in accordance with the Discovery Plan and under the overall direction of the JRC and JSC to discover and Develop Collaboration Compounds directed to
such Collaboration Target during the Discovery Term. For purposes of clarity, unless the JRC decides otherwise by Mutual Consent, the Parties intend that activities directed to a distinct method of modulating a Collaboration Target shall not be
deemed a distinct Discovery Program (i.e., more than one Discovery Program cannot be directed to the same Collaboration Target). For purposes of clarity, if and when a Discovery Program becomes an Independent Program, Licensed Program, Agios
Reverted Program, or Celgene Reverted Program, such Independent Program, Licensed Program, Agios Reverted Program, or Celgene Reverted Program shall no longer be deemed a “Discovery Program” for purposes of this Agreement (unless or until
any such Independent Program again becomes a Discovery Program pursuant to Section 3.5(a)(i) or Section 3.5(b)(ii)(B)). 
 Section 1.50 “Discovery Term” means, with respect to each Discovery Program, the period commencing on the Effective Date and ending upon the earliest of: 

(a) rejection or waiver by Celgene at the DC Selection Stage of any confirmed Development Candidate Developed under such Discovery
Program pursuant to Section 3.6(b) (or failure to exercise Celgene’s right to designate such confirmed Development Candidate for further Development within the exercise period set forth in Section 3.6(b)(iii)), subject to
Celgene’s right to defer making a DC Commitment pursuant to Section 3.6(d); 
 (b) if Celgene designates a confirmed
Development Candidate for further Development pursuant to Section 3.6(b), the earlier of (i) the Option Exercise Date and (ii) rejection or waiver by Celgene of its right to exercise the Celgene Program Option (or failure to exercise
the Celgene Program Option within the applicable Celgene Option Exercise Period), subject to Celgene’s right to defer making a DC Commitment pursuant to Section 3.6(d); 

(c) such time as such Discovery Program becomes an Independent Program, Agios Reverted Program or a Celgene Reverted Program, as
applicable; 
 (d) such time as the Collaboration Target to which such Discovery Program relates is removed from the Target List
pursuant to Section 3.5(b) below, unless such Collaboration Target is added back to the Target List as part of a Discovery Program pursuant to such Section 3.5(a) or 3.5(b), in which event the Discovery Term for such Collaboration Target
shall again be in effect; and 
 (e) the end of the Option Term; provided, however, that, with respect to
any Discovery Program directed to [**] that has not yet reached the DC Selection Stage as of the end of the Option Term, the Discovery Term for each such Discovery Program shall not end until the earlier of (i) the [**] year following the end
of the Option Term and (ii) IND Acceptance for a Development Candidate in such Discovery Program; provided further that, with respect to any Extended Program, the Discovery Term for each such Extended Program shall not end at the end of
the Option Term but shall continue until the expiration of the Post-Option Extension. 
 Section 1.51 “Executive
Officers” means Celgene’s Chief Executive Officer (or the officer or employee of Celgene then serving in a substantially equivalent capacity) or his designee and Agios’ Chief Executive Officer (or the officer or employee of Agios
then serving in a substantially equivalent capacity) or his designee; provided that any such designee must have decision-making authority on behalf of the applicable Party. 

  
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 Section 1.52 “Exclusivity Period” means, as to each Licensed Program
and each Celgene Reverted Program, as applicable, on a Program-by-Program (or Celgene Reverted Program-by-Celgene Reverted Program) and Collaboration Target-by-Collaboration Target (or Celgene Reverted Target-by-Celgene Reverted Target) basis, the
period commencing on the earlier of (a) [**] and (b) [**], and ending upon the earlier of (x) [**], and (y) [**] with respect to all Licensed Products in the applicable Licensed Program or all Celgene Reverted Products in the
applicable Celgene Reverted Program, as applicable. As to each Independent Program, on a Program-by-Program and Collaboration Target-by-Collaboration Target basis, “Exclusivity Period” means the period commencing upon the expiration of the
Option Term and ending upon the earliest of (A) [**] with respect to the applicable Independent Program, (B) [**], and (C) [**]; provided that, if an Independent Program becomes a Buy-In Program or a Celgene Reverted Program,
the “Exclusivity Period” set forth in the immediately preceding sentence shall apply. 
 Section 1.53
“Existing Third Party Agreement” means any agreement listed on Schedule 1.53. 
 Section 1.54
“FDA” means the United States Food and Drug Administration, or any successor agency thereof. 

Section 1.55 “FDCA” means the United States Federal Food, Drug, and Cosmetic Act, and the regulations promulgated
thereunder, each as amended from time to time. 
 Section 1.56 “Field” means the treatment, control,
mitigation, prevention or cure or diagnosis of any Indications. 
 Section 1.57 “First Commercial Sale”
means the first commercial sale of a Royalty-Bearing Product by the Commercializing Party, its Affiliates, distributors and/or agents in a country in an arms’ length transaction to a Third Party following receipt of applicable Regulatory
Approval of such product in such country. Sales for test marketing or clinical trial purposes shall not constitute a First Commercial Sale. 
 Section 1.58 “FPD” means, with respect to a Clinical Trial, the dosing of the first human subject with any Collaboration Compound, Licensed Compound or Licensed Product, as
applicable, in such Clinical Trial. 
 Section 1.59 “Generic Competition” means, with respect to a
Royalty-Bearing Product in a given country in a given Calendar Year, that, during such Calendar Year [**] Generic Products shall be commercially available in such country. 
 Section 1.60 “Generic Product” means, as to a Royalty-Bearing Product, any product (including a “generic product” approved by way of an Abbreviated New Drug Application by
the FDA (or equivalent regulatory mechanism for another Regulatory Authority), “biogeneric,” “follow-on biologic,” “follow-on biological product,” “follow-on protein product,” “similar biological
medicinal product,” or “biosimilar product”) that, in each case, (a) is sold by a Third 

  
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Party that is not a sublicensee of the Commercializing Party or any of its Affiliates and that has not otherwise been authorized by the Commercializing Party or any of its Affiliates under a
Regulatory Approval granted by a Regulatory Authority to such Third Party that is based upon or relies upon the Regulatory Approval granted by such Regulatory Authority for such Royalty-Bearing Product; and (b) in the United States, is
“therapeutically equivalent,” “comparable,” “biosimilar,” or “interchangeable,” as evaluated by the FDA, applying the definition of “therapeutically equivalent” set forth in the preface to the
then-current edition of the FDA publication “Approved Drug Products With Therapeutic Equivalence Evaluations” or any other definitions set forth in the U.S. Code, FDA regulations, or other source of U.S. Law and, outside the United States,
meets such equivalent determination by the applicable Regulatory Authorities (including a determination that the product is “comparable,” “interchangeable,” “bioequivalent,” or “biosimilar” with respect to the
Royalty-Bearing Product), in each case, as is necessary to permit a pharmacist or other individual authorized to dispense pharmaceuticals under Law to substitute one product for another product in the absence of specific instruction from a physician
or other authorized prescriber under Law. 
 Section 1.61 “IDH1” means (alias PICD, IDPC; UniProt
identifier O75874) the persoxisomal/cytosolic form of isocitrate dehydrogenase that catalyzes the NADP+ dependent conversion of isocitrate to alpha-ketoglutarate. 
 Section 1.62 “IND” means any Investigational New Drug application, filed with the FDA pursuant to Part 312 of Title 21 of the U.S. Code of Federal Regulations, including any
supplements or amendments thereto. References herein to IND shall include, to the extent applicable, any comparable filing(s) outside the United States. 
 Section 1.63 “IND Acceptance” means thirty (30) days following the filing of an IND with the FDA; provided that the FDA has not provided any communication indicating that
the conduct of clinical activities described in such IND may not begin within thirty (30) days after such filing. In the event that any such communication is provided by the FDA, “IND Acceptance” means the date that the Parties are
permitted by the FDA to begin clinical activities. If the Parties both agree, “IND Acceptance” shall mean the date, following filing of an IND with a Regulatory Authority (other than the FDA), that Agios receives a written communication
from such Regulatory Authority pursuant to which the conduct of clinical activities described in the appropriate submissions is permitted to begin. 
 Section 1.64 “IND-Enabling Studies” means studies that are required to meet the requirements for filing an IND with a Regulatory Authority, including ADME (absorption, distribution,
metabolism, and excretion) and GLP (good laboratory practice) toxicology studies, or studies required for the preparation of the CMC (chemistry, manufacturing, and controls) section of such IND, including studies relating to analytical methods and
purity analysis, and formulation and Manufacturing development studies, all as necessary to obtain the permission of the Regulatory Authority to begin the human clinical testing proposed to be pursued under the Discovery Plan or Development Plan, as
applicable. Unless the Parties mutually agree, all IND-Enabling Studies will be for purposes of filing an IND with the FDA. 

  
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 Section 1.65 “IND Study Criteria” means the criteria set forth on
Schedule 1.65 with respect to IND-Enabling Studies. The IND Study Criteria may not be amended other than by Mutual Consent of the JDC. 
 Section 1.66 “Independent Compound” means, with respect to each Independent Program, all Collaboration Compounds on the Compound List for such Independent Program immediately prior
to it becoming an Independent Program; provided that any Collaboration Compounds that are also on the Compound List of another Program shall not be deemed “Independent Compounds”; provided further that, as the Compound List
for such Independent Program becomes narrower, as contemplated by Section 3.6(a)(iii), Collaboration Compounds removed from the Compound List for such Independent Program shall no longer be deemed Independent Compounds but shall become Residual
Program Compounds. 
 Section 1.67 “Independent Program” means a Discovery Program which a Party elects to
Develop pursuant to Section 3.5(a) or 3.5(b). 
 Section 1.68 “Independent Target” means, with
respect to each Discovery Program that becomes an Independent Program, the Target that was the subject of such Discovery Program. 
 Section 1.69 “Indication” means any human disease, condition or syndrome, or sign or symptom of, or associated with, a human disease or condition. 

Section 1.70 “Know-How” means any tangible or intangible trade secrets, know-how, expertise, discoveries,
inventions, information, data or materials, including ideas, concepts, formulas, methods, procedures, designs, technologies, compositions, plans, applications, technical data, assays, manufacturing information or data, samples, chemical and
biological materials and all derivatives, modifications and improvements thereof. 
 Section 1.71 “Law”
means any law, statute, rule, regulation, ordinance or other pronouncement having the effect of law, of any federal, national, multinational, state, provincial, county, city or other political subdivision, as from time to time enacted, repealed or
amended, including good clinical practices and adverse event reporting requirements, guidance from the International Conference on Harmonization or other generally accepted conventions, the FDCA and similar laws and regulations in countries outside
the United States, and all other rules, regulations and requirements of the FDA and other applicable Regulatory Authorities. 

Section 1.72 “Lead Party” means: 
 (a) With respect to any Discovery Program, Agios until the earlier of the Option Exercise Date and the end of the Discovery Term for such Discovery Program; 

(b) With respect to any Co-Commercialized Program, Celgene following the Option Exercise Date; 

(c) With respect to any Picked Validated Program selected by Celgene pursuant to Section 3.7 (or, as applicable, Section 3.3(b)(iii),
Section 3.6(c) or Section 15.5), Celgene following Celgene’s selection of such Validated Program pursuant to Section 3.7 (or, as applicable, Section 3.3(b)(iii), Section 3.6(c) or Section 15.5); 

(d) With respect to any Split Program in the US Territory, Agios following the Option Exercise Date for such Split Program (unless and
until any Agios Opt-Out occurs), except that, if Celgene is the Party responsible for Manufacturing, then Celgene shall be the Lead Party in the US Territory with respect to Manufacturing matters, unless a supply failure occurs under the Supply
Agreement, in which event Agios shall be the Lead Party in the US Territory with respect to Manufacturing matters; 

  
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 (e) With respect to any Split Program in the US Territory after an Agios Opt-Out, Celgene
following such Agios Opt-Out if Celgene assumes such US Territory rights pursuant to Section 3.10(c); 
 (f) With respect
to any Split Program in the ROW Territory, Celgene following the Option Exercise Date for such Split Program; 
 (g) With
respect to any Celgene Reverted Program, Celgene at such time as such Program becomes a Celgene Reverted Program; 
 (h) With
respect to any Agios Reverted Program, Agios at such time as such Program becomes an Agios Reverted Program; 
 (i) With respect
to any Buy-In Program, the Commercializing Party; and 
 (j) With respect to any Independent Program, the Party that elects to
undertake the independent Development of such Independent Program pursuant to Section 3.5(a) or Section 3.5(b). 

Section 1.73 “Licensed Compound” means (a) any Development Candidate under a Program with respect to which
Celgene has exercised the Celgene Program Option pursuant to Section 3.6 (or, as applicable, Section 15.5(a)(iv)), (b) any Picked Compound under a Picked Validated Program selected by Celgene pursuant to Section 3.7 (or, as
applicable, Section 3.3(b)(iii), Section 3.6(c) or Section 15.5), and (c) any Buy-In Compound. 

Section 1.74 “Licensed Product” means any product that contains as an active ingredient a Licensed Compound.

 Section 1.75 “Licensed Program” means, for each Collaboration Target, the activities performed or to be
performed by a Party or Parties, as the case may be, in accordance with the Development Plan and/or the Commercialization Plan, as the case may be, and under the overall direction of the JDC, JCC and JSC, as applicable, to Develop, Manufacture and
Commercialize Licensed Compounds and Licensed Products directed to such Collaboration Target following the Discovery Term. For purposes of clarity, a Licensed Program includes a Discovery Program for which Celgene exercises the Celgene Program
Option (including a Split Program), a Picked Validated Program selected by Celgene pursuant to Section 3.7 (or, as applicable, Section 3.3(b)(iii), Section 3.6(c) or Section 15.5), and, upon the Buy-In Party’s exercise of
its Buy-In Rights with respect to a Buy-In Program, such Buy-In Program, but excludes any Independent Program unless and until the Buy-In Party exercises its Buy-In Rights with respect to such Independent Program. 

Section 1.76 “Licensee Partner” means any Third Party to whom a Party or any of its Affiliates grants a sublicense
or license with respect to the Development, Manufacture or Commercialization of Licensed Products in the Field under the rights to Agios Intellectual Property, Celgene Intellectual Property or Collaboration Intellectual Property, as the case may

  
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be, granted to such Party or Affiliate hereunder, in each case excluding (a) any Person that is granted a sublicense in accordance with Section 8.4(a), and (b) wholesale
distributors or any other Third Party that purchases Licensed Product in an arm’s-length transaction, where such Third Party does not have a sublicense to Develop, Manufacture or Commercialize the Licensed Product except for a limited
sublicense to the extent required to enable such Third Party to perform final packaging for such Licensed Product for local distribution. 
 Section 1.77 “Major European Countries” means France, Germany, Italy, Spain and the United Kingdom. 
 Section 1.78 “Major Market” means each of the United States, Japan, and the Major European Countries. 
 Section 1.79 “Manufacture” or “Manufacturing” means, as applicable, all activities associated with the production, manufacture, processing, filling, packaging,
labeling, shipping, and storage of a drug substance or drug product, and/or any components thereof, including process and formulation development, process validation, stability testing, manufacturing scale-up, preclinical, clinical and commercial
manufacture and analytical methods development and validation, product characterization, quality assurance and quality control development, testing and release. 
 Section 1.80 “Manufacturing Technology” means copies of all Celgene Know-How, Agios Know-How or Collaboration Know-How, as applicable, which are necessary or useful for Manufacturing
preclinical, clinical and/or commercial supply, as applicable, of Collaboration Compounds, Licensed Compounds and/or Licensed Products under a Program, including specifications, assays, batch records, quality control data, and transportation and
storage requirements. 
 Section 1.81 “Metabolome” means enzymes, receptors, transporters that are direct
exponents of cellular, or biochemical reactions (including redox reactions), in each case, that [**], e.g., amino acids, nucleotides, lipids, carbohydrate monomers and dimers. For the avoidance of doubt, “Metabolome” will exclude,
for example, proteins that have activity in signal transduction, epigenetic, protein translation, cellular or sub-cellular structures, gene expression, protein degradation via the ubiquitination pathway as their role in cellular function.

 Section 1.82 “Mutual Consent” means a matter requiring the unanimous agreement of both Parties or both
Parties’ Committee members, as applicable, with each Party, in its sole discretion, being entitled to veto the matter, subject to arbitration pursuant to Section 2.9 in the case of Arbitrable Matters. 

Section 1.83 “NDA” means an application submitted to a Regulatory Authority for the marketing approval of a
Licensed Product, including (a) a New Drug Application, Product License Application or Biologics License Application filed with FDA or any successor applications or procedures, (b) a foreign equivalent of a U.S. New Drug Application,
Product License Application or Biologics License Application or any successor applications or procedures, and (c) all supplements and amendments that may be filed with respect to the foregoing. 

  
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 Section 1.84 “Oncology Field” means the treatment, control,
mitigation, prevention or cure or diagnosis of any oncology Indications or any dysplastic syndromes or states (e.g., MDS). 
 Section 1.85 “Option Exercise Date” means, on an Optionable Program-by-Optionable Program basis, with respect to each Optionable Program for which Celgene has exercised the Celgene
Program Option, the date on which Celgene provides notice of its exercise of the Celgene Program Option pursuant to Section 3.6 (or, as applicable, Section 15.5(a)(iv)). 

Section 1.86 “Optionable Program” means (a) a Discovery Program that reaches the DC Selection Stage during the
Option Term, (b) a Discovery Program pursuant to which the option set forth in, as applicable, Section 3.6(c) or Section 15.5(a)(iv) is exercisable, or (c) a Discovery Program directed to [**] that does not reach the DC Selection
Stage as of the end of the Option Term but reaches the DC Selection Stage during the [**] year period following the end of the Option Term. 
 Section 1.87 “Party” means Agios or Celgene; “Parties” means Agios and Celgene. 
 Section 1.88 “Patent Rights” means (a) patents and patent applications anywhere in the world, (b) all divisionals, continuations, continuations in-part thereof or any other
patent application claiming priority, or entitled to claim priority, directly or indirectly to (i) any such patents or patent applications or (ii) any patent or patent application from which such patents or patent applications claim, or is
entitled to claim, direct or indirect priority, and (c) all patents issuing on any of the foregoing anywhere in the world, together with all registrations, reissues, re-examinations, patents of addition, renewals, supplemental protection
certificates, or extensions of any of the foregoing anywhere in the world. 
 Section 1.89 “Person” means
any corporation, limited or general partnership, limited liability company, joint venture, trust, unincorporated association, governmental body, authority, bureau or agency, any other entity or body, or an individual. 

Section 1.90 “Pharmacophore” means a [**]. 

Section 1.91 “Phase I MAD Protocol Criteria” means the criteria for a Phase I MAD Study set forth on Schedule
1.91. The Phase I MAD Protocol Criteria may not be amended other than by Mutual Consent of the JDC. 
 Section 1.92
“Phase I MAD Study” means a dose-exploratory Phase I Study to determine a recommended Phase II Study dose that is conducted in the US Territory, unless Celgene approves the conduct of such study outside the US Territory. 

Section 1.93 “Phase I Report Criteria” means the criteria for the content of a final report on a Phase I MAD Study
set forth on Schedule 1.93. The Phase I Report Criteria may not be amended other than by Mutual Consent of the JDC. 

Section 1.94 “Phase I Study” means a human clinical trial of a product, the principal purpose of which is a
preliminary determination of safety, tolerability and pharmacokinetics in study subjects where potential pharmacological activity may be determined or similar clinical study prescribed by the Regulatory Authorities, from time to time, pursuant to
applicable Law or otherwise, including for example the trials referred to in 21 C.F.R. §312.21(a), as amended (or the non-United States equivalent thereof). 

  
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 Section 1.95 “Phase II Study” means a human clinical trial of a
product, the principal purpose of which is a preliminary determination of safety and efficacy or appropriate dosage ranges in the target patient population or a similar clinical study prescribed by the Regulatory Authorities, from time to time,
pursuant to applicable Law or otherwise, including for example the trials referred to in 21 C.F.R. §312.21(b), as amended (or the non-United States equivalent thereof). 
 Section 1.96 “Phase III Study” means a pivotal human clinical trial of a product, the principal purpose of which is to gain evidence with statistical significance of the efficacy of
a product in a target population, to obtain expanded evidence of safety for such product that is needed to evaluate the overall benefit-risk relationship of such product, and to provide an adequate basis to determine warnings, precautions, and
adverse reactions that are associated with such product in the dosage range to be prescribed, which trial is intended to support or maintain Regulatory Approval for such product, including all tests and studies prescribed by the applicable
Regulatory Authority, from time to time, pursuant to applicable Law or otherwise, including for example the trials referred to in 21 C.F.R. §312.21(c), as amended (or the non-United States equivalent thereof). 

Section 1.97 “Phase IV Study” means a human clinical trial of a product which is (a) conducted to satisfy a
requirement of a Regulatory Authority in order to maintain a Regulatory Approval or (b) conducted voluntarily after Regulatory Approval of the product has been obtained from an appropriate Regulatory Authority for enhancing marketing or
scientific knowledge of an approved Indication. 
 Section 1.98 “Picked Compound” means, 

(a) with respect to each Picked Validated Program selected by Celgene pursuant to Section 3.7 (or, as applicable,
Section 3.3(b)(iii), Section 3.6(c) or Section 15.5), (i) any and all Collaboration Compound(s) that are Active against the Collaboration Target that is the subject of such Picked Validated Program and Developed under such Picked
Validated Program prior to the expiration of the Option Term, including any Collaboration Compounds on the Compound List for such Picked Validated Program, (ii) Collaboration Compounds (including Back-Up Compounds) identified by the JRC (or the
JDC, as applicable) by Mutual Consent following the Option Term as being Active against the Collaboration Target that is the subject of such Picked Validated Program, (iii) any Analogs, Derivatives, [**] of any chemical entity identified in
(i) or (ii), (iv) any compound that contains [**] of any of the foregoing in (i) or (ii) or any series of compounds demonstrating activity against the Target within such Program, in each case as determined by the JRC (or the JDC,
as applicable) by Mutual Consent following the Option Term, and (v) any compound Controlled by Celgene that is Active against the Collaboration Target that is identified and used by Celgene after Celgene’s selection of such Picked
Validated Program; and 

  
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 (b) with respect to each Picked Validated Program selected by Agios pursuant to
Section 3.7 (or, as applicable, Section 3.3(b)(iii) or Section 15.5), (i) one (1) Collaboration Compound that is Active against the Collaboration Target that is the subject of such Picked Validated Program and Developed
under such Picked Validated Program prior to the expiration of the Option Term, and (ii) [**] Back-Up Compounds identified by the JRC (or the JDC, as applicable) by Mutual Consent at the time of such Picked Validated Program becoming an Agios
Reverted Program. 
 Section 1.99 “Picked Product” means any Licensed Product that contains as an active
ingredient any Picked Compound. 
 Section 1.100 “[**]” means [**]. 

Section 1.101 “Prior Confidentiality Agreement” means the Mutual Confidentiality Agreement between Agios and
Celgene, dated as of September 9, 2009. 
 Section 1.102 “Program” means a Discovery Program,
Independent Program or a Licensed Program, as the context requires, but excluding any Agios Reverted Program or Celgene Reverted Program. “Programs” means all of the foregoing Discovery Programs, Independent Programs and/or Licensed
Programs. 
 Section 1.103 “Prosecution” or “Prosecute” means the filing, preparation,
prosecution (including any interferences, reissue proceedings, reexaminations, and oppositions) and maintenance of Patent Rights. 
 Section 1.104 “Publication” means any publication in a scientific journal, any abstract to be presented to any scientific audience, any presentation at any scientific conference,
including slides and texts of oral or other public presentations, any other scientific presentation and any other oral, written or electronic disclosure directed to a scientific audience that pertains to any Collaboration Targets, Celgene Reverted
Targets, Collaboration Compounds, Development Candidates, Independent Compounds, Celgene Reverted Compounds, Celgene Reverted Products, Licensed Compounds, Licensed Products, Target Indications, and Collaboration Know-How, or the use of any of the
foregoing, or the data or result from any work under the Validated Programs, Discovery Programs, Licensed Programs, Independent Programs, or Celgene Reverted Programs. 
 Section 1.105 “Publication Guidelines” means the criteria for Publication set forth on Schedule 1.105. The Publication Guidelines may not be amended other than by Mutual
Consent of the JSC. 
 Section 1.106 “Regulatory Approval” means all approvals of the applicable
Regulatory Authority necessary for the commercial marketing and sale of a product for a particular indication in a country. 

Section 1.107 “Regulatory Authority” means a federal, national, multinational, state, provincial or local
regulatory agency, department, bureau or other governmental entity with authority over the testing, manufacture, use, storage, import, promotion, marketing or sale of a product in a country or territory. 

  
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 Section 1.108 “Regulatory Documentation” means, with respect to the
Collaboration Compounds, Licensed Compounds and Licensed Products, all INDs, NDAs and other regulatory applications submitted to any Regulatory Authority, Regulatory Approvals, pre-clinical and clinical data and information, regulatory materials,
drug dossiers, master files (including Drug Master Files, as defined in 21 C.F.R. 314.420 and any non-United States equivalents), and any other data, reports, records, regulatory correspondence and other materials relating to Development or
Regulatory Approval of a Collaboration Compound, Licensed Compound or Licensed Product, or required to Manufacture, distribute or sell such Collaboration Compounds, Licensed Compounds and/or Licensed Products, including any information that relates
to pharmacology, toxicology, chemistry, Manufacturing and controls data, batch records, safety and efficacy, and any safety database. 
 Section 1.109 “Regulatory Exclusivity” means, with respect to a Royalty-Bearing Product in a country, that the Royalty-Bearing Product has been granted marketing exclusivity afforded
approved drug products, or approved biological products if applicable, pursuant to (a) Sections 505(c), 505(j), and 505A of the FDCA, and the regulations promulgated thereunder, as amended from time to time, or similar laws enacted to apply to
biological products, and the regulations promulgated thereunder, as amended from time to time, or their equivalent in a country other than the United States, (b) the orphan drug exclusivity afforded approved drugs designated for rare diseases
or conditions under Sections 526 and 527 of the FDCA, and the regulations promulgated thereunder, as amended from time to time, or its equivalent in a country other than the United States, or (c) any future Law. 

Section 1.110 “Residual Program Compound” means, subject to Section 3.12(c), any chemical entity
(a) included in, or otherwise Developed under a Discovery Program or Independent Program directed to any Collaboration Target that ceases to be a Collaboration Target hereunder (as a result of it being removed from the Target List and/or
becoming an Agios Reverted Target or Celgene Reverted Target), excluding any Agios Reverted Compound or Celgene Reverted Compound, or (b) that is removed from a Compound List as set forth in Section 3.6(a)(iii). 

Section 1.111 “Right of Reference or Use” means a “Right of Reference or Use” as that term is defined in
21 C.F.R. §314.3(b), and any non-United States equivalents. 
 Section 1.112 “ROW Territory” means
all countries in the world other than the US Territory. 
 Section 1.113 “Royalty-Bearing Product” means a
Co-Commercialized Product, a Split Product, a Buy-In Product, a Picked Product and a Celgene Reverted Product, as applicable. 

Section 1.114 “Split Compound” means any Licensed Compound that is Developed under a Split Program. 

Section 1.115 “Split Product” means any Licensed Product that contains as an active ingredient any Split Compound.

  
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 Section 1.116 “Split Program” means any Licensed Program for which
Celgene exercised the Celgene Program Option and under which Agios retains all US Territory rights and Celgene retains all ROW Territory rights pursuant to Section 3.10. 
 Section 1.117 “Target” means any and all [**] cellular metabolism that is believed to be associated with a disease activity in the Oncology Field when initially included within the
Collaboration, all of which shall be collectively regarded as a single target, subject to Section 3.5(c). 

Section 1.118 “Target Indication” means, with respect to each Program and the Collaboration Target to which such
Program is directed, any Indication that is designated as a target Indication with respect to such Program in accordance with this Agreement. 
 Section 1.119 “Target List” means the list of Targets attached hereto as Schedule 1.119, as such list may be updated or modified by the JRC pursuant to Section 3.5.

 Section 1.120 “Terminated Product” means, with respect to a Terminated Program, any Collaboration
Compound, Licensed Compound or Licensed Product Developed in or arising from such Terminated Program. 
 Section 1.121
“Terminated Program” means (a) with respect to the termination of this Agreement with respect to a Program pursuant to Section 14.2(a) or 14.2(b), the Program subject to such termination; and (b) with respect to the
termination of this Agreement in its entirety, all Programs. 
 Section 1.122 “Territory” means the US
Territory and the ROW Territory. 
 Section 1.123 “Third Party” means any Person other than Agios or
Celgene or each Party’s respective Affiliates. 
 Section 1.124 “Third Party Agreement” means
(a) any Existing Third Party Agreement and (b) any other Third Party agreements which either Party may enter into, during the Term in accordance with the terms of this Agreement, to acquire or license Third Party Patent Rights or Know-How
that are necessary or useful to use a Collaboration Target or for the Development, Manufacture and/or Commercialization of Collaboration Compounds, Licensed Compounds and/or Licensed Products. 

Section 1.125 “Third Party Rights” means, with respect to a Party, any rights of, and any limitations, restrictions
or obligations imposed by, Third Parties pursuant to any Third Party Agreements. 
 Section 1.126 “US
Territory” means the United States of America, including its territories, possessions and Puerto Rico. 

Section 1.127 “Valid Claim” means (a) a claim of any issued, unexpired patent that has not been revoked or
held unenforceable or invalid by a decision of a court or governmental agency of competent jurisdiction from which no appeal can be taken, or with respect to which an appeal is not taken within the time allowed for appeal, and that has not been
disclaimed or 

  
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admitted to be invalid or unenforceable through reissue, disclaimer or otherwise, or (b) a patent application or subject matter of a claim thereof filed by a Person in good faith that has
not been cancelled, withdrawn or abandoned, nor been pending for more than [**] years from the earliest filing date to which such patent application or claim is entitled. 
 Section 1.128 “Validation Criteria” means the criteria for biological validation of the potential efficacy of a Collaboration Target in the Oncology Field, which validation criteria
is set forth in Schedule 1.128. The Validation Criteria may not be amended other than by Mutual Consent of the JRC. 

Section 1.129 “Validated Program” means a Discovery Program for which the Collaboration Target has met the
Validation Criteria and for which a viable starting point for medicinal chemistry, biologics or other treatment modality has been identified. 
 Section 1.130 Additional Definitions. Each of the following definitions is set forth in the section of this Agreement indicated below: 

 

			
	 DEFINITION
	  	SECTION
	AAA	  	2.9
	Accounting Standards	  	Exhibit A
	Acquired Party	  	15.4(b)
	Acquired Party Activity	  	15.4(c)
	Acquired Third Party	  	15.4(c)
	Acquirer	  	15.4(b)
	Acquisition	  	15.4(b)
	Agios	  	Preamble
	Agios Deferral	  	3.10(a)(ii)
	Agios Indemnified Parties	  	13.1(a)
	Agios Opt-Out	  	3.10(c)
	Agios Opt-Out Date	  	3.10(c)
	Agios Reverted Program	  	3.12(a)
	Agreement	  	Preamble
	Alliance Manager	  	2.6
	Annual Net Sales	  	Exhibit A
	Arbitrable Matters	  	2.9(e)
	Audit Team	  	9.10(a)
	Audit Rights Holder	  	9.10(f)
	Auditee	  	9.10(f)
	Bankruptcy Code	  	8.11
	[**] Agreement	  	Schedule 1.53
	[**] Indemnitees	  	13.3(a)
	Breaching Party	  	14.2(b)(i)
	Buy-In Party	  	3.11(a)
	Buy-In Right	  	3.11(b)
	Buy-In Right Term	  	3.11(d)(i)
	Celgene	  	Preamble

  
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	 DEFINITION
	  	SECTION
	Celgene Election Period	  	15.5(a)(i)
	Celgene IND Option Exercise Period	  	3.6(b)(iii)(A)
	Celgene Indemnified Parties	  	13.2(a)
	Celgene MAD Option Exercise Period	  	3.6(b)(iii)(A)(2)
	Celgene Option Exercise Period	  	3.6(b)(iii)(A)(2)
	Celgene Program Option	  	3.2
	Challenge	  	10.8(a)
	Change of Control	  	15.5(c)
	Clinical Candidate Guidelines	  	3.6(b)(i)
	Combination Product	  	Exhibit A
	Commercialization Activities	  	6.3(a)
	Commercialization Plan	  	6.2(a)(i)
	Committee	  	2.1
	Competitive Infringement	  	10.3(b)(i)
	Compound List	  	3.6(a)(iii)
	CREATE Act Patent	  	10.7
	DC Commitment	  	3.6(b)(iii)
	DC Selection Stage	  	3.6(b)(ii)
	Delayed Commitment Date	  	3.6(d)
	Development Budget	  	3.9(a)
	Development Costs	  	Exhibit A
	Development Plan	  	3.9(a)
	Disclosing Party	  	11.1
	Discovery Plan	  	3.4
	Dispute	  	15.1
	DOJ	  	3.6(e)(iv)(A)
	[**] Agreement	  	Schedule 1.53
	Earlier Patent	  	10.7
	Effective Date	  	Preamble
	Expert	  	2.9(a)
	Extended Initial Phase	  	3.3(b)(iii)
	Extended Program	  	3.3(d)
	Failed Product	  	9.6(a)(iv)
	Field-Based Costs	  	Exhibit A
	First Extension Phase	  	3.3(b)(i)
	First Extension Option	  	3.3(b)(i)
	First Picking Party	  	3.7(b)(ii)
	FTC	  	3.6(e)(iv)(B)
	FTE	  	Exhibit A
	FTE Rate	  	Exhibit A
	Global Development Costs	  	Exhibit A
	Global Safety Database	  	5.3
	Global Study	  	Exhibit A
	HHMI	  	15.12
	HSR Act	  	3.6(e)(iii)(C)

  
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	 DEFINITION
	  	SECTION
	IND Amount	  	9.3(a)(i)
	Initial Phase	  	3.3(a)
	Invalidity Claim	  	10.4(b)
	JCC	  	2.1
	JDC	  	2.1
	Joint Inventions	  	10.1(c)
	Joint Patents	  	10.1(c)
	JRC	  	2.1
	JSC	  	2.1
	Licensing Opportunity	  	3.10(d)
	Major Pharmaceutical Company	  	11.3(b)(ii)(E)
	Manufacturing Costs	  	Exhibit A
	Manufacturing Scale-Up Costs	  	Exhibit A
	Net Sales	  	Exhibit A
	Non-Breaching Party	  	14.2(b)(i)
	Option Term	  	3.3(d)
	Out-of-Pocket Costs	  	Exhibit A
	Partnered Programs	  	8.8(a)(C)
	Payments	  	9.11(a)
	Pharmacovigilance Agreement	  	5.3
	Pick or Picked Validated Program	  	3.7(b)
	Phase I Amount	  	9.3(a)(ii)
	Post-Option Extension	  	3.3(d)
	Receiving Party	  	11.1
	Redacted Version	  	11.3(b)(i)
	Regulatory Interactions	  	5.1(h)
	Regulatory Expenses	  	Exhibit A
	Released Target	  	3.5(b)
	Responsible Party	  	10.3(c)
	Royalty Term	  	9.7(f)(i)
	Second Extension Option	  	3.3(c)
	Second Extension Option Trigger Event	  	3.3(b)(i)(A)
	Second Extension Phase	  	3.3(c)
	Second Generation Product	  	9.6(a)(iv)
	SPA	  	3.10(e)
	Supply Agreement	  	4.1(c)(i)
	Term	  	14.1(a)
	Territory-Specific Development Costs	  	Exhibit A
	Third Party Activity	  	15.4(b)
	Third Party Contractors	  	8.4(a)(ii)
	Third-Party Infringement	  	10.3(a)
	[**] Agreement	  	Schedule 1.53
	Unilateral In-License	  	9.7(g)(ii)(E)
	Validated Program Discovery Costs	  	3.7(a)

  
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 Article II 
 Governance 
 Section 2.1 General. The Parties shall establish
(a) a Joint Steering Committee (“JSC”) to oversee and coordinate the overall conduct of all Programs hereunder; (b) a Joint Research Committee (“JRC”) to oversee and coordinate discovery, research and
pre-clinical Development activities with respect to each Discovery Program during the applicable Discovery Term; (c) a Joint Development Committee (“JDC”) for each Licensed Program to oversee and coordinate clinical Development
(including Manufacturing of clinical supply) of Licensed Compounds under such Licensed Program; and (d) a Joint Commercialization Committee (“JCC”) to oversee the Commercialization (including Manufacturing of commercial supply)
of Licensed Products (the JSC, the JRC, the JDC and the JCC shall each be referred to as a “Committee”). Each Committee may from time to time establish subcommittees or project teams to handle matters within the scope of its
authority. 
 Section 2.2 Joint Steering Committee. 

(a) Establishment. Within forty-five (45) days following the Effective Date, Agios and Celgene shall establish the JSC. The
JSC shall have oversight over each Discovery Program and each Licensed Compound (and the related Program). 
 (b) Duties.
The JSC shall: 
 (i) oversee and coordinate the conduct of all Programs and related matters within the responsibilities of the
Committees hereunder; 
 (ii) by Mutual Consent provide strategic guidance, and coordinate efforts between the Parties, with
respect to any Publications and by Mutual Consent approve requests for Publication, from either Party, according to the Publication Guidelines and Section 11.4 hereof; 
 (iii) serve as a forum for dispute resolution in accordance with Section 2.8 with respect to matters that are not resolved at the JRC, JDC or JCC; and 

(iv) perform such other duties as are specifically assigned to the JSC under this Agreement. 

Section 2.3 Joint Research Committee. 
 (a) Establishment. Within forty-five (45) days following the Effective Date, Agios and Celgene shall establish the JRC. The JRC shall have oversight over each Discovery Program during the
applicable Discovery Term. 
 (b) Duties. The JRC shall: 

(i) approve the initial Discovery Plan and review and approve any proposed updates or amendments to the Discovery Plan; 

  
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 (ii) approve the addition and removal of Collaboration Targets from the Target List by
Mutual Consent or at the request of Celgene in accordance with Section 3.5; 
 (iii) establish and update a prioritization
of Collaboration Targets for validation work; 
 (iv) oversee, review, coordinate and provide strategic guidance to the Parties
with respect to the conduct of each Discovery Program, including assigning activities to be performed by each Party under such Discovery Program (except that Celgene shall not be assigned any such activities without its prior written consent);

 (v) review proposed modifications to the Clinical Candidate Guidelines, baseline criteria for determining whether a compound
is Active, and Validation Criteria for each Discovery Program, and approve modifications to such guidelines and criteria by Mutual Consent; 
 (vi) review existing prioritization and allocation of resources among Validated Programs; 
 (vii) evaluate validation work conducted with respect to a Collaboration Target against the Validation Criteria for each Discovery Program and by Mutual Consent determine whether such Discovery Program is
a Validated Program; 
 (viii) evaluate discovery research work conducted with respect to a Collaboration Target against the
Clinical Candidate Guidelines for each Validated Program and determine whether progress is sufficient to advance to a short list of potential Development Candidates; 
 (ix) review each Development Candidate nomination package, determine whether a nomination meets the Clinical Candidate Criteria and by Mutual Consent confirm nominations for Development Candidates;

 (x) manage the initial Development of any biomarkers; 

(xi) in conjunction with the JDC and JCC, approve for which Target Indication(s) in the Oncology Field the first IND should be filed for
Collaboration Compounds (with Celgene having the right to decide any unresolved matter, except with respect to Independent Compounds); 
 (xii) in conjunction with the JDC and JCC, discuss additional Indications for Development; 
 (xiii) oversee and coordinate the Parties’ activities with respect to the Manufacture of pre-clinical and clinical supply of Collaboration Compounds, Licensed Compounds and/or Licensed Products (to
the extent the JDC has not yet been formed); 
 (xiv) provide a forum for the Parties (A) to discuss the objectives of
each Discovery Program; and (B) to exchange and review scientific information and data relating to the activities being conducted under each Discovery Program, including the exchange and review of data, Collaboration Compound structures and the
results of each Discovery Program; and 
 (xv) perform such other duties as are specifically assigned to the JRC under this
Agreement. 

  
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 (c) JRC Project Teams. Within [**] days following a determination that a
Collaboration Target has met the Validation Criteria, the JRC shall establish a project team for such Validated Program associated with such Collaboration Target. At Celgene’s election, each project team shall have at least two representatives
from Celgene, which representatives may be members of more than one project team. At Agios’ election, each project team shall have at least two representatives from Agios, which representatives may be members of more than one project team.

 Section 2.4 Joint Development Committee. 

(a) Establishment. Within [**] days following the delivery to the JRC of the first data package for a potential Development
Candidate to be selected at the DC Selection Stage pursuant to Section 3.6(b), Agios and Celgene shall establish the JDC. The JDC shall have oversight over each Split Compound (and the related Split Program), Licensed Compound in a
Co-Commercialized Program (and the related Co-Commercialized Program), and Buy-In Compound (and the related Buy-In Program). 

(b) Duties. The JDC shall: 
 (i) review and approve the applicable Development Plan (and applicable Development Budget) for each Licensed Program and any proposed updates or amendments thereto, and propose revisions to each
Development Plan (and applicable Development Budget) as needed; 
 (ii) after the JRC’s approval of the Target Indication
for the first IND and after the Option Exercise Date with respect to a particular Program, in conjunction with the JCC, approve for which Target Indication(s) in the Field INDs should be filed for Collaboration Compounds (with Celgene having the
right to decide any unresolved matter, except with respect to Independent Compounds, Buy-In Compounds for which Agios is the Lead Party or with respect to Split Compounds); 
 (iii) manage the Development of any Companion Diagnostics, including, following the initial oversight by the JRC, the Development of any biomarkers; 

(iv) review proposed modifications to the Phase I MAD Protocol Criteria and the Phase I Report Criteria and approve modifications to
such Phase I MAD Protocol Criteria and the Phase I Report Criteria by Mutual Consent; 
 (v) oversee, review, coordinate and
provide strategic guidance to the Parties on the worldwide Development of each Licensed Compound and Licensed Product, including assigning activities to be performed by each Party under a Licensed Program (except that Celgene shall not be assigned
any such activities without its prior written consent); 

  
 - 25 -

 (vi) subject to and within the parameters of each Development Plan (A) oversee and
approve the implementation of the Development Plan (including evaluation of clinical trial protocols and review of the conduct of clinical trials conducted pursuant to the Development Plan); and (B) oversee and approve the overall strategy and
positioning of all material submissions and filings with the applicable Regulatory Authorities; 
 (vii) oversee, as
applicable, the transfer of Development responsibility and activities from Agios to Celgene hereunder; 
 (viii) oversee,
review and coordinate the studies required for the preparation of the CMC section of an IND for filing with Regulatory Authorities for each Licensed Compound, including studies relating to analytical methods and purity analysis, and (in conjunction
with the JCC) formulation and Manufacturing development studies, together with associated regulatory activities; 
 (ix)
oversee, review and coordinate process research and development activities (including, in conjunction with the JCC, Manufacturing and formulation development activities); 
 (x) in conjunction with the JCC, oversee and coordinate the Parties’ activities with respect to the Manufacture of pre-clinical and clinical supply of Collaboration Compounds, Licensed Compounds
and/or Licensed Products; and 
 (xi) perform such other duties as are specifically assigned to the JDC under this Agreement.

 Section 2.5 Joint Commercialization Committee. Upon initiation of the [**] Study with respect to a Split Program,
Co-Commercialized Program or Buy-In Program, Agios and Celgene shall establish the JCC. The JCC shall have oversight over (x) each Split Product (and the related Program), (y) each Co-Commercialized Product (and the related Program), to
the extent set forth in clauses (a)(v) through (a)(xi) below, and (z) each Buy-In Product (and the related Program), to the extent set forth in clauses (a)(vii) through (a)(xi) below. 

(a) Duties: The JCC shall: 
 (i) oversee, review and coordinate the Commercialization of Split Products between the Parties in their respective territories; 
 (ii) develop and oversee a brand strategy for Split Products; 
 (iii) set overall
strategic objectives and plans related to Commercialization of Split Products on a global basis; 

  
 - 26 -

 (iv) review and approve the annual global Commercialization Plan for each Split Product,
and any updates or amendments thereto, and propose revisions to each Commercialization Plan as needed; 
 (v) review and
approve the annual Commercialization Plan for the US Territory for each Co-Commercialized Product with respect to Commercialization Activities assigned to each Party pursuant to Article VI, and oversee, review and coordinate such activities;

 (vi) review and approve all sales, promotional and communication materials for Co-Commercialized Products in the US
Territory and for Split Products worldwide; 
 (vii) provide a forum for the Parties to share information with respect to the
Commercialization of Licensed Products worldwide; 
 (viii) review and provide strategic guidance on all Commercialization
activities and plans with respect to Licensed Products worldwide; 
 (ix) subject to and within the parameters of the
Commercialization Plan, oversee the implementation of such plan; 
 (x) oversee and coordinate the Parties’ activities
with respect to the Manufacture of commercial supply of Licensed Compounds and/or Licensed Products; and 
 (xi) perform such
other duties as are specifically assigned to the JCC under this Agreement. 
 Section 2.6 Alliance Managers. Each
Party shall appoint one designated representative to serve as an alliance manager (“Alliance Manager”) with responsibility for being the primary point of contact between the Parties with respect to the Collaboration. The Alliance
Managers shall attend JSC, JRC, JDC and JCC meetings, as necessary, as non-voting observers. Nothing herein shall prohibit a Party from appointing its Alliance Manager as a member of one or more Committees. 

Section 2.7 General Committee Membership and Procedures. 

(a) Committee Membership. Each Committee shall each be composed of three (3) representatives from each of Celgene and Agios,
each of which representatives shall be of the seniority and experience appropriate for service on the applicable Committee in light of the functions, responsibilities and authority of such Committee and the status of Development and
Commercialization of the Licensed Products being pursued hereunder from time to time. Each Party may replace any of its representatives on any Committee at any time with prior written notice to the other Party; provided that such replacement
meets this standard. Each Committee shall appoint a chairperson from among its members, with the chairperson for the JRC being a representative from [**], the chairperson for the JDC and JCC being a representative from [**], and the chairperson for
the JSC being a representative from [**] until such time as [**]. Within 15 days following each Committee meeting, the chairperson of each Committee shall circulate to all Committee members a draft of the minutes of such meeting. The Committee shall
then approve, by Mutual Consent, such minutes within 15 days following circulation. 

  
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 (b) Committee Meetings. 

(i) The JSC and JRC shall hold an initial joint meeting within [**] days of the Effective Date or as otherwise agreed by the Parties.
The JDC and the JCC shall meet at the time such Committees are formed in accordance with Section 2.4 and Section 2.5, respectively. Thereafter, each Committee shall meet at least once every Calendar Quarter, unless the respective Committee
members otherwise agree. All Committee meetings shall be conducted in person, unless otherwise determined by the applicable Committee by Mutual Consent. 
 (ii) Each project team of the JRC formed pursuant to Section 2.3(c) shall meet [**], unless the applicable project team agrees otherwise. Such meetings shall be conducted by telephone, video
conference or in person, as determined by the applicable project team. 
 (iii) Unless otherwise agreed by the Parties, all
in-person meetings for each Committee shall be held on an alternating basis between Agios’ facilities in Cambridge, Massachusetts (or such future location as Agios’ facilities may move to) and Celgene’s facilities in Summit, New
Jersey or San Diego, California, as determined by Celgene, (or such future location as Celgene’s facilities may move to). A reasonable number of other representatives of a Party may attend any Committee meeting as non-voting observers;
provided that such additional representatives are under obligations of confidentiality and non-use applicable to the Confidential Information of the other Party that are at least as stringent as those set forth in Article XI; and provided
further that the Parties, reasonably in advance of the applicable Committee meeting approve the list of non-voting observers to attend such meeting. Each Party shall be responsible for all of its own personnel and travel costs and expenses
relating to participation in Committee meetings. 
 (c) Dissolution. The JSC, JRC, JDC and JCC, as applicable, shall be
dissolved and its activities and authority terminated upon the earliest of (i) with respect to the JRC, the end of the Option Term (or, if applicable, with respect to any Extended Program, the end of the Post-Option Extension), (ii) with
respect to the JDC, when no Licensed Compounds that are subject to JDC oversight are being Developed under any Licensed Program, (iii) with respect to the JCC, until the end of the Royalty Term for all Split Products and Co-Commercialized
Products in the US Territory, (iv) a Change of Control to the extent provided in Section 15.5, and (v) the termination or expiration of this Agreement in its entirety. 

Section 2.8 Decision-Making. 
 (a) Committee; Referral to JSC and to Executive Officers. All decisions of a Committee shall be made by unanimous vote, with each Party’s Representatives collectively having one (1) vote,
and shall be set forth in minutes approved by both Parties. Upon [**] Business Days prior written notice, either Party may convene a special meeting of a Committee for the purpose of resolving any failure to reach agreement on a matter within the
scope of the authority and responsibility of such Committee. No Committee shall have the authority to 

  
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resolve any dispute involving the breach or alleged breach of this Agreement or to amend or modify this Agreement or the Parties’ respective rights and obligations hereunder. If the JRC, JDC
or JCC is unable to reach agreement on any matter so referred to it for resolution by one or both Parties within [**] Business Days after the matter is so referred to it, such matter shall be referred to the JSC for resolution. If the JSC is unable
to reach agreement on any matter within [**] Business Days after the matter is referred to it or first considered by it, such matter shall be referred to the Executive Officers for resolution. 

(b) Decision-Making Authority. If the matter is not resolved by the Executive Officers after in-person discussions between such
Executive Officers within [**] Business Days after referral to the Executive Officers, then, on a Program-by-Program basis, subject to Sections 2.8(c), 2.9, 3.10(e), 15.5(a)(iv)(B), and 15.5(a)(v)(D)(1) and except as otherwise provided herein, [**]
at such time for such Program shall have the right to decide the unresolved matter; provided that [**] shall give due consideration to any comments or preferences expressed by the other Party with respect to such matter. 

(c) Exceptions. Notwithstanding the foregoing, neither Party shall have the right to finally resolve a dispute pursuant to
Section 2.8(b): 
 (i) in a manner that excuses such Party from any of its obligations specifically enumerated under this
Agreement; 
 (ii) in a manner that negates any consent rights or other rights specifically allocated to the other Party under
this Agreement; 
 (iii) to resolve any dispute involving the breach or alleged breach of this Agreement; 

(iv) to amend or modify any Development Plan or the Development Budget with respect to a Buy-In Program or a Split Program (or the
Commercialization Plan and related budget to the extent described in Section 6.1(c)(i)), without the other Party’s consent if it would require the other Party to expend additional resources, whether internal or external, including capital
expenditures; provided that such consent shall not be required for amendments or modifications that are part of the annual updates for a Development Plan or Development Budget (or such Commercialization Plan and related budget);

 (v) to resolve any dispute regarding whether a milestone event set forth in Section 9.6 has been achieved; 

(vi) to resolve a matter if the provisions of this Agreement specify that unanimous or mutual agreement of the Parties, including Mutual
Consent, is required for such matter; or 
 (vii) in a manner that would require the other Party to perform any act that is
inconsistent with any Law. 

  
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 Section 2.9 Dispute Resolution for Certain Decisions by Mutual Consent. If a
Committee cannot agree by Mutual Consent with respect to any Arbitrable Matter, after referring such matter to the Executive Officers pursuant to Sections 2.8(a) and 2.8(b), then either Party may request that such disputes be resolved by binding
arbitration in accordance with the expedited procedures applicable to the Commercial Arbitration Rules of the American Arbitration Association (the “AAA”) and the provisions of this Section 2.9. 

(a) The Party desiring to initiate an arbitration proceeding with respect to an Arbitrable Matter will send a written notice to the other
Party requesting the commencement of the arbitration proceeding and specifying the issue to be resolved. Within [**] days from the date such notice is sent, the Parties shall negotiate in good faith to appoint a mutually acceptable independent
person, with scientific, technical, and regulatory experience with respect to the development of pharmaceutical products in the Field necessary to resolve such dispute and with availability to comply with the time periods in this Section 2.9
(an “Expert”). If the Parties fail to choose an Expert within the foregoing time period, the AAA shall choose an Expert (with such experience and availability) on behalf of the Parties within [**] days of receipt of written request
by a Party to the AAA. Disputes about arbitration procedure will be resolved by the Expert or, failing agreement, by the AAA in New York, New York. Unless otherwise agreed by the Parties, the arbitration proceedings will be conducted in New York,
New York. The fees and costs of the Expert and the AAA, if applicable, shall be shared equally by the Parties. 
 (b) Within
[**] days of the selection of the Expert, each Party shall simultaneously deliver to the Expert and the other Party a written statement: (i) stating each of the issues that is the subject of the Arbitrable Matter dispute, (ii) setting
forth such Party’s position on each issue in dispute, and (iii) setting forth such Party’s final position with respect to each such issue. With such statement, each Party may also submit supporting documentation, if any, for such
Party’s final position. Each Party shall have [**] days from receipt of the other Party’s submission to submit to the Expert and the other Party a written response thereto, which may include any scientific and technical information in
support thereof. The Expert shall have the right to meet with the Parties, either alone or together, as necessary to make a determination. 
 (c) In resolving the dispute, the Expert will have no authority to make a decision on any issue other than by selecting the final position of one of the Parties. An arbitration decision with respect to
the Arbitrable Matter will be rendered in writing within [**] days of the designation of the Expert, which award will be final and binding on the Parties and will be deemed enforceable in any court having concurrent jurisdiction of the subject
matter hereof and the Parties. In selecting the final position of one of the Parties, the arbitrator will have the authority to grant specific performance; provided that the Expert will have no authority to award damages, and each Party
irrevocably waives any claim to recover such damages. 
 (d) For all purposes under this Agreement, any decision made pursuant
to this Section 2.9 shall be deemed to be the decision of the Parties, or the applicable Committee, by Mutual Consent. 

(e) The dispute resolution in this Section 2.9 shall apply only to the following matters if the Parties or the applicable Committee
cannot agree by Mutual Consent (“Arbitrable Matters”): (i) whether [**] and, therefore, whether the nomination thereof as a Development Candidate is confirmed; (ii) whether [**]; and (iii) whether [**]. 

  
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 Section 2.10 Scope of Governance. Notwithstanding the creation of each of the
Committees, each Party shall retain the rights, powers and discretion granted to it under this Agreement, and no Committee shall be delegated or vested with rights, powers or discretion unless such delegation or vesting is expressly provided herein,
or the Parties expressly so agree in writing. It is understood and agreed that issues to be formally decided by a particular Committee are only those specific issues that are expressly provided in this Agreement to be decided by such Committee, as
applicable. 
 Section 2.11 Agios Right to Discontinue Participation. Notwithstanding anything in this Article II to
the contrary, at any time after the end of the Option Term (or, if applicable, with respect to any Extended Program, after the end of any Post-Option Extension) hereunder, Agios shall have the right to discontinue its participation in, and to not
appoint members to, any Committee or any subcommittee or project team other than to the JRC or any subcommittee or project team of the JRC. If Agios discontinues participation in, or does not appoint members to, any Committee or any subcommittee or
project team, (a) it shall not be a breach of this Agreement; (b) no consideration shall be required to be returned; (c) unless and until such members are appointed, Celgene may unilaterally discharge the roles of such Committee,
subcommittee or project team, as applicable, for which members were not appointed, including making in Celgene’s sole discretion all decisions of such Committee, subcommittee, or project team, including decisions requiring Mutual Consent;
provided that Celgene shall not unilaterally discharge the roles of such Committee, subcommittee or project team, as applicable, as permitted under this Article II unless Agios has not appointed any members within [**] days after
Celgene has completed its appointment of its members; and (d) Agios shall abide by all decisions made by Celgene on behalf of the applicable Committee, subcommittee, or project team and shall continue to perform its obligations hereunder. If
Agios thereafter appoints members to a Committee, subcommittee or project team, Celgene shall no longer have the unilateral right to discharge the role of such Committee, subcommittee or project team, as applicable; provided that such
Committee, subcommittee or project team shall not thereafter repeal prior decisions made by Celgene when Celgene was unilaterally discharging such role. 
 Article III 
 Discovery and Development Collaboration 

Section 3.1 Primary Goals and General Responsibilities of Discovery Program. 

(a) Discovery Program. During the Option Term, Agios shall be responsible for conducting discovery research activities with the
principal goals of (i) identifying and validating Collaboration Targets in accordance with the Validation Criteria, (ii) identifying and discovering Collaboration Compounds that either activate or inhibit through direct binding to a
Collaboration Target, (iii) nominating Development Candidates, and (iv) characterizing, optimizing and supporting the pre-clinical Development of Development Candidates, including IND-Enabling Studies; provided that, if
Celgene and Agios both consent, Celgene may also be assigned responsibility for some of the foregoing discovery research activities at Agios’ sole expense. 

  
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 (b) Updates. During the Discovery Term, each Party shall provide the other Party with
regular quarterly written reports on such Party’s activities relating to the Discovery Program, including a summary of results, information, and data generated, any activities planned with respect to Development going forward (including, for
example, updates regarding regulatory matters and Development activities for the next Calendar Quarter), challenges anticipated and updates regarding intellectual property issues (including a disclosure of Collaboration Intellectual Property
developed or generated since the last written report) relating to each Discovery Program. Such written reports may be discussed by telephone or video-conference, or may be provided at each JRC, JDC or JCC meeting, as applicable; provided
that, reasonably in advance of the meeting of such Committee, the Party providing the written report will deliver to the other Party an agenda for the meeting setting forth what will be discussed during the meeting. The Party receiving such
written report shall have the right to reasonably request, and to receive in a timely manner clarifications and answers to, questions with respect to such reports. 
 Section 3.2 Option. Subject to the terms and conditions of this Agreement, Agios hereby grants to Celgene the exclusive right, exercisable, at Celgene’s sole discretion, in accordance
with Section 3.6, to elect, with respect to any Optionable Program, on an Optionable Program-by-Optionable Program basis, to obtain an exclusive license under Section 8.2 to Develop, Commercialize, and Manufacture the applicable Licensed
Compounds and Licensed Products under such Optionable Program under the terms and conditions set forth in this Agreement (each such right to elect, a “Celgene Program Option”). 

Section 3.3 Option Term. 
 (a) Initial Phase. Except as otherwise set forth in Section 3.3(b)(iii) below, the initial phase of the Collaboration shall commence on the Effective Date and end three (3) years following the
Effective Date (the “Initial Phase”). 
 (b) First Extension Phase. 

(i) Celgene shall have the right to elect to extend the Option Term following the Initial Phase (“First Extension
Option”) for a period (the “First Extension Phase”) ending upon the earlier of: 
 (A) the date
following the Effective Date on which (1) FPD of [**] Collaboration Compounds has occurred and (2) the JRC has confirmed the nomination of [**] Development Candidate (the “Second Extension Option Trigger Event”); and

 (B) two (2) years following the end of the Initial Phase. 

(ii) Celgene may exercise the First Extension Option by (x) providing written notice to Agios of such election; and (y) paying
to Agios [**] Dollars (US$[**]). If Celgene elects to exercise such option, such notice and payment shall be made as follows: 

(A) Unless Section 3.3(b)(ii)(B) or 3.3(b)(ii)(C) below applies, if Celgene elects the First Extension Option, Celgene must provide
such exercise notice [**]months prior to the end of the Initial Phase and must pay such $[**] within [**] days following the end of the Initial Phase; provided that such notice shall not have to be given prior to [**] or such payment
made prior to [**] days following [**]. 

  
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 (B) If Agios has not nominated [**] Development Candidates that are confirmed by the JRC at
least [**] months prior to the end of the Initial Phase but [**] Development Candidates are so confirmed prior to the end of the Initial Phase, then, if Celgene elects the First Extension Option, Celgene must provide such exercise notice within [**]
months following such confirmation of both Development Candidates and must pay such $[**] within [**] days following the later of (1) delivery of such notice and (2) the end of the Initial Phase. 

(C) If Celgene elects to have Agios continue Development of the Development Candidates into the Extended Initial Phase in accordance
with Section 3.3(b)(iii), then, if Celgene elects the First Extension Option, Celgene must provide such exercise notice on or prior to the date that is [**] days following the end of the Extended Initial Phase and must pay such $[**] days
following delivery of such notice. 
 (iii) Notwithstanding anything in this Section 3.3 to the contrary, if Agios
believes that Agios will not be able to nominate at least [**] Development Candidates that meet the Clinical Candidate Guidelines by the end of the Initial Phase, Agios shall notify Celgene thereof (to the extent practicable, by no later than [**]
months prior to the end of the Initial Phase). If the JRC has not confirmed at least [**] Development Candidates nominated by Agios that meet the Clinical Candidate Criteria within the Initial Phase, then Celgene shall have the right to either
exercise its First Extension Option as provided in Section 3.3(b)(ii)(A) or to have Agios continue Development following the end of the Initial Phase. If Celgene elects to have Agios continue Development, the Initial Phase shall be extended
until the earlier of (x) [**] following the end of the original three (3)-year Initial Phase and (y) such time as the JRC has confirmed the nomination of at least [**] Development Candidates that meet the Clinical Candidate Guidelines
following the Effective Date (the “Extended Initial Phase”). 
 (A) If Celgene elected to have Agios continue
Development through the Extended Initial Phase and the JRC confirms [**] Development Candidates nominated by Agios that meet the Clinical Candidate Guidelines by the end of the Extended Initial Phase, Celgene shall have the right to elect, in its
sole discretion (to be exercised in accordance with Section 3.3(b)(ii)(C)), to extend the Option Term following such Extended Initial Phase for the remainder of the First Extension Phase. If Celgene does not elect to extend the Option Term
through such remainder of the First Extension Phase, the Option Term shall expire at the end of such Extended Initial Phase and the picking mechanism set forth in Section 3.7 shall apply with respect to Validated Programs at such time.

 (B) If the JRC confirms [**] nominated by Agios that meets the Clinical Candidate Guidelines by the end of the Extended
Initial Phase, but fails to confirm the nomination of a [**] Development Candidate by the end of the Extended Initial Phase, Celgene shall have the right, in its sole discretion (to be exercised in accordance with Section 3.3(b)(ii)(C)), to
extend the Option Term following such Extended Initial Phase for the remainder of the First Extension Phase. If Celgene does not elect to extend the Option Term through such remainder of the First Extension Phase, the Option Term shall expire at the
end of such Extended Initial Phase and the picking mechanism set forth in Section 3.7 shall apply with respect to Validated Programs at such time; provided, however, that, notwithstanding anything in Section 3.7,
9.3(b) or 9.6(a) to the contrary, (1) Celgene shall be entitled to the first [**] Picks (including, if such Program has not reached the DC Selection Stage, [**]), and the Parties shall 

  
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then alternate turns (with [**] having the first turn) selecting [**] until all Validated Programs have been selected; (2) Celgene shall not be obligated to pay any Validated Program
Discovery Costs with respect to Celgene’s Picked Validated Program(s); and (3) Celgene shall be obligated to pay to Agios royalties as set forth in Section 9.7(d) but shall not be obligated to pay to Agios any of the milestone
payments set forth in Section 9.6(a), in each case, with respect to Licensed Compounds and Licensed Products under Celgene’s Picked Validated Program(s). 
 (C) If the JRC fails to confirm the nomination of any Development Candidate by the end of the Extended Initial Phase, Celgene shall have the right, in its sole discretion (to be exercised in accordance
with Section 3.3(b)(ii)(C)), to extend the Option Term following such Extended Initial Phase for the remainder of the First Extension Phase. If Celgene does not elect to extend the Option Term through such remainder of the First Extension
Phase, the Option Term shall expire at the end of such Extended Initial Phase and the picking mechanism set forth in Section 3.7 shall apply with respect to Validated Programs at such time; provided, however, that,
notwithstanding anything in Section 3.7, 9.3(b) or 9.6(a) to the contrary, (1) Celgene shall have the right to select all Validated Programs remaining in the Collaboration at such time (including, if such Program has not reached the DC
Selection Stage, [**]); (2) Celgene shall not be obligated to pay any Validated Program Discovery Costs with respect to Celgene’s Picked Validated Program(s); and (3) Celgene shall be obligated to pay to Agios royalties as set forth
in Section 9.7(d) but shall not be obligated to pay to Agios any of the milestone payments set forth in Section 9.6(a), in each case, with respect to Licensed Compounds and Licensed Products under such Picked Validated Program(s).

 (D) For clarity, if Celgene elects to extend the Option Term following such Extended Initial Phase for the remainder of the
First Extension Phase, such First Extension Phase shall extend until the earlier of (1) the Second Extension Option Trigger Event and (2) two (2) years following the end of the original three (3)-year Initial Phase. 

(E) For purposes of clarity, if the JRC confirms [**] Development Candidates nominated by Agios in the same Calendar Year prior to the
end of the Extended Initial Phase, Agios shall be deemed to have met its obligation under this Section 3.3(b)(iii) to nominate at least [**] Development Candidates that the JRC confirms meet the Clinical Candidate Guidelines by the end of the
Extended Initial Phase irrespective of whether Celgene defers (or has the right to defer) making the DC Commitment with respect to either such Development Candidate pursuant to Section 3.6(d) below. In addition, if, during the Initial Phase
(or, if applicable, the Extended Initial Phase): 
 (1) Celgene elects to unilaterally remove a Target from the Target List
pursuant to Section 3.5(b) after a Development Candidate directed to such Target had been nominated by Agios and the JRC has not determined that such Development Candidate does not meet the Clinical Candidate Guidelines (as described in
Section 3.6(b)(v)), 
 (2) Celgene elects to unilaterally remove a Target from the Target List within the [**]-year period
prior to when a Development Candidate directed to such Target would have been nominated by Agios (as contemplated under the Discovery Plan); provided that the lead optimization chemical series in the Discovery Program related to such
Target has demonstrated [**], 

  
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 (3) Celgene decides to exercise its Celgene Program Option or to take a license early
pursuant to Section 3.6(c) or Section 15.5, as applicable, to a Discovery Program under which a Development Candidate had been nominated by Agios prior to such early exercise, 

(4) Celgene exercises its right pursuant to Section 14.2(a) to terminate for convenience any Discovery Program under which a
Development Candidate had been nominated by Agios prior to such termination and the JRC has not determined that such Development Candidate does not meet the Clinical Candidate Guidelines (as described in Section 3.6(b)(v)), or 

(5) Celgene terminates a Discovery Program for convenience within the [**]-year period prior to when a Development Candidate would have
been nominated by Agios under such Discovery Program (as contemplated under the Discovery Plan); provided that the lead optimization chemical series in the Discovery Program related to such Target has demonstrated [**], 

then, in each of the foregoing cases, such nominated (or would-be nominated, as applicable) Development Candidate shall be counted as a Development
Candidate that has been confirmed by the JRC as meeting the Clinical Candidate Guidelines for purposes of determining whether Agios has met its obligation under this Section 3.3(b) to nominate at least [**] Development Candidates that the JRC
confirms meet the Clinical Candidate Guidelines. 
 (c) Second Extension Option. Celgene shall have the right to elect to
extend the Option Term beyond the First Extension Phase (“Second Extension Option”) for an additional [**] months following the end of the First Extension Phase (“Second Extension Phase”). Celgene may exercise the
Second Extension Option by (i) providing written notice to Agios of such election, and (ii) paying to Agios [**] Dollars (US$[**]) within [**] days following the end of the First Extension Phase. Such written notice shall be provided at
least [**] months prior to the end of the First Extension Phase (or within [**] days following the Second Extension Option Trigger Event, as applicable); provided that, if the Parties enter into the Extended Initial Phase and such
Extended Initial Phase continues until [**] following the end of the original Initial Phase, then such notice need not be provided until at least [**] months prior to the end of the First Extension Phase. 

(d) Option Term. The “Option Term” shall refer to the period commencing on the Effective Date and ending upon the
earliest of (i) the expiration of the Initial Phase (or Extended Initial Phase, if applicable), if Celgene does not exercise the First Extension Option; (ii) the expiration of the First Extension Phase, if Celgene exercises the First
Extension Option but does not exercise the Second Extension Option; and (iii) the expiration of the Second Extension Phase, if Celgene exercises the Second Extension Option; provided that, notwithstanding the foregoing, if on the
date of the events described in the foregoing clauses (i), (ii), and (iii), DC Selection Stage for a Development Candidate has been reached pursuant to Section 3.6(b)(ii) during the Option Term and the Celgene Program Option for such
Development Candidate has not expired or been rejected, waived or not exercised within the applicable exercise period, then Celgene’s right to exercise such Celgene Program Option will continue for such Development Candidate (and associated
Discovery Program) beyond the end 

  
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of the Option Term as set forth in Section 3.6 until such Celgene Program Option has been exercised or been rejected or waived (such extended period, the “Post-Option
Extension,” and the Discovery Program associated with such Development Candidate, the “Extended Program”). For purposes of clarity, except as provided in the proviso in the prior sentence or in Section 3.3(b)(iii), if
Celgene does not provide written notice of election to Agios in a timely manner, the Option Term shall expire as of the end of the then-current Initial Phase (or Extended Initial Phase, if applicable), First Extension Phase or Second Extension
Phase, as the case may be. 
 Section 3.4 Discovery Plan. Within thirty (30) days following the Effective Date,
Agios shall prepare and deliver to Celgene and, within fifteen (15) days after the establishment of the JRC, the JRC shall approve, a Discovery Plan (the “Discovery Plan”) which shall set forth the prioritization of
Collaboration Targets, initial validation work to be conducted with respect to Collaboration Targets, anticipated post-validation discovery research activities to be conducted under a Discovery Program, and the Party responsible for performance of
an activity (which shall be Agios unless both Agios and Celgene otherwise agree). Thereafter, the JRC shall approve updates to the Discovery Plan on a quarterly basis during the Option Term (or, if applicable, with respect to any Extended Program,
during any Post-Option Extension). 
 Section 3.5 Determination of Collaboration Targets During Option Term. As of
the Effective Date, the Parties have selected the initial Collaboration Targets (as set forth on Schedule 1.119) with respect to which the Parties shall conduct Discovery Programs under this Agreement. During the Discovery Term for each
Collaboration Target and the Discovery Program that is directed to such Collaboration Target, the Discovery Plan shall specify that the primary Target Indication for such Collaboration Target, and the Discovery Program shall be in the Oncology Field
(it being understood that after the Discovery Term, the Development Plan for any Licensed Program may specify other Target Indications outside of the Oncology Field). The Parties intend that the Target List be dynamic and that Collaboration Targets
will be prioritized on, added to, or removed from the Target List from time to time during the Option Term as available data and literature warrant to reflect the priorities of the Parties. At each JRC meeting, the JRC shall review, manage and
determine the prioritization of Collaboration Targets on the Target List, and of the corresponding Discovery Programs that are directed to such Collaboration Targets. Targets shall be added to the Target List at any time in accordance with
Section 3.5(a) below and shall be removed from the Target List at any time in accordance with Section 3.5(b). In furtherance of the foregoing, the following provisions shall apply: 

(a) Targets shall be added to the Target List pursuant to this Section 3.5(a). 

(i) During each [**] month period during the Option Term (with the first such period commencing on the Effective Date, the second such
period commencing on [**], and so forth), Agios will nominate, for inclusion on the Target List, at least [**] new Targets that meet the criteria set forth on Schedule 3.5(a). Such Target(s) shall be added to the Target List, unless Celgene
provides Agios written notice within [**] Business Days of Agios’ nomination that such Target is already subject to an ongoing and active discovery program at Celgene (or such program is being initiated and a Celgene project team has already
been formed) or under a collaboration with a Third Party, or is the subject of ongoing negotiations for a collaboration with a Third Party as evidenced by a bona fide term sheet (which may be redacted, including the identity of the Third Party), in
which case either (x) if such Target was nominated 

  
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during the Initial Phase, such Target shall not be included on the Target List, but the restriction set forth in Section 8.8(a)(ii) shall apply to Agios with respect to such Target (as if
such Target were on the Target List) until the end of the Initial Phase (at which point, Agios may again propose to include such Target on the Target List pursuant to this Section 3.5(a)(i)), or (y) if such Target was nominated after the
Initial Phase, Agios may elect to undertake an Independent Program for such Target, in which event the effects set forth in clauses (A) and (B) of Section 3.5(b)(i) below shall apply; provided that, within [**] following
such Independent Program being undertaken, Celgene may elect, by written notice to Agios, to treat such Independent Program as a Discovery Program hereunder, in which event such Independent Program shall become a Discovery Program. 

(ii) In addition, at any time during the Option Term, Celgene may nominate, for inclusion on the Target List, any Target that meets the
criteria set forth on Schedule 3.5(a); and such Target shall be added to the Target List unless Agios provides Celgene written notice within [**] Business Days of Celgene’s nomination that such Target is already subject to a Partnered
Program between Agios and a for-profit Third Party. 
 (b) The JRC (with [**] having the final say in the case of any dispute)
may also agree at any time to discontinue Collaboration activities with respect to a Collaboration Target and either remove such Collaboration Target from the Target List (including as a result of criteria such as those set forth on Schedule
3.5(b)) (a “Released Target”) or designate such Collaboration Target as an Independent Target with one Party continuing to independently Develop such Independent Target, and the associated Independent Program, in the Oncology
Field. A Released Target may later be added back onto the Target List in accordance with Section 3.5(a), at which time it shall no longer be deemed a “Released Target.” 

(i) If the JRC’s decision to remove a Collaboration Target from the Target List is not made by Mutual Consent but is made by [**]
having the final say, upon [**] written election to [**] within [**] days of the removal of such Collaboration Target, Agios may elect to undertake an Independent Program for such Target, in which event (A) such Collaboration Target shall
remain on the Target List for purposes of Agios’ Independent Program, and Agios’ Independent Program shall be subject to the terms of this Agreement, including this Section 3.5(b) and Section 3.11; and (B) such Target shall
not remain on the Target List for purposes of Celgene’s obligations hereunder, and notwithstanding Section 3.5(b)(ii), 8.8(b), or 8.8(c), Celgene shall not be restricted with respect to its activities on such Target unless and until
Celgene exercises its Buy-In Right with respect to Agios’ Independent Program on such Collaboration Target. 
 (ii) If the
JRC agrees by Mutual Consent to designate a Collaboration Target as an Independent Target, such Independent Target shall remain on the Target List, the Discovery Program directed to such Independent Target shall be referred to as an
“Independent Program,” the JRC by Mutual Consent shall determine which Party shall undertake the independent Development of such Independent Program, and the terms set forth in Section 3.11, and in this Section 3.5(b)(ii) shall
apply with respect to such Independent Program. In connection with designating a Discovery Program as an Independent Program, the JRC shall confirm which Collaboration Compounds shall be allocated to such Independent Program as “Independent
Compounds” in accordance with Sections 1.66 and 3.6(a)(i). 

  
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 (A) Unless and until the Buy-In Party’s Buy-In Right with respect to such Independent
Target has expired without the Buy-In Party exercising such right pursuant to Section 3.11, neither Party shall have any right (1) to enter into a collaboration or licensing agreement with a Third Party with respect to such Independent
Target or (2) to Develop, Manufacture, or Commercialize such Independent Target for any Indications outside the Oncology Field. 
 (B) Notwithstanding anything in Section 3.11 or this Section 3.5 to the contrary, if, prior to the Buy-In Party’s exercise of any applicable Buy-In Right with respect to an Independent
Program, the Party that is independently Developing such Independent Program no longer desires to pursue Development of such Independent Program in the Oncology Field, (1) such Party may discontinue such Independent Program, (2) all
Independent Compounds associated with such Independent Program shall be deemed Residual Program Compounds unless the Parties continue the Independent Program as a Discovery Program, and (3) except with respect to an Independent Program of
Agios’ described in Section 3.5(a)(i) or Section 3.5(b)(i), such Independent Target shall remain on the Target List unless the JRC (with Celgene having the final say in the case of any dispute) agrees to remove such Collaboration
Target from the Target List pursuant to this Section 3.5. 
 (iii) All Collaboration Compounds for any Discovery Program
or Independent Program directed to a Released Target shall remain in the Collaboration and shall become Residual Program Compounds, unless such Released Target is added back onto the Target List as set forth in this Section 3.5(b) (either in
whole with respect to both Parties or partially with respect to Agios), in which event the original Collaboration Compounds for the applicable Discovery Program or Independent Program shall go back on the Compound List for such Discovery Program or
Independent Program, to the extent not already allocated to another Program hereunder. 
 (c) The JRC by Mutual Consent (or the
JDC by Mutual Consent, to the extent that the JRC is no longer in effect) may elect to (i) limit a Collaboration Target to [**], or (ii) pursue separate Programs with respect to the same Collaboration Target. 

(d) For the avoidance of doubt, Targets subject to a Licensed Program shall remain on the Target List at the end of the Option Term
unless such Licensed Program is terminated pursuant to Article XIV. 
 Section 3.6 Discovery and Nomination of Compounds
for Licensed Program. 
 (a) Collaboration Compounds; Validation. 

(i) Agios shall propose, for approval by the JRC, the initial compounds for which initial discovery and other Development activities
shall be conducted hereunder. Unless the JRC (or the JDC, as applicable) agree by Mutual Consent that Celgene should contribute compounds, the compounds included in the Collaboration as Collaboration Compounds shall be compounds Controlled by Agios.
In addition, if the JRC (or the JDC, as applicable) agrees by Mutual Consent, the same Collaboration Compounds contained within the Pharmacophore assigned to one Program may be used as a “Development Candidate” or
Back-

  
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Up Compound assigned to another Program; provided that, if Celgene’s rights with respect to one Program terminate for any reason, including as a result of such Program becoming an
Agios Reverted Program, Celgene’s rights to such Collaboration Compound with respect to the second Program shall not terminate solely as a result of such first Program termination. Programs that are further along in Development shall have
priority to Collaboration Compounds (i.e., Licensed Programs shall have priority over Discovery Programs or Independent Programs), and Licensed Compounds and Discovery Programs shall have priority to Collaboration Compounds over Independent
Programs. 
 (ii) Subject to JRC Mutual Consent, either Party may propose additional compounds Controlled by such Party for
study in a Discovery Program, Independent Program or Licensed Program and, if such compounds are demonstrated to be Active against a Collaboration Target, such compounds shall be included in a Discovery Program, Independent Program or Licensed
Program, as applicable, directed to such Collaboration Target. The Discovery Plan or Development Plan, as applicable, shall be updated as necessary to reflect such work on such additional compounds. 

(iii) The JRC shall determine by Mutual Consent and maintain a list (the “Compound List”) (accessible to both Parties)
of those compounds identified in each Discovery Program or each Independent Program as meeting the criteria established by the JRC for designation as Collaboration Compounds, including identifying which compounds meet such criteria with respect to
more than one Program, and shall update such list from time to time by Mutual Consent by adding or removing compounds based on the results of the Parties’ Development activities relating thereto. The Parties intend that as compounds are
progressed towards achievement of the Clinical Candidate Guidelines under a Program, the Compound List shall become a narrower, more focused list in regards to such Program, with Collaboration Compounds removed from the Compound List becoming
Residual Program Compounds. 
 (iv) For each of the Validated Programs, prior to nomination in the course of lead optimization
toward a Development Candidate under Section 3.6(b), Agios shall conduct a freedom to operate analysis on both the applicable Collaboration Target and associated chemical matter, with a defined strategy on how that chemical matter will be
Developed with respect to chemical structure and intellectual property. Agios shall provide a summary of the analysis for review and approval of the JRC. 
 (b) Clinical Candidate Guidelines; Selection of Development Candidates at DC Selection Stage; Exercise of Celgene Program Option. 

(i) As of the Effective Date, the Parties have established clinical candidate guidelines, attached hereto as Schedule 3.6(b) (the
“Clinical Candidate Guidelines”), which Clinical Candidate Guidelines, if met, would indicate the suitability of a Collaboration Compound for advancement into IND-Enabling Studies under a Discovery Program, including demonstration
of mechanism-based cell growth inhibition, chemical properties as defined in the Clinical Candidate Guidelines and non-clinical pharmacokinetic, pharmacodynamic, safety and efficacy criteria. Such Clinical Candidate Guidelines may be amended upon
mutual written agreement of the Parties or subsequent Clinical Candidate Guidelines may be agreed in writing by the Parties and attached to this Agreement from time to time as appropriate. 

  
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 (ii) Based upon the Clinical Candidate Guidelines and the results of Development activities
with respect to a Discovery Program, Agios may nominate a Collaboration Compound directed to the Collaboration Target that is the subject of such Discovery Program as a Development Candidate, by providing written notice thereof to Celgene and the
JRC. Such notice shall be accompanied by a package of all relevant data with respect to such Collaboration Compound, including relevant chemistry, biology, in vitro and in vivo pharmacology, drug metabolism and pharmacokinetics (DMPK) and pilot
toxicology, and an initial Development Plan (with Development Budget) for such Discovery Program separated by the US Territory and the ROW Territory and including proposed Global Studies and other global Development activities. As part of the
Development Candidate nomination, the package must also set forth at least one Back-Up Compound associated with such Development Candidate (which is not already allocated to another Program under this Agreement), which Back-Up Compound(s) shall have
been tested for purposes of comparison with the proposed Development Candidate. The JRC by Mutual Consent shall have [**] days following such nomination by Agios to confirm such nomination (the stage of Development characterized by JRC’s
confirmation of such nomination shall be referred to as the “DC Selection Stage”); provided that, within [**] days following such nomination, Celgene or the JRC may reasonably request that Agios provide additional information
and access to records (to the extent available to Agios at such time and not yet disclosed to the JRC as part of the regular updates under Section 3.1(b)) with respect to such Collaboration Compound and with respect to other Collaboration
Compounds directed against other Collaboration Targets under Validated Programs that have not yet reached the DC Selection Stage, or are in preclinical Development, in which event the JRC’s [**]-day period for confirming such nomination shall
not begin to run until such information and access have been provided; provided further that, on a Development Candidate-by-Development Candidate basis, Celgene may waive the application of the Clinical Candidate Guidelines, in
whole or in part, to a nominated Development Candidate in order to enable the JRC to confirm such Development Candidate hereunder. For clarity, in connection with the nomination and confirmation of a Development Candidate, all references to the
“Development Candidate” nominated and confirmed as a Development Candidate pursuant to this Section 3.6(b) shall refer to the [**] that meets the Clinical Candidate Guidelines nominated by Agios, together with at least [**], and,
after Celgene’s exercise of the Celgene Program Option, all references to the “Development Candidate” so nominated and confirmed shall include all compounds set forth in clauses (a), (b), (c) and (d) of Section 1.47
unless the context requires otherwise. 
 (iii) If the JRC confirms the nomination of a Collaboration Compound as a Development
Candidate, Celgene shall have [**] days following such confirmation to designate such nominated Development Candidate (and the associated Discovery Program) for further Development (on a Discovery Program-by-Discovery Program basis, a “DC
Commitment”), as follows: 
 (A) If Celgene makes such DC Commitment, such nominated Development Candidate shall be
deemed a “Development Candidate” for purposes of this Agreement, and Agios shall be responsible for conducting IND-Enabling Studies with respect to such Development Candidate. Upon completion of the IND-Enabling Studies, Agios shall
provide written notice thereof to the JRC, JDC and Celgene. Such notice shall be accompanied by a package of all relevant data with respect to such IND-Enabling Studies. The JRC by Mutual Consent (with review and input from the JDC) shall have [**]
days following such notice by 

  
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Agios to confirm that the IND Study Criteria have been met with respect to such IND-Enabling Studies for such Development Candidate; provided that, within [**] days following such notice,
Celgene, the JDC or the JRC may reasonably request that Agios provide additional information and access to records (to the extent available and not yet disclosed to the JRC or the JDC as part of the regular updates under Section 3.1(b) or
Section 3.8(c)) with respect to such Development Candidate, in which event the [**]-day period for confirming that the IND Study Criteria have been met shall not begin to run until such information and access have been provided. If the JRC
determines the IND Study Criteria have not been met, Agios shall perform additional IND-Enabling Studies. If the JRC confirms that the IND Study Criteria have been met, Agios shall file the applicable IND with respect to such IND-Enabling Studies,
and Celgene shall be obligated to pay the IND Amount(s) upon IND Acceptance pursuant to Section 9.3(a)(i). In addition, Celgene shall have [**] days following written notice from Agios of such IND Acceptance to take the actions described in
Section 3.6(b)(iii)(A)(1) or (2) below; provided that, within [**] days following such notice from Agios, Celgene may reasonably request that Agios provide additional information and access to records (to the extent available to
Agios at such time and not yet disclosed to the JRC or the JDC as part of the regular updates under Section 3.1(b) or 3.8(c) or under Section 3.6(b)(ii) or this Section 3.6(b)(iii)) with respect to other Collaboration Compounds
directed against other Collaboration Targets under Validated Programs that have not yet reached the DC Selection Stage, or are in preclinical Development, in which event Celgene’s [**]-day period for undertaking the actions described in
Section 3.6(b)(iii)(A)(1) or (2) below shall not begin to run until such information and access have been provided (such period, as may be so extended, the “Celgene IND Option Exercise Period”): 

(1) Celgene, within such Celgene IND Option Exercise Period, may provide Agios written notice of Celgene’s election to exercise the
Celgene Program Option with respect to such Development Candidate (and the associated Discovery Program), in which event the provisions of Section 3.6(b)(iv) shall apply; or 

(2) Celgene, within such Celgene IND Option Exercise Period, may provide Agios written notice that Celgene elects that Agios conduct the
first Phase I MAD Study for the Development Candidate. In such event, Agios shall be responsible for conducting the first Phase I MAD Study with respect to such Development Candidate under a protocol approved by the JRC by Mutual Consent that meets
the Phase I MAD Protocol Criteria, and, unless the Program becomes a Split Program, Celgene shall be obligated to pay the Phase I Amount pursuant to Section 9.3(a)(ii). Upon Agios’ completion of such first Phase I MAD Study, Agios shall
deliver to Celgene a final written report that meets the Phase I Report Criteria. Within [**] days of Celgene’s receipt of such written report, Celgene may reasonably request that Agios provide additional information and access to records (to
the extent available to Agios at such time and not yet disclosed to the JRC or JDC as part of the regular updates under Section 3.1(b) or 3.8(c), or under Section 3.6(b)(ii) or this Section 3.6(b)(iii)) with respect to such Phase I
MAD Study and with respect to other Development Candidates that are undergoing IND-Enabling Studies or are at a later stage of Development under a different Program. Within [**] days following the Completion of Phase I MAD (and such any additional
information or access) (such period, as may be so extended, the “Celgene MAD Option Exercise Period”; either the “Celgene IND Option Exercise Period” or the “Celgene MAD Option Exercise Period” may be referred to
as a “Celgene Option Exercise Period”), Celgene may provide Agios written notice of its election to exercise the Celgene Program Option, in which event the provisions of Section 3.6(b)(iv) shall apply; 

  
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 (B) If Celgene (x) rejects the nominated Development Candidate pursuant to
Section 3.6(b)(iii), or does not make a DC Commitment with respect to such nominated Development Candidate during the exercise period set forth in Section 3.6(b)(iii) above, (y) makes the DC Commitment but does not, within the Celgene
IND Option Exercise Period, exercise the Celgene Program Option pursuant to Section 3.6(b)(iii)(A)(1) above or request that Agios conduct a first Phase I MAD Study pursuant to Section 3.6(b)(iii)(A)(2) above, or (z) after requesting
that Agios conduct the first Phase I MAD Study under Section 3.6(b)(iii)(A)(2) above within the Celgene IND Option Exercise Period, does not exercise the Celgene Program Option within the Celgene MAD Option Exercise Period pursuant to
Section 3.6(b)(iii)(A)(2) above, then the following shall occur: 
 (1) The Celgene Program Option with respect to such
Discovery Program shall terminate, 
 (2) The Discovery Program under which the Development Candidate was Developed shall
terminate hereunder (with the Collaboration Target subject to such Discovery Program being automatically removed from the Target List), and 
 (3) Except as provided in Section 8.9, all rights related to such Discovery Program granted by Agios to Celgene hereunder shall terminate, and such Discovery Program shall be deemed an Agios Reverted
Program in accordance with Section 3.12. 
 (C) For clarity, a DC Commitment by Celgene pursuant to this
Section 3.6(b)(iii) shall not be deemed a commitment to exercise a Celgene Program Option but shall require payment of the IND Amount if the requirements for such payment are met. 

(iv) If Celgene exercises a Celgene Program Option with respect to a Discovery Program within the applicable Celgene Option Exercise
Period pursuant to Section 3.6(b)(iii) above, upon such exercise: 
 (A) such Discovery Program shall become a Licensed
Program; 
 (B) Agios shall be responsible for continuing Development activities and Clinical Trials with respect to such
Development Candidate through Completion of Phase I MAD for the applicable Licensed Program, subject to the JRC or the JDC, as applicable, assigning any such Development activities to Celgene (based upon Celgene’s agreement and as set forth in
the applicable Development Plan and Development Budget) or as otherwise may be mutually agreed by the Parties. In addition, Agios shall conduct additional Development activities with respect to such Development Candidate as requested by Celgene and
agreed to by Agios, subject to Section 3.6(b)(iv)(D) below; 
 (C) following Completion of Phase I MAD for each such
Licensed Program (except as otherwise set forth in Section 3.10 with respect to any Split Program), Celgene shall undertake all further Development activities, subject to the JRC or the JDC, as applicable, assigning any such Development
activities to Agios (based upon Agios’ agreement and as set forth in the applicable Development Plan and Development Budget) or as otherwise may be mutually agreed by the Parties; 

  
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 (D) Celgene shall also be responsible, pursuant to Section 9.4(a), for the Development
Costs of Agios conducting any additional Development activities under such Licensed Program (except as otherwise set forth in Section 3.10 with respect to any Split Program) that are pursuant to a Development Budget under the Development Plan
for such Licensed Program and that are incurred after the Development Cost Initiation Date for such Licensed Program; and 

(E) Celgene shall be obligated to pay to Agios any other milestone payments or royalties which may become payable to Agios with respect
to Licensed Compounds and Licensed Products arising from such Licensed Program pursuant to Section 9.6 or Section 9.7, respectively (it being understood that if such Licensed Program becomes a Split Program pursuant to Section 3.10,
then Section 3.10(a)(iii) shall apply). 
 (v) If the JRC does not confirm the nomination of a Collaboration Compound as a
Development Candidate, the Parties shall continue Development of the Collaboration Compound as contemplated in this Agreement pursuant to the applicable Discovery Plan for it. 
 (c) Early Exercise of Option. Notwithstanding anything herein to the contrary, Celgene shall have the following rights, as applicable, to exercise its Celgene Program Option early, in accordance
with the terms set forth below: 
 (i) Celgene may exercise, upon written notice to Agios at any time prior to the expiration
of the Option Term (or, if applicable, with respect to any Extended Program, expiration of any Post-Option Extension), any Celgene Program Option early with respect to each Development Candidate (and the applicable Discovery Program) that has been
nominated by Agios pursuant to Section 3.6(b)(ii) (and, in the event of such early election, the JRC shall be deemed to have confirmed such nomination and Celgene shall be deemed to have made the DC Commitment); provided that,
with respect to each such Discovery Program, notwithstanding Celgene’s early exercise of such Celgene Program Option pursuant to this Section 3.6(c)(i), Section 3.6(b) and Section 3.10 shall apply in the same manner as though the
Celgene Program Option had been exercised pursuant to Section 3.6(b), including the following (to the extent applicable depending on the stage of Development of such Discovery Program); provided that Celgene’s license under
Section 8.2 with respect to such Program shall be effective immediately: 
 (A) unless Celgene requests and Agios agrees
otherwise, Agios shall complete all IND-Enabling Studies and obtain IND Acceptance with respect to such Discovery Program for which the Celgene Program Option has been exercised; 

(B) regardless of which Party completes such IND-Enabling Studies and obtains IND Acceptance, Agios shall be entitled to the IND Amount
pursuant to Section 9.3(a)(i) in the same manner as if a DC Commitment had been made (and as if the Celgene Program Option had not yet been exercised) in accordance with Section 3.6(b); 

  
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 (C) Agios shall continue to have a right to retain its US Territory rights with respect to
any such Discovery Program in accordance with Section 3.10 (including, as applicable, the right to make an Agios Deferral); and 
 (D) Celgene shall still remain obligated to make the milestone payments due pursuant to Section 9.6 and royalty payments due pursuant to Section 9.7 in the same manner as though Celgene had
exercised the Celgene Program Option pursuant to Section 3.6(b) and subject to Section 3.10. 
 (ii) Prior to the
earlier of (x) the expiration of the Option Term (or if, applicable, with respect to any Extended Program, expiration of any Post-Option Extension) and (y) the date of [**], Celgene may exercise its Celgene Program Option for any Discovery
Program with respect to which Agios has nominated a Development Candidate pursuant to Section 3.6(b) (and, in the event of such early election, the JRC shall be deemed to have confirmed such nomination and Celgene shall be deemed to have made
the DC Commitment) or take an exclusive license under Section 8.2 with respect to any other applicable Validated Program as a Picked Validated Program, upon written notice to Agios upon (A) Agios’ failure to provide any financial
statement in accordance with Section 3.6(c)(iii), which failure is not corrected within [**] days after written notice of Celgene; or (B) the occurrence of any event described in Section 3.6(c)(iv). The consequence of any such early
exercise of a Celgene Program Option pursuant to this Section 3.6(c)(ii) shall be the same as an early exercise under Section 3.6(c)(i), and the consequence of any such early exercise of a license for a Picked Validated Program shall be
the same as though such Picked Validated Program were selected by Celgene pursuant to Section 3.7; provided that, with respect to any Discovery Program for which Celgene exercises its Celgene Program Option, Celgene may assume all
such Development responsibilities or, at Celgene’s election, permit Agios to continue such Development in accordance with Section 3.6(b), but, if Celgene assumes such Development responsibilities, (1) Celgene shall be responsible for
all its Development Costs in connection with such Development, (2) Agios shall not be entitled to a Phase I Amount, and (3) Agios shall be entitled to the IND Amount pursuant to Section 9.3(a)(i) in the same manner as if a DC
Commitment had been made (and as if the Celgene Program Option had not yet been exercised) in accordance with Section 3.6(b), except that Celgene may deduct from any such IND Amount all Development Costs incurred by Celgene or its Affiliates
through IND Acceptance; provided further that, with respect to any Discovery Program for which Celgene exercises its Celgene Program Option or takes an exclusive license early under this Section 3.6(c)(ii), Celgene shall no
longer remain obligated to make any of the milestone payments due pursuant to Section 9.6, except for paying the milestone payments upon the occurrence of the events set forth in Section 9.6(a)(3) and Section 9.6(a)(4). 

(iii) Prior to the earlier of (x) the expiration of the Option Term (or if, applicable, with respect to any Extended Program,
expiration of any Post-Option Extension) and (y) the date of [**], Agios will furnish to Celgene (A) within [**] days after the end of each month, an unaudited balance sheet of Agios as of the end of such month (or as of the end of the
fiscal quarter, if applicable) and unaudited statements of income and of cash flows of Agios for 

  
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such month (or such quarter) and for the current fiscal year to the end of such month (or such quarter), setting forth in comparative form Agios’ projected financial statements for the
corresponding periods for the current fiscal year, and (B) within [**] days after the end of each fiscal year of Agios, an audited balance sheet of Agios as at the end of such year and audited statements of income and of cash flows of Agios for
such year, certified by certified public accountants of established regional or national reputation selected by Agios, and prepared in accordance with generally accepted accounting principles consistently applied. Agios will notify Celgene prior to
Agios entering into discussions with potential lenders or equity investors in order to avoid having any event described in Section 3.6(c)(iv) occur. 
 (iv) Prior to the earlier of (x) the expiration of the Option Term (or if, applicable, with respect to any Extended Program, expiration of any Post-Option Extension) and (y) the date of [**],
Agios covenants to provide Celgene with written notice no later than [**] after the occurrence of any of the following events: (A) the sum of all of Agios’ liabilities exceed the sum of all of Agios’ assets; (B) Agios is unable
to pay its debts as they become due; (C) Agios admits its inability to pay its debts as they fall due; (D) there is an occurrence and continuance (for a period in excess of any applicable cure period) of a default by Agios with respect to
any of its debt or payment obligations in excess of $[**] or any agreement having a materially adverse effect on Agios’ business or Agios’ ability to perform under this Agreement; (E) Agios suspends, closes, or otherwise ceases to
operate a portion of its business having a materially adverse effect on this Agreement; (F) Agios initiates any action to undertake restructuring of its assets or business in a manner that would have a materially adverse effect on this
Agreement, including hiring counsel or financial advisors with respect to such restructuring; (G) Agios fails to have sufficient available cash to fund at least [**] of its budgeted operating expenses, based on the budget approved by Agios
pursuant to Section 4.3(d) of the Amended and Restated Investor Rights Agreement among Agios and certain stockholders, dated as of the Effective Date; (H) Agios plans to take any action that would give Celgene a termination right under
Section 14.2(b)(ii); (I) Agios retains counsel or financial advisors to assist Agios in connection with any potential bankruptcy or insolvency proceeding; (J) one or more creditors of Agios notify Agios in writing that such creditors
have organized for the purpose of commencing negotiations with regard to a possible bankruptcy filing of Agios, or Agios has commenced negotiations with one or more creditors with regard to a possible bankruptcy filing of Agios; or (K) any
corporate or other action is taken by Agios for the purpose of effecting any of the foregoing. Celgene will treat all notices and financial reports (and the information contained therein) as Confidential Information of Agios, subject to the terms of
Article XI. 
 (d) Limitation on Development Candidates. Notwithstanding anything herein to the contrary, the Parties
agree that (x) Celgene shall not be required to exercise or waive its right to make a DC Commitment with respect to more than [**] in any Calendar Year, and (y) if Agios has already nominated [**] Development Candidates with respect to
[**] which Celgene has made a DC Commitment, as provided in Section 3.6(b), then Celgene shall not be required to exercise or waive its right to make a DC Commitment with respect to a [**] proposed Development Candidate prior to [**]. If Agios
nominates a Development Candidate that is confirmed by the JRC and that would exceed either of the thresholds in the prior sentence, then Celgene may make the DC Commitment for such Development Candidate at such time or may defer making the DC
Commitment until [**] days following the earlier of (i) the expiration of the Option Term and (ii)(A) with respect to clause (x) above, [**] of the following Calendar 

  
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Year, or (B) with respect to clause (y) above, [**] (the earlier such date, the “Delayed Commitment Date”). Failure of Celgene to take any action during the original
applicable DC Commitment exercise period set forth in Section 3.6(b)(iii) if the conditions in clauses (x) or (y) above are met shall be deemed an election to defer the decision to make the DC Commitment pursuant to this
Section 3.6(d). If the decision to make the DC Commitment is so deferred, Agios may either, in its sole discretion: 
 (i)
hold such Collaboration Compound in the Discovery Program and nominate it again as a Development Candidate following the Delayed Commitment Date, at which point the JRC shall automatically confirm such nominated Development Candidate unless the
Development Candidate no longer meets the Clinical Candidate Guidelines, and Celgene shall have [**] days from the JRC’s confirmation of such Development Candidate to make the DC Commitment in accordance with Section 3.6(b)(iii); or

 (ii) pursue Development of such Collaboration Compound until IND Acceptance at Agios’ own cost but under the oversight
of the JRC or JDC, as applicable, in which event the following shall apply: 
 (A) Agios shall provide [**] updates to the JRC
or JDC, as applicable, and Celgene on the progress of such Development activities since the prior update and on the general scope of proposed activities, including anticipated timelines and budgets, through at least IND Acceptance; 

(B) Agios shall not have the right to file any IND, unless the JRC or JDC, as applicable, determines by Mutual Consent that the IND
Study Criteria have been met as described in Section 3.6(b)(iii)(A). In addition, at least [**] days prior to any proposed IND Acceptance, Agios shall provide to Celgene the proposed materials to be submitted as part of the IND Acceptance;

 (C) if Agios achieves an IND Acceptance with respect to such Collaboration Compound, Agios shall provide written notice to
Celgene and all relevant information and access to records with respect to such Collaboration Compound (and with respect to other Collaboration Compounds directed against other Collaboration Targets under Validated Programs that have not yet reached
the DC Selection Stage or are in preclinical Development) as may be reasonably requested by Celgene within [**] days of such notice (to the extent such information and access are available to Agios at such time and not yet disclosed to the JRC or
JDC); and 
 (D) Celgene shall have [**] days from the delivery of the information and access described in
Section 3.6(d)(ii)(C) to make the DC Commitment (in which event the provisions of Section 3.6(b)(iii) shall apply) or exercise the Celgene Program Option (in which event the provisions of Section 3.6(b)(iv) shall apply);
provided that, if the condition in Section 3.6(d)(y) has been met, such [**]-day period shall run from [**]. If Celgene does make the DC Commitment or exercise the Celgene Program Option, Celgene shall pay Agios the IND Amount
pursuant to Section 9.3(a)(i) within [**] days following delivery of its exercise notice. 

  
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 (e) HSR Clearance; Cooperation. 

(i) Notwithstanding anything in this Section 3.6 to the contrary, if the exercise of any Celgene Program Option requires clearance
under the HSR Act, the Parties shall use Commercially Reasonable Efforts to promptly obtain any necessary clearance under the HSR Act for the exercise by Celgene of any Celgene Program Option, including the prompt filing of a copy of this Agreement
and each Party’s respective premerger notification and report forms with the FTC and the DOJ pursuant to the HSR Act, and shall keep each other apprised of the status of any communications with, and any inquiries or requests for additional
information from, the FTC and the DOJ and shall comply with any such inquiry or request; provided, however, that neither Party shall be required to consent to the divestiture or other disposition of any of its assets or assets
of its Affiliates or to consent to any other structural or conduct remedy, and each Party and its Affiliates shall have no obligation to consent, administratively or in court, any ruling, order or other action of the FTC or DOJ or any Third Party
respecting the transactions contemplated by this Agreement. 
 (ii) The Parties commit to instruct their respective counsel to
cooperate with each other and use Commercially Reasonable Efforts to facilitate and expedite the identification and resolution of any such issues and, consequently, the expiration of the applicable HSR Act waiting period. Each Party’s counsel
will undertake (A) to keep each other appropriately informed of communications from and to personnel of the reviewing antitrust authority, and (B) to confer with each other regarding appropriate contacts with and response to personnel of
the FTC or DOJ. Celgene shall be responsible for the filing fee in connection with any HSR Act filing relating to the transactions contemplated in this Agreement. 
 (iii) Celgene may exercise the Celgene Program Option subject to receipt of required clearances under the HSR Act. For clarity, if clearance under the HSR Act is required with respect to any Celgene
Program Option, as described above, exercise of such Celgene Program Option shall not be effective until after the expiration or termination of all applicable waiting periods under the HSR Act; provided that, as long as Celgene has
provided notice of its intention to exercise such Celgene Program Option during the time periods set forth in this Section 3.6, then the Post-Option Extension with respect to the applicable Program shall remain in effect until the expiration or
termination of such waiting periods. 
 (iv) For purposes of this Section 3.6(e), the following definitions shall apply:

 (A) “DOJ” means the United States Department of Justice. 

(B) “FTC” means the United States Federal Trade Commission. 

(C) “HSR Act” means the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (15 U.S.C. §18a), and the
rules and regulations promulgated thereunder. 
 (D) In addition, notwithstanding anything herein to the contrary, if the grant
of an exclusive license under Section 8.2 to Celgene with respect to Celgene’s Picks, a Buy-In Program with respect to which Celgene is the Commercializing Party, or a Celgene Reverted Program requires clearance under the HSR Act, the
provisions of this Section 3.6(e) shall apply and the grant of such exclusive license to Celgene shall not be effective until after the expiration or termination of all applicable waiting periods under the HSR Act. 

  
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 Section 3.7 Selection of Validated Programs Upon Expiration of Option Term. Upon
expiration of the Option Term, the Parties will begin the process set forth below for selecting Validated Programs from the Discovery Programs remaining in the Collaboration that have not yet reached the DC Selection Stage. 

(a) Within [**] days after the expiration of the Option Term, Agios shall provide to the JRC and Celgene an update to the Compound List
with respect to each Discovery Program remaining in the Collaboration as of the expiration of the Option Term. Within [**] days following delivery of such updated list, the JRC, by Mutual Consent, shall confirm which of those Discovery Programs are
Validated Programs that have not yet reached the DC Selection Stage, and establish a list of such Validated Programs; provided that, within [**] days following such delivery of such list, Celgene or the JRC may reasonably request that Agios
provide additional information and access to records (to the extent available to Agios at such time and not yet disclosed to the JRC or JDC) with respect to such Discovery Programs, in which event the JRC’s [**]-day period for confirming such
Discovery Programs as Validated Programs shall not begin to run until such information and access have been provided. Promptly following the JRC’s confirmation of Validated Programs, Agios shall provide to Celgene and to the JRC an accounting
of all FTE costs and Out-of-Pocket Costs incurred by Agios to conduct discovery and other Development activities under each Validated Program prior to the expiration of the Option Term (the “Validated Program Discovery Costs”). For
purposes of clarity, if any such Discovery Program remaining in the Collaboration is not determined to be a Validated Program by the JRC, except as provided in Section 8.9, all rights related to such Discovery Program granted by Agios to
Celgene hereunder shall terminate, and such Discovery Program shall be deemed an Agios Reverted Program in accordance with Section 3.12. 
 (b) Except as otherwise provided in Section 3.3(b)(iii) or 15.5, the Parties will select the Validated Programs for potential future Development by a Party by taking turns picking (each Party’s
pick of a Validated Program or Validated Programs, as applicable, shall be referred to as a “Pick” or “Picked Validated Program”) until all Validated Programs have been picked, as follows: 

(i) Within [**] days following Agios’ delivery to Celgene and the JRC of the Validated Program Discovery Cost information for all
confirmed Validated Programs, Agios shall propose in writing to Celgene [**] potential in-person meeting dates on Business Days, such potential dates to be within [**] days after such proposal is made, and Celgene shall respond by accepting one
proposed meeting date within [**] Business Days after such proposal is made. The meeting shall be held at a location to be mutually agreed by the Parties. 
 (ii) At such meeting, the Parties shall begin the picking process by undertaking a coin toss conducted by a mutually-agreed Third Party. The Party that wins the coin toss shall select the Party that has
the right to make the first Pick (the “First Picking Party”). At the meeting, the First Picking Party may select as its Pick, in the first turn, [**]. The Party 

  
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that is not the First Picking Party may then select as its Pick, in the second turn, up to [**]. For each turn after the second turn, starting with the First Picking Party, the Parties shall take
alternating turns selecting [**] after the other Party’s Pick until all Validated Programs have been selected by a Party. If neither Party exercises its right to select the last remaining Validated Program(s), such Validated Program(s) shall
terminate, and, except as provided in Section 8.9, all rights related to such Validated Program(s) granted by Agios to Celgene hereunder shall terminate, and such Validated Program shall be deemed an Agios Reverted Program in accordance with
Section 3.12, unless otherwise mutually agreed by the Parties. 
 (c) Any Picked Validated Program selected by Celgene
shall be deemed a Licensed Program hereunder and the Picked Compounds under such Picked Validated Program shall include any and all Collaboration Compounds on the Compound List associated with the Collaboration Target in the Picked Validated Program
(unless such compounds are already associated with a Picked Validated Program selected earlier in the picking process), data on any compounds that meet the “Screening Hits” criteria under the baseline Activity criteria set forth on
Schedule 1.1 under such Picked Validated Program up to the date of expiration of the Option Term, and any in vivo and in vitro data with respect to such Picked Validated Program; and the licenses granted to a Party pursuant to
Section 8.2(b) with respect to such Validated Program shall become effective upon such Validated Program becoming a Pick of Celgene. Each Party’s Development obligations under any Picked Validated Program selected by Celgene shall be as
set forth in Section 3.8(a)(iv) below, and Celgene shall be obligated to pay to Agios Validated Program Discovery Costs as set forth in Section 9.3(b), milestone payments as set forth in Section 9.6(a), and royalties as set forth in
Section 9.7(d). For clarity, no IND Amount or Phase I Amount shall be due with respect to Celgene’s Picks. 
 (d) Any
Picked Validated Program selected by Agios (or not selected by either Party pursuant to Section 3.7(b)(ii) above) shall be deemed an Agios Reverted Program for all purposes hereunder in accordance with Section 3.12. 

(e) Notwithstanding any of the foregoing, except as provided in Section 3.3(b)(iii), any Discovery Program remaining in the
Collaboration as of the end of the Option Term that has not reached the DC Selection Stage and is directed to [**] (each such Discovery Program shall be deemed an “Extended Program”) shall not be subject to the picking mechanism set
forth in this Section 3.7, but shall remain in the Collaboration as a Discovery Program until the end of its Discovery Term for all purposes hereunder (such extended period shall be deemed a “Post-Option Extension”) and shall
remain subject to the Celgene Program Option until the end of its Discovery Term. With respect to such [**] Discovery Programs: 
 (i) such Discovery Program shall be subject to the same process for DC Selection Stage, DC Commitment and Celgene Option Exercise as described in Section 3.6(b) as other Discovery Programs were
subject to during the Option Term, including making any payments as set forth in Section 9.3(a), if applicable; 
 (ii)
the licenses granted to a Party pursuant to Section 8.2 with respect to such Discovery Program shall become effective only upon the Option Exercise Date for such Discovery Program; 

  
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 (iii) each Party’s Development obligations shall be as set forth in
Section 3.8(a)(ii); and 
 (iv) if Celgene exercises the Celgene Program Option for such Discovery Program, Celgene shall
be obligated to pay to Agios Development Costs as set forth in Section 9.4, milestone payments as set forth in Section 9.6, and royalties as set forth in Section 9.7. The Discovery Programs directed to [**] shall be subject to the
provisions of Section 3.6 and Section 3.10 in the same way as other Discovery Programs that reach the DC Selection Stage during the Option Term (i.e., if such [**] Discovery Program is the [**] if an Agios Deferral is made)
Optionable Program). 
 Section 3.8 Primary Goals and General Responsibilities of Licensed Program. 

(a) Licensed Program. 
 (i) With respect to each Split Program or Co-Commercialized Program, following the end of the Discovery Term for such Licensed Program, except as otherwise expressly set forth in this Agreement or
mutually agreed by the Parties: 
 (A) Agios shall be responsible for (1) if Celgene has requested Agios to conduct the
first Phase I MAD Study pursuant to Section 3.6(b)(iii)(A)(2), conducting all Clinical Trials through Completion of Phase I MAD with respect to Licensed Compounds Developed under such Licensed Program, and (2) conducting other Development
activities as may be contemplated under the Development Plan (but only such activities that Agios has consented to conduct); and 
 (B) Except as set forth in Section 3.10 with respect to any Split Program, Celgene shall be responsible for (1) conducting all Clinical Trials with respect to Licensed Compounds Developed under
such Licensed Program following Completion of Phase I MAD, and (2) conducting other Development activities as may be contemplated under the Development Plan (but only such activities prior to Completion of Phase I MAD that Celgene has consented
to conduct). 
 (ii) With respect to each (if any) Discovery Program directed to [**] that has not yet reached the DC Selection
Stage as of the end of the Option Term, Agios shall be responsible for Development activities under the Discovery Plan for such Program until the earlier of (A) [**] years following the end of the Option Term and (B) IND Acceptance (or, if
the DC Commitment is made, Completion of Phase I MAD) for a Development Candidate in such Program. If IND Acceptance is not achieved by [**] years following the end of the Option Term or, if IND Acceptance is achieved by such time but Celgene does
not exercise the Celgene Program Option within the Celgene Option Exercise Period, except as provided in Section 8.9, all rights related to such Program(s) granted by Agios to Celgene hereunder shall terminate, and such Program(s) shall be
deemed an Agios Reverted Program in accordance with Section 3.12. 
 (iii) With respect to each Buy-In Program, following
the end of the Discovery Term for such Buy-In Program, except as otherwise expressly set forth in this Agreement or mutually agreed by the Parties, the Commercializing Party with respect to such Buy-In Program shall be responsible for all
Development activities under such Buy-In Program. 

  
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 (iv) With respect to each Picked Validated Program selected by Celgene, following the end
of the Discovery Term for such Program, except as otherwise expressly set forth in this Agreement or mutually agreed by the Parties, Celgene shall be responsible for all Development activities under such Program. 

(b) Back-Up Compounds. 
 (i) It is understood that the JRC (or the JDC, as applicable) will identify Back-Up Compounds as contemplated by Sections 1.7, 1.14, 1.23, 1.47, and 1.98 and the compounds that contain the [**] or any
series of compounds demonstrating activity against a Target as contemplated by Sections 1.14(a)(iv), 1.23(d), 1.47(d), and 1.98(a)(iv). When the JRC (or the JDC, as applicable) identifies a Collaboration Compound to be designated as a Back-Up
Compound in a Program, such Collaboration Compound can only be so designated if it has not previously been allocated to another Program or if the Committee by Mutual Consent (after disclosure of the previous allocation of such Collaboration Compound
to another Program) determines to designate such Collaboration Compound as a Back-Up Compound to such second Program. 
 (ii)
As part of Agios’ Development responsibilities, upon Celgene’s written request at any time following IND Acceptance for a Development Candidate under a Licensed Program, Agios will advance the Development of [**] related to such
Development Candidate through IND-Enabling Studies; provided that, regardless of the results of the IND-Enabling Studies, Agios shall not be required to pursue additional IND-Enabling Studies for such [**] under such Licensed Compound.
All costs associated with Development of such [**] through such IND-Enabling Studies shall be at Agios’ sole cost and shall not be Development Costs to be reimbursed by Celgene hereunder; and Agios shall not be entitled to an IND Amount with
respect to any Back-Up Compounds. Subject to the foregoing, if none of the [**] Developed by Agios and included within a Licensed Program meet the Clinical Candidate Guidelines, upon Celgene’s written request, Agios will use Commercially
Reasonable Efforts to identify another [**] that will meet such guidelines and that is not already allocated to another Program. Any original [**] that is replaced as provided in this section shall become a Residual Program Compound. 

(c) Updates. Following the Discovery Term for a Licensed Program and thereafter with respect to each Licensed Program, each Party
shall provide the other Party with regular quarterly written reports on such Party’s activities relating to the Development, Commercialization, or other Collaboration activities following the Discovery Term, including a summary of results,
information, and data generated, any activities planned with respect to Development going forward (including, for example, updates regarding regulatory matters and Development activities for the next [**]), challenges anticipated and updates
regarding intellectual property issues (including a disclosure of Collaboration Intellectual Property developed or generated since the last written report) relating to each Licensed Program. Such written reports may be discussed by telephone or
video-conference, or may be provided at each JRC, JDC or JCC meeting, as applicable; provided that, reasonably in advance of the meeting of such Committee, the Party providing the written report will deliver to the other Party an
agenda setting forth what will be discussed during the meeting. The Party receiving such written report shall have the right to reasonably request, and to receive in a timely manner clarifications and

  
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answers to, questions with respect to such reports. During the Term, with respect to each Licensed Program, each Party shall coordinate with, and keep the other Party and the JDC informed with
respect to, activities assigned to such Party under the applicable Development Plan, including the conduct of any applicable Clinical Trials. Notwithstanding the foregoing, with respect to any Picked Validated Program selected by Celgene or with
respect to any Buy-In Program, each Party shall only have an obligation to provide such written reports [**]. 

Section 3.9 Development Plans. 
 (a) The Development under each Co-Commercialized Program, Split Program, or Buy-In Program shall be governed by a Development Plan (the “Development Plan”) that describes the proposed
overall objectives of such Licensed Program, as well as the activities to be performed, the Party responsible for performance of an activity (which shall be as provided in Section 3.8), [**] budget of Development Costs (“Development
Budget”), and anticipated timelines for performance; provided that the Development Budget will only be applicable for periods following the Development Cost Initiation Date for such Licensed Program. In addition, if Celgene
requests that Agios perform any Development activities for a Celgene Picked Validated Program and Agios consents to perform such activities, such activities shall also be governed by a Development Plan, with Development Budget. 

(b) With respect to each Co-Commercialized Program, Agios will prepare and deliver to the JDC the initial Development Plan as set forth
in Section 3.6(b)(ii). Within [**] days following the Option Exercise Date with respect to such Co-Commercialized Program, the JDC shall review and approve such initial Development Plan, with such modifications as determined by the JDC. The
Development Plan for a Co-Commercialized Program shall not include a Development Budget, except for such Development activities as are to be conducted by Agios pursuant to Section 3.8. 

(c) With respect to each Buy-In Program, the Commercializing Party will prepare and deliver to the JDC the initial Development Plan as
set forth in Section 3.11(a). Within [**] days following the Buy-In Party’s exercise of the Buy-In Right with respect to such Buy-In Program, the JDC shall approve such plan, with such modifications as determined by the JDC. 

(d) With respect to each Split Program, Agios will prepare and deliver to the JDC the initial Development Plan as set forth in
Section 3.6(b)(ii). Within [**] days following the Option Exercise Date for such Split Program, the JDC shall review and approve such initial Development Plan, with such modifications as determined by the JDC. 

(e) The Commercializing Party shall prepare [**] updates to each Development Plan for each Co-Commercialized Program, Buy-In Program, and
Split Program in the Field in the Commercializing Party’s Territory, which [**] updates shall be submitted for approval by the JDC. Subject to Section 2.8, the Development Plan may be amended during the [**] by the JDC. 

Section 3.10 Split Programs; Agios Deferral Right; Development Activities; Agios Opt-Out. 

  
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 (a) Split Programs; Agios Deferral. 

(i) Within [**] days of the IND Acceptance for an Optionable Program, Agios shall have the right to elect to retain all US Territory
rights with respect to the [**] Optionable Programs or, if Agios makes an Agios Deferral, with respect to the [**] such Optionable Programs, by providing written notice to Celgene within such [**]-day period. For clarity, Agios shall have no US
Territory rights pursuant to this Section 3.10, or a right to make an Agios Deferral, with respect to the [**] Optionable Programs and shall only have the US Territory rights pursuant to this Section 3.10 with respect the [**] Optionable
Program or, if Agios makes the Agios Deferral, the [**] Optionable Program (but, with respect to the [**] Optionable Programs with respect to which Agios does not retain the US Territory rights, Agios shall retain the rights specified in Article VI
with respect to Co-Commercialized Products). Agios may exercise its rights to retain US Territory rights by providing written notice to Celgene within such [**]-day period; provided that, if Agios fails to take any action within such
[**]-day period, Agios shall be deemed to have waived its right to retain all US Territory rights with respect to the [**] (or if Agios has made an Agios Deferral, the [**]) Optionable Program out of every [**] Optionable Programs. The [**] if an
Agios Deferral is made) Optionable Program with respect to which Agios retains the US Territory rights under this Section 3.10 shall be deemed a Split Program. 
 (ii) Instead of exercising its US Territory rights on the [**]Optionable Programs pursuant to Section 3.10(a)(i) above, Agios shall have the right to defer its US Territory rights to the [**]
Optionable Program (“Agios Deferral”), by providing Celgene written notice thereof within [**] days of the IND Acceptance for such Optionable Program, in which event Agios’ right to elect to retain the US Territory rights
pursuant to Section 3.10(a)(i) above shall apply to such [**] Optionable Program. 
 (iii) Upon the Option Exercise Date
for a Split Program, (A) Agios shall have the exclusive right to pursue the Development and Commercialization of Licensed Compounds and Licensed Products under such Split Program in the US Territory; (B) Celgene shall have the exclusive
right to pursue the Development and Commercialization of Licensed Compounds and Licensed Products under such Split Program in the ROW Territory; (C) the licenses granted to a Party under Section 8.2(c) with respect to such Split Program
shall become effective; (D) the Parties shall share in the Global Development Costs of Licensed Compounds and Licensed Products Developed under such Split Program as set forth in Section 9.4; (E) Celgene shall be responsible for
paying to Agios specified royalties on Net Sales in the ROW Territory as set forth in Section 9.7(b)(i); (F) Celgene shall be responsible for paying to Agios specified milestone payments upon achievement of specific milestone events
associated with the ROW Territory as set forth in Section 9.6; and (G) Agios shall be responsible for paying to Celgene specified royalties on Net Sales in the US Territory as set forth in Section 9.7(b)(ii). Celgene shall have no
obligation to pay any IND Amount on any Split Program. 
 (iv) The [**] Optionable Program out of every [**] Optionable
Programs (or, if Agios makes an Agios Deferral, the [**] Optionable Program), upon the Option Exercise Date, shall be deemed Co-Commercialized Programs hereunder; provided that, if Agios elects not to exercise its right to retain US
Territory rights under Section 3.10(a)(i) with respect to the [**] (or if Agios makes an Agios Deferral, the [**]) such Optionable Program, then such Optionable Program shall also be deemed a Co-Commercialized Program hereunder. 

  
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 (v) For purposes of clarity, (A) Agios’ US Territory rights, and right to make an
Agios Deferral, shall apply to the [**], as applicable) out of the first [**] Optionable Programs for which Celgene exercises the Celgene Program Option, then shall apply to the [**], as applicable) out of the next [**] such Optionable Programs, and
shall continue with respect to each set of [**] Optionable Programs for which Celgene exercises the Celgene Program Option; and (B) if Celgene does not exercise the Celgene Program Option for an Optionable Program, such Optionable Program shall
not count as [**] Optionable Programs for purposes of this Section 3.10, and, to the extent Agios exercised its rights to retain US Territory rights or made an Agios Deferral with respect to such Optionable Program, such election shall not
count as Agios’ exercise of rights or an Agios Deferral, which shall then transfer to the next Optionable Program. 
 (b)
Development Activities. 
 (i) The Commercializing Party shall be responsible for conducting all Development activities
as may be contemplated under the Development Plan for each Split Program with respect to such Commercializing Party’s portion of the Territory (i.e., the US Territory for Agios and the ROW Territory for Celgene). Neither Commercializing
Party shall conduct any Development activities for any Split Program outside such Party’s portion of the Territory (even if such Development activities are for purposes of Development in such Party’s portion of the Territory), unless the
JDC by Mutual Consent approves of such activities, including any protocol associated with a Clinical Trial, and such activities are reflected in the applicable Development Plan. 

(ii) The Parties will share all Global Development Costs in accordance with Section 9.4(b); provided that Celgene
shall not be responsible for any of Agios’ Global Development Costs prior to the Development Cost Initiation Date. For clarity, Celgene’s obligation to share Global Development Costs shall not include any Development Costs incurred prior
to the Development Cost Initiation Date or any Development Costs related to any Clinical Trial for which the FPD occurred prior to the Development Cost Initiation Date even if completed following the Development Cost Initiation Date; instead,
Celgene’s obligations will be limited to Development activities related to any company-sponsored Phase II Studies or later stages of Development. 
 (iii) If either Party proposes to undertake any Development activities for a Split Program in such Party’s portion of the Territory that the other Party reasonably determines are reasonably likely to
have a material adverse impact on the Development or Commercialization of Split Compounds or Split Products in the other Party’s portion of the Territory, such proposing Party shall not proceed with such Development activities unless approved
by the JDC (with any disputes resolved in accordance with the dispute resolution procedure of Section 2.8, including the Lead Party having the final decision-making authority to the extent provided in Section 2.8(b)). 

  
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 (iv) With respect to each Split Program, each Party shall be entitled to use the data and
results (including clinical data) from all Development activities conducted by the other Party; provided that a Party shall not interpret such data or results in a different manner than the Party who performed the Development activity
giving rise to the data or results without the performing Party’s prior written consent (which may be given through the Party’s representatives on the JDC). In furtherance thereof, each Commercializing Party shall update the other Party
pursuant to Section 3.8(c) on the status of all Development activities for Split Programs, including a summary of relevant data. Each Commercializing Party will use Commercially Reasonable Efforts to ensure the other Party has access to such
data and results, including, if appropriate, providing for such access in any agreement with a Third Party Contractor. 
 (c)
Agios Opt-Out. Notwithstanding any of the foregoing in this Section 3.10 and without it being a breach of Section 7.2(a)(ii), following the [**] of the Option Exercise Date for a Split Program, Agios shall have the right, effective
upon [**] prior written notice, to elect to opt-out of its US Territory rights under such Split Program (the “Agios Opt-Out” and the effective date of such Agios Opt-Out being the expiration of such [**] period, the “Agios
Opt-Out Date”) (which notice shall may not be given prior to the [**] of the Option Exercise Date). Upon receipt of such Agios Opt-Out notice: 
 (i) Celgene may elect to assume all US Territory rights under such Split Program (effective on the Agios Opt-Out Date) by providing Agios with written notice, in which event, (A) Agios shall provide
to Celgene a reasonably detailed accounting of all Development Costs incurred by Agios under such Split Program prior to the Agios Opt-Out Date; (B) Agios and Celgene shall continue to share Global Development Costs through the Agios Opt-Out
Date under Section 9.4; (C) Agios shall provide to Celgene a reasonably detailed summary of Development activities, including Global Studies and other global Development activities, undertaken by Agios under such Split Program, including
any Clinical Trials committed but not yet completed as of such date; (D) Agios shall undertake, and coordinate with Celgene with respect to, any wind-down or transitional activities reasonably necessary to transfer to Celgene Development,
Manufacturing and Commercialization responsibility in the US Territory for such Split Program, at Agios’ sole expense; provided that the Parties shall reasonably cooperate in seeking to minimize the costs of such wind-down or
transitional activities; provided further that, (1) if Celgene requests that any contracts or agreements that extend beyond the Agios Opt-Out Date be terminated, Agios shall be responsible for all costs associated with such
termination, and, (2) if Celgene requests that any such contract or agreement remain in effect, Celgene shall be responsible for all Territory-Specific Development Costs under such contract or agreement following the Agios Opt-Out Date or, if
Celgene requests assignment of such contract or agreement prior to the Agios Opt-Out Date, following such assignment (whichever is earlier); (E) upon the Agios Opt-Out Date, each Licensed Product under such Split Program shall become a
Co-Commercialized Product both with respect to the US Territory and the ROW Territory, and such Split Program shall become a Co-Commercialized Program in both the US Territory and ROW Territory, and shall thereafter be subject to the milestone
payment and royalty provisions of Section 9.6 and 9.7 applicable to other Co-Commercialized Products, without any retroactive application of such provisions; provided that Agios shall not be entitled to perform Commercialization
Activities for such Co-Commercialized Product pursuant to Section 6.3; and (F) the licenses granted to each Party with respect to such Split Program under Section 8.2(c) shall convert to the licenses granted to each Party with respect
to a Co-Commercialized Program under Section 8.2(a). For clarity, upon the Agios Opt-Out Date, if Celgene elects to assume all US Territory rights, Celgene shall be responsible for all Development Costs for such Co-Commercialized Program,
except as provided in clause (D) above. 

  
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 (ii) If Celgene elects not to assume all US Territory rights under such Split Program, then
upon the Agios Opt-Out Date, (A) Celgene shall retain its ROW Territory rights and obligations hereunder and shall have no obligation to pay Agios for Global Development Costs incurred by Agios under such Split Program (other than paying for
Celgene’s share of Global Development Costs incurred prior to the Agios Opt-Out Date); (B) each Split Product in the ROW Territory shall become a Co-Commercialized Product and the applicable Split Program shall become a Co-Commercialized
Program, in each case, with respect to the ROW Territory, except that the licenses for such Program shall continue to be as described in Section 8.2(c)(i); (C) Celgene’s license to Agios under Section 8.2(c)(ii) shall terminate;
(D) each Party shall be prohibited from pursuing the Development, Manufacture or Commercialization of Split Compounds and Split Products under such Split Program in the US Territory; (E) Agios, at Celgene’s election, either transfer
all INDs with respect to such Split Program to Celgene or close such INDs; and (F) Agios shall not license Agios Intellectual Property and Agios Collaboration Intellectual Property to a Third Party in connection with the Development,
Manufacture or Commercialization of Split Compounds or Split Products under such Split Program in the US Territory, and Celgene shall not license the Celgene Intellectual Property or Celgene Collaboration Intellectual Property previously exclusively
licensed to Agios pursuant to Section 8.2(c) to a Third Party in connection with the Development, Manufacture or Commercialization of Split Compounds or Split Products under such Split Program in the US Territory. 

(d) Celgene Right of First Negotiation. If Agios intends to begin negotiations with any Third Party(ies) to grant a license to
such Third Party to the US Territory rights for a Split Program (excluding licenses to Third Party Contractors or solely for purposes of promotion, distribution or other marketing and sales activities with or on behalf of Agios) (the
“Licensing Opportunity”), Agios shall provide written notice of such intent to Celgene, and Celgene shall have [**] days to notify Agios in writing that Celgene desires to negotiate with respect to such Licensing Opportunity. If
Celgene provides such notice in such [**]-day period, Agios shall exclusively negotiate in good faith with Celgene with respect to such Licensing Opportunity. If the Parties are unable to enter into a definitive agreement with respect to such
Licensing Opportunity within [**] days (or such longer period agreed to by the Parties) following written notice from Celgene of its interest in entering into negotiations, then Agios shall be free during the next [**] months after the expiration of
the foregoing [**]-day (or, if applicable, longer) negotiation period to enter into a transaction relating to such Licensing Opportunity with any Thirty Party(ies); provided that, if Agios does not enter a Licensing Opportunity prior
to the expiration of such [**]-month period, such Licensing Opportunity shall again be subject to the provisions of this Section 3.10(d); provided further that, if Agios offers terms to any Third Party with respect to the
Licensing Opportunity that are the same or more favorable to such Third Party than the terms last offered by Celgene, taken as a whole, with respect to the Licensing Opportunity, then (i) Agios shall first offer such terms or more favorable
terms to Celgene and Celgene shall have the right to enter into an agreement with Agios with respect to the Licensing Opportunity on such terms or more favorable terms; and (ii) if Celgene does not exercise such right to enter into an agreement
with Agios with respect to the Licensing Opportunity on such 

  
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terms or more favorable terms by providing written notice to Agios within [**] days following Agios’ notice to Celgene of such terms or more favorable terms, Celgene’s right to
negotiate the terms of, or enter into an agreement with respect to, the Licensing Opportunity with Agios under this Section 3.10(d) shall terminate, and Agios shall be free to enter into a transaction relating to the Licensing Opportunity with
any Third Party(ies) on such terms or such more favorable terms, as applicable, within such [**]-month period. Celgene’s rights with respect to a Licensing Opportunity shall be on a Split Program-by-Split Program basis, and the expiration of
such rights for one Split Program shall not affect Celgene’s rights to negotiate a Licensing Opportunity with a different Split Program pursuant to the provisions of this Section 3.10(d). 

(e) Agios Licensing of US Territory Rights. If Agios grants a license to a Third Party to Develop or Commercialize Split Products
in the US Territory under the first Split Program only (excluding licenses to Third Party Contractors or solely for purposes of promotion, distribution or other marketing and sales activities with or on behalf of Agios), then, notwithstanding
anything herein to the contrary (including Section 2.8(c)(iv)), if any dispute arises at the JDC with respect to any changes to the Development Plan (including the Development Budget) or any Development activities conducted by a Party under
such Split Program (including clinical Manufacturing activities), and such dispute is not resolved at the JDC or JSC level or by the Executive Officers pursuant to Section 2.8, [**] shall have final decision-making authority with respect to
such dispute, [**], until (i) FDA approval of the first special protocol assessment (“SPA”) for the first pivotal trial for such first Split Program, if the JDC decides to pursue a SPA, or (ii) JDC approval of the protocol
design for the first pivotal trial for such first Split Program, if the JDC decides not to pursue a SPA; provided that [**] shall exercise any such final decision-making authority in a manner consistent with a commitment of
Commercially Reasonable Efforts to the Development and Commercialization of Split Product under such Split Program in the US Territory. 
 Section 3.11 Independent Programs; Buy-In Right at IND Acceptance. 

(a) Buy-In Right. Either Party (but not both Parties) may Develop an Independent Program pursuant to Section 3.5(b)(ii);
provided that (i) such Party shall provide quarterly updates to the JRC (or the JDC, as applicable) and the other Party on the progress of such Development activities since the prior update and the general scope of proposed
activities, including anticipated timelines and budgets, through at least IND Acceptance, (ii) at least [**] days prior to any proposed IND Acceptance in the Oncology Field, such Party shall provide to the JRC and the other Party the proposed
materials to be submitted as part of the IND Acceptance, and (iii) in the event that such Party achieves an IND Acceptance with respect to any such Independent Program, such Party shall provide written notice to the other Party thereof (the
“Buy-In Party”) and all relevant information and data with respect to such Independent Program as may be reasonably requested by the Buy-In Party, including pre-clinical data, proposed Development Plans, budgets and timelines.

 (b) Exercise of Buy-In Right. The Buy-In Party shall have [**] days from the delivery of the information and data
described in Section 3.11(a)(iii) above to exercise its right to buy into such Independent Program (“Buy-In Right”) by: 
 (i) providing written notice to the other Party of such exercise; and 

  
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 (ii) paying the other Party a one-time, non-refundable payment of [**] Dollars (US$[**])
within [**] days following such notice as a Buy-In Right exercise fee. 
 (c) Effects of Exercising or Waiving Buy-In
Right. 
 (i) If the Buy-In Party exercises its Buy-In Right with respect to an Independent Program, such Independent
Program shall thereafter be deemed a Buy-In Program and each Party’s rights and obligations under this Agreement with respect to such Buy-In Program shall become effective, including the licenses granted pursuant to Section 8.2(d), the
Parties’ obligations to share in Development Costs as set forth in Section 9.4(c), and the obligation of the Commercializing Party to pay the Buy-In Party specified royalties on worldwide Net Sales as set forth in Section 9.7(c).
Notwithstanding anything herein to the contrary, Celgene shall not owe any IND Amount or Phase I Amount for any Buy-In Product, regardless of who is the Buy-In Party. 
 (ii) If Celgene declines to exercise its Buy-In Right (or does not provide any notice within such [**]-day period) with respect to an Independent Program being independently Developed by Agios, except as
provided in Section 8.9, all rights related to such Independent Program granted by Agios to Celgene hereunder shall terminate, and such Independent Program shall become an Agios Reverted Program in accordance with Section 3.12. 

(iii) If Agios declines to exercise its Buy-In Right (or does not provide any notice within such [**]-day period) with respect to an
Independent Program being independently Developed by Celgene, such Independent Program shall thereafter be deemed a Celgene Reverted Program, and the licenses granted to Celgene pursuant to Section 8.2(e) with respect to such Celgene Reverted
Program shall become effective. Celgene shall have no further financial obligations, and Agios shall have no further rights, with respect to such Celgene Reverted Program, except that (A) Celgene shall be obligated to pay Agios royalties on Net
Sales of Celgene Reverted Products Commercialized under such Celgene Reverted Program in accordance with Section 9.7(e), (B) any Celgene Reverted Program and any Celgene Reverted Products shall be considered a “Program” and
“Licensed Product,” respectively, solely for purposes of Article XIV, and (C) in the event that Celgene breaches Section 9.7(e), and subject to Section 14.2(b)(i), Agios shall have the right to terminate this Agreement and
the licenses granted to Celgene pursuant to Section 8.2(e) with respect to such Celgene Reverted Program, in which case the effects of termination set forth in Section 14.3(a) shall apply with respect to such Celgene Reverted Program as if
it were a Terminated Program. 
 (d) Term. 
 (i) With respect to each Independent Program, the Buy-In Rights described in this Section 3.11 shall terminate upon the later of (A) the end of the Option Term and (B) [**] years following
such time as such Independent Program became an Independent Program hereunder, unless the IND Acceptance has been achieved prior to such time (in which event, the Buy-In Party shall be entitled to exercise or waive the Buy-In Right in accordance
with this Section 3.11(b)) (the “Buy-In Right Term”). 

  
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 (ii) For purposes of clarity, if IND Acceptance has not been achieved under an Independent
Program during the Buy-In Right Term for such Independent Program, then (A) the Buy-In Party’s Buy-In Right with respect to such Independent Program shall terminate as of the end of such Buy-In Right Term, (B) such Independent Program
shall be deemed an Agios Reverted Program (if Agios was the Party independently Developing such Independent Program prior to the end of the Buy-In Right Term) or a Celgene Reverted Program (if Celgene was the Party independently Developing such
Independent Program prior to the end of the Buy-In Right Term), (C) the Independent Target shall be deemed an Agios Reverted Target or Celgene Reverted Target, as applicable, and (D) the licenses set forth in Sections 8.2(f) and 8.2(e),
respectively, shall apply with respect to such Agios Reverted Program or Celgene Reverted Program, as applicable. 

Section 3.12 Agios Reverted Programs. 
 (a) With respect to (i) each Discovery Program for a Development Candidate with respect to which (A) Celgene does not make a DC Commitment within the period required (including any deferral
period as described in Section 3.6(d)) or (B) if Celgene makes a DC Commitment, Celgene does not exercise the Celgene Program Option, (ii) each Picked Validated Program that is selected by Agios, or not selected as a Pick by either
Party, at the end of the Option Term, (iii) each Discovery Program that is not confirmed as a Validated Program at the end of the Option Term pursuant to Section 3.7, (iv) each Independent Program Developed by Agios for which Celgene
does not exercise its Buy-In Right at IND Acceptance or for which the Buy-In Right expires at the end of the Buy-In Right Term, and (v) each Discovery Program or Independent Program related to a Collaboration Target that is removed from the
Target List pursuant to Section 3.5(b) above and not added back to the Target List (either as a whole with respect to both Parties or partially with respect to Agios) pursuant to Section 3.5(a) or Section 3.5(b) (but, as provided in
Section 3.5(b)(iii), all Collaboration Compounds associated with such Discovery Program or Independent Program shall be deemed Residual Program Compounds) (each, an “Agios Reverted Program”), except as provided in this
Section 3.12 or Section 8.9, (x) all rights granted hereunder by Agios to Celgene with respect to such Agios Reverted Program shall terminate as further set forth below; and (y) all rights granted by Celgene to Agios with respect
to such Program (prior to it becoming an Agios Reverted Program) shall terminate but any licenses granted by Celgene to Agios pursuant to Section 8.2(f) shall apply with respect to such Agios Reverted Program. 

(b) Subject to Section 3.5 (to the extent a Collaboration Target is added back onto the Target List) and Section 8.8, Agios
shall have no further obligations to Celgene, and Celgene shall have no further rights from Agios, with respect to any Agios Reverted Program, including related Agios Reverted Compounds, Agios Reverted Targets or Agios Reverted Products. 

(c) The Parties agree that Programs within the Collaboration will have priority to all chemistry Developed in the Collaboration and that,
as such, Residual Program Compounds shall remain in the Collaboration until the end of the Option Term (or, if applicable, with respect to any Residual Program Compounds that have application to any Extended Program, at the end of any Post-Option
Extension). 

  
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 (i) During the Option Term, the Parties may test the Residual Program Compounds against the
Collaboration Targets that are the subject of Programs in the Collaboration. If any Residual Program Compound is determined by the JRC (or the JDC, as applicable) to be Active against a Collaboration Target remaining in the Collaboration, such
Residual Program Compound shall become a Collaboration Compound under the applicable Program. 
 (ii) In addition, at the end
of the Option Term, Agios shall use Commercially Reasonable Efforts to test a reasonable number of representative and available Residual Program Compounds against each Collaboration Target under a Validated Program that has not yet reached the DC
Selection Stage as of the end of the Option Term. Based on such test results, the JRC (or the JDC, if the JRC no longer remains in effect) by Mutual Consent shall determine whether such Residual Program Compounds are Active against any Collaboration
Target under any such Validated Program. If any such Residual Program Compound is found to be Active against a Collaboration Target under a Validated Program, such Residual Program Compound shall become a Collaboration Compound under such Validated
Program. Thereafter, with respect to all other Residual Program Compounds remaining on the Compound List, all rights related to such chemical entity(ies) granted by Agios to Celgene hereunder shall terminate and such chemical entity(ies) shall
thereafter no longer be deemed a Collaboration Compound(s) or Residual Program Compound(s) hereunder. 
 (d) With respect to any
Agios Reverted Program or Buy-In Program for which Agios is the Commercializing Party, if at any time after the Initial Phase (or the Extended Initial Phase, if applicable), Agios determines that any Back-Up Compound included in such Agios Reverted
Program or Buy-In Program does not meet the Clinical Candidate Guidelines, Agios shall be entitled to substitute, in place of such original Back-Up Compound, another Back-Up Compound that (i) is identified by the JRC (or the JDC, as applicable)
following Agios’ notification to such Committee of such failure, and (ii) is not already allocated to another Program under this Agreement. Any original Back-Up Compound that is replaced as provided in this section shall become a Residual
Program Compound. 
 (e) In determining which Collaboration Compounds are to be deemed Agios Reverted Compounds at the time a
Program becomes an Agios Reverted Program, no Collaboration Compounds shall be deemed Agios Reverted Compounds if they are already a Collaboration Compound for another Program within the Collaboration, but instead such Collaboration Compound shall
remain part of such other Program. 
 Section 3.13 Initial Target Indication in Oncology Field. The Parties
acknowledge and agree that each Program shall initially be directed towards Target Indications in the Oncology Field. Unless otherwise mutually agreed by the Parties, the first Clinical Trial in patients conducted by or on behalf of Celgene under a
Licensed Program shall be for a Target Indication in the Oncology Field. It is understood by the Parties that, subject to compliance with the prior sentence, either Party may identify other Indications outside of the Oncology Field for such
Collaboration Compound, Licensed Compound or Licensed Product. 
 Section 3.14 Companion Diagnostics. 

  
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 (a) Development of Companion Diagnostic. The Parties may mutually agree to Develop
and/or Commercialize a Companion Diagnostic for use with a Collaboration Compound, Licensed Compound or Licensed Product; provided that, unless the JRC (or the JDC, as applicable) agrees by Mutual Consent otherwise, the Commercializing
Party (or, with respect to a Split Program, the Party designated by the JDC) will use a Third Party Contractor reasonably acceptable to both Parties to perform all Development and Commercialization for the Companion Diagnostic. In such event:

 (i) the definition of such “Collaboration Compound,” “Licensed Compound” or “Licensed Product”
shall and hereby does include the Companion Diagnostic for purposes of defining Agios Patent Rights, Celgene Patent Rights and Collaboration Patent Rights, and each of the licenses granted to a Party under Section 8.1 or 8.2, as applicable,
with respect to such Collaboration Compound, Licensed Compound or Licensed Product; and 
 (ii) All profits of the
Commercializing Party (or the Party designated by the JDC for a Split Program) with respect to such Companion Diagnostic shall be [**] by the Parties pursuant to a mechanism agreed to by the Parties at the time the Third Party Contractor is
appointed. 
 (b) Separate Obligations. No separate milestones shall be owed by Celgene to Agios pursuant to
Section 9.6 with respect to a Companion Diagnostic. Upon termination of the Program or reversion of rights to a Party with respect to a Program hereunder in association with which the Companion Diagnostic was Developed or Commercialized, in
addition to the effects of such termination or reversion set forth in Section 14.3, separate transitional activities shall be undertaken with respect to the Companion Diagnostic to ensure that the appropriate Regulatory Approvals, Manufacturing
Technology or other Know-How or Patent Rights necessary for the Development, Manufacture and/or Commercialization of such Companion Diagnostic shall be transferred to the Party to whom the rights to the underlying Program are transferred to the same
extent as Regulatory Approvals, Manufacturing Technology or other Know-How or Patent Rights otherwise associated with such Program are transferred. 
 (c) No Other Diagnostics. For purposes of clarity, unless otherwise mutually agreed by the Parties, neither Party shall have any right, under the licenses granted to such Party pursuant to
Section 8.1 or 8.2 and notwithstanding the definition of “Field” hereunder, to Develop, Manufacture and/or Commercialize any biomarker or diagnostic product for use with a Collaboration Compound, Licensed Compound or Licensed Product,
other than a Companion Diagnostic pursuant to this Section 3.14. 
 Section 3.15 Records; Tech Transfer.

 (a) Agios shall maintain in all material respects, and shall require its Third Party Contractors to maintain in all material
respects, complete and accurate records in segregated books of all work conducted in furtherance of any Program and all results, data and developments made in conducting such activities. Such records shall be complete and accurate and shall fully
and properly reflect all such work done and results achieved in sufficient detail and in good scientific manner appropriate for patent and regulatory purposes. Agios shall require the applicable study sites to maintain original source documents from
Clinical Trials of 

  
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Collaboration Compounds and Licensed Compounds, until either (i) the end of the Discovery Term for such Program, if Celgene does not exercise any applicable Celgene Program Option or obtain
an exclusive license under Section 8.2 to such Program, and (ii) for at least [**] years (or such longer period as is commercially reasonable under the circumstances, taking into account maintenance requirements under applicable Law)
following completion of the Development activities undertaken by Agios or its Third Party Contractors under the Licensed Program, if Celgene does exercise such option or take an exclusive license under Section 8.2 to such Program;
provided that Celgene or Agios shall be entitled to obtain copies of such source documents at the end of such [**]-year period. 
 (b) Celgene shall have the right, during normal business hours and upon reasonable notice, to inspect and copy (or request Agios to copy) all records of Agios or its Third Party Contractors, as
applicable, maintained in connection with the work done and results achieved in the performance of activities under a Program, but solely to the extent access to such records is necessary for Celgene to exercise its rights under this Agreement with
respect to the applicable Program. 
 (c) As soon as reasonably practical after Celgene exercises the Celgene Program Option for
a Program or obtains an exclusive license under Section 8.2 to a Program and thereafter upon Celgene’s reasonable request during the Term, Agios shall transfer to Celgene[**] copies of all Agios Know-How and Agios Collaboration Know-How
related to such Program. In addition, Agios shall provide reasonable assistance, including making its personnel reasonably available for meetings or teleconferences to answer questions and provide technical support to Celgene with respect to the use
of such Agios Know-How and Agios Collaboration Know-How in the Development, Manufacture and Commercialization of the applicable Licensed Compounds or Licensed Products. The costs and expense incurred by Agios in connection with such assistance shall
be provided [**]. 
 Section 3.16 Third Parties. 

(a) Use of Third Party Contractors. If Agios desires to use any Third Party Contractors to conduct any of its Development,
Commercialization or other Collaboration activities hereunder, or if Celgene desires to use any Third Party Contractors to conduct any of its Development, Commercialization or other Collaboration activities hereunder, such Party must comply with the
obligations of Section 8.4(a)(ii)(A) through (D), even to the extent no sublicense of rights is granted to such Third Party. 
 (b) Third Party Collaborators. If Agios desires to enter into any collaboration with Third Parties involving the Metabolome, Agios shall implement guidelines to (i) limit or prohibit its
employees or consultants from working on activities under the Collaboration hereunder and under Agios’ Third Party collaboration where the knowledge gained from one project may be inappropriately used in the other (whether intentionally or
unintentionally); and (ii) use separate laboratories, or separate parts of a lab, to perform Agios’ obligations hereunder. 

  
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 Article IV 
 Manufacture and Supply 
 Section 4.1 Pre-Clinical, Clinical and
Commercial Supply. Except as set forth below in this Section 4.1 or Section 4.2, unless otherwise determined by the JSC, JRC, JDC or JCC, as applicable, or as otherwise mutually agreed by the Parties: 

(a) Discovery Term. Agios shall be solely responsible for Manufacturing, or having Manufactured by its designee, all pre-clinical
and clinical supply of any Collaboration Compounds, Licensed Compounds and/or Licensed Products under a Discovery Program, including any necessary raw materials or other components, necessary for use by both Parties to conduct each Discovery Program
through the Discovery Term for such Discovery Program and, solely with respect to Licensed Programs for which Celgene exercises the Celgene Program Option, through Completion of Phase I MAD. Agios shall be solely responsible for all Manufacturing
Costs associated with the activities described in this Section 4.1(a). 
 (b) Picked Products and Co-Commercialized
Products. After the Discovery Term, Celgene shall be solely responsible for all Manufacturing activities with respect to each Picked Validated Program selected by Celgene. After the Discovery Term or after Completion of Phase I MAD, if
applicable, Celgene shall be solely responsible for all Manufacturing activities with respect to each Co-Commercialized Program. Celgene shall be solely responsible for all Manufacturing Costs associated with the activities described in this
Section 4.1(b). 
 (c) Split Products. 
 (i) After the Discovery Term or after Completion of Phase I MAD, if applicable, with respect to each Split Program, (A) Celgene shall be solely responsible for all Manufacturing activities for supply
of Split Compounds and Split Product in the ROW Territory (or Celgene’s activities in the US Territory in accordance with the license under Section 8.2(c)(i)(B)), and (B) Celgene shall Manufacture Agios’ supply of Split Compounds
and Split Products in the US Territory (or Agios’ activities in the ROW Territory in accordance with the license under Section 8.2(c)(ii)(B)), pursuant to the terms and conditions of a supply agreement (including customary terms such as
forecasting procedures and allocation of supply) to be negotiated in good faith and mutually agreed upon by the Parties (the “Supply Agreement”), and Celgene shall establish and engage a Third Party manufacturer as a secondary
source of clinical and commercial supply of Split Compounds and/or Split Products for the US Territory; provided that in the event of a supply failure under the Supply Agreement (to be further defined in the Supply Agreement in terms
of failure to provide adequate and/or timely supply), the Supply Agreement shall permit Agios to, at Agios’ election, (A) if Celgene fails to supply, directly purchase supply of Split Compounds and Split Products from the applicable
manufacturer, or (B) if Celgene and its Third Party Manufacturer(s) fail to supply, engage and obtain supply from Third Party suppliers designated by Agios; provided further that with respect to Agios’ right under the
Supply Agreement to purchase any supply of Split Compounds and Split Products from Third Parties, Celgene shall reasonably cooperate with Agios and transfer to such Third Party supplier all Manufacturing Technology Controlled by Celgene used to, and
reasonably necessary for such Third Party to, Manufacture such Split Compound or Split Product, as more specifically set forth in the Supply Agreement. 

  
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 (ii) Celgene shall be solely responsible for all Manufacturing Costs associated with the
commercial supply of Split Compounds and Split Product in the ROW Territory. Agios shall be solely responsible for all Manufacturing Costs associated with the commercial supply of Split Compounds and Split Products in the US Territory, including any
costs incurred by Celgene for such Manufacturing that are specifically related to the US Territory; provided that any supply provided by Celgene to a sublicensee of Agios shall be provided at Celgene’s Manufacturing Cost plus
[**]%. Manufacturing Costs associated with clinical supply of Split Compounds and Split Products (including pre-clinical and clinical scale-up costs) shall be shared in accordance with Section 9.4(b) if deemed Global Development Costs or paid
by the Commercializing Party if deemed Territory-Specific Development Costs. Notwithstanding the foregoing, Manufacturing Scale-Up Costs for Split Compounds and Split Products for the Territory shall be deemed Global Development Costs and shared
pursuant to Section 9.4. 
 (d) Buy-In Products. The Commercializing Party shall be solely responsible for all
Manufacturing activities for supply of Buy-In Compounds and Buy-In Products necessary for use by both Parties to conduct any Buy-In Program. The Commercializing Party’s Manufacturing Costs associated with the activities described in this
Section 4.1(d) following the Development Cost Initiation Date to the extent associated with clinical supply of Buy-In Compounds and Buy-In Products (including pre-clinical and clinical scale-up costs) shall constitute Development Costs that
will be shared by the Parties pursuant to Section 9.4(c); and the Commercializing Party shall be solely responsible for all other Manufacturing Costs associated with the activities described in this Section 4.1(d), including all
Manufacturing Costs for commercial supply of Buy-In Compounds and Buy-In Products and all Manufacturing Scale-Up Costs. 
 (e)
Independent Compounds. The Party conducting an Independent Program shall be solely responsible for all Manufacturing activities for supply of Independent Compounds necessary for use by such Party in the Independent Program. The Party
conducting such Independent Program shall be solely responsible for all Manufacturing Costs associated with the activities described in this Section 4.1(e). 
 (f) Celgene Reverted Products. Celgene shall be solely responsible for all Manufacturing activities for supply of Celgene Reverted Compounds and Celgene Reverted Products necessary for use by
Celgene in a Celgene Reverted Program. Celgene shall be solely responsible for all Manufacturing Costs associated with the activities described in this Section 4.1(f). 
 (g) Third Party Manufacturers. If Agios uses any Third Party to fulfill its Manufacturing obligations under Section 4.1(a) with respect to any supply to be used in any Development or
Commercialization activities under a Licensed Program following the Discovery Term for such Program (other than with respect to a Buy-In Program for which Agios is the Commercializing Party and, to the extent that Agios has the right to use a Third
Party to fulfill its Manufacturing obligations, other than a Split Program in the US Territory), or following Celgene’s exercise of the Celgene Program Option, as applicable, the Third Party and the terms of the agreement with such Third Party
must be reasonably acceptable to the JDC by Mutual Consent. 

  
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 (h) No Reimbursement. For clarity, Celgene shall not be responsible for any
Manufacturing Costs associated with a Discovery Program or Licensed Program incurred prior to Celgene’s exercise of the Celgene Program Option or Development Cost Initiation Date with respect to such Program. 

Section 4.2 Transfer of Manufacturing Responsibility. 

(a) Transfer. Notwithstanding the foregoing, the Parties may mutually agree to have Agios transfer Manufacturing responsibility
with respect to any Discovery Program or Licensed Program to Celgene at any time. Upon any transfer of Manufacturing responsibility to Celgene, Agios[**] shall (i) transfer, or have transferred, to Celgene or its designee, pursuant to a
technology transfer plan to be mutually agreed by the Parties, all Manufacturing Technology Controlled by Agios and used in Manufacturing Collaboration Compounds, Licensed Compounds and/or Licensed Products under the applicable Program at the time
of such transfer, and (ii) provide reasonable assistance in connection with the transfer of such Manufacturing responsibility to Celgene or its designee. 
 (b) Celgene Responsibility. Upon transfer of Manufacturing responsibility to Celgene under this Section 4.2 with respect to a Discovery Program or Licensed Program, Celgene shall be solely
responsible for Manufacturing all Collaboration Compounds, Licensed Compounds and Licensed Products under such Discovery Program or Licensed Program, including both preclinical and clinical materials and commercial product, subject to any cost
sharing as described in Section 4.1. 
 Section 4.3 Manufacturing Efforts. The Party that is responsible for
Manufacturing hereunder shall use Commercially Reasonable Efforts to ensure adequate manufacturing capacity to meet forecast demand for such Collaboration Compounds, Licensed Compounds and/or Licensed Products, as applicable, including, if deemed
necessary by the JRC, JDC or JCC, as applicable, the establishment of an alternative supply source. Such Party shall also use Commercially Reasonable Efforts to ensure adequate pre-clinical, clinical and commercial supply of such Collaboration
Compounds, Licensed Compounds and Licensed Products, as applicable, for both Parties to Develop and/or Commercialize, as applicable, such Collaboration Compounds, Licensed Compounds and Licensed Products as contemplated under the applicable
Discovery Plan, Development Plan and/or Commercialization Plan. 
 Section 4.4 Agios Reverted Compounds. If Celgene
or the JDC determines that a Clinical Trial using a Licensed Compound or Licensed Product in combination with an Agios Reverted Compound or Agios Reverted Product would be necessary or useful under a Licensed Program, upon notice from Celgene or the
JDC, Agios shall consider such combination in good faith and, subject to Agios’ approval in its sole discretion, Agios shall use Commercially Reasonable Efforts to procure adequate quantities of pre-clinical and clinical supply of any Agios
Reverted Compound or Agios Reverted Product for Celgene to conduct such combination Clinical Trial; provided, however, that (a) the Parties shall agree by Mutual Consent on the appropriate protocol for such Clinical Trial;
(b) Celgene shall regularly update Agios on the progress of such Clinical Trial, shall promptly report to Agios any safety issues arising under such Clinical Trial, shall consult and coordinate with Agios with respect to any termination of such
Clinical Trial, and shall provide to Agios all data and results generated in the course of such 

  
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Clinical Trial and a final report following completion thereof, which shall be Celgene Confidential Information but which may be used by Agios in the conduct of the applicable Agios Reverted
Program; and (c) Celgene will pay Agios its Manufacturing Costs for such pre-clinical and clinical supply of Agios Reverted Compounds or Agios Reverted Products. 
 Article V 
 Regulatory Matters 

Section 5.1 Lead Responsibility for Regulatory Interactions. Except as may otherwise be mutually agreed by the Parties or the
JSC, JRC, JDC or JCC, as applicable, and subject to oversight by the JSC, JRC, JDC or JCC, as applicable to the extent such Committee has oversight over a Program: 
 (a) Discovery Term. Agios shall have lead responsibility for all Regulatory Interactions with respect to the Collaboration Compounds, Licensed Compounds and Licensed Products Developed under
(A) each Discovery Program through the Discovery Term and (B) each Split Program or Co-Commercialized Program through Completion of Phase I MAD; provided that, with respect to each Co-Commercialized Program, Celgene may, by
written notice to Agios, assume such responsibility with respect to such Program (and the Collaboration Compounds, Licensed Compounds and Licensed Products Developed under such Program) following the Discovery Term for such Program. Agios shall own
all INDs and other submissions made to Regulatory Authorities during the time that it has such lead responsibility. 
 (b)
Co-Commercialized Programs. Promptly following Completion of Phase I MAD with respect to each Co-Commercialized Program (or earlier as set forth in Section 5.1(a) above), Celgene shall have lead responsibility for all Regulatory
Interactions with respect to the Collaboration Compounds, Licensed Compounds and Licensed Products Developed or Commercialized under each Co-Commercialized Program. 
 (c) Picked Validated Programs. Promptly following the Discovery Term, Celgene shall have sole responsibility for all Regulatory Interactions with respect to the Collaboration Compounds, Licensed
Compounds and Licensed Products Developed or Commercialized under each Picked Validated Program selected by Celgene. 
 (d)
Buy-In Programs. With respect to each Buy-In Program, the Commercializing Party for a Buy-In Program shall have lead responsibility for all Regulatory Interactions with respect to the Buy-In Compounds and Buy-In Products Developed or
Commercialized under such Buy-In Program. 
 (e) Independent Programs; Celgene Reverted Programs. With respect to each
Independent Program, the Party conducting the Independent Program shall have lead responsibility for all Regulatory Interactions with respect to the Independent Compounds Developed under such Independent Program. At such time as an Independent
Program becomes a Celgene Reverted Program, Celgene shall have sole responsibility for all Regulatory Interactions with respect to the Celgene Reverted Compounds and Celgene Reverted Products Developed or Commercialized under such Celgene Reverted
Program. 

  
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 (f) Split Programs. With respect to each Split Program following the Discovery Term,
(A) Agios shall have lead responsibility for all Regulatory Interactions with Regulatory Authorities in the US Territory with respect to the Collaboration Compounds, Licensed Compounds and Licensed Products Developed or Commercialized under
such Split Program; and (B) Celgene shall have lead responsibility for all Regulatory Interactions with Regulatory Authorities in the ROW Territory with respect to the Collaboration Compounds, Licensed Compounds and Licensed Products Developed
or Commercialized under such Split Program; provided that the JDC may determine by Mutual Consent that one Party shall have lead responsibility for all Regulatory Interactions in the Territory with respect to a Global Study.

 (g) Transfer of Regulatory Responsibility. At such time as Celgene is assigned or is entitled to assume lead or sole
responsibility for Regulatory Interactions with respect to a Program under this Section 5.1, upon Celgene’s written request to Agios, 
 (i) Agios shall (1) at Celgene’s option, either close or inactivate its IND(s) for the Licensed Compounds Developed under such Program, or transfer such IND(s) to Celgene, [**] and (2) with
Celgene input, complete all relevant regulatory and clinical activities related to such IND and/or NDA as required for Celgene to assume regulatory ownership, as applicable; provided that, with respect to a Split Program, the foregoing
shall not apply to the US Territory. 
 (ii) With respect to new INDs to be filed after the date Celgene assumes such lead or
sole responsibility for such Program, Celgene shall be responsible for the preparation and filing of all subsequent INDs and other regulatory filings with respect to any subsequent Development or Commercialization for such Licensed Compounds or
Licensed Products in such Program. 
 (iii) Agios shall provide to Celgene, [**] and in support of any such Celgene IND or
other regulatory filings, all relevant clinical and non-clinical data reasonably requested by Celgene or a Regulatory Authority, including CMC, pharmacology and toxicology generated by Agios with respect to such Licensed Compounds or Licensed
Products. 
 (h) Regulatory Interactions Defined. For purposes of this Agreement, “Regulatory
Interactions” means (i) monitoring and coordinating all regulatory actions, communications and filings with, and submissions to, all Regulatory Authorities with respect to a Program and (ii) interfacing, corresponding and meeting
with the Regulatory Authorities with respect to a Program. 
 Section 5.2 Participation Rights. 

(a) Review of Regulatory Documentation. To the extent the JRC or JDC has oversight of a Program, each Party shall keep the JRC and
JDC, as applicable, reasonably informed in connection with the preparation of all Regulatory Documentation, Regulatory Authority review of Regulatory Documentation, Regulatory Approvals, annual reports, including annual safety reports to the
respective health authorities, annual re-assessments, any subsequent variations and changes to labeling, in each case with respect to Collaboration Compounds, Licensed Compounds and Licensed Products. Each Party shall respond within a reasonable
time frame to all reasonable inquiries by the other Party with respect to any information provided pursuant to this Section 5.2(a) (and sufficiently promptly for the other Party to provide meaningful input with respect to responses to
Regulatory Authorities). 

  
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 (b) Participating in Meetings. The Party not having the lead responsibility for
Regulatory Interactions in a country with respect to a Split Product or Buy-In Product shall have the right to have two senior, experienced employees reasonably acceptable to the responsible Party, participate as an observer in material or scheduled
face-to-face meetings, video conferences and any teleconferences with the applicable Regulatory Authority, and shall be provided with advance access to the responsible Party’s material documentation prepared for such meetings. 

(c) Review. Prior to submission of material correspondence to any Regulatory Authority with respect to a Split Product or Buy-In
Product, the Party having the lead responsibility for Regulatory Interactions shall, sufficiently in advance for the other Party to review and comment, provide the other Party any material correspondence with the Regulatory Authority related to such
meetings. The responsible Party shall also provide the other Party with copies of any material correspondence with Regulatory Authorities relating to Development of, or the process of obtaining Regulatory Approval for, the Split Product in such
Party’s territory (i.e., the US Territory if the responsible Party is Agios, or the ROW Territory if the responsible Party is Celgene) or the Buy-In Product, and respond within a reasonable time frame to all reasonable inquiries by the
other Party with respect thereto. 
 Section 5.3 Global Safety Database; Pharmacovigilance Agreement. At a time to
be mutually agreed by the Parties, the Parties shall establish, hold and maintain a single electronic system for the collection and storage of all safety information for each Licensed Compound and/or Licensed Product (the “Global Safety
Database”). Such database shall comply in all material respects with all Laws reasonably applicable to pharmacovigilance anywhere where the Licensed Compounds and Licensed Products are being or have been Developed or Commercialized. Unless
the Parties otherwise agree in the Pharmacovigilance Agreement, Agios shall initially be responsible for the Global Safety Database, and on a Program-by-Program basis Celgene shall assume control following the transfer of all INDs for such Program
to Celgene (excluding Buy-In Programs for which Agios is the Commercializing Party); provided that the JDC shall determine by Mutual Consent which Party shall be responsible for the Global Safety Database for Split Programs, with the
other Party providing support to such first Party. The Party not maintaining the Global Safety Database may hold and maintain a parallel safety database for any Licensed Compound or Licensed Product as needed or required according to applicable
Laws. The Parties will use Commercially Reasonable Efforts to negotiate a pharmacovigilance agreement (the “Pharmacovigilance Agreement”) to govern cooperation between the Parties that will enable each of them to comply with its
respective obligations under applicable Laws and to satisfy its duty of care with respect to Licensed Compounds and Licensed Products, including with regard to ownership of the Global Safety Database, adverse event data collection, analysis and
reporting. The Pharmacovigilance Agreement will be entered by the Parties either prior to the FPD for the first Clinical Trial related to a Discovery Program or Licensed Program or, at Celgene’s election, upon transfer of all INDs for such
Program to Celgene. 

  
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 Article VI 
 Commercialization 
 Section 6.1 Commercialization Responsibilities
for Licensed Products. 
 (a) Celgene Responsibility for Picks & Celgene Reverted Products. With respect to
Licensed Products under a Picked Validated Program selected by Celgene and Celgene Reverted Products, (i) Celgene shall have sole responsibility for the Commercialization of such Licensed Products or such Celgene Reverted Products, including
distribution, marketing and promotion thereof, and (ii) all business decisions regarding Commercialization of such Licensed Products and such Celgene Reverted Products, including the branding, design, sale, pricing, and promotion thereof, shall
be within the sole discretion of Celgene. 
 (b) Responsibility for Co-Commercialized Products. With respect to
Co-Commercialized Products, subject to oversight by the JCC, (i) Celgene shall have sole responsibility for the Commercialization of such Co-Commercialized Products, including distribution, marketing and promotion thereof, except that Agios
shall be responsible for undertaking the Commercialization Activities assigned to Agios under the Commercialization Plan for such Co-Commercialized Product pursuant to Section 6.3, and (ii) all business decisions regarding
Commercialization of such Co-Commercialized Products, including the branding, design, sale, pricing, and promotion thereof, shall be within the sole discretion of Celgene. 
 (c) Responsibility for Split Products. With respect to Split Products, subject to oversight by the JCC, (1) Agios shall have sole responsibility for the Commercialization of Split Products in
the US Territory, including distribution, marketing and promotion thereof; (2) Celgene shall have sole responsibility for the Commercialization of Split Products in the ROW Territory, including distribution, marketing and promotion thereof
(unless and until any Agios Opt-Out, in which event Celgene shall have sole responsibility for the Commercialization of Split Products in the entire Territory if Celgene elects to assume US Territory rights pursuant to Section 3.10(c)); and
(3) the Commercializing Party shall make all business decisions regarding Commercialization of Split Products, including the branding, design, sale, pricing, and promotion thereof (subject to consultation with, and due consideration of the
non-Commercializing Party’s comments with respect to such Split Products, including comments on marketing strategies). Notwithstanding the foregoing, 
 (i) On an activity-by-activity basis, either Party may propose to the other that they undertake joint Commercialization activities, and, if both Parties agree to do so, the costs associated with such
joint activities (A) will be included in the approved budget under the applicable Commercialization Plan pursuant to Section 6.2(a)(i) and (B) will be deemed Global Development Costs and shared in accordance with Section 9.4(b).

 (ii) Following the receipt of the Regulatory Approval for a Split Product, the Parties shall not pursue the Development and
Commercialization of a Second Generation Product except through Mutual Consent and coordination of the Parties (or the applicable Committees). 

  
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 (iii) If either Party proposes to take any Commercialization action (or make any business
decision) that the other Party reasonably determines is reasonably likely to have a material adverse impact on the Commercialization of a Split Product in the other Party’s portion of the Territory, such proposing Party shall not proceed with
such Commercialization action (or such business decision) unless approved by the JCC (with any disputes resolved in accordance with the dispute resolution procedure of Section 2.8, including [**] having the final decision-making authority to
the extent provided in Section 2.8(b)). 
 (d) Responsibility for Buy-In Products. With respect to Buy-In Products,
subject to oversight by the JCC, (i) the Commercializing Party shall have sole responsibility for the Commercialization of such Buy-In Products, including distribution, marketing and promotion thereof, and (ii) all business decisions
regarding Commercialization of such Buy-In Products, including the branding, design, sale, pricing, and promotion thereof, shall be within the sole discretion of the Commercializing Party. 

(e) Sales. The Commercializing Party will book all sales of the applicable Licensed Product or Celgene Reverted Product and will
have the sole responsibility for the sale, invoicing and distribution of such Licensed Product or Celgene Reverted Product in the Territory. 
 Section 6.2 Commercialization Plan. 
 (a) Initial Commercialization
Plan. 
 (i) Commercialization under each Co-Commercialized Program in the US Territory and each Split Program shall be
governed by a Commercialization Plan (the “Commercialization Plan”) that describes the Commercialization activities (including pre-launch and launch activities, if applicable) to be undertaken with respect to each such Licensed
Product. Except as provided in Section 6.1(c)(i) above or Section 6.2(a)(ii) below, the Commercialization Plan need not include a budget. 
 (ii) Commencing no later than [**] months prior to the anticipated commercial launch of the first Co-Commercialized Product in the US Territory and thereafter at least [**] days prior to the start of each
Calendar Year, Celgene shall prepare a Commercialization Plan for each Co-Commercialized Product in the US Territory in the next Calendar Year. Such Commercialization Plan for each Co-Commercialized Product shall include a budget for Field-Based
Costs of Agios and shall include in reasonable detail the type and allocation of Commercialization Activities between the Parties with respect to such Co-Commercialized Product in the US Territory pursuant to Section 6.3. 

(iii) Commencing no later than [**] months prior to the anticipated commercial launch of the first Split Product in the Territory and
thereafter at least [**] days prior to the start of each Calendar Year, Agios with respect to the US Territory and Celgene with respect to the ROW Territory shall prepare the initial Commercialization Plan for each Split Product, with input and
guidance from the JDC and JCC. Such Commercialization Plan shall describe Commercialization activities to be undertaken by Agios in the US Territory and Celgene in the ROW Territory. In connection with JCC approval under Section 6.2(b) below,

  
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Agios shall have final decision-making authority with respect to any matters to the extent related to the US Territory, Celgene shall have final decision-making authority with respect to any
matters to the extent related to the ROW Territory, and neither Party (nor the JCC) may amend the Commercialization Plan as it relates to the other Party’s portion of the Territory except by Mutual Consent. 

(b) JCC Approval; Amendments. The JCC shall approve the first Commercialization Plan for each Co-Commercialized Program in the US
Territory and each Split Program no later than [**] prior to the anticipated commercial launch of each Licensed Product under such Licensed Program. Thereafter, the JCC shall review the Commercialization Plan not less frequently than [**] and shall
propose updates to the Commercialization Plan for [**]. Either Party may also develop and submit to the JCC for review from time to time other proposed amendments to the applicable Commercialization Plan. The initial Commercialization Plan, and any
amendments and updates to the Commercialization Plan, including any budgets for Co-Commercialized Products in the US Territory contained in the Commercialization Plan, shall be effective upon the approval of the JCC. 

Section 6.3 Co-Commercialization Activities. 
 (a) General. The JCC shall determine the type and scope of field-based marketing efforts to be used for Commercialization of each Co-Commercialized Product in the US Territory (e.g., sales
force (and the number of physicians to be called on and call frequency), field-based medical affairs, and field-based market access resources) (collectively, “Commercialization Activities”), and the Commercialization Plan for each
Co-Commercialized Product in the US Territory shall set forth such efforts for each Indication which is marketed in the US Territory. Celgene shall be responsible for all Field-Based Costs incurred by Agios as provided in Section 9.5(d).

 (b) Allocation of Activities. The Commercialization Plan will allocate to each Party its portion of the total
Commercialization Activities for each Co-Commercialized Product in the US Territory; provided that, unless otherwise agreed to by the Parties, Agios will be allocated approximately [**]% of the Commercialization Activities in the US
Territory. The Commercialization Plan will attempt to provide that Agios’ assigned Commercialization Activities are distributed geographically within the US Territory in a manner reasonably consistent with the distribution of the U.S.
population and that each Party’s detailing effort, if applicable, will be directed to physicians of similar prescribing potential but shall take into account the competitive situation of the applicable Co-Commercialized Product. In overseeing
the Commercialization Activities, the JCC will take into account the Co-Commercialized Product’s customer base and call volume measured against the customer base, geographic scope of activities, and the competitive market for the
Co-Commercialized Product. 
 (c) Sales Force. To the extent the Commercialization Activities include detailing efforts,
the JCC shall determine the number of sales representatives needed to carry out the required Commercialization Activities for each Co-Commercialized Program. Each Party, in its sole discretion, shall create a field management structure for its sales
effort. Each sales representative shall have a sales territory that allows such sales representative to perform a reasonable number of details within a reasonable geographic area (i.e., without
overly-

  
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burdensome travel requirements but avoiding sales representatives detailing the same persons). The effort of the Agios and Celgene sales forces in promoting Co-Commercialized Products will be
organized under the supervision of the JCC as to qualifications of sales representatives and field-based sales managerial personnel and the timing of hiring in light of the then-current Commercialization Plan; provided that the
Commercialization Plan shall identify the portion of the detailing effort to be undertaken by Agios no later than [**] months before the planned date of the NDA submission in the US Territory. At Celgene’s election, Agios shall use Commercially
Reasonable Efforts to have hired, no later than [**] months before the applicable PDUFA date, [**]% of Agios’ sales force planned to be available upon launch of the Co-Commercialized Product in the US Territory and to have Agios’ sales
force trained within [**] months of hiring. 
 (d) Training Materials and Sessions. The JCC will develop
Co-Commercialized Product-specific training materials and arrange for provision of such materials to each Party’s sales forces, if applicable. The JCC will develop a sales training program directed towards the Co-Commercialized Products in the
US Territory. Unless otherwise mutually agreed by the Parties, Celgene and Agios sales representatives will participate in a launch meeting(s) (which may be held together or separately) for each Co-Commercialized Product in the US Territory, which
shall include training sessions of Co-Commercialized Product-specific sales skills with respect to the approved indications for the Co-Commercialized Products. Subsequent to launch, Celgene and Agios shall periodically hold meetings with Agios and
Celgene field management (down to and including district managers or their equivalents who are directly supervising territory sales representatives) to coordinate promotion of the Co-Commercialized Products in the US Territory. As requested by
Agios, Celgene shall make its management, marketing, training and other personnel reasonably available to participate in Agios’ national and regional sales meetings and Co-Commercialized Product-training events for the US Territory. 

(e) Promotional Materials. Celgene, [**] shall provide Agios with sales, promotional and communication materials sufficient to
permit Agios to perform the Commercialization Activities in a manner consistent with the Commercialization Activities performed by Celgene. Agios will utilize only those sales, promotional and communication materials provided to Agios by Celgene and
will not utilize any other materials relating to or referring to the Co-Commercialized Product. 
 (f) Other Obligations.
In conducting the Commercialization Activities, the Parties will comply with all applicable Laws, applicable industry professional standards and compliance policies of Celgene that have been previously furnished to Agios, as the same may be updated
from time to time and provided to Agios. Celgene will reasonably assist Agios in training sales representatives in such standards. Neither Party shall make any claims or statements with respect to the Co-Commercialized Products that are not strictly
consistent with the product labeling and the sales and marketing materials approved for use pursuant to the Commercialization Plan. 

  
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 (g) Termination of Commercialization Activities. 

(i) Agios shall have the right to terminate its Commercialization obligations with respect to any Co-Commercialized Product by providing
at least [**] months’ prior written notice to Celgene (or sooner as Celgene may determine, in its sole discretion). Upon exercise of such termination right, effective upon the expiration of such [**]-month (or, if applicable, shorter) notice
period, Agios’ obligations to perform Commercialization Activities under this Section 6.3 shall terminate, and Celgene shall no longer be required to maintain the Commercialization Plan for such Co-Commercialized Product. 

(ii) On a Co-Commercialized Product-by-Co-Commercialized Product basis, on the date on which in the US Territory there is [**] Generic
Product relating to such Co-Commercialized Product, then Celgene shall no longer be responsible for Agios’ Field-Based Costs with respect to such Co-Commercialized Product, and Agios shall have no further obligation to perform the
Commercialization Activities for such Co-Commercialized Product or maintain a sales force for the purpose of promoting such Co-Commercialized Product. 
 (iii) As described in Section 3.10(c)(i), upon a Split Program becoming a Co-Commercialized Program, Agios shall not be entitled to perform Commercialization Activities for such Program. Agios’
Commercialization Activities shall also terminate as provided in Section 15.5. 
 Section 6.4 Trademarks.

 (a) The JCC shall select the trademark(s) to be used in connection with the marketing and sale of Co-Commercialized Products
in the US Territory (provided that such trademark(s) shall not contain the name of either Party except with such Party’s prior written consent), and the Parties shall adhere to the use of such trademark(s) in their
Commercialization of Co-Commercialized Products in the US Territory hereunder, to the extent permitted by Law. 
 (b) Celgene
shall own all product trademarks for all Licensed Products for which Celgene is the Commercializing Party, including for the Split Product in the ROW Territory. Agios shall own all product trademarks for any Split Product in the US Territory and for
any Buy-In Product with respect to which Agios is the Commercializing Party. 
 (c) Celgene shall use, in connection with all
packaging, literature, labels and other printed matters, to the extent permitted by Law, an expression to the effect that the Licensed Products were developed under license from Agios, together with the Agios logo, and Agios hereby grants Celgene a
license to use Agios’ name and logo to comply with such obligation. 
 Article VII 

Diligence 

Section 7.1 Collaboration Activities. 
 (a) General. Each Party shall use Commercially Reasonable Efforts to perform all Collaboration activities for which such Party is responsible hereunder in compliance with the applicable Discovery
Plan, Development Plan or Commercialization Plan, including any budget(s) and timeframe(s) set forth therein and including making available those resources set forth in any applicable Discovery Plan, Development Plan or Commercialization Plan, and
the terms of this Agreement. 

  
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 (b) Compliance with Laws. Each Party shall: 

(i) perform its obligations under this Agreement in a scientifically sound and workmanlike manner; and 

(ii) carry out all work done in the course of the Collaboration in compliance with all applicable Laws governing the conduct of such
work. 
 Section 7.2 Diligence Obligations. 

(a) In addition to the diligence obligations set forth in Section 7.1, 

(i) the Commercializing Party with respect to each Buy-In Program, 

(ii) Agios with respect to each Split Program in the US Territory, and 

(iii) Celgene with respect to each Split Program in the ROW Territory and each Co-Commercialized Program, 

shall use Commercially Reasonable Efforts to Develop and achieve Regulatory Approval for Licensed Products under such Program in each of the Major
Markets (or, with respect to Split Programs, in the US Territory with respect to Agios’ obligations and in Japan and the Major European Countries with respect to Celgene’s obligations) and, following such Regulatory Approval, to
Commercialize such Licensed Products in each of the Major Markets (or, with respect to Split Programs, in the US Territory with respect to Agios’ obligations and in Japan and the Major European Countries with respect to Celgene’s
obligations). 
 (b) A breach of the diligence obligations set forth in this Section 7.2 shall be deemed a material breach
and shall be subject to termination under Section 14.2(b)(i). Notwithstanding the foregoing, the Parties acknowledge that it might be commercially reasonable, under certain circumstances, for the applicable Commercializing Party to determine
not to launch a Licensed Product in [**] Major Markets, and failure under such circumstances to launch such Licensed Product shall not be a breach of this Agreement. 
 Section 7.3 Celgene’s Picks. The Parties agree that, if Celgene has not obtained at least a submission of an IND with respect to a Picked Validated Program selected by Celgene by the [**]
anniversary of such Program being selected by Celgene, then Agios’ obligations under Section 8.8(c) with respect to the Collaboration Target associated with such Picked Validated Program shall cease. 

  
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 Article VIII 
 Grant of Rights; Exclusivity 
 Section 8.1 Research Licenses.
Subject to the terms and conditions of this Agreement: 
 (a) Licenses Granted to Celgene. Agios hereby grants to Celgene
a non-exclusive, non-royalty-bearing, non-transferable (except as set forth in Section 15.4), worldwide right and license in the Field, with the right to grant sublicenses solely to Affiliates and Third Party Contractors subject to
Section 8.4(a), under Agios’ rights in Agios Intellectual Property and Agios Collaboration Intellectual Property: 

(i) to perform Celgene’s obligations and exercise its rights under each Discovery Program; and 

(ii) to exercise Celgene’s rights and perform its obligations with respect to any Independent Program assumed by Celgene pursuant
to Section 3.5(a) or Section 3.5(b), up to and including the expiration of the applicable Buy-In Right Term or Agios’ exercise or waiver of the Buy-In Right (at which point Celgene’s license under Section 8.2(d) or 8.2(e)
will apply). 
 (b) Licenses Granted to Agios. Celgene hereby grants to Agios a non-exclusive, non-royalty-bearing,
non-transferable (except as set forth in Section 15.4), worldwide right and license in the Field, with the right to grant sublicenses solely to Affiliates and Third Party Contractors subject to Section 8.4(a): 

(i) under Celgene’s rights in Celgene Intellectual Property and Celgene Collaboration Intellectual Property, to perform Agios’
obligations under each Discovery Program to Develop and/or Manufacture, for purposes of such Discovery Program, Collaboration Compounds and/or Development Candidates during the Discovery Term; and 

(ii) under Celgene’s rights in Celgene Collaboration Intellectual Property, to exercise Agios’ rights and perform its
obligations with respect to any Independent Program assumed by Agios pursuant to Section 3.5(a) or 3.5(b), up to and including the expiration of the applicable Buy-In Right Term or Celgene’s exercise or waiver of the Buy-In Right (at which
point Agios’ license under Section 8.2(d) or 8.2(f)(iii) will apply); provided that, for this purpose, “Celgene Collaboration Intellectual Property” means Celgene Collaboration Intellectual Property only to the
extent that it (A) is actually used in the corresponding Discovery Program immediately prior to such Discovery Program becoming such Independent Program and (B) is necessary for the Development and/or Manufacture of Independent Compounds
under such Independent Program. 
 Section 8.2 Development and Commercialization Licenses. Subject to the terms and
conditions of this Agreement: 
 (a) Co-Commercialized Programs. Effective as of the Option Exercise Date with respect to
each Co-Commercialized Program: 
 (i) Agios hereby grants to Celgene an exclusive (even as to Agios except as provided in
Section 8.10(b)), non-transferable (except as set forth in Section 15.4), royalty-bearing, worldwide right and license in the Field, with the right to grant sublicenses as set forth in Sections 8.4(a) and 8.4(c), under Agios’ rights
in Agios Intellectual Property and Agios Collaboration Intellectual Property, to Develop, Manufacture and/or Commercialize Licensed Compounds and/or Licensed Products under such Co-Commercialized Program. 

  
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 (ii) Celgene hereby grants to Agios a non-exclusive, non-transferable (except as set forth
in Section 15.4), worldwide right and license in the Field, without the right to grant sublicenses (except as set forth in Section 8.4(a)), under Celgene’s rights in Celgene Intellectual Property and Celgene Collaboration Intellectual
Property, to perform Agios’ obligations under a Development Plan or Commercialization Plan to Develop, Manufacture and/or Commercialize Licensed Compounds and/or Licensed Products under such Co-Commercialized Program. Such license shall be
fully paid-up and non-royalty-bearing. 
 (b) Picked Validated Programs Selected by Celgene. Effective as of the date of
Celgene’s Pick, with respect to each Picked Validated Program selected by Celgene pursuant to Section 3.7 (or, as applicable, Section 3.3(b)(iii), Section 3.6(c) or Section 15.5): 

(i) Agios hereby grants to Celgene an exclusive (even as to Agios except as provided in Section 8.10(b)), non-transferable (except
as set forth in Section 15.4), royalty-bearing, worldwide right and license in the Field, with the right to grant sublicenses as set forth in Sections 8.4(a) and 8.4(c), under Agios’ rights in Agios Intellectual Property and Agios
Collaboration Intellectual Property, to Develop, Manufacture and/or Commercialize Licensed Compounds and/or Licensed Products under such Picked Validated Program. 
 (ii) Celgene hereby grants to Agios a non-exclusive, non-transferable (except as set forth in Section 15.4), worldwide right and license in the Field, without the right to grant sublicenses (except
as set forth in Section 8.4(a)), under Celgene’s rights in Celgene Intellectual Property and Celgene Collaboration Intellectual Property, to perform Agios’ obligations under a Development Plan to Develop Licensed Compounds and/or
Licensed Products under such Picked Validated Program. Such license shall be fully paid-up and non-royalty-bearing. 
 (c)
Split Programs. Effective upon the Option Exercise Date for each Split Program: 
 (i) Agios hereby grants to Celgene an
exclusive (even as to Agios except as provided in Section 8.10(b)), non-transferable (except as set forth in Section 15.4), royalty-bearing right and license in the Field, with the right to grant sublicenses as set forth in Sections 8.4(a)
and 8.4(d), under Agios’ rights in Agios Intellectual Property and Agios Collaboration Intellectual Property: 
 (A) to
Develop, Manufacture and/or Commercialize Split Compounds and/or Split Products under such Split Program in the ROW Territory; and 
 (B) to Develop and/or Manufacture Split Compounds and/or Split Products under such Split Program in the US Territory for the sole purpose of using, offering for sale and selling Split Compounds and/or
Split Products in, and importing Split Compounds and/or Split Products into, the ROW Territory. 
 (ii) Celgene hereby grants
to Agios a non-exclusive, non-transferable (except as set forth in Section 15.4), royalty-bearing right and license in the Field, with the right to grant sublicenses as set forth in Sections 8.4(a) and 8.4(d), under Celgene’s rights in
Celgene Intellectual Property and Celgene Collaboration Intellectual Property: 

  
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 (A) to Develop, Manufacture and/or Commercialize Split Compounds and/or Split Products
under such Split Program in the US Territory; and 
 (B) to Develop and/or Manufacture Split Compounds and/or Split Products
under such Split Program in the ROW Territory for the sole purpose of using, offering for sale and selling Split Compounds and/or Split Products in, and importing Split Compounds and/or Split Products into, the US Territory; 

provided that the foregoing license under Section 8.2(c)(ii)(A) shall be exclusive (even as to Celgene except as provided in
Section 8.10(b)) with respect to the applicable Split Program only to the extent of claims within the Celgene Collaboration Patent Rights Covering a composition of matter on the Split Compound or Split Product in such Split Program. 

(iii) For purposes of clarity, upon the Agios Opt-Out Date under any Split Program, (A) if Celgene elects to assume US Territory
rights under such Split Program in accordance with Section 3.10, the licenses granted to each Party with respect to such Split Program under this Section 8.2(c) shall convert to the licenses granted to each Party with respect to a
Co-Commercialized Program under Section 8.2(a), and (B) if Celgene does not elect to assume US Territory rights under such Split Program, then the licenses granted to Agios under Section 8.2(c)(ii) shall terminate. 

(d) Buy-In Programs. Effective upon the date of the Buy-In Party’s exercise of any Buy-In Right for a Buy-In Program pursuant
to Section 3.11, with respect to each such Buy-In Program: 
 (i) If Celgene is the Commercializing Party, Agios hereby
grants to Celgene an exclusive (even as to Agios except as provided in Section 8.10(b)), non-transferable (except as set forth in Section 15.4), royalty-bearing, worldwide right and license in the Field, with the right to grant sublicenses
as set forth in Sections 8.4(a) and 8.4(e), under Agios’ rights in Agios Intellectual Property and Agios Collaboration Intellectual Property, to Develop, Manufacture and/or Commercialize the Buy-In Compounds and/or Buy-In Products under such
Buy-In Program. 
 (ii) If Agios is the Commercializing Party, Celgene hereby grants to Agios a non-exclusive, non-transferable
(except as set forth in Section 15.4), royalty-bearing, worldwide right and license in the Field, with the right to grant sublicenses as set forth in Sections 8.4(a) and 8.4(e), under Celgene’s rights in Celgene Collaboration Intellectual
Property, to Develop, Manufacture and/or Commercialize the Buy-In Compounds and/or Buy-In Products under such Buy-In Program; provided that, for this purpose, “Celgene Collaboration Intellectual Property” means Celgene
Collaboration Intellectual Property only to the extent that it (A) is actually used in the applicable Discovery Program immediately prior to such Discovery Program becoming the Independent Program that preceded such Buy-In Program and
(B) is necessary for the Development, Manufacture and/or Commercialization of Buy-In Product under such Buy-In Program; provided further that the foregoing license under this Section 8.2(d)(ii) shall be exclusive (even
as to Celgene except as provided in Section 8.10(b)) with respect to the applicable Buy-In Program only to the extent of claims within the Celgene Collaboration Patent Rights Covering a composition of matter on the Buy-In Product in such Buy-In
Program. 

  
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 (e) Celgene Reverted Programs. Effective upon the date of rejection or waiver by
Agios of any Buy-In Right for an Independent Program independently Developed by Celgene pursuant to Section 3.11(c), for each such Celgene Reverted Program, Agios hereby grants to Celgene an exclusive (even as to Agios except as provided in
Section 8.10(b)), non-transferable (except as set forth in Section 15.4), royalty-bearing worldwide right and license in the Field, with the right to grant sublicenses as set forth in Sections 8.4(a) and 8.4(f), under Agios’ rights in
Agios Intellectual Property and Agios Collaboration Intellectual Property, to Develop, Manufacture and/or Commercialize Celgene Reverted Compounds and/or Celgene Reverted Products under such Celgene Reverted Program. 

(f) Agios Reverted Programs. 
 (i) Optionable Programs for which Celgene does not exercise the Celgene Program Option. Effective as of Celgene’s failure to make (or decision not to make) a DC Commitment within the period
required under a Discovery Program or, after making a DC Commitment, Celgene’s failure to exercise (or decision not to exercise) the Celgene Program Option during the applicable Celgene Option Exercise Period for such Discovery Program, Celgene
hereby grants to Agios a non-exclusive, non-transferable (except as set forth in Section 15.4), worldwide right and license in the Field, with the right to grant sublicenses as set forth in Sections 8.4(a) and 8.4(g), under Celgene’s
rights in Celgene Collaboration Intellectual Property, to Develop, Manufacture and/or Commercialize Agios Reverted Compounds and/or Agios Reverted Products that contain such Agios Reverted Compound under such Discovery Program; provided
that, for this purpose, “Celgene Collaboration Intellectual Property” means Celgene Collaboration Intellectual Property only to the extent that it (A) is actually used in such Discovery Program immediately prior to such Program
becoming an Agios Reverted Program and (B) is necessary for the Development, Manufacture and/or Commercialization of Agios Reverted Compounds and/or Agios Reverted Products that contain such Agios Reverted Compounds under such Discovery
Program; provided further that the foregoing license under this Section 8.2(f)(i) shall be exclusive (even as to Celgene except as provided in Section 8.10(b)) with respect to the applicable Agios Reverted Program only
to the extent of claims within the Celgene Collaboration Patent Rights Covering a composition of matter on the Agios Reverted Compound or Agios Reverted Product that contains such Agios Reverted Compound in such Agios Reverted Program. 

(ii) Picked Validated Programs. Effective as of the date of Agios’ Pick, with respect to each Picked Validated Program
selected by Agios pursuant to Section 3.7 (or, as applicable, Section 3.3(b)(iii) or Section 15.5), Celgene hereby grants to Agios a non-exclusive, non-transferable (except as set forth in Section 15.4), worldwide right and
license in the Field, with the right to grant sublicenses as set forth in Sections 8.4(a) and 8.4(g), under Celgene’s rights in Celgene Collaboration Intellectual Property, to Develop, Manufacture and/or Commercialize Picked Compounds and Agios
Reverted Products that contain such Picked Compounds under such Picked Validated Program; provided that, for this purpose, “Celgene Collaboration Intellectual Property” means Celgene Collaboration Intellectual Property only
to the extent that it (A) is actually used in such Picked Validated Program immediately prior to such Program becoming an Agios Reverted Program and (B) is necessary for the Development, Manufacture and/or Commercialization of Agios
Reverted Compounds and/or Agios Reverted Products that contain such Agios Reverted Compounds under such Picked Validated Program; 

  
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provided further that the foregoing license under this Section 8.2(f)(ii) shall be exclusive (even as to Celgene except as provided in Section 8.10(b)) with respect
to the applicable Agios Reverted Program only to the extent of claims within the Celgene Collaboration Patent Rights Covering a composition of matter on the Agios Reverted Compound or Agios Reverted Product that contains such Agios Reverted Compound
in such Agios Reverted Program. 
 (iii) Independent Programs. Effective upon the date of rejection or waiver by Celgene
of any Buy-In Right for an Independent Program independently Developed by Agios pursuant to Section 3.11(c), for each such Agios Reverted Program, Celgene hereby grants to Agios a non-exclusive, non-transferable (except as set forth in
Section 15.4), worldwide right and license in the Field, with the right to grant sublicenses as set forth in Sections 8.4(a) and 8.4(g), under Celgene’s rights in Celgene Collaboration Intellectual Property, to Develop, Manufacture and/or
Commercialize Agios Reverted Compounds and/or Agios Reverted Products that contain such Agios Reverted Compounds under such Agios Reverted Program; provided that, for this purpose, “Celgene Collaboration Intellectual
Property” means Celgene Collaboration Intellectual Property only to the extent that it (A) is actually used in the applicable Discovery Program immediately prior to such Discovery Program becoming such Independent Program and (B) is
necessary for the Development, Manufacture and/or Commercialization of Agios Reverted Compounds and/or Agios Reverted Products that contain such Agios Reverted Compounds under such Agios Reverted Program; provided further that
the foregoing license under this Section 8.2(f)(iii) shall be exclusive (even as to Celgene except as provided in Section 8.10(b)) with respect to the applicable Agios Reverted Program only to the extent of claims within the Celgene
Collaboration Patent Rights Covering a composition of matter on the Agios Reverted Compound or Agios Reverted Product that contains such Agios Reverted Compound in such Agios Reverted Program. 

(iv) Agios shall not owe royalties or milestones with respect to the licenses in this Section 8.2(f), but Agios shall be solely
responsible for any payments owed by Celgene to any Third Party licensors of Celgene Collaboration Intellectual Property, and shall be responsible for complying with the terms of any license agreements with such Third Party licensors, in either
case, directly related to Agios’ exercise of such licenses. 
 Section 8.3 Collaboration Compounds. The Parties
agree as follows: 
 (a) Celgene’s Use of Licensed Compounds. It is agreed that each of the licenses granted to
Celgene from Agios under Section 8.2 includes the right to use Collaboration Compounds, Licensed Compounds or Celgene Reverted Compounds associated with one Discovery Program, Independent Program conducted by Celgene, Licensed Program for which
Celgene is the Commercializing Party, or Celgene Reverted Program, as applicable, in connection with any other Discovery Program, Independent Program conducted by Celgene, Licensed Program for which Celgene is the Commercializing Party, or Celgene
Reverted Program. 
 (b) Agios’ Use of Licensed Compounds. Agios and, subject to Sections 15.4(b) and 15.4(c), its
Affiliates shall not, and shall not grant any Third Party the right to, Develop, Manufacture and/or Commercialize any Licensed Compound, Licensed Product, Celgene Reverted Compound or Celgene Reverted Product for any purpose, other than in
connection with a Licensed Program or Celgene Reverted Program pursuant to the Collaboration under this Agreement. 

  
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 Section 8.4 Sublicense Rights. Subject to Section 8.5, the Parties have the
following sublicensing rights. 
 (a) Sublicenses to Affiliates and Subcontractors. Each Party shall have the right to
grant sublicenses within the scope of the licenses under Sections 8.1, 8.2 and 8.3, as applicable: 
 (i) to such Party’s
Affiliates; and 
 (ii) to Third Parties for the purpose of engaging Third Parties as contract research organizations, contract
manufacturers, contract sales forces, consultants, academic researchers and the like (“Third Party Contractors”) in connection with Development, Manufacturing or Commercialization activities on behalf of such Party or its Affiliates
with respect to [**] in the Field in the Territory under this Agreement, subject to the following with respect to [**] (except only the obligations under Section 8.4(a)(ii)(A) shall apply with respect to Agios Reverted Programs or Celgene
Reverted Programs and, for all other purposes of this Section 8.4(a)(ii), “[**]” shall not include Agios Reverted Compounds, Agios Reverted Products, Celgene Reverted Compounds or Celgene Reverted Products): 

(A) unless otherwise agreed by the JSC by Mutual Consent, each Party shall require any such Third Party to whom such Party discloses
Confidential Information to enter into an appropriate written agreement obligating such Third Party to be bound by obligations of confidentiality and restrictions on use of such Confidential Information that are no less restrictive than the
obligations set forth in Article XI, including requiring such Third Party to agree in writing not to issue any Publications except in compliance with the terms of this Agreement (including approval by the JSC, pursuant to the Publication Guidelines,
and the obligations set forth in Section 11.4, except that Publications by academic collaborators shall be permitted (without JSC consent) if the academic collaborator (i) provides an advance copy of the proposed Publication (under the
same time periods as described in Section 11.4(a)), which may be shared with the other Party, (ii) agrees to delay such Publication sufficiently long enough to permit the timely preparation and filing of a patent application, and
(iii) upon the request of either Party, removes from such Publication any Confidential Information of such Party); 
 (B)
unless otherwise agreed by the JSC by Mutual Consent, each Party will obligate such Third Party to agree in writing to [**] to, any inventions arising under its agreement with such Third Party to the extent related to Development, Manufacturing or
Commercialization with respect to such Agreement Compounds in the Field in the Territory; and such Party shall structure such [**] so as to enable such Party to sublicense such Third Party inventions to the other Party pursuant to Section 8.1,
8.2, 8.3 or 8.9, as applicable (including permitting such other Party to grant further sublicenses); provided that, in connection with any academic collaborator performing research work to discover or research Targets (but only if such
academic collaborator is not provided [**]), each Party will only be required to obligate such academic collaborator to agree in writing to grant [**] to, and a right to negotiate for [**] to, any such inventions, which must be sublicensable to the
other Party pursuant to Section 8.1, 8.2, 8.3 or 8.9, as applicable (including permitting such other Party to grant further sublicenses); 

  
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 (C) each Party shall notify the JRC, JDC or JCC, as applicable, at a regular meeting of the
JRC, JDC or JCC, as applicable, of the execution any such agreement with such Third Party and, if requested, shall provide the other Party with a copy of such agreement, which copy may be redacted with respect to matters that do not relate to the
Collaboration; and 
 (D) unless otherwise agreed by the JSC by Mutual Consent, each Party will require any such Third Party to
grant to the other Party access to [**] generated by such Third Party’s work with respect to such [**] to the same extent as such other Party’s licenses under Section 8.1, 8.2, 8.3 or 8.9, as applicable, and grant the other Party the
right to audit the records of such Third Party. 
 (b) Sublicenses under Independent Programs. 

(i) Celgene shall not have the right to grant sublicenses or licenses within the scope of the license under Section 8.1(a)(ii) to
any Third Party to Develop and Manufacture any Independent Compounds under an Independent Program Developed by Celgene in accordance with Section 3.11 (except to Affiliates and Third Party Contractors as permitted under Section 8.4(a)
above), without the prior written consent of Agios, unless and until such Independent Program becomes a Buy-In Program (in which event Section 8.4(e) shall apply with respect to sublicense rights) or a Celgene Reverted Program (in which event
Section 8.4(f) shall apply with respect to sublicense rights). 
 (ii) Agios shall not have the right to grant sublicenses
or licenses within the scope of the license under Section 8.1(b)(ii) to any Third Party to Develop and Manufacture any Independent Compounds under an Independent Program Developed by Agios in accordance with Section 3.11 (except to
Affiliates and Third Party Contractors as permitted under Section 8.4(a) above), without the prior written consent of Celgene, unless and until such Independent Program becomes a Buy-In Program (in which event Section 8.4(e) shall apply
with respect to sublicense rights) or an Agios Reverted Program (in which event Section 8.4(g) shall apply with respect to sublicense rights). 
 (c) Sublicenses under Picked Validated Programs selected by Celgene and Co-Commercialized Programs. Celgene shall have the right to grant sublicenses or licenses within the scope of the licenses
under Sections 8.2(a) and 8.2(b) to any Third Party to Develop, Manufacture or Commercialize Licensed Compounds and/or Licensed Products under Picked Validated Programs selected by Celgene pursuant to Section 3.7 (or, as applicable,
Section 3.3(b)(iii), Section 3.6(c) or Section 15.5) and under Co-Commercialized Programs in the Territory. 

(d) Sublicenses under Split Programs. Subject to Section 3.10(e), Agios shall have the right to grant sublicenses or licenses
within the scope of the license under Section 8.2(c)(ii) to any Third Party to Develop, Manufacture or Commercialize Split Products under a Split Program without Celgene’s consent; provided that any such sublicenses or
licenses do not 

  
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modify Celgene’ rights in the Split Product or the Split Program. Celgene shall have the right to grant sublicenses or licenses within the scope of the license under Section 8.2(c)(i)
to any Third Party to Develop, Manufacture or Commercialize Split Products under a Split Program without Agios’ consent; provided that any such sublicenses or licenses do not modify Agios’ rights in the Split Product or the
Split Program. 
 (e) Sublicenses under Buy-In Programs. The Commercializing Party for a Buy-In Program shall have the
right to grant sublicenses or licenses within the scope of the license under Section 8.2(d) to any Third Party to Develop, Manufacture or Commercialize Buy-In Products in the Territory under a Buy-In Program without the other Party’s
consent; provided that any such sublicenses or licenses do not modify the other Party’s rights in the Buy-In Product or Buy-In Program. 
 (f) Sublicenses under Celgene Reverted Programs. Celgene shall have the right to grant sublicenses or licenses, within the scope of the license under Section 8.2(e) above, to Third Parties to
Develop, Manufacture or Commercialize Celgene Reverted Compounds and/or Celgene Reverted Products. 
 (g) Sublicenses under
Agios Reverted Programs. Agios shall have the right to grant sublicenses or licenses, within the scope of the license under Section 8.2(f) above, to Third Parties to Develop, Manufacture or Commercialize Agios Reverted Compounds and/or
Agios Reverted Products. 
 Section 8.5 Sublicense Requirements. Any sublicense granted by a Party pursuant to this
Agreement shall be subject to the following: 
 (a) each sublicense granted hereunder by a Party shall be consistent with the
requirements of this Agreement; 
 (b) any transfer of rights between Celgene and its Affiliates shall not be deemed a
sublicense by Celgene but shall be deemed a direct license by Agios to Celgene’s Affiliate; provided that Celgene shall remain responsible for the activities of its Affiliate; 

(c) a Party’s or its Affiliates’ Third Party sublicensees shall have no right to grant further sublicenses without the other
Party’s prior written consent, which consent shall not be unreasonably withheld, conditioned or delayed; 
 (d) such Party
shall be primarily liable for any failure by its sublicensees to comply with all relevant restrictions, limitations and obligations in this Agreement; 
 (e) such sublicense must be granted pursuant to a written sublicense agreement and such Party must provide the other Party with a copy of any sublicense agreement entered into under Sections 8.4(c),
8.4(d), and 8.4(e) above within [**] days after the execution of such sublicense agreement; provided that any such copy may be redacted to remove any confidential, proprietary or competitive information, but
such copy shall not be redacted to the extent that it impairs the other Party’s ability to ensure compliance with this Agreement. Such sublicense agreement shall be treated as Confidential Information of the sublicensing Party; and 

  
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 (f) except as otherwise provided in the sublicense agreement, if this Agreement terminates
for any reason, any Third Party sublicensee of Celgene shall, from the effective date of such termination, automatically become a direct licensee of Agios with respect to the rights licensed to Celgene hereunder and sublicensed to the sublicensee by
Celgene; provided, however, that such sublicensee is not in breach of its sublicense agreement and continues to perform thereunder. 
 Section 8.6 Affiliates and Third Party Contractors. Either Party may exercise its rights and perform its obligations hereunder itself or through its Affiliates and sublicensees. Each Party
shall be primarily liable for any failure by its Affiliates and Third Party Contractors to comply with all relevant restrictions, limitations and obligations in this Agreement. 

Section 8.7 Existing Third Party Agreements. 
 (a) Acknowledgement. Except as provided in Section 8.7(b), Agios acknowledges that it is responsible for the fulfillment of its obligations under the Existing Third Party Agreements and agrees
to fulfill the same, including any provisions necessary to maintain in effect any rights sublicensed to Celgene hereunder and the exclusive nature of such rights, subject to Celgene’s compliance with its obligations hereunder. In the event of
any conflict between the terms of this Agreement and the Existing Third Party Agreements, the Parties will discuss in good faith how to address the conflict; provided that, if the Parties are unable to agree on how to address the
conflict, the terms of this Agreement shall govern. 
 (b) Incorporation of Certain Provisions. Celgene acknowledges and
agrees that it shall be bound by the following provisions of the Existing Third Party Agreements, as a sublicensee of the rights licensed to Agios thereunder but only to the extent applicable to the rights sublicensed to Celgene hereunder and to the
extent that Celgene exercises its Celgene Program Option with respect to an Optionable Program, selects Picked Validated Programs or is the Commercializing Party for a Buy-In Program or Celgene Reverted Program (but specifically excluding with
respect to any Agios Reverted Programs or any Terminated Programs under Section 14.3(a)): 
 (i) Sections 2.3 (as
described in Section 8.10(b)(iii) hereof), 4.1 (with respect to the diligence obligations but not the reporting obligations), 4.2 and 12.3(c) of the [**] Agreement, 
 (ii) Sections 2.2, 2.4 (as described in Section 8.10(b)(iii) hereof), 3.1, 3.2, 5.5, 8.1 (as provided in Section 13.3), 8.2, 8.3, 10.2 and 10.3 (to the extent of the rights of the licensor under
the [**] Agreement to terminate the [**] Agreement), 10.4, 10.7(b), 11.1, 11.2 and 14.6 of the [**] Agreement, and 
 (iii)
Sections 1.3 (as described in Section 8.10(b)(iii) hereof), 2.1, 2.3, 5.2, 5.3, 5.4, 5.5, 6.2, 7.1, 8.1 (with respect to information of the licensors under the [**]Agreement or with respect to the licensor’s obligation to keep information
of either Party confidential), 10.1 and 10.4 of the [**] Agreement. 

  
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 Furthermore, Celgene acknowledges that Agios is required to share certain reports and copies of sublicense
agreements provided by Celgene to Agios hereunder with the licensors under the Existing Third Party Agreements, and Celgene consents to the sharing of such reports and such copies of such sublicense agreements to the extent required under such
Existing Third Party Agreements to the same extent as disclosures are permitted under Section 11.3(b)(ii)(B) hereunder; provided that any such copies of sublicense agreements must be redacted to the extent permitted under such
Existing Third Party Agreement. 
 (c) Covenants Regarding the Existing Third Party Agreements. Agios agrees that during
the Term: 
 (i) Agios shall not modify or amend the Existing Third Party Agreements in any way without Celgene’s prior
written consent; 
 (ii) Agios shall not terminate any Existing Third Party Agreement, in whole or in part, without
Celgene’s prior written consent; 
 (iii) Agios shall be solely responsible for, and shall make, all royalty payments,
milestone payments, yearly fees, sublicensee fees, Prosecution fees, and all other payments owed to the licensors under and pursuant to the Existing Third Party Agreements; 
 (iv) Agios shall not exercise or fail to exercise any of Agios’ rights, or fail to perform any of Agios’ obligations, under the Existing Third Party Agreements that relate to Celgene’s
rights hereunder without the prior written consent of Celgene, including rights with respect to including improvements within the licenses granted under the Existing Third Party Agreements; and, at the reasonable request of Celgene, Agios shall
exercise such rights and make such requests that relate to Celgene’s rights hereunder as are permitted under the Existing Third Party Agreements; 
 (v) Agios shall promptly furnish Celgene with copies of all reports and other communications that Agios furnishes to the licensors under the Existing Third Party Agreements to the extent that such reports
relate to this Agreement; 
 (vi) Agios shall promptly furnish Celgene with copies of all reports and other communications that
Agios receives from the licensors under the Existing Third Party Agreements that relate to the subject of this Agreement (including notices relating to improvements under the Existing Third Party Agreements); 

(vii) Agios shall furnish Celgene with copies of all notices received by Agios relating to any alleged breach or default by Agios under
the Existing Third Party Agreements within [**] Business Days after Agios’ receipt thereof; in addition, if Agios should at any time breach the Existing Third Party Agreements or become unable to timely perform its obligations thereunder, Agios
shall immediately notify Celgene; 
 (viii) If Agios cannot or chooses not to cure or otherwise resolve any alleged breach or
default under the Existing Third Party Agreements, (A) Agios shall so notify Celgene within [**] Business Days of such decision, which shall not be less than [**] Business Days prior to the expiration of the cure period under the Existing Third
Party Agreements; provided that Agios shall use Commercially Reasonable Efforts to cure any such breach or default; and (B) Celgene, in its sole discretion, shall be permitted (but shall not be obligated), on

  
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behalf of Agios, to cure any breach or default under the Existing Third Party Agreements in accordance with the terms and conditions of the Existing Third Party Agreements or otherwise resolve
such breach directly with the licensors under the Existing Third Party Agreements; and (C) if Celgene pays any such licensor any amounts owed by Agios under the Existing Third Party Agreements, Celgene may deduct such amounts from payments
Celgene is required to make thereafter to Agios hereunder or, at Celgene’s election, may otherwise seek reimbursement of such amounts from Agios; and 
 (ix) Agios shall not provide any [**] to the licensors under the Existing Third Party Agreements without Celgene’s prior written consent. 

(d) Expiration of Option Term. Upon the expiration of the Option Term or at any other time during the Option Term, upon
Agios’ request, the Parties will discuss in good faith whether any sublicense of rights under any Existing Third Party Agreement granted to Celgene hereunder may be terminated as a result of such sublicensed rights not being necessary or useful
for the exercise of Celgene’s rights or performance of Celgene’s obligations hereunder. If the Parties agree by Mutual Consent to terminate any rights under Existing Third Party Agreements licensed to Celgene hereunder, this Agreement
shall be amended to reflect such agreement, including an amendment of the provisions of Section 8.7(c) to the extent applicable. 
 (e) Survival of Celgene’s Rights Following Termination of Existing Third Party Agreements. The Parties agree that in the event of any termination of any Existing Third Party Agreement with
respect to any intellectual property rights licensed to Celgene hereunder (other than a termination under Section 8.7(d) above), Celgene shall have any rights available under such Existing Third Party Agreements to become a direct licensee of
the Third Party licensor under such Existing Third Party Agreement and Agios shall use Commercially Reasonable Efforts to assist Celgene in exercising such rights; provided that Celgene has not breached this Agreement with respect to
the applicable Licensed Program or Celgene Reverted Program, or breached the applicable Third Party Rights under such Existing Third Party Agreement. In addition, notwithstanding the foregoing, in the event of such termination, Celgene may in any
event approach the licensor under the applicable Existing Third Party Agreement for a direct license. In the event of any such direct license following any termination of the related Existing Third Party Agreement without Celgene’s consent,
Celgene shall be entitled to deduct from any payments owed to Agios hereunder [**] percent ([**]%) of the amounts paid by Celgene to such licensor under such direct license with respect to licenses within the scope of the licenses previously granted
to Agios under the applicable Existing Third Party Agreement. 
 (f) Termination of Existing Third Party Agreement. The
Parties agree that termination, without Celgene’s prior written consent, of any Existing Third Party Agreement with respect to Patent Rights or Know-How that is necessary to use a Collaboration Target or Celgene Reverted Target, or to Develop,
Manufacture or Commercialize Collaboration Compounds, Licensed Compounds, Licensed Products, Celgene Reverted Compounds or Celgene Reverted Products under the applicable Licensed Program or Celgene Reverted Program hereunder shall be deemed a
material breach of this Agreement by Agios; provided that (i) if Celgene’s breach of this Agreement results in a breach of the Existing Third Party Agreements, Celgene agrees to use Commercially Reasonable Efforts to assist
Agios in curing such breach of 

  
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the Existing Third Party Agreements, and (ii) if Celgene’s breach of this Agreement results in a termination of the Existing Third Party Agreements, such termination of the Existing
Third Party Agreements shall not be deemed a material breach by Agios of this Agreement. 
 (g) Agios’ Allocation of
Consideration. Agios has disclosed to Celgene, and Celgene understands, that Agios intends to allocate a portion of the total consideration paid by Celgene pursuant to Section 9.1 and Section 9.2 of this Agreement, to the Existing
Third Party Agreements as set forth on Schedule 1.53. 
 Section 8.8 Exclusivity. 

(a) During the Option Term, Agios and, subject to Sections 15.4(b) and 15.4(c), its Affiliates shall not, directly or indirectly,
Develop, Manufacture or Commercialize (i) any therapeutic modality (including any small molecule or biologic) for Indications in the Oncology Field that [**] or (ii) any therapeutic modality (including any small molecule or biologic) in
any field or application that either activates or inhibits through direct binding to a Target on the Target List or to a Celgene Reverted Target, in each case with an EC50 or IC50 at or less than 800nM, except for the following: 

(A) in the case of either clause (i) or (ii), Collaboration Compounds, Development Candidates, Licensed Compounds, Independent
Compounds and products that contain any of the foregoing pursuant to the Collaboration under this Agreement, 
 (B) in the case
of either clause (i) or (ii), Agios Reverted Compounds (other than Agios Reverted Compounds that activate or inhibit through direct binding to Released Targets) and Agios Reverted Products that contain any such Agios Reverted Compound, and

 (C) in the case of the foregoing clause (i), compounds and products that [**] and that are Developed or Commercialized with
for-profit Third Parties pursuant to collaboration or licensing agreements that requires the first Clinical Trial in patients be conducted for an Indication [**] (“Partnered Programs”); provided that, during the Option
Term, Agios and, subject to Sections 15.4(b) and 15.4(c), its Affiliates shall not collaborate with or otherwise assist any Third Party with respect to Development, Manufacturing or Commercialization activities pursuant to any Partnered Program to
the extent directed to any Indication [**]. 
 Notwithstanding the foregoing, with respect to any Extended Program, the obligations set forth in
clause (ii) above shall continue to apply following the Option Term for any Target on the Target List that continues to be part of an Extended Program until the expiration of the Post-Option Extension. 

(b) During the Option Term, Celgene and, subject to Sections 15.4(b) and 15.4(c), its Affiliates shall not, directly or indirectly,
Develop, Manufacture or Commercialize any therapeutic modality (including any small molecule or biologic) for Indications in the Oncology Field that [**], except for Collaboration Compounds, Development Candidates, Licensed Compounds, Independent
Compounds, Celgene Reverted Compounds and products that contain any of the foregoing pursuant to this Agreement. Notwithstanding the foregoing, 

  
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with respect to any Extended Program, the obligations set forth in this Section 8.8(b) shall continue to apply following the Option Term for any Target on the Target List that continues to
be part of an Extended Program until the expiration of the Post-Option Extension. 
 (c) On a Collaboration
Target-by-Collaboration Target and Celgene Reverted Target-by-Celgene Reverted Target basis, during the applicable Exclusivity Period, neither Party nor, subject to Sections 15.4(b) and 15.4(c), any of its respective Affiliates shall, directly or
indirectly, Develop, Manufacture or Commercialize any therapeutic modality (including any small molecule or biologic) in any field or application that [**] that is within a Licensed Program or an Independent Program (except, in the case of Celgene,
with respect to Independent Programs of Agios pursuant to Section 3.5(a)(i) or Section 3.5(b)(i)), or a Celgene Reverted Target that is within a Celgene Reverted Program, except for Collaboration Compounds, Development Candidates, Licensed
Compounds, Independent Compounds, Celgene Reverted Compounds and products that contain any of the foregoing pursuant to this Agreement. 
 (d) A Party shall not be deemed to be, directly or indirectly, Developing, Manufacturing or Commercializing in violation of the provisions of Section 8.8(b) or 8.8(c) as a result of conducting a
research program or discovery effort (or manufacturing or commercializing a therapeutic modality resulting from such research program or discovery effort) that has as its specified and primary goal, as evidenced by laboratory notebooks or other
relevant documents contemporaneously kept, taken as a whole, to discover or Develop compounds that [**], as applicable, that is subject to the prohibitions of Section 8.8(b) or 8.8(c). 

(e) It is agreed and understood by the Parties that any Celgene research, discovery and commercialization activities existing as of the
Effective Date (other than activities directed to [**]), whether such activities are undertaken by Celgene alone or in conjunction with one or more partners, licensors, licensees, and/or collaborators, are expressly excluded from the provisions of
this Section 8.8. In particular and without limitation, Celgene research, discovery, and commercialization activities related to (i) the [**]; (ii) the [**]; (iii) [**]; (iv) [**]; (v) [**]; or (vi) [**]. With
respect to any Celgene program directed at [**], the provisions of this Section 8.8 shall apply to such program as of the Effective Date; provided that Celgene shall not be required to contribute any compounds from such Celgene
program to this Collaboration. 
 Section 8.9 Targets. Notwithstanding anything herein to the contrary, the Parties
agree that, at such point as a Target is removed from the Target List (whether removed by Mutual Consent of the JRC, upon expiration of the Option Term (or, if applicable, with respect to any Extended Program, following any Post-Option Extension),
or otherwise), both Parties shall be entitled to use such Target for any purpose, subject to Section 8.8. On a Target-by-Target basis, Agios hereby grants to Celgene a non-exclusive, non-transferable (except as set forth in Section 15.4),
worldwide right and license, with the right to grant sublicenses, under the Agios Intellectual Property and Agios Collaboration Intellectual Property to the extent (a) directed to a Target per se and (b) in existence, or developed or
generated, during the Option Term, with respect to each Target that was on but is removed from the Target List (whether removed by Mutual Consent of the JRC, upon expiration of the Option Term (or, if applicable, with respect to any Extended
Program, following any Post-Option Extension), or otherwise), subject to Section 8.8. Such license shall be perpetual, irrevocable, fully paid-up, and non-royalty-bearing, but Celgene shall be solely responsible for any payments owed by Agios
to any 

  
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Third Party licensors of Agios Intellectual Property or Agios Collaboration Intellectual Property and shall be responsible for complying with the terms of any license agreements with such Third
Party licensors, in either case, directly resulting from Celgene’s exercise of the foregoing license. 
 Section 8.10
Retained Rights. 
 (a) No Implied Licenses or Rights. Except as expressly provided in Section 8.1, 8.2, 8.3
or 8.9, and subject to Section 3.5(a)(i) and Section 8.8, all rights in and to the Agios Intellectual Property, Agios’ and its Affiliates’ interests in Agios Collaboration Intellectual Property and any other Patent Rights or
Know-How of Agios and its Affiliates, are hereby retained by Agios and its Affiliates. Except as expressly provided in Sections 8.1, 8.2, 8.3 and 8.9, and subject to Section 8.8, all rights in and to the Celgene Intellectual Property,
Celgene’s and its Affiliates’ interests in Celgene Collaboration Intellectual Property and any other Patent Rights or Know-How of Celgene and its Affiliates, are hereby retained by Celgene and its Affiliates. 

(b) Other Retained Rights. 
 (i) Notwithstanding the licenses granted to Agios pursuant to Section 8.2, Celgene retains the right to practice under the Celgene Intellectual Property and Celgene Collaboration Intellectual
Property to perform (and to sublicense Third Parties to perform) its obligations under this Agreement, including for the purpose of performing its activities in connection with the Clinical Trials, any Manufacturing activities, or any
Commercialization activities. 
 (ii) Notwithstanding the licenses granted to Celgene pursuant to Section 8.2, Agios
retains the right to practice under the Agios Intellectual Property and Agios Collaboration Intellectual Property to perform (and to sublicense Third Parties to perform) its obligations under this Agreement, including for the purpose of performing
its activities in connection with the Clinical Trials, any Manufacturing activities, or any Commercialization activities. 

(iii) The Parties acknowledge that the licenses granted hereunder are subject to the rights retained by (A) the licensor under the
[**] Agreement pursuant to Section 2.3 of the [**] Agreement, (B) the licensor under the [**] Agreement pursuant to Section 2.4 of the [**] Agreement, and (C) the licensors under the [**] Agreement pursuant to Sections 1.3 and
2.3 of the [**] Agreement; provided that, upon Celgene’s reasonable request, Agios shall cooperate fully in requesting and obtaining any waiver with respect to the requirement, if applicable under such agreements, that Licensed
Products or Celgene Reverted Products used or sold in the United States be manufactured substantially in the United States. 

Section 8.11 Section 365(n) of the Bankruptcy Code. All rights and licenses granted under or pursuant to any section of
this Agreement are and will otherwise be deemed to be for purposes of Section 365(n) of the United States Bankruptcy Code (Title 11, U.S. Code), as amended (the “Bankruptcy Code”), licenses of rights to “intellectual
property” as defined in Section 101(35A) of the Bankruptcy Code. The Parties will retain and may fully exercise all of their respective rights and elections under the Bankruptcy Code. The Parties agree that each

  
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Party, as licensee of such rights under this Agreement, will retain and may fully exercise all of its rights and elections under the Bankruptcy Code or any other provisions of applicable law
outside the United States that provide similar protection for “intellectual property.” The Parties further agree that, in the event of the commencement of a bankruptcy proceeding by or against a Party under the U.S. Bankruptcy Code or
analogous provisions of applicable law outside the United States, the Party that is not subject to such proceeding will be entitled to a complete duplicate of (or complete access to, as appropriate) such intellectual property and all embodiments of
such intellectual property, which, if not already in the non-subject Party’s possession, will be promptly delivered to it upon the non-subject Party’s written request thereof. Any agreements supplemental hereto will be deemed to be
“agreements supplementary to” this Agreement for purposes of Section 365(n) of the Bankruptcy Code. 
 Article
IX 
 Financial Provisions 
 Section 9.1 Initial Payment. In consideration of Agios’ performance of its obligations under the Collaboration, Celgene shall make an initial, non-refundable payment to Agios of One
Hundred Twenty-One Million One Hundred Seventy-Six Thousand Sixty-Three Dollars (US$121,176,063) within [**] days following the Effective Date. 
 Section 9.2 Equity Investment. As of the Effective Date, the Parties have entered into a Stock Purchase Agreement pursuant to which, as of the Effective Date, Celgene shall purchase from
Agios, and Agios shall sell to Celgene, shares of Series B Convertible Preferred Stock of Agios, as more specifically set forth in such Stock Purchase Agreement. 
 Section 9.3 Option Exercise Payments. 
 (a) Payments for
Co-Commercialized Programs. Following Celgene’s selection of a Development Candidate at the DC Selection Stage under a Co-Commercialized Program pursuant to Section 3.6(b), on a Program-by-Program basis: 

(i) Celgene shall pay Agios Twenty-Two Million Five Hundred Thousand Dollars (US$22,500,000) (the “IND Amount”) upon an
IND Acceptance achieved by Agios for such Development Candidate in such Co-Commercialized Program pursuant to Section 3.6(b)(iii)(A); provided that (A) no such IND Amount will be due with respect to the first [**] IND
Acceptances achieved by Agios under Co-Commercialized Programs for which IND Acceptance is achieved; (B) no such IND Amount will be due prior to [**]; and (C) no such IND Amount will be due with respect to any IND Acceptance achieved by
Agios under an Optionable Program that becomes a Split Program pursuant to Section 3.10. 
 (ii) If Celgene has requested
Agios to conduct a Phase I MAD Study pursuant to Section 3.6(b)(iii)(A)(2), then, unless the applicable Program becomes a Split Program, Celgene shall pay Agios Five Million Dollars (US$5,000,000) upon enrollment of the last patient in such
first Phase I MAD Study (whether successful or not) conducted by Agios (the “Phase I Amount”); provided, however, that, if the JDC by Mutual Consent adopts a Development Plan and related Development Budget
pursuant to which Agios undertakes significant additional Development activities under such Program following IND Acceptance in parallel with such 

  
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Phase I MAD Study, then the JDC by Mutual Consent will determine the amount of an increase to such Phase I Amount necessary to cover such excess costs and expenses pursuant to such Development
Plan. For clarity, Celgene shall not be responsible for the Phase I Amount with respect to any Split Program. 
 (iii) For
clarity, Celgene shall not owe the IND Amount with respect to any Picked Validated Program selected by Celgene or for any Buy-In Program (whether Celgene is the Buy-In Party or Agios is), and Celgene shall not owe the Phase I Amount with respect to
any Phase I MAD Study other than that conducted at Celgene’s request pursuant to Section 3.6(b)(iii)(A)(2). 
 (b)
Reimbursement for Picked Validated Programs Selected by Celgene. Except as provided in Section 3.3(b)(iii)(B), 3.3(b)(iii)(C) or 15.5, on a Validated Program-by-Validated Program basis, Celgene shall pay to Agios the Validated Program
Discovery Costs for each Pick selected by Celgene pursuant to Section 3.7 that is directed to a Collaboration Target that was not on the Target List as of the Effective Date. 

(c) Payment. Celgene shall make the payments set forth in this Section 9.3 within [**] days following receipt of an invoice
from Agios notifying Celgene that the event triggering the payment has occurred (or, if Section 9.3(a)(i)(B) is applicable, within [**] days after receipt of an invoice or [**], whichever is later). 

Section 9.4 Development Costs. 
 (a) For Licensed Programs. Except as set forth in clauses (b) and (c) below with respect to Split Programs and Buy-In Programs, the following shall apply: 

(i) With respect to each Co-Commercialized Program and Picked Validated Program selected by Celgene under which Agios performs
Development activities hereunder, Celgene shall be responsible for bearing one hundred percent (100%) of the Development Costs for such Licensed Program, including the Development Costs of any Clinical Trials or other Licensed Program activities
conducted by Agios (at Celgene’s request pursuant to Section 3.6(b)(iv)(B) and as agreed to by Agios), that (A) are incurred after the Development Cost Initiation Date for such Licensed Program and (B) are within [**] percent
([**]%) of the approved Development Budget under the Development Plan for such Licensed Program. Notwithstanding anything herein to the contrary, any costs of the first Phase 1 MAD Study for which Agios is paid the Phase I Amount shall not be
included in the Development Costs under this Section 9.4(a). 
 (ii) Within [**] days following the end of each [**],
Agios shall prepare and deliver to Celgene a [**] report detailing its Development Costs incurred during such period with respect to which Celgene is required to pay pursuant to Section 9.4(a)(i). Agios shall submit any supporting information
reasonably requested by Celgene related to such Development Costs included in Agios’ report within [**] days after Agios’ receipt of such request. Celgene shall pay all amounts of such Development Costs within [**] days following the later
of Celgene’s receipt of such report and Celgene’s receipt of such supporting information. 

  
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 (b) For Split Programs. Effective as of the Option Exercise Date for any Split
Program, each party shall be responsible for fifty percent (50%) of Global Development Costs of such Split Program that (i) are incurred after the Development Cost Initiation Date for such Split Program (as further described in
Section 3.10(b)(ii)) and (ii) are within [**] percent ([**]%) of the approved Development Budget under the Development Plan for such Split Program (or the Commercialization budget under the Commercialization Plan, as described in Sections
6.1(c)(i) and 6.2(a)(i)). For purposes of clarity, (x) Agios shall be responsible for one hundred percent (100%) of Territory-Specific Development Costs of such Split Program incurred by Agios, (y) Celgene shall be responsible for one
hundred percent (100%) of Territory-Specific Development Costs of such Split Program incurred by Celgene, and (z) Agios shall be responsible for [**] percent ([**]%) of its Global Development Costs of such Split Program incurred prior to [**].

 (c) For Buy-In Programs. Effective as of the date of the Buy-In Party’s exercise of its Buy-In Rights with
respect to each Buy-In Program as set forth in Section 3.11, the Buy-In Party shall be responsible for [**] percent ([**]%) of all Development Costs and the other Party shall be responsible for all remaining Development Costs of such Buy-In
Program that (i) are incurred after the Development Cost Initiation Date for such Buy-In Program and (ii) are within [**] percent ([**]%) of the approved Development Budget under the Development Plan for such Buy-In Program. 

(d) Reconciliation of Development Costs for Split Programs and for Buy-In Programs. Within [**] days following the end of each
[**], each Party shall prepare and deliver to the other Party a [**] report detailing its Development Costs for Buy-In Products and Global Development Costs for Split Products, in either case, incurred during such period with respect to which the
Parties are required to share pursuant to Section 9.4(b) or 9.4(c). The Party incurring such costs shall submit any supporting information reasonably requested by the other Party related to such costs included in the incurring Party’s
report within [**] days after the incurring Party’s receipt of such request. The Parties shall conduct a reconciliation of such Development Costs or Global Development Costs, as applicable, within [**] days after receipt of all such supporting
information, and an invoice shall be issued to the Party (if any) that has not paid for its full share of the Development Costs or Global Development Costs, as applicable, identified in such reconciliation. The paying Party shall pay all amounts
payable under any such invoice within [**] days after its receipt of such invoice. 
 Section 9.5 Manufacturing Costs;
Commercialization Costs. 
 (a) Each Party shall be solely responsible for Manufacturing Costs as provided in
Section 4.1. 
 (b) Subject to Section 9.5(a), Celgene shall be [**] responsible for [**] percent ([**]%) of
Celgene’s expenses incurred in connection with the Commercialization of the Picked Products and Celgene Reverted Products. Subject to Section 9.5(a), the Commercializing Party shall be [**] responsible for [**] percent ([**]%) of its
expenses incurred in connection with the Commercialization of Buy-In Products. 

  
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 (c) Subject to Section 9.5(a) and Section 6.1(c)(i), the Commercializing Party
shall be [**] responsible for [**] percent ([**]%) of its expenses incurred in connection with the Commercialization of the Split Products in such Commercializing Party’s portion of the Territory (i.e., the US Territory if Agios is the
Commercializing Party, and the ROW Territory if Celgene is the Commercializing Party). 
 (d) Subject to Section 9.5(a),
Celgene shall be [**] responsible for [**] percent ([**]%) of Celgene’s expenses incurred in connection with the Commercialization of the Co-Commercialized Products. In addition, with respect to each Co-Commercialized Program, Celgene shall be
responsible for bearing [**] percent ([**]%) of the Field-Based Costs for Commercialization Activities of Agios under Section 6.3 for such Co-Commercialized Program pursuant to Section 6.3 that (i) are incurred after the Development
Cost Initiation Date for such Co-Commercialized Program and (ii) are within [**] percent ([**]%) of the approved budget under the Commercialization Plan for such Co-Commercialized Program. 

(e) Within [**] days following the end of each [**], Agios shall prepare and deliver to Celgene a [**] report detailing its Field-Based
Costs pursuant to Section 6.3 for Co-Commercialized Products incurred during such period with respect to which Celgene is required to pay pursuant to Section 9.5(d). Agios shall submit any supporting information reasonably requested by
Celgene related to such costs included in Agios’ report within [**] days after Agios’ receipt of such request. Celgene shall pay all amounts of such Field-Based Costs within [**] days following the later of Celgene’s receipt of such
report and Celgene’s receipt of such supporting information. 
 Section 9.6 Milestone Payments. 

(a) Development and Regulatory Milestones. With respect to each Split Program, Co-Commercialized Program and Picked Validated
Program selected by Celgene pursuant to Section 3.7 (or, as applicable, Section 3.3(b)(iii), Section 3.6(c) or Section 15.5), Celgene shall pay Agios the following amounts after the first achievement by or on behalf of Celgene,
its Affiliates or its sublicensees of the corresponding milestone events set forth below with respect to each Licensed Product under such a Licensed Program, on a Licensed Program-by-Licensed Program basis. 

 

			
	 Development Milestones
	  	Each Program
	(1) FPD in a Phase III Study intended to support Regulatory Approval in ROW Territory	  	US$25,000,000
	(2) Filing of first NDA in ROW Territory	  	[**]
	(3) First Regulatory Approval in any of China, Japan or a Major European Country	  	[**]
	(4) Second Regulatory Approval in any of China, Japan or a Major European Country, but only if received in a different country or region, as applicable, than the first Regulatory
Approval	  	[**]

  
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 (i) For purposes of determining the occurrence of milestones under Section 9.6(a)(2),
“[**]” shall be deemed to have occurred [**] days following [**]; provided that, if such [**]. For purposes of determining the occurrence of milestones under Section 9.6(a)(3) and Section 9.6(a)(4), the [**]. For
purposes of clarity, no milestone amount shall be payable to Agios under Section 9.6(a)(4) if [**] for purposes of Section 9.6(a)(4). 
 (ii) For purposes of clarity, neither Buy-In Programs nor Celgene Reverted Programs shall be entitled to any milestones under this Section 9.6(a). 

(iii) For purposes of determining the milestones owed under this Section 9.6(a) on Licensed Product in a Split Program,
Co-Commercialized Program and Picked Validated Program selected by Celgene, a Licensed Product that achieves the applicable milestones in connection with [**] different Indications shall not be deemed to be [**] separate Licensed Products;
provided that, if the Licensed Product achieves the applicable milestones for [**] in the Oncology Field and [**] Indications outside the Oncology Field, (A) Celgene shall pay the corresponding milestones described in this
Section 9.6(a) with respect to the [**] Indication in the Oncology Field to achieve each such milestone event, and (B) upon achievement of the milestone events described in Sections 9.6(a)(3) and 9.6(a)(4) for the [**] Indication outside
the Oncology Field, Celgene shall pay the corresponding milestone payment upon achievement of such event. Other than the foregoing payment, no milestone payments shall be due with respect to the achievement of any milestone event by a Licensed
Product for [**] Indication. 
 (iv) For purposes of clarity, if Development of a Licensed Product directed to a particular
Collaboration Target [**] (a “Failed Product”) prior to [**], and Development of a Back-Up Compound directed to the same Collaboration Target as the Failed Product subsequently commences or continues, then any of the milestone
payments previously made by Celgene in the table set forth above in connection with such Failed Product shall [**] achievement of such milestone event by such Back-Up Compound. However, in the event that a Licensed Product [**], a Licensed Product
[**] shall be deemed a “Second Generation Product.” If such Second Generation Product achieves the Regulatory Approval milestone events set forth in Section 9.6(a)(3) and Section 9.6(a)(4), then Celgene shall pay to Agios
the associated milestone payments; provided that [**] with respect to the events set forth in Section 9.6(a)(1) or 9.6(a)(2); provided further that such Second Generation Product shall not be subject to the
provisions of Section 9.6(a)(iii), and no milestone payments shall be due with respect to the [**] Indication for such Second Generation Product. 
 (v) For purposes of clarity, if for any reason a milestone event corresponding to a milestone payment in the table set forth above does not occur prior to the occurrence of the next milestone event listed
in the table above for such Licensed Product, then such prior non-occurring milestone event shall be deemed to occur concurrently with the occurrence of the next milestone event; provided that [**]. 

(vi) Each milestone payment under this Section 9.6(a) shall be made within [**] days after the achievement of the applicable
milestone by Celgene or any of its Affiliates or sublicensees (or, if achievement of such milestone is within the control of Agios, within [**] days following Celgene’s receipt of written notice of the achievement of such milestone).

  
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 (vii) For clarity, the milestone payments set forth in the table above in this
Section 9.6(a) (to the extent payable) shall be paid only for each Licensed Product containing the same Licensed Compound to achieve the applicable milestone event, except as provided in Section 9.6(a)(iii) for [**]. By way of example, a
change in [**] with respect to a Licensed Compound will not trigger additional milestones for Licensed Product(s) containing such Licensed Compound. 
 (b) Phase II Study Milestone. Celgene shall pay Agios a one-time milestone of US $25 million upon the dosing of the final human subject with a Split Product designated by Agios in writing in a
company-sponsored Phase II Study in the US Territory (or in the ROW Territory, if agreed by the Parties by Mutual Consent). Such milestone shall be paid within [**] days after Celgene’s receipt of written notice of the achievement of such event
by Agios or any of its Affiliates or sublicensees. Such milestone shall be paid only once with respect to only one Split Program. 
 (c) Sales Milestone. Celgene shall make the following non-refundable, non-creditable, one-time payment to Agios (i) with respect to each Co-Commercialized Product or Split Product within [**]
days following the first achievement of aggregate Annual Net Sales in the [**] of each such Licensed Product that meet or exceed the threshold set forth below, and (ii) with respect to each Picked Product, within [**] days following the first
achievement of aggregate [**] Annual Net Sales of each such Picked Product that meet or exceed the threshold set forth below. If a Second Generation Product is sold, the Annual Net Sales associated with such Second Generation Product will be
aggregated with the Licensed Compound(s) to which it relates, and separate sales milestones under this Section 9.6(c) shall not be paid for such Second Generation Product. 

 

			
	 Annual Net Sales Threshold
	  	Milestone Payment
	 Equal to or greater than US$[**]
	  	US$25,000,000

 Section 9.7 Royalty Payments. 

(a) For Co-Commercialized Products. Celgene shall pay to Agios royalties on aggregate worldwide Annual Net Sales of each
Co-Commercialized Product at the following rates: 
  

			
	 Annual Net Sales of Licensed Product
	  	Royalty Rate
	 On the tranche of Annual Net Sales less than US$[**]
	  	[**]%
	 On the tranche of Annual Net Sales equal to or greater than US$[**]and less than US$[**]
	  	[**]%
	 On the tranche of Annual Net Sales equal to or greater than US$[**]
	  	[**]%

  
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 If a Second Generation Product is sold, the Annual Net Sales associated with such Second Generation Product
will be aggregated with the Licensed Compound(s) to which it relates for purposes of determining the applicable royalty rate for such sales. 
 (b) For Split Products. 
 (i) Celgene shall pay to Agios royalties on
aggregate Annual Net Sales of each Split Product in the ROW Territory at the rates set forth in the table above. 
 (ii) Agios
shall pay to Celgene royalties on aggregate Annual Net Sales of each Split Product in the US Territory at the rates set forth in the table above (substituting Agios for Celgene as the royalty-paying Party and Celgene for Agios as the
royalty-receiving Party). 
 (c) For Buy-In Products. The Commercializing Party for a Buy-In Program shall pay the Buy-In
Party royalties on aggregate worldwide Annual Net Sales of Buy-In Products under such Buy-In Program at the rates set forth in the table above (substituting the Commercializing Party for Celgene as the royalty-paying Party and the Buy-In Party for
Agios as the royalty-receiving Party). 
 (d) For Picked Products. Celgene shall pay to Agios royalties on aggregate
worldwide Annual Net Sales of each Picked Product at the rates set forth in the table above. 
 (e) For Celgene Reverted
Programs. Celgene shall pay to Agios royalties at a rate of [**] percent ([**]%) of aggregate worldwide Annual Net Sales of each Celgene Reverted Product. 
 (f) Royalty Term. 
 (i) Royalties payable under this Section 9.7
shall be paid by the Commercializing Party on a Royalty-Bearing Product-by-Royalty-Bearing Product and country-by-country basis from the date of First Commercial Sale of each Royalty-Bearing Product with respect to which royalty payments are due
until the latest of: 
 (A) the last to expire of any Valid Claim of Agios Patent Rights or Agios Collaboration Patent Rights,
in each case Covering such Royalty-Bearing Product in such country; 
 (B) [**] years following the date of First Commercial
Sale in such country; and 
 (C) the expiration of Regulatory Exclusivity for such Royalty-Bearing Product in such country.

 (each such term with respect to a Royalty-Bearing Product and a country, a “Royalty Term”). 

  
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 (ii) Notwithstanding the foregoing, (A) in the event that the Royalty Term for a
Royalty-Bearing Product in a country continues solely due to Section 9.7(f)(i)(B) above (i.e., the Royalty-Bearing Product is not Covered by a Valid Claim of Agios Patent Rights or Agios Collaboration Patent Rights in the applicable
country, and such Royalty-Bearing Product is not subject to Regulatory Exclusivity in such country) or (B) in the event that, and for so long as, Generic Competition for a Royalty-Bearing Product occurs in a country, then, in either such event,
the royalty rates in such country will be reduced to [**] percent ([**]%) of the applicable rate in Section 9.7(a), 9.7(b), 9.7(c), 9.7(d) or 9.7(e) in such country. 
 (iii) Upon the expiration of the Royalty Term with respect to a Royalty-Bearing Product in a country, the licenses granted by a Party to the Commercializing Party pursuant to Section 8.2 shall be
deemed to be fully paid-up, irrevocable and perpetual with respect to such Royalty-Bearing Product in such country. 
 (g)
Third Party Payments. 
 (i) Except as otherwise provided in Section 8.9 or Section 14.3(b)(viii)(B), [**]
shall be [**] responsible for [**] amounts payable under the Existing Third Party Agreements with respect to Licensed Compounds and Licensed Products. 
 (ii) At any time, if either Party determines that the Parties should obtain a license under Third Party Patent Rights or Third Party Know-How [**] to use a Collaboration Target or to Develop, Manufacture
or Commercialize Collaboration Compounds, Licensed Compounds and/or Licensed Products, then such Party shall notify the JRC or the JDC, as applicable. 
 (A) If the JRC or JDC agrees by Mutual Consent to obtain such license, the JRC or JDC shall determine which Party should obtain such license; provided that, if the JRC or JDC cannot agree on
which Party should obtain such license, then Celgene shall be the Party to do so if Celgene has exercised the Celgene Program Option (or taken an exclusive license under Section 8.2) for the Program to which the license relates, and Agios shall
do so if Celgene has not yet exercised such Celgene Program Option (or taken an exclusive license under Section 8.2); provided that, with respect to Split Programs, the Parties shall each be entitled to do so for their respective
portions of the Territory; provided further that Agios shall be the Party to obtain such license with respect to any Buy-In Program for which Agios is the Commercializing Party. 

(B) If such license is entered into following the Effective Date, then the costs of such license shall be shared as follows:
(1) the Party who obtains such license shall be solely responsible for all costs under such license prior to the exercise of the Celgene Program Option (or prior to the effective date of Celgene’s exclusive license under Section 8.2)
with respect to the Program to which such license relates and all costs not described in clause (2); and (2) the Parties shall [**] all royalty and milestones costs incurred after the Option Exercise Date (or after the effective date of
Celgene’s exclusive license under Section 8.2) to the extent the costs directly relate to such Program and to events following such Option Exercise Date (or following the effective date of Celgene’s exclusive license under
Section 8.2); provided that, if such license is entered into following the Effective Date but prior to the exercise of the Celgene Program Option (or the effective date of Celgene’s exclusive license under Section 8.2)
with respect to such Program to which such license relates, Celgene may deduct [**] all costs 

  
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paid by Celgene under clause (2) from any milestone incurred after and including the milestone event described in Section 9.6(a)(3) or any royalty payments owed to Agios hereunder with
respect to such Program; provided further that, with respect to Buy-In Programs, the foregoing payment obligations will be borne [**]% by the Commercializing Party and [**]% by the Buy-In Party, with the events described in this
Section 9.7(g)(ii)(B) being based on the date the Buy-In Party exercises its Buy-In Right, rather than the Option Exercise Date. 
 (C) For purposes of this Agreement, the Third Party Patent Rights and Third Party Know-How licensed pursuant to this Section 9.7(g)(ii) shall be deemed “Collaboration Intellectual Property”
of the Party obtaining such license. 
 (D) (1) The Party designated to pursue the license shall keep the other Party
fully informed of the status of the negotiations with the Third Party and provide the other Party with copies of all draft agreements; (2) the other Party may provide comments and suggestions with respect to the negotiation of the agreement
with the Third Party, and the Party seeking the license shall reasonably consider all comments and suggestions reasonably recommended by the other Party; and (3) the Party seeking the license shall obtain a license that is sublicensable to the
other Party in accordance with the terms of this Agreement, treating (unless otherwise agreed by the Parties) the Third Party intellectual property as Collaboration Intellectual Property hereunder and treating the agreement licensing such Third
Party intellectual property in the same way as the Existing Third Party Agreements (including as provided in Section 8.7), except for payment obligations, which will be treated as provided in this Section 9.7(g)(ii). 

(E) If the JRC or JDC does not agree by Mutual Consent that a license proposed pursuant to this Section 9.7(g)(ii) should be
obtained, either Party shall have the right to obtain the license at its own cost (a “Unilateral In-License”). In such event, no rights or licenses obtained under any such Third Party license shall be included in any license granted
under this Agreement by the Party obtaining the license to the other Party, unless and until the other Party agrees to pay its share of the costs of such license as described in Section 9.7(g)(ii)(B) and to reimburse the other Party for the
share of the costs of such license that the non-licensing Party would have paid under Section 9.7(g)(ii)(B) if the Unilateral In-License had been entered into pursuant to Section 9.7(g)(ii)(B). If a Party agrees to make such payments, such
license shall cease to be a Unilateral In-License hereunder. 
 (iii) In the event that royalties are payable by a Party to the
other Party with respect to any Royalty-Bearing Product(s) for which the paying Party is the Commercializing Party under this Section 9.7, such Commercializing Party shall have the right to deduct a maximum of [**] percent ([**]%) of any
royalties or other amounts actually paid by the Commercializing Party to a Third Party with respect to a Unilateral In-License, but only to the extent that the Patent Rights and/or Know-How licensed under such Unilateral In-License are [**] to use
the Collaboration Target to which such Royalty-Bearing Product(s) is directed, or to the Development, Manufacture or Commercialization of such Royalty-Bearing Product(s) in a country(ies) in the Territory (or the US Territory or ROW Territory, as
applicable, with respect to Split Products), from royalty payments otherwise due and payable by such Commercializing Party to the other Party under this Section 9.7 with respect to such Royalty-Bearing Product(s) in such country(ies), on a
Royalty-Bearing Product-by-Royalty-Bearing Product and country-by-

  
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country basis; provided, however, that in no event shall the aggregate deductions permitted by this subsection (iii) reduce the royalties payable by the Commercializing
Party to the other Party with respect to any such Royalty-Bearing Product(s) in such country(ies) for any Calendar Quarter to less than [**] percent ([**]%) of the royalties otherwise due in the absence of any deduction pursuant to this subsection
(iii); provided further that on a Royalty-Bearing Product-by-Royalty-Bearing Product basis, any royalty deductions that are not credited against royalties payable by such Commercializing Party to such other Party for the Calendar
Quarter in which they were accrued due to the limitation in the preceding proviso shall be carried forward and credited against royalties payable by such Commercializing Party to such other Party in subsequent Calendar Quarter(s) hereunder until
such royalty credits are completely expended. 
 Section 9.8 Royalty Reports; Payments. Within [**] calendar days
after the end of any [**], the Commercializing Party with respect to each Royalty-Bearing Product shall provide the other Party with a report stating the sales in units and in value of such Royalty-Bearing Product made by such Commercializing Party,
its Affiliates, licensees and sublicensees, as applicable, in the Territory (or the US Territory or the ROW Territory, as applicable, with respect to Split Products), on a country-by-country basis, together with the calculation of the royalties due
to the other Party, including the method used to calculate the royalties, the exchange rates used, and itemized deductions. Celgene shall also include in its report to Agios notice of the achievement of the sales milestone event set forth in
Section 9.6(c), as applicable. Payments of all amounts payable under Section 9.6 or 9.7 shall be made by Celgene or Agios, as applicable, to the bank account indicated by the other Party concurrently with the delivery of such report.

 Section 9.9 Financial Records. The Parties shall keep, and shall require their respective sublicensees to keep,
complete and accurate books and records in accordance with the applicable Accounting Standards. The Parties shall keep, and shall require their respective sublicensees to keep, such books and records for at least [**] years following the end of the
Calendar Year to which they pertain. Such books of accounts shall be kept at the principal place of business of the financial personnel with responsibility for preparing and maintaining such records. With respect to royalties, such records shall be
in sufficient detail to support calculations of royalties due to the royalty-receiving Party. Celgene and Agios shall also keep, and require their respective sublicensees to keep, complete and accurate records and books of accounts containing all
data reasonably required for the calculation and verification of Manufacturing Costs, Field-Based Costs, Development Costs, and Global Development Costs, including internal FTEs utilized by either Party in Global Studies or other Development
activities. 
 Section 9.10 Audits. 
 (a) Each Party may, upon request and at its expense (except as provided for herein), cause an internationally recognized independent accounting firm selected by it (except one to whom the Auditee has a
reasonable objection), (the “Audit Team”) to audit during ordinary business hours the books and records of the other Party and the correctness of any payment made or required to be made to or by such Party, and any report underlying
such payment (or lack thereof), pursuant to the terms of this Agreement. Prior to commencing its work pursuant to this Agreement, the Audit Team shall enter into an appropriate confidentiality agreement with the Auditee obligating the Audit Team to
be bound by obligations of confidentiality and restrictions on use of such Confidential Information that are no less restrictive than the obligations set forth in Article XI. 

  
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 (b) In respect of each audit of the Auditee’s books and records: (i) the Auditee
may be audited only [**], (ii) no records for any given year for an Auditee may be audited more than [**]; provided that the Auditee’s records shall still be made available if such records impact another financial year which
is being audited, and (iii) the Audit Rights Holder shall only be entitled to audit books and records of an Auditee from the [**] Calendar Years prior to the Calendar Year in which the audit request is made. 

(c) In order to initiate an audit for a particular Calendar Year, the Audit Rights Holder must provide written notice to the Auditee. The
Audit Rights Holder exercising its audit rights shall provide the Auditee with notice of [**] proposed dates of the audit not less than [**] days prior to the first proposed date. The Auditee will reasonably accommodate the scheduling of such audit.
The Auditee shall provide such Audit Team(s) with full and complete access to the applicable books and records and otherwise reasonably cooperate with such audit. 
 (d) The audit report and basis for any determination by an Audit Team shall be made available first for review and comment by the Auditee, and the Auditee shall have the right, at its expense, to request
a further determination by such Audit Team as to matters which the Auditee disputes (to be completed no more than [**] days after the first determination is provided to such Auditee and to be limited to the disputed matters). Such Audit Team shall
not disclose to the Audit Rights Holder any information relating to the business of the Auditee except that which should properly have been contained in any report required hereunder or otherwise required to be disclosed to the Audit Rights Holder
to the extent necessary to verify the payments required to be made pursuant to the terms of this Agreement. 
 (e) If the audit
shows any under-reporting or underpayment, or overcharging by any Party, that under-reporting, underpayment or overcharging shall be reported to the Audit Rights Holder and the underpaying or overcharging Party shall remit such underpayment or
reimburse such overcompensation (together with interest at the rate set forth in Section 9.13) to the underpaid or overcharged Party within [**] days after receiving the audit report. Further, if the audit for an annual period shows an
under-reporting or underpayment or an overcharge by any Party for that period in excess of [**] percent ([**]%) of the amounts properly determined, the underpaying or overcharging Party, as the case may be, shall reimburse the applicable underpaid
or overcharged Audit Rights Holder conducting the audit, for its respective audit fees and reasonable Out-of-Pocket Costs in connection with said audit, which reimbursement shall be made within [**] days after receiving appropriate invoices and
other support for such audit-related costs. 
 (f) For the purposes of the audit rights described herein, an individual Party
subject to an audit in any given year will be referred to as the “Auditee” and the other Party who has certain and respective rights to audit the books and records of the Auditee will be referred to as the “Audit Rights
Holder.” 

  
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 Section 9.11 Tax Matters. 

(a) The royalties, milestones and other amounts payable by a Party to the other Party pursuant to this Agreement
(“Payments”) shall not be reduced on account of any taxes unless required by Law. The receiving Party alone shall be responsible for paying any and all taxes (other than withholding taxes required by Law to be deducted and paid on
the receiving Party’s behalf by the paying Party) levied on account of, or measured in whole or in part by reference to, any Payments it receives. The Parties will cooperate in good faith to obtain the benefit of any relevant tax treaties to
minimize as far as reasonably possible any taxes which may be levied on any Payments. The paying Party shall deduct or withhold from the Payments any taxes that it is required by Law to deduct or withhold. If the receiving Party is entitled under
any applicable tax treaty or any Law to a reduction of the rate of, or the elimination of, applicable withholding tax, it may deliver to the paying Party or the appropriate governmental authority (with the assistance of the paying Party to the
extent that this is reasonably required and is expressly requested in writing) the prescribed forms necessary to reduce the applicable rate of withholding or to relieve the paying Party of its obligation to withhold tax, and the paying Party shall
apply the reduced rate of withholding tax, or dispense with withholding tax, as the case may be; provided that the paying Party has received evidence of the receiving Party’s delivery of all applicable forms (and, if necessary,
its receipt of appropriate governmental authorization) at least [**] days prior to the time that the Payment is due. If, in accordance with the foregoing, the paying Party withholds any amount, it shall make timely payment to the proper taxing
authority of the withheld amount, and send to the receiving Party proof of such payment within [**] days following that latter payment. 
 (b) Notwithstanding the foregoing, if the rights and obligations of the paying Party hereunder are assigned to an Affiliate or Third Party outside of the United States or Switzerland pursuant to
Section 15.4, and if such Affiliate or Third Party shall be required by Law to withhold any additional taxes from or in respect of any sum payable under this Agreement as a result of such assignment, then any such sum payable under this
Agreement shall be increased to take into account the additional taxes withheld as may be necessary so that, after making all required withholdings, the receiving Party receives an amount equal to the sum it would have received had no such
assignment been made; provided, however, that, if the rights and obligations of the paying Party hereunder are assigned to an Affiliate or Third Party outside of the United States or Switzerland pursuant to Section 15.4 and
if at the time of such assignment such Affiliate or Third Party is not required by Law to withhold any additional taxes as a result of such assignment, the paying Party shall not be required to increase any such sum payable under this Agreement in
the event of a change in Law. In addition, if the rights and obligations of the receiving Party hereunder are assigned to an Affiliate or Third Party pursuant to Section 15.4, the paying Party shall not have an obligation to pay an additional
sum pursuant to this Section 9.11(b) to the extent that the additional sum would not have been due pursuant to this Section 9.11(b) if the rights and obligations of the receiving Party hereunder had not been assigned to an Affiliate or
Third Party pursuant to Section 15.4. 

  
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 Section 9.12 Currency Exchange. 

(a) Unless otherwise expressly stated in this Agreement, all amounts specified in, and all payments made under, this Agreement shall be
in United States Dollars. If any currency conversion shall be required in connection with the calculation of amounts payable under this Agreement, such conversion shall be made using the average of the buying and selling exchange rate for conversion
of the applicable foreign currency into United States Dollars, quoted for current transactions reported in The Wall Street Journal (U.S., Eastern Edition) for the last [**] Business Days of the Calendar Quarter to which such payment pertains.

 (b) Where royalty amounts are due for Net Sales in a country where, for reasons of currency, tax or other regulations,
transfer of foreign currency out of such country is prohibited, the Commercializing Party has the right to place royalties due to the other Party in a bank account in such country in the name of and under the sole control of such other Party;
provided, however, that the bank selected be reasonably acceptable to such other Party and that the Commercializing Party inform such other Party of the location, account number, amount and currency of money deposited therein.
After such other Party has been so notified, those monies shall be considered as royalties duly paid to such Party and will be completely controlled by such Party. 
 (c) When in any country in the Territory applicable Law prohibits both the transmittal and the deposit of royalties on sales in such country, royalty payments due on Net Sales shall be suspended for as
long as such prohibition is in effect and as soon as such prohibition ceases to be in effect, all royalties that the Commercializing Party would have been under an obligation to transmit or deposit but for the prohibition shall forthwith be
deposited or transmitted, to the extent allowable. 
 Section 9.13 Late Payments. The paying Party shall pay
interest to the receiving Party on the aggregate amount of any payments that are not paid on or before the date such payments are due under this Agreement at a rate per annum equal to the lesser of the [**] month LIBOR plus [**] percent ([**]%), as
reported by The Wall Street Journal, or the highest rate permitted by applicable Law, calculated on the number of days such payments are paid after the date such payments are due; provided that, with respect to any disputed payments,
no interest payment shall be due until such dispute is resolved and the interest which shall be payable thereon shall be based on the finally-resolved amount of such payment, calculated from the original date on which the disputed payment was due
through the date on which payment is actually made. 
 Article X 

Intellectual Property Ownership, Protection and Related Matters 

Section 10.1 Ownership of Inventions. 
 (a) Non-Collaboration Know-How. Any Know-How developed or generated by Celgene or Agios prior to or outside the Collaboration shall remain the sole property of such Party. 

(b) Sole Inventions. All Collaboration Know-How developed or generated solely by employees, agents and consultants of a Party
shall be owned exclusively by such Party. 
 (c) Joint Inventions. All Collaboration Know-How developed or generated
jointly by employees, agents and consultants of Celgene, on the one hand, and employees, agents and consultants of Agios, on the other hand (“Joint Inventions” and, any Patent Rights Covering

  
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such Joint Inventions, “Joint Patents”) shall be owned jointly on the basis of each Party having an undivided interest without a duty to account to the other Party and shall be
deemed to be Controlled by each Party. Each Party shall have the right to use such Joint Inventions, or license such Joint Inventions to its Affiliates or any Third Party, or sell or otherwise transfer its interest in such Joint Inventions to its
Affiliates or a Third Party, in each case without the consent of the other Party (and, to the extent that applicable Law requires the consent of the other Party, this Section 10.1(c) shall constitute such consent), so long as such use, sale,
license or transfer is subject to Section 8.8 and the licenses granted pursuant to this Agreement and is otherwise consistent with this Agreement. 
 (d) Notice. Each Party agrees to provide regular [**] written reports disclosing to the other Party all Collaboration Intellectual Property developed or generated by employees, agents and
consultants of such Party and all Agios Intellectual Property and Celgene Intellectual Property that becomes subject to this Agreement, which disclosures may be made in connection with the updates made in accordance with Sections 3.1(b) and 3.8(c).

 (e) Inventorship. The determination of inventorship shall be made in accordance with United States patent laws. In the
event of a dispute regarding inventorship, if the Parties are unable to resolve the dispute, the Parties shall jointly engage [**] to resolve such dispute. The decision of such [**] shall be binding on the Parties with respect to the issue of
inventorship. 
 (f) Further Actions and Assignments. Each Party shall take all further actions and execute all
assignments requested by the other Party and reasonably necessary or desirable to vest in the other Party the ownership rights set forth in this Article X. 
 Section 10.2 Prosecution of Patent Rights. Subject to the terms and conditions of the Existing Third Party Agreements to the extent such agreement applies to the Agios Patent Rights or Agios
Collaboration Patent Rights, the following provisions shall apply with respect to the Agios Patent Rights, Celgene Patent Rights and Collaboration Patent Rights: 
 (a) Agios Patent Rights Prosecuted by Agios. Subject to the provisions of Section 10.2(f), prior to the exercise of the Celgene Program Option by Celgene (or, if applicable, the effective date
of Celgene’s license to Agios Intellectual Property and Agios Collaboration Intellectual Property under Section 8.2), Agios shall have the initial right and option to Prosecute the Agios Patent Rights and Agios Collaboration Patent Rights
(excluding Joint Patents). Following the Option Exercise Date (or, if applicable, the effective date of Celgene’s license to Agios Intellectual Property and Agios Collaboration Intellectual Property under Section 8.2), Agios shall have the
initial right and option to Prosecute the Agios Patent Rights and Agios Collaboration Patent Rights (excluding Joint Patents) with respect to which Celgene does not have the initial right to Prosecute pursuant to Section 10.2(b). In the event
that Agios declines to Prosecute such Patent Rights that relate to a Licensed Program or Celgene Reverted Program, it shall give Celgene reasonable notice to this effect, sufficiently in advance to permit Celgene to undertake such Prosecution in
such country without a loss of rights, and thereafter Celgene may, upon written notice to Agios, Prosecute such Patent Rights in Agios’ name. 

  
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 (b) Agios Patent Rights Prosecuted by Celgene. Following the Option Exercise Date
(or, if applicable, the effective date of Celgene’s license to Agios Intellectual Property and Agios Collaboration Intellectual Property under Section 8.2), Celgene shall have the initial right and option to Prosecute any Agios Patent
Right or Agios Collaboration Patent Right (excluding Joint Patents) that are Core Patent Rights and that Cover a Licensed Compound or Licensed Product (and the applicable Program, including, with respect to Split Programs, Patent Rights for the US
Territory, but excluding Buy-In Compounds or Buy-In Products and the applicable Buy-In Program for which Agios is the Commercializing Party) or a Celgene Reverted Compound or Celgene Reverted Product (and the applicable Program); provided
that, with respect to Split Programs, Celgene’s right to Prosecute shall apply to [**] Split Program, beginning with the [**] Split Program (i.e., the [**] Split Program, [**] Split Program, etc.). In the event that Celgene declines
to Prosecute such Patent Rights, it shall give Agios reasonable notice to this effect, sufficiently in advance to permit Agios to undertake such Prosecution in such country without a loss of rights, and thereafter Agios may, upon written notice to
Celgene, Prosecute such Patent Rights in Agios’ name. 
 (c) Celgene Patent Rights. Celgene shall have the sole
right and option to Prosecute the Celgene Patent Rights and the Celgene Collaboration Patent Rights (excluding Joint Patents). Except with respect to the Celgene Collaboration Patent Rights that are exclusively licensed to Agios under
Section 8.2, Celgene’s Prosecution shall not be subject to the diligence and cooperation provisions of Section 10.2(f) below. Following the effective date of Agios’ license to Celgene Collaboration Intellectual Property under
Section 8.2, if Celgene declines to Prosecute any Celgene Collaboration Patent Rights exclusively licensed to Agios pursuant to Section 8.2, Celgene shall give Agios reasonable notice to this effect, sufficiently in advance to permit Agios
to undertake such Prosecution for such Celgene Collaboration Patent Rights in such country without a loss of rights, and thereafter Agios may, upon written notice to Celgene, Prosecute such Patent Rights in Celgene’s name. 

(d) Joint Patents. The Parties, acting by Mutual Consent, shall determine which Party shall have the initial right and option to
Prosecute Joint Patents; provided that (i) if the Parties cannot agree by Mutual Consent, (x) Agios, prior to the Option Exercise Date (or, if applicable, the effective date of Celgene’s license to Agios Intellectual
Property and Agios Collaboration Intellectual Property under Section 8.2), shall have such initial right and option with respect to Joint Patents that relate to a Discovery Program, and Agios shall have the initial right and option with respect
to Joint Patents that relate to Buy-In Programs for which Agios is the Commercializing Party, and (y) Celgene, following the Option Exercise Date (or, if applicable, the effective date of Celgene’s license to Agios Intellectual Property
and Agios Collaboration Intellectual Property under Section 8.2), shall have the initial right and option with respect to Joint Patents that are Core Patent Rights and that Cover a Licensed Compound or Licensed Product (and the applicable
Program, including, with respect to Split Programs, Patent Rights for the US Territory, but excluding Buy-In Compounds or Buy-In Products and the applicable Buy-In Program for which Agios is the Commercializing Party) or a Celgene Reverted Compound
or Celgene Reverted Product (and the applicable Celgene Reverted Program); provided that, with respect to Split Programs, Celgene’s right to Prosecute shall apply to [**] Split Program, beginning with the [**] Split Program
(i.e., the [**] Split Program, [**] Split Program, etc.); provided further that, regardless of whether the Option Exercise Date or effective date of a license has occurred, Celgene shall have the initial right and option
with 

  
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respect to Joint Patents that claim or embody an improvement to technology claimed or embodied in Celgene Intellectual Property; (ii) in the event that the Party with the initial right to
Prosecute declines the option to Prosecute any such Patent Right in any country, such Party shall give the other Party reasonable notice to this effect, sufficiently in advance to permit such other Party to undertake such Prosecution in such country
without a loss of rights, and thereafter such other Party may, upon written notice to the first Party, Prosecute such Patent Rights in both Parties’ names, with expenses shared as provided in Section 10.2(e); and (iii) in the event
that either Party does not want to share in the costs of such Prosecution, such Party shall notify the other Party thereof at least [**] days prior to the date of any applicable filing deadline and shall, and hereby does, assign to the other Party
all of its right, title and interest in and to the applicable Joint Patent (and underlying Joint Invention). 
 (e) Costs and
Expenses. Agios shall bear its own costs and expenses in Prosecuting Agios Patent Rights and Agios Collaboration Patent Rights pursuant to Section 10.2(a) and 10.2(b) or Celgene Collaboration Patent Rights pursuant to Section 10.2(c).
Celgene shall bear its own costs and expenses in Prosecuting Agios Patent Rights, Agios Collaboration Patent Rights, Celgene Patent Rights and Celgene Collaboration Patent Rights pursuant to Sections 10.2(a), 10.2(b) and 10.2(c). The Parties shall
jointly bear all costs and expenses in Prosecuting Joint Patents pursuant to Section 10.2(d), except as provided in clause (iii) of such section. 
 (f) Diligence and Cooperation. 
 (i) The Prosecuting Party shall be
entitled to use patent counsel selected by it and reasonably acceptable to the non-Prosecuting Party (including in-house patent counsel as well as outside patent counsel) for the Prosecution of the Patents Rights subject to Section 10.2(a),
(b), (c), or (d). Each Party agrees to cooperate with the other with respect to the Prosecution of such Patent Rights pursuant to this Section 10.2, including (x) executing all such documents and instruments and performing such acts as may
be reasonably necessary in order to permit the other Party to undertake any Prosecution of Patent Rights that such other Party is entitled, and has elected, to Prosecute, as provided for in Sections 10.2(a), 10.2(b), 10.2(c) and 10.2(d), and
(y) giving consideration to the proper scope of Patent Rights, including the scope of disclosure of Patent Rights as to Back-Up Compounds. The Prosecuting Party shall: 
 (A) regularly provide the other Party in advance with reasonable information relating to the Prosecuting Party’s Prosecution of Patent Rights hereunder, including by providing copies of substantive
communications, notices and actions submitted to or received from the relevant patent authorities and copies of drafts of filings and correspondence that the Prosecuting Party proposes to submit to such patent authorities, each of which shall be
provided at least [**] days prior to any filing or response deadlines, or within [**] Business Days of the Prosecuting Party’s receipt of any official correspondence if such correspondence only allows for [**] days or less to respond;
provided that, if the foregoing time periods are not practicable under the circumstances, the Prosecuting Party shall provide such copies as far in advance as is practicable but with sufficient time for the non-Prosecuting party to provide
meaningful input; 

  
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 (B) consider in good faith and consult with the non-Prosecuting Party regarding its timely
comments with respect to the same; 
 (C) with respect to Patent Rights in the non-Prosecuting Party’s portion of the
Territory (i.e., the US Territory if the non-Prosecuting Party is Agios, and the ROW Territory if the non-Prosecuting Party is Celgene) Covering Split Compounds or Split Products, (1) if, after taking into account the non-Prosecuting
Party’s commercial interests in its portion of the Territory, the Prosecuting Party does not intend to incorporate particular comments provided by the non-Prosecuting Party with respect such Patent Rights, notify the non-Prosecuting Party
reasonably in advance to allow the Parties to discuss the Prosecuting Party’s rationale for not incorporating such comments; and (2) if after such discussion, the non-Prosecuting Party and Prosecuting Party do not agree on a course of
action, the matter shall be referred to the JSC for resolution as set forth in Section 10.2(f)(iv); 
 (D) use
Commercially Reasonable Efforts to Prosecute additional claims substantially similar to those suggested by the non-Prosecuting Party, if any, in such jurisdictions of the Territory reasonably requested by the non-Prosecuting Party; and 

(E) consult with the non-Prosecuting Party before taking any action that would have a material adverse impact on the scope of claims
within the Agios Patent Rights or Collaboration Patent Rights, as applicable. 
 (ii) To the extent Agios is the Prosecuting
Party, the Parties shall determine by Mutual Consent the countries in which Agios shall Prosecute Agios Patent Rights and Agios Collaboration Patent Rights (including Joint Patents), with the understanding that the countries set forth on Schedule
10.2(f) shall generally form the basis for the overall Prosecution strategy for the Agios Patent Rights and Agios Collaboration Patent Rights (including Joint Patents) related to a Licensed Program (including Split Programs) or Celgene Reverted
Program; provided that, if the Parties are unable to determine by Mutual Consent the countries in which such filings will be made, Celgene shall have the right to make the final determination of such matter and may exercise the step-in rights
available to it under Section 10.2(a) if Agios declines to Prosecute in any such country. Further, Agios shall consult with Celgene well in advance of [**] and [**] deadlines as to additional countries (if any) in which Celgene desires that the
Agios Patent Rights and Agios Collaboration Patent Rights be Prosecuted. 
 (iii) The Prosecuting Party agrees not to abandon
the subject matter of a claim in an Agios Patent Right or Agios Collaboration Patent Right or narrow such claim except in response to an office action from the applicable patent office that, in the Prosecuting Party’s reasonable judgment after
consultation with the non-Prosecuting Party, requires such abandonment or narrowing; provided that, prior to such abandonment or narrowing, if feasible, the Parties will co-operate to file divisional or continuation applications to separate
such claim such that Celgene may Prosecute claims to the extent related to Licensed Compounds, Licensed Products, Celgene Reverted Compounds, and Celgene Reverted Products and Agios may Prosecute the remaining claims. 

  
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 (iv) With respect to Agios Patent Rights and Agios Collaboration Patent Rights (including
Joint Patents) related to Split Programs, [**] shall agree upon a strategy (which may be updated from time to time) for Prosecution of such Patent Rights, including [**] to be pursued within such Patent Rights and to [**]; provided
that, if the Parties are unable to determine by Mutual Consent the countries in which the Patent Rights shall be Prosecuted, the provisions of Section 10.2(f)(ii) shall apply if Agios is the Prosecuting Party with respect to such Split
Program, and Celgene shall have the right to make the final determination of the countries in which to file if Celgene is the Prosecuting Party; provided that, in either case, such Patent Rights shall be prosecuted in the US Territory
unless Agios otherwise consents. Thereafter, the Prosecuting Party shall follow such strategy in connection with all Prosecution of Patent Rights related to Split Programs unless [**] approves of a divergence from such strategy. [**] (with
escalation through the Executive Officers, as provided in Section 2.8) shall resolve [**] any disputes arising between the non-Prosecuting Party and Prosecuting Party under Section 10.2(f)(i)(C) with respect to Prosecution of Patent Rights
in the non-Prosecuting Party’s portion of the Territory related to Split Compounds or Split Products, after taking into account the non-Prosecuting Party’s [**] in its portion of the Territory, by determining if the non-Prosecuting
Party’s position should be implemented under the circumstances and instructing the Prosecuting Party to take appropriate action; provided that, if [**] has not yet decided the matter and the deadline for taking an action is within
[**] Business Days, the Prosecuting Party shall have the right to take action(s) necessary to preserve the Patent Rights. 
 (g)
Third Party Rights. Agios covenants and agrees that it shall not grant any Third Party any right to control the Prosecution of the Agios Patent Rights or Agios Collaboration Patent Rights or to approve or consult with respect to any Patent
Rights licensed to Celgene hereunder, in any case, that is more favorable to the Third Party than the rights granted to Celgene hereunder or that otherwise conflicts with Celgene’s rights hereunder. 

(h) Existing Third Party Agreements. Each Party acknowledges that, pursuant to the Existing Third Party Agreements, the applicable
licensors thereunder Prosecute the Agios Patent Rights covered by such agreements; provided that Agios may have certain rights to assume Prosecution under such agreements and Agios has certain rights to Prosecute “Joint Patent
Rights” under the [**] Agreement. Agios agrees to keep Celgene fully informed of these rights, as well as provide to Celgene all information and copies of documents received from the licensors under the Existing Third Party Agreements or their
patent counsel relating to the Agios Patent Rights covered by such agreements. To the extent that Agios is permitted to proceed with Prosecution or provide comments or suggestions to patent documents under any Existing Third Party Agreement, then
the Agios Patent Rights under such Existing Third Party Agreement shall be treated in the same manner as other Agios Patent Rights under this Section 10.2, and Agios shall exercise all such rights with respect to such Agios Patents Rights
pursuant to the instructions of Celgene, if Celgene is given the right to act under this Section 10.2. 
 Section 10.3
Third Party Infringement. Subject to the terms and conditions of the Existing Third Party Agreements to the extent such agreement applies to the Agios Patent Rights or Agios Collaboration Patent Rights, the following provisions shall apply
with respect to the Agios Patent Rights and Collaboration Patent Rights: 
 (a) Notice. Each Party shall immediately
provide the other Party with written notice reasonably detailing any (i) known or alleged infringement of any Agios Patent Rights or Collaboration Patent Rights, or known or alleged misappropriation of any Agios Know-How or

  
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Collaboration Know-How, by a Third Party, (ii) “patent certification” filed in the United States under 21 U.S.C. §355(b)(2) or 21 U.S.C. §355(j)(2) or similar provisions
in other jurisdictions, and (iii) any declaratory judgment, opposition, or similar action alleging the invalidity, unenforceability or non-infringement of any such intellectual property rights (collectively “Third-Party
Infringement”). 
 (b) Infringement Actions. 

(i) As between the Parties, except as provided in Section 10.3(b)(iv), Agios shall have the initial right, but not the obligation,
to initiate a suit or take other appropriate action that it believes is reasonably required to protect the Agios Intellectual Property or Agios Collaboration Intellectual Property (excluding Joint Inventions). To the extent that any such suit or
action pertains to the infringement, unauthorized use or misappropriation by a Third Party of Agios Intellectual Property or Agios Collaboration Intellectual Property that relates to a Program for which Celgene has a Celgene Program Option that has
been exercised or that remains in effect and has not been waived or rejected (or a Program or Celgene Reverted Program with respect to which Celgene has taken an exclusive license under Section 8.2) (“Competitive
Infringement”), Agios shall give Celgene advance notice of its intent to file any such suit or take any such action and the reasons therefor, and shall provide Celgene with an opportunity to make suggestions and comments regarding such suit
or action. Thereafter, Agios shall keep Celgene promptly informed, and shall from time to time consult with Celgene regarding the status of any such suit or action and shall provide Celgene with copies of all material documents (e.g.,
complaints, answers, counterclaims, material motions, orders of the court, memoranda of law and legal briefs, interrogatory responses, depositions, material pre-trial filings, expert reports, affidavits filed in court, transcripts of hearings and
trial testimony, trial exhibits and notices of appeal) filed in, or otherwise relating to, such suit or action. 
 (ii) Except
as provided in Section 10.3(b)(iv), Celgene shall have the sole right, but not the obligation, to initiate a suit or take other appropriate action that it believes is reasonably required to protect the Celgene Intellectual Property and Celgene
Collaboration Intellectual Property (excluding Joint Inventions), without any obligation to consult with Agios. Notwithstanding Section 10.3(e), except with respect to a suit or action described in Section 10.3(b)(iv), all recoveries with
respect to any such action, by settlement or otherwise, shall be retained [**] percent ([**]%) by Celgene. 
 (iii) Except as
provided in Section 10.3(b)(iv), the Parties, acting by Mutual Consent, shall determine which Party shall have the initial right, but not the obligation, to initiate a suit or take other appropriate action that the Parties believe is reasonably
required to protect the Joint Inventions. Thereafter, the Party authorized to initiate a suit or take other appropriate action shall keep the other Party promptly informed, and shall from time to time consult with the other Party regarding the
status of any such suit or action and shall provide the other Party with copies of all material documents (e.g., complaints, answers, counterclaims, material motions, orders of the court, memoranda of law and legal briefs, interrogatory
responses, depositions, material pre-trial filings, expert reports, affidavits filed in court, transcripts of hearings and trial testimony, trial exhibits and notices of appeal) filed in, or otherwise relating to, such suit or action. 

  
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 (iv) On a Program-by-Program, Celgene Reverted Program-by-Celgene Reverted Program, or
Agios Reverted Program-by-Agios Reverted Program basis, as applicable, the Lead Party shall have the initial right, but not the obligation, to initiate a suit or take other appropriate action that it believes is reasonably required to protect the
Agios Intellectual Property, Agios Collaboration Intellectual Property and Joint Inventions relating to such Program, Celgene Reverted Program, or Agios Reverted Program, as applicable, against Competitive Infringement or to protect the Celgene
Collaboration Patent Rights exclusively licensed to Agios under Section 8.2 to the extent related to a Split Program, a Buy-In Program for which Agios is the Commercializing Party, or an Agios Reverted Program against Competitive Infringement.
The Lead Party shall give the other Party advance notice of its intent to file any such suit or take any such action and the reasons therefor, and shall provide the other Party with an opportunity to make suggestions and comments regarding such suit
or action. Thereafter, the Lead Party shall keep the other Party promptly informed, and shall from time to time consult with the other Party regarding the status of any such suit or action and shall provide the other Party with copies of all
material documents (e.g., complaints, answers, counterclaims, material motions, orders of the court, memoranda of law and legal briefs, interrogatory responses, depositions, material pre-trial filings, expert reports, affidavits filed in
court, transcripts of hearings and trial testimony, trial exhibits and notices of appeal) filed in, or otherwise relating to, such suit or action. Without limiting the generality of the foregoing, in the case of a Split Program, Agios (as Lead Party
in the US Territory) and Celgene (as Lead Party in the ROW Territory) shall discuss in good faith each Party’s intended response to a Competitive Infringement. 
 (c) Step-in Rights. If Agios fails to initiate a suit or take such other appropriate action under Section 10.3(b)(i), the Party authorized to initiate a suit or take such other appropriate
action under Section 10.3(b)(iii) or the Lead Party fails to initiate a suit or take such other appropriate action under Section 10.3(b)(iv) above (such Party, the “Responsible Party”) within [**] days after becoming aware
of the Competitive Infringement, then the other Party may, in its discretion, provide the Responsible Party with written notice of the other Party’s intent to initiate a suit or take other appropriate action. If the other Party provides such
notice and the Responsible Party fails to initiate a suit or take such other appropriate action within [**] days after receipt of such notice from the other Party, then the Party that is not the Responsible Party shall have the right to initiate a
suit or take other appropriate action that it believes is reasonably required to protect the applicable Agios Intellectual Property, Agios Collaboration Intellectual Property, Celgene Collaboration Patent Rights (but only to the extent provided in
Section 10.3(b)(iv)) and Joint Inventions related to the applicable Program, Celgene Reverted Program, or Agios Reverted Program, as applicable. The Party that is not the Responsible Party shall give the Responsible Party advance notice of its
intent to file any such suit or take any such action and the reasons therefor and shall provide the Responsible Party with an opportunity to make suggestions and comments regarding such suit or action. Thereafter, the Party that is not the
Responsible Party shall keep the Responsible Party promptly informed and shall from time to time consult with the Responsible Party regarding the status of any such suit or action and shall provide the Responsible Party with copies of all material
documents (e.g., complaints, answers, counterclaims, material motions, orders of the court, memoranda of law and legal briefs, interrogatory responses, depositions, material pre-trial filings, expert reports, affidavits filed in court,
transcripts of hearings and trial testimony, trial exhibits and notices of appeal) filed in, or otherwise relating to, such suit or action. 

  
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 (d) Conduct of Action; Costs. The Party initiating suit shall have the sole and
exclusive right to select counsel for any suit initiated by it under this Section 10.3, which counsel must be reasonably acceptable to the other Party. If required under applicable Law in order for such Party to initiate and/or maintain such
suit, the other Party shall join as a party to the suit. If requested by the Party initiating suit, the other Party shall provide reasonable assistance to the Party initiating suit in connection therewith at no charge to such Party except that the
initiating Party shall reimburse the other Party for Out-of-Pocket Costs incurred in rendering such assistance. The Party initiating suit shall assume and pay all of its own Out-of-Pocket Costs incurred in connection with any litigation or
proceedings described in this Section 10.3, including the fees and expenses of the counsel selected by it. The other Party shall have the right to participate and be represented in any such suit by its own counsel at its own expense.

 (e) Recoveries. To the extent that any such suit or action pertains to Licensed Compounds or Licensed Products,
Celgene Reverted Compounds or Celgene Reverted Products, or Agios Reverted Compounds or Agios Reverted Products (but only, with respect to Agios Reverted Compounds or Agios Reverted Products, to the extent such suit or action pertains to Celgene
Collaboration Patent Rights exclusively licensed to Agios as described in Section 10.3(b)(iv)), any recovery obtained as a result of any proceeding described in this Section 10.3 or from any counterclaim or similar claim asserted in a
proceeding described in Section 10.4, by settlement or otherwise, shall be applied in the following order of priority: 

(i) first, the Party initiating the suit or action shall be reimbursed for all Out-of-Pocket Costs in connection with such proceeding;
and 
 (ii) second, any remainder shall be paid [**] percent ([**]%) to the Party initiating the suit or action, and [**]
percent ([**]%) to the other Party. 
 (f) Existing Third Party Agreements. In the event that (i) a Patent Right
covered by one of the Existing Third Party Agreements is at issue in an action under this Section 10.3 or Section 10.4, (ii) Agios has a right to enforce the Agios Patent Rights under such Existing Third Party Agreement, and
(iii) Celgene desires to enforce such Patent in accordance with the procedures under this Section 10.3 or Section 10.4, as applicable, then Agios shall either obtain the licensor’s consent under the Existing Third Party Agreement
so that Celgene may file such an action in its own name or shall undertake such an action on Celgene’s behalf. 

Section 10.4 Claimed Infringement; Claimed Invalidity. 

(a) Infringement of Third Party Rights. Each Party shall promptly notify the other Party in writing of any allegation by a Third
Party that the activity of either Party or their Affiliates or Licensee Partners under this Agreement infringes or may infringe the intellectual property rights of such Third Party. Unless otherwise agreed by the Parties, the Lead Party shall have
the first right, at its expense, to control the defense of any claim alleging that the Development, Manufacture or Commercialization of any Licensed Product or Licensed Compound in the Territory infringes any such Third Party rights. If the Lead
Party fails to proceed in a timely manner with respect to such defense, the other Party shall have the right to control the defense of any such claim. Irrespective of which Party defends the claim, the Parties shall mutually agree on the choice of
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their implementation with respect to such activities. Each Party shall have the right to participate in the defense of any such claim with counsel of its own choice at its own expense. Neither
Party shall have the right to settle any claim or litigation described in this Section 10.4 without the other Party’s prior written consent, which consent shall not be unreasonably withheld or delayed. 

(b) Patent Invalidity Claim. If a Third Party at any time asserts a claim that any Agios Patent Right or Agios Collaboration
Patent Right (including Joint Patents) is invalid or otherwise unenforceable (an “Invalidity Claim”), whether as a defense in an infringement action brought by Agios or Celgene pursuant to Section 10.3, in a declaratory
judgment action or in a Third-Party Infringement claim brought against Agios or Celgene, the Parties shall cooperate with each other in preparing and formulating a response to such Invalidity Claim; provided that, subject to the terms and
conditions of the Existing Third Party Agreements to the extent any such agreement applies to such Agios Patent Right or Agios Collaboration Patent Right, the Lead Party shall have the sole right to control the defense and settlement of any such
Invalidity Claim primarily involving any Agios Patent Right or Agios Collaboration Patent Right (including Joint Patents), in either case, relating to the Program for which such Party is the Lead Party, and Agios shall have the sole right to control
the defense and settlement of any such Invalidity Claim primarily involving any other Agios Patent Right or Agios Collaboration Patent Rights; provided further that the Lead Party shall not settle or compromise any Invalidity Claim without
the consent of the other Party. 
 Section 10.5 Patent Term Extensions. The Parties shall, as necessary and
appropriate, use reasonable efforts to agree upon a joint strategy for obtaining, and cooperate with each other in obtaining, patent term extensions for Agios Patent Rights and Agios Collaboration Patent Rights, or at Celgene’s election Celgene
Patent Rights and Celgene Collaboration Patent Rights, that Cover Licensed Products; provided that, if elections with respect to obtaining such patent term extensions are to be made, Celgene shall have the right to make the election to seek
patent term extension, subject to the terms and conditions of the Existing Third Party Agreements to the extent any such agreement applies to such Agios Patent Right or Agios Collaboration Patent Right (except that with respect to a Split Program,
Agios shall have the right to make such election in the US Territory). The Parties shall also, as necessary and appropriate, use reasonable efforts to agree upon a joint strategy for obtaining, and cooperate with each other in obtaining, Regulatory
Exclusivity regarding any product that the Parties propose to Commercialize as part of the Collaboration under this Agreement. 

Section 10.6 Patent Marking. Each Party shall comply with the patent marking statutes in each country in which the Licensed
Product is Manufactured or Commercialized by or on behalf of a Party or their respective Affiliates or sublicensees, as applicable, hereunder. 
 Section 10.7 CREATE Act Application. It is agreed and acknowledged that this Agreement establishes a qualifying collaboration within the scope of the U.S. CREATE Act and, accordingly, shall be
deemed to constitute a “Joint Research Agreement” for all purposes under the CREATE Act. Neither Party shall invoke the provisions of the CREATE Act, or file this Agreement, in connection with the prosecution of any patent application
claiming, in whole or in part, any CREATE Act invention without the prior written consent of the other Party. In the event that a Party, during the course of prosecuting a patent application claiming a CREATE Act

  
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invention (a “CREATE Act Patent”), deems it necessary to file a terminal disclaimer to overcome an obviousness type double patenting rejection in view of an earlier filed patent
held by the other Party (the “Earlier Patent”), then, if the Parties agree, the Parties shall coordinate the filing of such terminal disclaimer in good faith, and, to the extent required under the CREATE Act, both Parties shall
agree, in such terminal disclaimer, that they shall not separately enforce the CREATE Act Patent independently from the Earlier Patent. To this end, to the extent required under the CREATE Act, following the filing of such terminal disclaimer, the
Parties shall, in good faith, coordinate all enforcement actions with respect to the CREATE Act Patent. 
 Section 10.8
Challenges to Patent Rights. 
 (a) Without limiting Celgene’s obligations pursuant to Section 8.7(b), if
Celgene or any of its Affiliates or any of its sublicensees under the licenses granted to Celgene in this Agreement (i) initiates or requests an interference or opposition proceeding with respect to any Agios Patent Right or Agios Collaboration
Patent Right that is directed to a Collaboration Target, Licensed Compound or Licensed Product, (ii) makes, files or maintains any claim, demand, lawsuit, or cause of action to challenge the validity or enforceability of any Agios Patent Right
or Agios Collaboration Patent Right that is directed to a Collaboration Target, Licensed Compound or Licensed Product, or (iii) funds or otherwise provides material assistance to any other Person with respect to any of the foregoing (any of the
actions described in the foregoing clauses (i), (ii) and (iii), a “Challenge”), and if the outcome of such Challenge is that any claim of an Agios Patent Right or Agios Collaboration Patent Right that Covers a Collaboration
Target, Licensed Compound or Licensed Products and that is subject to such Challenge remains valid and enforceable, then (A) Celgene shall [**] Agios in connection with such Challenge, and (B) all royalty amounts payable by Celgene to
Agios hereunder with respect to any Licensed Product Covered by any such remaining valid and enforceable claim of a Challenged Agios Patent Right or Agios Collaboration Patent Rights shall [**] of the otherwise applicable royalty amounts payable
hereunder. 
 (b) Without limiting Celgene’s obligations pursuant to Section 10.8(a), Celgene shall not, and shall
ensure that its Affiliates and its sublicensees under the licenses granted to Celgene in this Agreement do not, use or disclose any Confidential Information of Agios or any nonpublic information regarding the filing, prosecution, maintenance or
enforcement of any Agios Patent Rights or Agios Collaboration Patent Rights to which Celgene or any of its Affiliates or sublicensees are or become privy as a consequence of the rights granted to Celgene pursuant to this Article X, in initiating,
requesting, making, filing or maintaining, or in funding or otherwise assisting any other Person with respect to, any Challenge. 
 (c) The provisions of Sections 10.8(a) and 10.8(b) shall apply with respect to Celgene Collaboration Patent Rights exclusively licensed to Agios pursuant to Section 8.2, in each case, substituting
“Celgene” for “Agios” and vice versa with respect to all obligations and definitions, and otherwise mutatis mutandis. 

  
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 Article XI 
 Confidentiality 
 Section 11.1 Confidential Information. All
Confidential Information of a Party (“Disclosing Party”) shall not be used by the other Party (the “Receiving Party”) except in performing its obligations or exercising rights explicitly granted under this Agreement
and shall be maintained in confidence by the Receiving Party and shall not otherwise be disclosed by the Receiving Party to any Third Party, without the prior written consent of the Disclosing Party with respect to such Confidential Information,
except to the extent that the Confidential Information: 
 (a) was known by the Receiving Party or its Affiliates prior to its
date of disclosure to the Receiving Party; or 
 (b) is lawfully disclosed to the Receiving Party or its Affiliates by sources
other than the Disclosing Party rightfully in possession of the Confidential Information; or 
 (c) becomes published or
generally known to the public through no fault or omission on the part of the Receiving Party, its Affiliates or its sublicensees; or 
 (d) is independently developed by or for the Receiving Party or its Affiliates without reference to or reliance upon such Confidential Information, as established by written records. 

Section 11.2 Permitted Disclosure. The Receiving Party may provide the Disclosing Party’s Confidential Information:

 (a) to the Receiving Party’s respective employees, consultants and advisors, and to the employees, consultants and
advisors of such Party’s Affiliates, who have a need to know such information and materials for performing obligations or exercising rights expressly granted under this Agreement and have an obligation to treat such information and materials as
confidential; 
 (b) to patent offices in order to seek or obtain Patent Rights or to Regulatory Authorities in order to seek or
obtain approval to conduct Clinical Trials or to gain Regulatory Approval with respect to Agreement Compounds as contemplated by this Agreement; provided that such disclosure may be made only following reasonable notice to the Disclosing
Party and to the extent reasonably necessary to seek or obtain such Patent Rights or approvals; or 
 (c) if such disclosure is
required by judicial order or applicable Law or to defend or prosecute litigation or arbitration; provided that, prior to such disclosure, to the extent permitted by Law, the Receiving Party promptly notifies the Disclosing Party of such
requirement, cooperates with the Disclosing Party to take whatever action it may deem appropriate to protect the confidentiality of the information and furnishes only that portion of the Disclosing Party’s Confidential Information that the
Receiving Party is legally required to furnish. 

  
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 Section 11.3 Publicity; Terms of this Agreement; Non-Use of Names. 

(a) Except as required by judicial order or applicable Law (in which case, Section 11.3(b) must be complied with) or as explicitly
permitted by this Article XI, neither Party shall make any public announcement concerning this Agreement without the prior written consent of the other Party, which consent shall not be unreasonably withheld or delayed. The Party preparing any such
public announcement shall provide the other Party with a draft thereof at least [**] Business Days prior to the date on which such Party would like to make the public announcement (or, in extraordinary circumstances, such shorter period as required
to comply with applicable Law). Notwithstanding the foregoing, the Parties shall issue a press release, in the form attached as Schedule 11.3, within [**] after the Effective Date. Neither Party shall use the name, trademark, trade name or
logo of the other Party or its employees in any publicity or news release relating to this Agreement or its subject matter, without the prior express written permission of the other Party. For purposes of clarity, either Party may issue a press
release or public announcement or make such other disclosure relating to this Agreement if the contents of such press release, public announcement or disclosure (x) (i) does not consist of financial information and has previously been made
public other than through a breach of this Agreement by the issuing Party or its Affiliates, (ii) is contained in such Party’s financial statements prepared in accordance with Accounting Standards, or (iii) is contained in the
Redacted Version of this Agreement, and (y) is material to the event or purpose for which the new press release or public announcement is made. 
 (b) Notwithstanding the terms of this Article XI: 
 (i) Either Party shall be
permitted to disclose the existence and terms of this Agreement to the extent required, in the reasonable opinion of such Party’s legal counsel, to comply with applicable Laws, including the rules and regulations promulgated by the Securities
and Exchange Commission or any other governmental authority. Notwithstanding the foregoing, before disclosing this Agreement or any of the terms hereof pursuant to this Section 11.3(b), the Parties will coordinate in advance with each other in
connection with the redaction of certain provisions of this Agreement with respect to any filings with the Securities and Exchange Commission, London Stock Exchange, the UK Listing Authority, NYSE, the NASDAQ Stock Market or any other stock exchange
on which securities issued by a Party or a Party’s Affiliate are traded (the “Redacted Version”), and each Party will use commercially reasonable efforts to seek confidential treatment for such terms as may be reasonably
requested by the other Party; provided that the Parties will use commercially reasonable efforts to file redacted versions with any governing bodies which are consistent with the Redacted Version. 

(ii) Either Party may disclose the existence and terms of this Agreement in confidence: 

(A) to (1) its attorneys, professional accountants, and auditors, and (2) bankers or other financial advisors in connection
with an initial public offering, other strategic transaction, or corporate valuation for internal purposes; provided that any such disclosure to such professional accountants, auditors, bankers or other financial advisors is under an agreement to
keep the terms of confidentiality and non-use no less rigorous than the terms contained in this Agreement and to use such information solely for the applicable purpose permitted pursuant to this Section 11.3(b)(ii)(A); 

  
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 (B) to each licensor under an Existing Third Party Agreement; provided that such
disclosure is under the confidentiality and non-use provisions of such agreement; 
 (C) to potential acquirers (and their
respective attorneys and professional advisors), in connection with a potential merger, acquisition or reorganization; provided that (1) the Party making the disclosure has a bona fide offer from such Third Party for such a transaction,
and (2) such disclosure is under an agreement to keep the terms of confidentiality and non-use no less rigorous than the terms contained in this Agreement and to use such information solely for the purpose permitted pursuant to this
Section 11.3(b)(ii)(C); 
 (D) to existing investors, lenders or permitted assignees of such Party (and their respective
attorneys and professional advisors); provided that such disclosure is under an agreement to keep the terms of confidentiality and non-use no less rigorous than the terms contained in this Agreement; and 

(E) to potential investors, lenders or permitted assignees of such Party, or to potential licensees or sublicensees of such Party (and
their respective attorneys and professional advisors); provided that (1) such disclosure shall not be made prior to [**] Business Days prior to the good faith anticipated closing date for the investment, loan, assignment or license, as
applicable, and shall be made only if such Party reasonably concludes that such transaction with such disclosee is likely to be consummated; (2) if the disclosee is a Major Pharmaceutical Company or any of its Affiliates, the disclosure shall
be limited to the Redacted Version plus such additional terms and conditions reasonably requested by the disclosing Party and consented to by the other Party (for purposes of clarity, the disclosing Party shall not be obligated to disclose the
identity of the disclosee in order to request such consent); and (3) such disclosure is under an agreement to keep the terms of confidentiality and non-use no less rigorous than the terms contained in this Agreement. For purposes of this
subsection, the term “Major Pharmaceutical Company” means, at a given time, one of the top [**] pharmaceutical companies based on sales of ethical pharmaceuticals for the prior fiscal year as published by Pharmaceutical Executive at
the following URL or any subsequent URL: http://pharmexec.findpharma.com/pharmexec/data/articlestandard//pharmexec/352009/621548/article.pdf or, in the event that Pharmaceutical Executive no longer publishes such a list, by a comparable publisher.

 (iii) Either Party may issue a press release or make a public disclosure to the extent that such press release or disclosure
describes: 
 (A) clinical or regulatory achievements relating to, in the case of press releases or disclosures by Agios, Agios
Reverted Products, Split Products (to the extent relating to the US Territory) and Buy-In Products for which Agios is the Commercializing Party, and, in the case of press releases or disclosures by Celgene, Celgene Reverted Products, Split Products
(to the extent relating to the ROW Territory) and any other Licensed Products for which Celgene is the Commercializing Party; 

  
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 (B) the exercise by Celgene of the Celgene Program Option for any Program, without the
disclosure of any financial information without the other Party’s prior written consent; 
 (C) Publications approved in
accordance with the provisions of Section 11.4; and 
 (D) receipt of milestone payments (but not the amount of such
payments, except any amount associated with the achievement of any milestone related to a Phase III Study or Regulatory Approval) under Section 9.6, including a brief description of the Development milestone giving rise to such payments;

 provided that the Party issuing such a press release or making such a public disclosure shall not refer to the other Party without the
other Party’s prior written consent; provided further that the Party issuing such a press release or making such a public disclosure shall provide the other Party with a draft thereof at least [**] Business Days prior to the date on
which such issuing Party would like to issue such press release or make the public announcement, and such issuing Party shall consider in good faith any comments or concerns of the other Party with respect to such press release or public disclosure.
In addition to the foregoing, the Parties shall discuss in good faith the public disclosure of the commencement or “top line” results of Clinical Trials of Licensed Products. 

Section 11.4 Publications. The Parties agree that decisions regarding the timing and content of Publications shall be subject
to the oversight and approval by Mutual Consent of the JSC and neither Party nor its Affiliates shall have the right to make Publications pertaining to Agreement Compounds (other than Agios Reverted Compounds) or Targets except as provided herein.
If a Party or its Affiliates desire to make a Publication, such Party must comply with the following procedure: 
 (a) The
publishing Party shall provide the JSC and the non-publishing Party with an advance copy of the proposed Publication, and the JSC, by Mutual Consent, shall then have [**] days prior to submission for any Publication ([**] days in the case of an
abstract or oral presentation) in which to determine whether the Publication meets the Publication Guidelines and may be published and under what conditions, including (i) delaying sufficiently long to permit the timely preparation and filing
of a patent application or (ii) specifying changes the JSC reasonably believes are necessary to preserve any Patent Rights or Know-How belonging (whether through ownership or license, including under this Agreement) in whole or in part to the
non-publishing Party. 
 (b) In addition, if the non-publishing Party informs the publishing Party that such Publication, in the
non-publishing Party’s reasonable judgment, discloses any Confidential Information of the non-publishing Party or could be expected to have a material adverse effect on any Know-How which is Confidential Information of the non-publishing Party,
such Confidential Information or Know-How shall be deleted from the Publication. 

  
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 (c) Each Party shall have the right to present its Publications approved pursuant to this
Section 11.4 at scientific conferences, including at any conferences in any country in the world, subject to any conditions imposed by the JSC in its approval. 
 (d) Notwithstanding the foregoing, the Parties acknowledge that, to the extent that any Publication relates to Agios Intellectual Property that is subject to the Existing Third Party Agreements, the
parties to such Existing Third Party Agreements may have retained the right to publish certain information, and nothing in this Section 11.4 is intended to restrict the exercise of such rights; provided that, to the extent that Agios has
the right to review and comment on any such publications, Agios shall, to the extent permissible under such Existing Third Party Agreements, exercise such rights after consultation with Celgene. 

(e) For purposes of convenience, the JSC may by Mutual Consent delegate its responsibilities under this Section 11.4 to one or more
representatives of Agios and Celgene. 
 Section 11.5 Term. All obligations under this Article XI shall expire [**]
years following termination or expiration of this Agreement. 
 Section 11.6 Return of Confidential Information.

 (a) Upon the expiration or termination of this Agreement, the Receiving Party shall return to the Disclosing Party all
Confidential Information received by the Receiving Party from the Disclosing Party (and all copies and reproductions thereof). In addition, the Receiving Party shall destroy: 
 (i) any notes, reports or other documents prepared by the Receiving Party which contain Confidential Information of the Disclosing Party; and 

(ii) any Confidential Information of the Disclosing Party (and all copies and reproductions thereof) which is in electronic form or
cannot otherwise be returned to the Disclosing Party. 
 (b) Alternatively, upon written request of the Disclosing Party, the
Receiving Party shall destroy all Confidential Information received by the Receiving Party from the Disclosing Party (and all copies and reproductions thereof) and any notes, reports or other documents prepared by the Receiving Party which contain
Confidential Information of the Disclosing Party. Any requested destruction of Confidential Information shall be certified in writing to the Disclosing Party by an authorized officer of the Receiving Party supervising such destruction. 

(c) Nothing in this Section 11.6 shall require the alteration, modification, deletion or destruction of archival tapes or other
electronic back-up media made in the ordinary course of business; provided that the Receiving Party shall continue to be bound by its obligations of confidentiality and other obligations under this Article XI with respect to any
Confidential Information contained in such archival tapes or other electronic back-up media. 

  
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 (d) Notwithstanding the foregoing, 

(i) the Receiving Party’s legal counsel may retain one copy of the Disclosing Party’s Confidential Information solely for the
purpose of determining the Receiving Party’s continuing obligations under this Article XI; and 
 (ii) the Receiving Party
may retain the Disclosing Party’s Confidential Information and its own notes, reports and other documents; 
 (A) to the
extent reasonably required (1) to exercise the rights and licenses of the Receiving Party expressly surviving expiration or termination of this Agreement; or (2) to perform the obligations of the Receiving Party expressly surviving
expiration or termination of this Agreement; or 
 (B) to the extent it is impracticable to do so without incurring
disproportionate cost. 
 Notwithstanding the return or destruction of the Disclosing Party’s Confidential Information, the Receiving Party
shall continue to be bound by its obligations of confidentiality and other obligations under this Article XI. 
 Article XII

 Representations and Warranties 
 Section 12.1 Mutual Representations. Agios and Celgene each represents, warrants and covenants to the other Party, as of the Effective Date, that: 

(a) Authority. It has full corporate right, power and authority to enter into this Agreement and to perform its obligations under
this Agreement. 
 (b) Consents. All necessary consents, approvals and authorizations of all government authorities and
other Persons required to be obtained by it as of the Effective Date in connection with the execution, delivery and performance of this Agreement have been or shall be obtained by the Effective Date. 

(c) No Conflict. Notwithstanding anything to the contrary in this Agreement, the execution and delivery of this Agreement, the
performance of such Party’s obligations in the conduct of the Collaboration and the licenses and sublicenses to be granted pursuant to this Agreement (i) do not and will not conflict with or violate any requirement of applicable Laws
existing as of the Effective Date and (ii) do not and will not conflict with, violate, breach or constitute a default under any contractual obligations of such Party or any of its Affiliates existing as of the Effective Date. 

(d) Enforceability. This Agreement is a legal and valid obligation binding upon it and is enforceable in accordance with its
terms. 
 (e) Employee Obligations. To its knowledge, none of its or its Affiliates’ employees who have been, are or
will be involved in the Collaboration are, as a result of the nature of such Collaboration to be conducted by the Parties, in violation of any covenant in any contract with a Third Party relating to non-disclosure of proprietary information,
non-competition or non-solicitation. 

  
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 Section 12.2 Additional Agios Representations. Agios represents, warrants and
covenants to Celgene, as of the Effective Date, as follows: 
 (a) Agios possesses sufficient rights to enable Agios to grant
all rights and licenses it purports to grant to Celgene with respect to the Agios Intellectual Property under this Agreement. 

(b) Agios has not used, and during the Term will not knowingly use, any Know-How in a Discovery Program or Independent Program conducted
by Agios that is encumbered by any contractual right of or obligation to a Third Party that conflicts or interferes with any of the rights or licenses granted or to be granted to Celgene hereunder. 

(c) The Agios Patent Rights existing as of the Effective Date constitute all of the Patent Rights Controlled by Agios as of such date
that are necessary or useful for the Development, Manufacture or Commercialization of Collaboration Compounds, Licensed Compounds and Licensed Product. 
 (d) Agios has not granted, and during the Term Agios will not grant, any right or license, to any Third Party relating to any of the intellectual property rights it Controls, that conflicts with the
rights or licenses granted or to be granted to Celgene hereunder. 
 (e) There is no pending litigation, and Agios has not
received any written notice of any claims or litigation, seeking to invalidate or otherwise challenge the Agios Patent Rights or Agios’ rights therein. 
 (f) There is no pending litigation, and Agios has not received any written notice of any claims or litigation, that alleges that Agios’ activities with respect to Collaboration Targets have infringed
or misappropriated any intellectual property rights of any Third Party. 
 (g) [**] practice of the Agios Intellectual Property
as contemplated under this Agreement does not (i) infringe any claims of any Patent Rights of any Third Party, or (ii) misappropriate any Know-How of any Third Party. 

(h) None of (i) the Agios Patent Rights owned by Agios or both Controlled by and Prosecuted by Agios and (ii) [**], the Agios
Patent Rights Controlled but not Prosecuted by Agios are subject to any pending re-examination, opposition, interference or litigation proceedings. 
 (i) All of (i) the Agios Patent Rights owned by Agios or both Controlled by and Prosecuted by Agios and (ii) [**], the Agios Patent Rights Controlled but not Prosecuted by Agios have been filed
and diligently Prosecuted in accordance with all applicable Laws in the Territory and have been maintained, with all applicable fees with respect thereto having been paid. 

  
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 (j) True and correct copies of the Existing Third Party Agreements have been provided to
Celgene, and such agreements are in full force and effect and have not been modified or amended. Neither Agios nor, [**], any licensor under the Existing Third Party Agreements is in default with respect to a material obligation under, and none of
such parties has claimed or has grounds upon which to claim that the other party is in default with respect to a material obligation under, the Existing Third Party Agreements. 

(k) [**] Agios Patent Rights Controlled by Agios pursuant to the Existing Third Party Agreements were not and are not subject to any
restrictions or limitations except as set forth in the Existing Third Party Agreements. 
 (l) Agios has not waived or allowed
to lapse any of its rights under any Existing Third Party Agreement with respect to Collaboration Targets, Collaboration Compounds or Licensed Products, and no such rights have lapsed or otherwise expired or been terminated. 

(m) Agios has and, [**] the applicable licensor under each Existing Third Party Agreement has complied with any and all obligations under
[**] to perfect rights to the applicable Patent Rights or Know-How licensed thereunder. 
 (n) Agios has not employed and, to
its knowledge, has not used a contractor or consultant that has employed, any individual or entity (i) debarred by the FDA (or subject to a similar sanction of another applicable Regulatory Authority), (ii) who is the subject of an FDA
debarment investigation or proceeding (or similar proceeding of another applicable Regulatory Authority), or (iii) has been charged with or convicted under United States Law for conduct relating to the development or approval, or otherwise
relating to the regulation of any Licensed Product under the Generic Drug Enforcement Act of 1992, in each case, in the conduct of its activities prior to the Effective Date. 
 Section 12.3 Additional Celgene Representations. Celgene represents, warrants and covenants to Agios, as of the Effective Date, that, [**] based on Celgene’s understanding of the
mechanism of action of any therapeutic modality (including any small molecule or biologic) in Celgene’s current programs, Celgene has [**] directed to the Development, Manufacture or Commercialization of [**] to a Collaboration Target on the
Target List as of the Effective Date, which program is Celgene’s program directed to [**]. 
 Section 12.4 Employee
Obligations. Agios and Celgene each covenants to the other Party that all of its and its Affiliates’ employees, officers, consultants and advisors who have been, are or will be involved in the Collaboration have executed (or, prior to
becoming involved in the Collaboration, will have executed agreements) or have existing obligations under Law requiring assignment to such Party of all intellectual property made during the course of and as the result of their association with such
Party, and obligating the individual to maintain as confidential such Party’s Confidential Information, to the extent required to support such Party’s obligations under this Agreement. 

  
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 Section 12.5 No Warranties. EXCEPT AS OTHERWISE EXPRESSLY SET FORTH HEREIN, THE
PARTIES MAKE NO REPRESENTATIONS AND EXTEND NO WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY REPRESENTATIONS OR WARRANTIES AS TO MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT. 

Article XIII 
 Indemnification 
 Section 13.1 By Celgene. 

(a) Celgene agrees, at Celgene’s cost and expense, to defend, indemnify and hold harmless Agios and its Affiliates and their
respective directors, officers, employees and agents (the “Agios Indemnified Parties”) from and against any losses, costs, damages, fees or expenses arising out of any Third Party claim relating to: 

(i) any breach by Celgene of any of its representations, warranties or obligations pursuant to this Agreement; 

(ii) the gross negligence or willful misconduct of Celgene; 
 (iii) the Development, Manufacture, Commercialization, use, sale or other disposition by Celgene, its Affiliates, licensees or sublicensees of any Collaboration Compound, Licensed Compound, Licensed
Product, Celgene Reverted Compound or Celgene Reverted Product; and 
 (iv) the conduct by Celgene, its Affiliates or
sublicensees of any Independent Program. 
 (b) In the event of any such claim against the Agios Indemnified Parties by any
Third Party, Agios shall promptly, and in any event within [**] Business Days, notify Celgene in writing of the claim. Celgene shall have the right, exercisable by notice to Agios within [**] Business Days after receipt of notice from Agios of the
claim, to assume direction and control of the defense, litigation, settlement, appeal or other disposition of the claim (including the right to settle the claim solely for monetary consideration) with counsel selected by Celgene and reasonably
acceptable to Agios; provided that the failure to provide timely notice of a claim by a Third Party shall not limit an Agios Indemnified Party’s right for indemnification hereunder except to the extent such failure results in actual
prejudice to Celgene. The Agios Indemnified Parties shall cooperate with Celgene and may, at their option and expense, be separately represented in any such action or proceeding. Celgene shall not be liable for any litigation costs or expenses
incurred by the Agios Indemnified Parties without Celgene’s prior written authorization. In addition, Celgene shall not be responsible for the indemnification or defense of any Agios Indemnified Party to the extent arising from any negligent or
intentional acts by any Agios Indemnified Party or the breach by Agios of any representation, obligation or warranty under this Agreement, or any claims compromised or settled without its prior written consent. 

  
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 Section 13.2 By Agios. 

(a) Agios agrees, at Agios’ cost and expense, to defend, indemnify and hold harmless Celgene and its Affiliates and their respective
directors, officers, employees and agents (the “Celgene Indemnified Parties”) from and against any losses, costs, damages, fees or expenses arising out of any Third Party claim relating to: 

(i) any breach by Agios of any of its representations, warranties or obligations pursuant to this Agreement; 

(ii) the gross negligence or willful misconduct of Agios; 
 (iii) the Development, Manufacture, Commercialization, use, sale or other disposition by Agios, its Affiliates, licensees (other than Celgene) or sublicensees of any Collaboration Compound, Licensed
Compound, Licensed Product, Agios Reverted Compound or Agios Reverted Product; and 
 (iv) the conduct by Agios, its Affiliates
or sublicensees of any Independent Program. 
 (b) In the event of any such claim against the Celgene Indemnified Parties by any
Third Party, Celgene shall promptly, and in any event within [**] Business Days, notify Agios in writing of the claim. Agios shall have the right, exercisable by notice to Celgene within [**] Business Days after receipt of notice from Celgene of the
claim, to assume direction and control of the defense, litigation, settlement, appeal or other disposition of the claim (including the right to settle the claim solely for monetary consideration) with counsel selected by Agios and reasonably
acceptable to Celgene; provided that the failure to provide timely notice of a claim by a Third Party shall not limit a Celgene Indemnified Party’s right for indemnification hereunder except to the extent such failure results in actual
prejudice to Agios. The Celgene Indemnified Parties shall cooperate with Agios and may, at their option and expense, be separately represented in any such action or proceeding. Agios shall not be liable for any litigation costs or expenses incurred
by the Celgene Indemnified Parties without Agios’ prior written authorization. In addition, Agios shall not be responsible for the indemnification or defense of any Celgene Indemnified Party to the extent arising from any negligent or
intentional acts by any Celgene Indemnified Party or the breach by Celgene of any representation, obligation or warranty under this Agreement, or any claims compromised or settled without its prior written consent. 

Section 13.3 Of [**]. 
 (a) Celgene shall indemnify, defend and hold harmless [**] and its Affiliates and their respective trustees, directors, officers, medical and professional staff, employees, and agents and their respective
successors, heirs and assigns (the “[**] Indemnitees”), against any liability, damage, loss or expense (including reasonable attorneys’ fees and expenses of litigation) incurred by or imposed upon the [**] Indemnitees or any
one of them in connection with any claims, suits, actions, demands or judgments arising out of any theory of liability, including any theory of product liability (including actions in the form of contract, tort, warranty, or strict liability)
concerning any product, process or service made, used or sold pursuant to any right or license to the extent sublicensed to Celgene under the [**] Agreement. 

  
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 (b) Celgene agrees, at its own expense, to provide attorneys reasonably acceptable to [**]
to defend against any actions brought or filed against any [**] Indemnitees with respect to the subject of indemnity contained herein, whether or not such actions are rightfully brought; provided, however, that any [**]
Indemnitee shall have the right to retain its own counsel, at the expense of Celgene, if representation of such [**] Indemnitee by counsel retained by Celgene would be inappropriate because of actual or potential conflicts of interest of such [**]
Indemnitees and any other party represented by such counsel. Celgene agrees to keep [**] informed of the progress in the defense and disposition of such claim and to consult [**] prior to any proposed settlement. 

(c) Notwithstanding Celgene’s indemnification obligations for the [**] Indemnitees pursuant to Sections 13.3(a) and 13.3(b) above,
which indemnification the Parties acknowledge is required pursuant to Section 8.1 of the [**] Agreement, as between Agios and Celgene, the obligation to indemnify the [**] Indemnitees will be allocated between Agios and Celgene in accordance
with Sections 13.1 and 13.2. 
 Section 13.4 Joint Defendants. If a product liability suit is brought against either
Party relating in any way to a Collaboration Compound, Licensed Product or Licensed Compound, and it is not clear from the allegations in the complaint or the known facts surrounding the allegations in the complaint as to whether a claim exists for
which there is a right of indemnification pursuant to Section 13.1 or 13.2 above, then Celgene shall be responsible for controlling the defense of such suit in the first instance. During such period that Celgene is controlling such defense,
with regard to the costs of such defense, including attorneys’ fees, Celgene and Agios each shall be responsible for 50% of all such costs. No settlement, consent judgment or other voluntary final disposition of any such suit may be entered
into without the prior written consent of Agios, which consent shall not be unreasonably withheld or delayed. If, at any time in the course of such suit, it becomes apparent from discovery or otherwise that a claim exists for which indemnification
may be obtained in accordance with Section 13.1 or 13.2, then the indemnification provisions of either Section 13.1 or 13.2, whichever is applicable, shall become applicable and govern further proceedings in the suit, and the Party
determined to be responsible shall reimburse the other Party for all prior costs incurred by such other Party for which indemnification should have been obtained in accordance with Section 13.1 or 13.2. 

Section 13.5 Limitation of Liability. EXCEPT WITH RESPECT TO A BREACH OF SECTION 8.8 OR ARTICLE XI, OR A PARTY’S
LIABILITY PURSUANT TO SECTION 13.1, 13.2, OR 13.3, NEITHER PARTY SHALL BE LIABLE FOR SPECIAL, CONSEQUENTIAL, EXEMPLARY, PUNITIVE, MULTIPLE OR OTHER INDIRECT OR REMOTE DAMAGES, OR FOR LOSS OF PROFITS, LOSS OF DATA OR LOSS OF USE DAMAGES ARISING IN
ANY WAY OUT OF THIS AGREEMENT OR THE EXERCISE OF ITS RIGHTS HEREUNDER, WHETHER BASED UPON WARRANTY, CONTRACT, TORT, STRICT LIABILITY OR OTHERWISE, EVEN IF SUCH PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR LOSS. 

Section 13.6 Insurance. Agios, beginning on [**], and Celgene, beginning upon [**], and, both Parties, thereafter during the
Term, shall maintain commercial general liability insurance (including product liability insurance) from a recognized, creditworthy insurance company, with coverage limits of at least $[**] per claim and annual aggregate. Celgene may

  
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elect to self-insure all or parts of the limits described above. Within [**] days following written request from the other Party, each Party shall furnish to the other Party a certificate of
insurance evidencing such coverage. If such coverage is modified or cancelled, the insured Party shall notify the other Party and promptly provide such other Party with a new certificate of insurance evidencing that such insured Party’s
coverage meets the requirements of this Section 13.6. 
 Article XIV 

Term and Termination 
 Section 14.1 Term. 
 (a) The term of this Agreement (the
“Term”) shall commence on the Effective Date and shall continue, unless earlier terminated pursuant to Section 14.2, until the following: 
 (i) expiration of this Agreement in its entirety, which shall occur following the First Commercial Sale of any Royalty-Bearing Product on the expiration of the last-to-expire of all Royalty Terms with
respect to all Royalty-Bearing Products; 
 (ii) expiration of this Agreement on a Royalty-Bearing Product-by-Royalty-Bearing
Product and country-by-country basis, which shall occur following the First Commercial Sale of any Royalty-Bearing Product in any country on the expiration of the Royalty Term with respect to such Royalty-Bearing Product in such country; or

 (iii) expiration of this Agreement in its entirety, which shall occur upon the expiration of the Option Term (or, if
applicable, with respect to any Extended Program, following any Post-Option Extension) if Celgene fails to exercise its Celgene Program Option with respect to at least one nominated Development Candidate, does not select any Picks pursuant to
Section 3.7 (or, as applicable, Section 3.3(b)(iii), Section 3.6(c) or Section 15.5), and there are no existing Independent Programs or Celgene Reverted Programs. 

(b) Upon the expiration of the Term in accordance with Section 14.1(a)(i) or (ii) above with respect to a Royalty-Bearing
Product in a country, all licenses granted by one Party to the other Party under this Agreement for such Royalty-Bearing Product in such country shall become fully paid-up, perpetual, sublicensable, irrevocable, royalty-free licenses. 

Section 14.2 Termination. 
 (a) Termination for Convenience. Celgene shall have the right to terminate this Agreement, in its entirety or on a Program-by-Program basis, for convenience upon ninety (90) days’ prior
written notice to Agios; provided that Celgene shall not have the right to terminate this Agreement or any Program until six (6) months following the Effective Date; provided further that, if Celgene
terminates this Agreement under this Section 14.2(a) with respect to any Independent Program conducted by Agios, such Independent Program shall be deemed an Agios Reverted Program and the rights and obligations under Section 3.12
associated with an Agios Reverted Program shall apply. 

  
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 (b) Termination for Material Breach or Insolvency. 

(i) If either Party (the “Non-Breaching Party”) believes that the other Party (the “Breaching Party”)
is in material breach of this Agreement, then the Non-Breaching Party may deliver written notice of such breach to the Breaching Party. If the Breaching Party fails to cure such breach, or take such steps as would be considered reasonable to
effectively cure such breach, within the [**] day period after delivery of such notice, the Non-Breaching Party may terminate this Agreement upon written notice to the Breaching Party, which termination shall apply (i) solely with respect to a
Program if such breach is related solely to such Program, or (ii) either on a Program-by-Program basis or to this Agreement in its entirety at the discretion of the Non-Breaching Party if such breach is not related solely to a Program.
Notwithstanding the foregoing, if such breach is capable of being cured, but is not reasonably capable of being cured within the [**]-day cure period, if the Breaching Party (A) proposes within such [**]-day period a written plan to cure such
breach within a defined time frame extending for a period not to exceed an additional [**] days, and (B) makes good faith efforts to cure such default and to implement such written cure plan, then the Non-Breaching Party may not terminate this
Agreement until the earlier of such time as the Breaching Party is no longer diligently pursuing such cure in accordance with such plan or the end of such additional period. 
 (ii) To the extent permitted by Law, this Agreement may be terminated by either Party upon the filing or institution of bankruptcy, reorganization, liquidation or receivership proceedings, or upon an
assignment of a substantial portion of the assets for the benefit of creditors by the other Party; provided, however, that, in the event of any involuntary bankruptcy or receivership proceeding such right to terminate shall only
become effective if the Party consents to the involuntary bankruptcy or receivership or such proceeding is not dismissed within ninety (90) days after the filing thereof. 
 Section 14.3 Effects Of Termination. 
 (a) Effects of Celgene
Termination for Convenience or Agios Termination for Celgene Breach. Upon termination of this Agreement by Celgene under Section 14.2(a) or a termination of this Agreement by Agios under Section 14.2(b), in either case, in whole or
with respect to a Terminated Program, the following shall apply: 
 (i) with respect to licenses, 

(A) if the Terminated Program(s) is [**] shall terminate, and [**] shall stay in place, subject to [**] continuing to pay royalties to
[**] pursuant to Section 9.7(b)(ii) [**], which royalties shall be reduced by [**] percent ([**]%) of the otherwise applicable royalty; 
 (B) if the Terminated Program(s) is [**] shall stay in place, subject to [**] continuing to pay royalties to [**] pursuant to Section 9.7(c), which royalties shall be reduced by [**] percent ([**]%)
of the otherwise applicable royalty; 
 (C) if this Agreement is terminated [**] or by [**] shall terminate; and 

  
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 (D) with respect to any other Terminated Program(s) (other than as set forth in Sections
14.3(a)(i)(A), (B) or (C) above, and other than for [**] with respect to the Terminated Program(s) shall terminate; 

(ii) each Party shall be released from its Development, Manufacture and Commercialization obligations with respect to such Terminated
Program(s) (except as set forth in Section 14.3(a)(iv)(E) and (F) below with respect to [**] transfer of Manufacturing to [**] hereunder); 
 (iii) within [**] days after such termination, with respect to Terminated Program(s) that [**], each Party shall provide the other with a report of the costs incurred by such Party that are subject to the
Parties’ cost-sharing obligations through the effective date of termination for the purpose of calculating a final reconciliation of shared costs with respect to such Terminated Program(s) in accordance with Section 9.4(d);
provided, however, that, with respect to Terminated Program(s) that [**] shall remain responsible for its applicable share of the Developments Costs of any Clinical Trials or other Development activities committed by [**] with
respect to such Terminated Program(s) prior to the effective date of termination to the extent such Development Costs are within an approved Development Budget under an approved Development Plan in place prior to termination; 

(iv) with respect to [**] or with respect to [**], the following shall apply, 

(A) within [**] days after such termination, [**] shall provide to [**] a fair and accurate summary report of the status of Development
and Commercialization activities conducted by [**] with respect to the Terminated Program(s); 
 (B) [**] hereby grants to
[**], exercisable from and after such termination by [**], a non-exclusive, worldwide, perpetual, royalty-free, fully-paid license, with the right to grant sublicenses, under [**] only to the extent that such [**] is actually used by [**] or its
Affiliates in connection with the Terminated Program(s) prior to the date of such termination; provided that the foregoing license under this Section 14.3(a)(iv)(B) shall be exclusive with respect to the applicable Terminated Program
only to the extent of claims within the [**] Covering a composition of matter on the Terminated Product in the Terminated Program; provided further that [**] shall be solely responsible for any payments owed by [**] to any Third Party
licensors of [**] and shall be responsible for complying with the terms of any license agreements with such Third Party licensors, in either case, directly related to [**] exercise of such license; and, if requested by [**] shall negotiate in good
faith with [**] with respect to [**] granting to [**] a royalty-bearing license under [**] and its Affiliates’ interest in the [**] only to the extent that such [**] is (x) [**] by [**] or its Affiliates in connection with the Terminated
Program(s) prior to the date of such termination and (y) [**] to Develop, Manufacture and/or Commercialize Terminated Products in the Territory; 
 (C) [**] shall promptly transfer and assign to [**] all of [**] and its Affiliates’ rights, title and interests in and to the product trademark(s) (but not any [**] house marks) owned by [**] and
solely used for Terminated Products in the Territory; 

  
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 (D) [**] shall as soon as reasonably practicable transfer and assign to [**] all Regulatory
Approvals, the data comprising the Global Safety Database, and other Regulatory Documentation Controlled by [**] which are necessary for the Development, Manufacture and/or Commercialization of Terminated Products in the Territory; provided
that [**] may retain a single copy of such items for its records; provided further that, if such approvals, data, or documentation are necessary or useful for the Development, Manufacture and/or Commercialization of a non-Terminated
Product, in place of transferring or assigning the foregoing, [**] shall [**] Agios a Right of Reference or Use with respect to such approvals, data, or documentation with respect to such Terminated Products in the Territory; 

(E) [**] shall have the option, exercisable within [**] days following the effective date of such termination of this Agreement, to
obtain [**] inventory of Terminated Products at a price equal to [**] percent ([**]%) of [**] Manufacturing Costs for such inventory of Terminated Products; provided that, if [**], its Affiliates or sublicensees have outstanding orders, at
[**] election, either [**] shall fulfill such orders or, notwithstanding [**] option to purchase inventory, [**] may retain sufficient inventory to fulfill such orders. [**] may exercise such option by written notice to [**] during such [**]-day
period; provided that, in the event [**] exercises such right to purchase such inventory, [**] shall grant, and hereby does grant, a royalty-free right and license to any trademarks, names and logos of [**] contained therein for a period of
[**] months solely to permit the orderly sale of such inventory, subject to [**] meeting reasonable quality control standards imposed by [**] on the use of such trademarks, names and logos, which shall be consistent with the standards used by [**]
prior to such termination; 
 (F) to the extent that [**] is responsible for Manufacturing any Terminated Product(s)
immediately prior to such termination, at [**] written request: 
 (1) in exchange for a payment equal to [**] percent ([**]%)
of [**] Manufacturing Costs, [**] shall use Commercially Reasonable Efforts to supply [**] and its Affiliates with comparable quantities of such Terminated Product(s) in the form, formulation and presentation as were being Developed or
Commercialized immediately prior to termination until the earlier of [**] months after the effective date of the termination and establishment by [**] of an alternative supply for such Terminated Product(s); 

(2) in the event [**] was utilizing a Third Party manufacturer to Manufacture any Terminated Product(s), to the extent permitted by the
terms of such contract, [**] shall promptly assign to [**] the manufacturing agreements with such Third Party with respect to such Terminated Product(s); and 
 (3) [**] shall transfer, or have transferred, to [**] or its designee, pursuant to a technology transfer plan to be mutually agreed by the Parties, all Manufacturing Technology Controlled by [**] within
[**] that is both [**] to Manufacture such Terminated Product(s) as Manufactured by or on behalf of [**] and its Affiliates prior to termination and [**] in support of Development or Commercialization of such Terminated Product(s) (or is in the
process of being incorporated), and [**] shall provide reasonable assistance in connection with the transfer of such Manufacturing Technology to [**] or its designee, all of which shall be transferred or provided at [**] Costs; 

  
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 (v) notwithstanding anything to the contrary in Section 8.8, each Party shall have the
right to pursue the Development, Manufacture and Commercialization of products directed to the same Target(s) as the Terminated Product(s), regardless of whether the applicable termination occurred during or after [**]; and 

(vi) the provisions of ARTICLE X (other than Section 10.1) shall be terminated with respect to such Terminated Program(s), and [**]
shall, if applicable, provide reasonable assistance to [**] and cooperation in connection with the transition of Prosecution and enforcement responsibilities to [**] with respect to [**] and [**] solely related to such Terminated Program(s),
including execution of such documents as may be necessary to effect such transition. 
 (b) Effects of Celgene Termination
for Agios Breach. Upon any termination of this Agreement by Celgene in whole or with respect to a Terminated Program under Section 14.2(b): 
 (i) [**] shall continue in full force in perpetuity; 
 (ii) all future royalties
payable by Celgene under this Agreement with respect to such Terminated Program(s) shall be reduced by [**] percent ([**]%) of the otherwise applicable royalty, and all future milestones payable by Celgene under Article IX with respect to such
Terminated Program(s) shall be reduced by [**] percent ([**]%) of the otherwise applicable payment amounts; provided that, if the termination of this Agreement or with respect to a Terminated Program is as a result of Agios’ breach of
Section 8.8, all future milestones payable by Celgene under Article IX shall terminate; 
 (iii) if such termination [**],
the following will apply: 
 (A) [**] shall apply; 
 (B) [**] shall continue under their terms, and [**] shall have the right immediately on such termination to [**]; 
 (C) if [**], then (1) [**] shall become effective and shall continue in full force in perpetuity; (2) all future royalties payable by Celgene under this Agreement with respect to such a Program
shall be reduced by [**] percent ([**]%) of the otherwise applicable royalty; and (3) all future milestone payments payable by Celgene under this Agreement with respect to each such Program shall be reduced by [**] percent ([**]%) of the
otherwise applicable payment amounts; provided that, if the termination of this Agreement or with respect to a Terminated Program is as a result of Agios’ breach of Section 8.8, all future milestones payable by Celgene shall
terminate; 
 (iv) [**] with respect to the Terminated Program(s) shall terminate; provided that, if this
Agreement is terminated [**], then [**] shall be deemed to include [**] and, therefore, [**] shall also terminate; 
 (v) if
the Terminated Program(s) is [**], [**], which royalties shall be reduced by [**] percent ([**]%) of the otherwise applicable royalty; 

  
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 (vi) each Party shall be released from its Development, Manufacture and Commercialization
obligations with respect to such Terminated Program(s) (except as set forth in clause (viii) below with respect to [**] transfer of Manufacturing to [**] hereunder); 
 (vii) with respect to Terminated Program(s) that [**], each Party shall provide the other with a report of the costs incurred by such Party that are subject to the Parties’ cost-sharing obligations
through the effective date of termination for the purpose of calculating a final reconciliation of shared costs with respect to such Terminated Program(s) in accordance with Section 9.4(d); provided, however, that, with
respect to Terminated Program(s) that [**] shall remain responsible for its applicable share of the Developments Costs of any Clinical Trials or other Development activities committed by [**] with respect to such Terminated Program(s) prior to the
effective date of termination to the extent such Development Costs are within an approved Development Budget under an approved Development Plan in place prior to termination; and 

(viii) with respect to a Terminated Program(s) that [**], the following shall apply [**]: 

(A) within [**] days after such termination, [**] shall provide to Celgene a fair and accurate summary report of the status of
Development and Commercialization activities conducted by [**] with respect to the Terminated Program(s); 
 (B) [**] shall
continue in full force in perpetuity and [**]; provided that [**] shall be solely responsible for any payments owed by [**] to any [**] or [**] and shall be responsible for complying with the terms of any license agreements with such
[**], in either case, directly related to [**] of such license; and 
 (C) the provisions of Section 14.3(a)(iv)(C), (D),
(E), and (F), shall apply with respect to the Terminated Program(s) [**], in each case, substituting “[**]” for “[**]” and vice versa with respect to all obligations and definitions, and otherwise mutatis mutandis.

 (ix) notwithstanding anything to the contrary in Section 8.8, [**] shall have the right to pursue the Development,
Manufacture and Commercialization of products directed to the same Target(s) as the Terminated Product(s), regardless of whether the applicable termination occurred during or after [**]; and 

(x) the provisions of ARTICLE X (other than Section 10.1) shall be terminated with respect to such Terminated Program(s) and [**]
shall, if applicable, provide reasonable assistance to [**] and cooperation in connection with the transition of Prosecution and enforcement responsibilities to [**] with respect to [**] and [**] solely related to such Terminated Program(s),
including execution of such documents as may be necessary to effect such transition. 
 (c) Sell-Down. Unless Agios
exercises its option under Section [**], if Celgene, its Affiliates or sublicensees at termination of this Agreement possess Licensed Product, have started the manufacture thereof or have accepted orders therefor, Celgene, its Affiliates or
sublicensees shall have the right, for up to [**] following the date of termination, to 

  
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sell their inventories thereof, complete the manufacture thereof and Commercialize such fully-manufactured Licensed Product, in order to fulfill such accepted orders or distribute such
fully-manufactured Licensed Product, subject to the obligation of Celgene to pay Agios any and all payments as provided in this Agreement. 
 (d) Survival. Upon any termination or expiration of this Agreement, unless otherwise specified in this Agreement and except for any rights or obligations that have accrued prior to the effective
date of termination or expiration, all rights and obligations of each Party under this Agreement shall terminate in whole or with respect to Terminated Programs, as the case may be; provided, however, that Sections 3.12,
3.14(b), 8.9, 8.10, 8.11, 9.7(f)(iii), 9.9, 9.10, 10.1, 12.5 and 14.1(b), this Section 14.3 and Articles IX (to the extent any amounts are due but unpaid), XI, XIII and XV, as well as any other provision which by its terms or by the context
thereof is intended to survive, shall survive any such termination or expiration of this Agreement. 
 (e) Equitable
Relief. Termination of this Agreement shall be in addition to, and shall not prejudice, the Parties’ remedies at law or in equity, including the Parties’ ability to receive legal damages and/or equitable relief with respect to any
breach of this Agreement, regardless of whether or not such breach was the reason for the termination. 
 (f) Accrued
Liabilities. Except as otherwise specifically provided herein, termination of this Agreement shall not relieve the Parties of any liability or obligation which accrued hereunder prior to the effective date of such termination, nor preclude
either Party from pursuing all rights and remedies it may have hereunder or at law or in equity with respect to any breach of this Agreement nor prejudice either Party’s right to obtain performance of any obligation. In addition, termination of
this Agreement shall not terminate provisions which provide by their respective terms for obligations or undertakings following the expiration of the term of this Agreement. 
 Article XV 
 Miscellaneous 

Section 15.1 Dispute Resolution. Except for any disagreements that are within the authority of any Committee as provided in
Article II (which disagreements shall be resolved in accordance with Section 2.8 or Section 2.9, as applicable), the Parties agree that any disputes arising with respect to the interpretation, enforcement, termination or invalidity of this
Agreement (each, a “Dispute”) shall first be presented to the Parties’ respective Executive Officers for resolution. If the Parties are unable to resolve a given dispute pursuant to this Section 15.1 after in-person
discussions between the Executive Officers within [**] Business Days after referring such dispute to the Executive Officers, either Party may, at its sole discretion, seek resolution of such matter in accordance with Section 15.2. 

Section 15.2 Submission to Court for Resolution. Subject to Section 15.1, the Parties hereby irrevocably and
unconditionally consent to the exclusive jurisdiction of the courts located in the Southern District of New York for any action, suit or proceeding (other than appeals therefrom) arising out of or relating to this Agreement, and agree not to
commence any action, suit or proceeding (other than appeals therefrom) related thereto except in such courts. The Parties further hereby irrevocably and unconditionally waive any objection to the laying of venue

  
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of any action, suit or proceeding (other than appeals therefrom) arising out of or relating to this Agreement in the courts of New York, and hereby further irrevocably and unconditionally waive
and agree not to plead or claim in any such court that any such action, suit or proceeding brought in any such court has been brought in an inconvenient forum. Each Party further agrees that service of any process, summons, notice or document by
registered mail to its address set forth in Section 15.7 shall be effective service of process for any action, suit or proceeding brought against it under this Agreement in any such court. 

Section 15.3 Governing Law. This Agreement and all questions regarding its validity or interpretation, or the performance or
breach of this Agreement, shall be governed by and construed and enforced in accordance with the laws of the State of New York, without reference to conflicts of laws principles. 

Section 15.4 Assignment. 
 (a) Neither Party may assign this Agreement, in whole or in part, without the consent of the other Party, except that either Party may assign this Agreement, in whole or in part, without the consent of
the other Party, (i) to any Affiliate of such Party, or (ii) to its successor in interest, whether by way of merger, acquisition, sale of all or substantially all of its business or assets to which this Agreement pertains, or otherwise;
provided that, except pursuant to clause (i) or clause (ii), Agios shall not have the right under this sentence to assign individual Discovery Programs during the Discovery Term, and neither Party shall have the right to assign
individual Independent Programs conducted by such Party unless and until the Buy-In Party’s Buy-In Right with respect to such Independent Program has expired; provided further that the assigning Party provides the other
Party with written notice of such assignment (which notice must be at least [**] Business Days in advance of any such assignment pursuant to clause (ii)) and such assignee agrees in writing to be bound by the terms and conditions of this Agreement.
The terms of this Agreement shall be binding upon and shall inure to the benefit of the successors, heirs, administrators and permitted assigns of the Parties. Any purported assignment in violation of this Section 15.4 shall be null and void.

 (b) Each Party agrees that in the event that a Party (the “Acquired Party”) is acquired (whether by way of
merger, acquisition, sale of all or substantially all of its business or assets to which this Agreement pertains, or otherwise) (an “Acquisition”) by a Third Party (the “Acquirer”), (i) the non-Acquired Party
shall not obtain any rights or access under this Agreement to any Know-How or Patent Rights Controlled by such Acquirer which were not already within Agios Intellectual Property (if the Acquired Party is Agios) or Celgene Intellectual Property (if
the Acquired Party is Celgene) immediately prior to the consummation of such Acquisition; and (ii) the provisions of Section 8.8 shall not apply to any activity otherwise prohibited therein if a Party’s involvement in such prohibited
activity results from the Acquirer’s activities but only if (A) such Acquirer, prior to such acquisition or merger, was already engaged in such prohibited activity (the “Third Party Activity”), and (B) no Celgene
Intellectual Property, Agios Intellectual Property, or Collaboration Intellectual Property is used in connection with such Third Party Activity. 

  
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 (c) Each Party agrees that in the event that a Party acquires (whether by way of merger,
acquisition, sale of all or substantially all of its business or assets to which this Agreement pertains, or otherwise) a Third Party (the “Acquired Third Party”), the provisions of Section 8.8 shall not apply to any activity
otherwise prohibited therein if a Party’s involvement in such prohibited activity results from such acquisition, but only if (i) such Acquired Third Party, prior to such acquisition, was already engaged in such prohibited activity (the
“Acquired Party Activity”), and (ii) the Party acquiring such Acquired Third Party shall, within [**] days after the date of the consummation of such acquisition, notify the other Party of such acquisition and comply with the
other provisions of this Section 15.4(c). Following consummation of such an acquisition, the acquiring Party shall, at its option, either (A) use good faith efforts to identify a Third Party purchaser to whom such Party will divest its
interest in the Acquired Party Activity and to enter into a definitive agreement with such Third Party for such divestiture as soon as reasonably practicable under the circumstances, but such divestiture must be completed no later than [**] months
after the closing of such Party’s acquisition of the Acquired Party Activity, or (B) promptly discontinue such Acquired Party Activity; provided that notwithstanding which option is chosen, such divesture or discontinuation
must be accomplished no later than [**] months after the closing of such Party’s acquisition of the Acquired Party Activity. During the time period following the consummation of an acquisition covered by this Section 15.4(c) through the
divestiture or discontinuation of the Acquired Party Activity, the acquiring Party shall not use any Celgene Intellectual Property, Agios Intellectual Property, or Collaboration Intellectual Property in connection with such Acquired Party
Activities. So long as the acquiring Party divests of, or discontinues, the Acquired Party Activity in accordance with this Section 15.4(c), such acquisition shall not be deemed a violation of Section 8.8. 

Section 15.5 Certain Matters Relating to Change of Control. In the event that either Party is subject to a Change of Control,
such Party shall notify the other Party at least [**]Business Days prior to the consummation of such Change of Control (or such lesser period of time as is practicable under the circumstances), and shall thereafter provide written notice to the
other Party promptly following consummation of such Change of Control. 
 (a) Upon consummation of such Change of Control of
Agios, the following shall occur: 
 (i) At Celgene’s written election within [**] days following consummation of such
Change of Control of Agios (“Celgene Election Period”), the Option Term shall be deemed to have expired and the process for identifying Validated Programs pursuant to Section 3.7 shall apply. If Celgene does not elect to
exercise such right and the Option Term stays in effect, then, until the expiration of the Option Term (or, if applicable, any Post-Option Extension), Agios shall maintain its corporate form as a separate entity from its acquirer. 

(ii) The provisions of this Section 15.5(a)(ii) shall apply if the Change of Control is consummated on or prior to [**] months
following the Effective Date and if Celgene elects to have the Option Term expire as a result of the Change of Control. Notwithstanding Section 3.7 or 9.3(b), all the Validated Programs shall be deemed Picks of Celgene, and Celgene shall not
owe to Agios any Validated Program Discovery Costs. Furthermore, with respect to such Picked Validated Programs, all royalty obligations under Section 9.7 shall be reduced by [**] percent ([**]%), and all milestones pursuant to Section 9.6
shall terminate. In addition, the Discovery Programs directed at [**] (unless they have become 

  
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Licensed Programs) shall be included within Celgene’s Picks whether they are Validated Programs or not. Agios shall transfer to Celgene all information and materials concerning such Programs
in the manner set forth in Section 3.15(c). 
 (iii) The provisions of this Section 15.5(a)(iii) shall apply if the
Change of Control is consummated more than [**] months after the Effective Date but during the Option Term and if Celgene elects to have the Option Term expire as a result of the Change of Control. Notwithstanding Section 3.7, the Parties shall
alternate turns selecting Validated Programs, with [**] being entitled to the [**] and [**] being entitled to the [**], and then repeating such picking order until all Validated Programs have been selected. Notwithstanding Section 9.3(b),
Celgene shall not owe to Agios any Validated Program Discovery Costs. Furthermore, with respect to such Picked Validated Programs, all milestones pursuant to Section 9.6, other than the milestones pursuant to Sections 9.6(a)(3) and 9.6(a)(4),
shall terminate, but royalty obligations under Section 9.7 shall not be changed. In addition, the Discovery Programs directed at [**] (unless they have become Licensed Programs) shall be included within the Parties’ Picks whether they are
Validated Programs or not. Agios shall transfer to Celgene all information and materials concerning such Programs in the manner set forth in Section 3.15(c). 
 (iv) If Celgene elects to have the Option Term expire as a result of the Change of Control, with respect to all Discovery Programs that have reached the DC Selection Stage, notwithstanding anything in
Section 3.6(b) to the contrary, at Celgene’s election, Celgene may either continue the process for exercise of the Celgene Program Option pursuant to Section 3.6(b) with respect to all such Discovery Programs, or Celgene may exercise
the Celgene Program Option with respect to all such Discovery Programs within the Celgene Election Period; provided that, in each case, Agios shall continue to have a right to retain US Territory rights with respect to one [**]
Licensed Programs in accordance with Section 3.10; provided further that, if Celgene elects to exercise the Celgene Program Option early pursuant to this Section 15.5(a)(iv): 

(A) within [**] days following such election by Celgene, Agios will identify the Discovery Programs that are between DC Selection Stage
and IND Acceptance as of the consummation of the Change of Control, in order based on the anticipated date of filing of an IND for such Discovery Program (as contemplated under the applicable Discovery Plans), and, in accordance with
Section 3.10, Agios will designate the Discovery Program(s), if applicable, with respect to which Agios elects to retain its US Territory rights (including the right to make an Agios Deferral); 

(B) the terms of Sections 15.5(a)(v)(A), (B), (C), (D) and (F) below shall apply (to the extent applicable to any
Co-Commercialized Program or Split Program following such early exercise by Celgene of the Celgene Program Option pursuant to this Section 15.5(a)(iv)); and 
 (C) Celgene shall not be required to pay Agios the IND Amount with respect to such Discovery Program. 

  
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 (v) If Celgene elects to have the Option Term expire as a result of the Change of Control,
then, at Celgene’s written election during the Celgene Election Period, with respect to Programs that have already become Licensed Programs prior to the consummation of such Change of Control: 

(A) Celgene shall be entitled to assume all Development, Manufacturing, and Commercialization responsibilities with respect to
Co-Commercialized Products; 
 (B) Agios’ right to participate in the Commercialization of Co-Commercialized Products, as
described in Section 6.3, shall cease; 
 (C) at Celgene’s election, all Committees overseeing any Buy-In Program
with respect to which Celgene is the Commercializing Party or any Co-Commercialized Program shall disband, and all decisions allocated to such Committees shall be decisions of Celgene, including decisions requiring Mutual Consent; 

(D) with respect to the [**] Split Program only: 
 (1) if any dispute arises at the JDC with respect to any changes to the Development Plan (including the Development Budget) or any Development activities conducted by a Party under such Split Program
(including clinical Manufacturing activities), and such dispute is not resolved at the JDC or JSC level or by the Executive Officers pursuant to Section 2.8, [**] shall have final decision-making authority with respect to such dispute,
including with respect to matters otherwise requiring Mutual Consent; provided that [**] shall exercise any such final decision-making authority in a manner consistent with a commitment of Commercially Reasonable Efforts to the Development
and Commercialization of Split Product under such Split Program in the US Territory. [**] shall have such final decision-making authority for such [**] Split Program until (x) FDA approval of the first SPA for the first pivotal trial for such
[**] Split Program, if the JDC decides to pursue a SPA, or (y) JDC approval of the protocol design for the first pivotal trial for such [**] Split Program, if the JDC decides not to pursue a SPA; and 

(2) Celgene shall pay Agios [**] percent ([**]%) of all Development Costs associated with any Phase I Studies incurred by Agios after
the consummation of such Change of Control; 
 (E) with respect to each Buy-In Program for which Celgene is the Buy-In Party,
Celgene shall have the right to elect during the Celgene Election Period to either (1) continue to pay its [**] percent ([**]%) share of Development Costs under such Buy-In Program, in which event royalty payments under Section 9.7(c) for
Buy-In Products under such Buy-In Program shall continue to be payable by Agios; or (2) discontinue paying its [**] percent ([**]%) share of Development Costs under such Buy-In Program, in which event royalty payments under Section 9.7(c)
for Buy-In Products under such Buy-In Program shall be reduced by [**] percent ([**]%); and 
 (F) except as otherwise provided
in this Section 15.5(a), all other financial obligations for any Licensed Programs, including milestone payments, royalty payments, and sharing of Global Development Costs for Split Programs, shall remain in place. 

(vi) The obligation to pay the milestone under Section 9.6(b) shall terminate. 

  
 - 133 -

 Agios shall transfer to Celgene all information and materials concerning such Programs in the manner set
forth in Section 3.15(c). 
 (b) Upon consummation of such Change of Control of Celgene, at the written election of
Celgene’s acquirer within [**] days following the consummation of such Change of Control, the Option Term shall be deemed to have expired and the process for identifying Validated Programs pursuant to Section 3.7 shall apply. If
Celgene’s acquirer elects to have the Option Term expire as a result of the Change of Control, the following shall apply: 

(i) Notwithstanding Section 3.7, the Parties shall alternate turns selecting Validated Programs, with [**] being entitled to the
[**] and [**] being entitled to the [**], and then repeating such picking order until all Validated Programs have been selected. Celgene shall pay Validated Program Discovery Costs as required by Section 9.3(b). In addition, the Discovery
Programs directed at [**] (unless they have become Licensed Programs) shall be included within the Parties’ Picks whether they are Validated Programs or not. Agios shall transfer to Celgene all information and materials concerning such Programs
in the manner set forth in Section 3.15(c). 
 (ii) At Celgene’s written election during such [**]-day period, with
respect to Programs that have already become Licensed Programs prior to the consummation of such Change of Control, Agios’ right to participate in the Commercialization of Co-Commercialized Products, as described in Section 6.3, shall
cease. With respect to each Buy-In Program for which Agios is the Buy-In Party, Agios shall have the right to elect within [**] days following the election by Celgene’s acquirer under this Section 15.5(b) to have the Option Term expire, to
either (1) continue to pay its [**] percent ([**]%) share of Development Costs under such Buy-In Program, in which event royalty payments under Section 9.7(c) for Buy-In Products under such Buy-In Program shall continue to be payable by
Celgene; or (2) discontinue paying its [**] percent ([**]%) share of Development Costs under such Buy-In Program, in which event royalty payments under Section 9.7(c) for Buy-In Products under such Buy-In Program shall be reduced by [**]
percent ([**]%). 
 (c) For purposes of this Section 15.5, “Change of Control” of a Party means any of the
following, in a single transaction or a series of transactions: (i) the sale or disposition of all or substantially all of the assets of such Party to a Third Party, (ii) the direct or indirect acquisition by a Third Party (other than
(A) an employee benefit plan (or related trust) sponsored or maintained by such Party or any of its Affiliates, and (B) in the case of Agios, any of its current shareholders and their respective Affiliates in a bona fide financing
transaction) of beneficial ownership of more than fifty percent (50%) of the then-outstanding common shares or voting power of such Party, or (iii) the merger or consolidation of such Party with or into a Third Party, unless, following
such merger or consolidation, the stockholders of such Party immediately prior to such merger or consolidation beneficially own directly or indirectly more than fifty percent (50%) of the then-outstanding common shares or voting power of the
entity resulting from such merger or consolidation. 

  
 - 134 -

 Section 15.6 Force Majeure. If the performance of any part of this Agreement by
a Party is prevented, restricted, interfered with or delayed by an occurrence beyond the control of such Party (and which did not occur as a result of such Party’s financial condition, negligence or fault), including fire, earthquake, flood,
embargo, power shortage or failure, acts of war or terrorism, insurrection, riot, lockout or other labor disturbance, governmental acts or orders or restrictions, acts of God (for the purposes of this Agreement, a “force majeure
event”), such Party shall, upon giving written notice to the other Party, be excused from such performance to the extent of such prevention, restriction, interference or delay; provided that the affected Party shall use its
Commercially Reasonable Efforts to avoid or remove such causes of non-performance and shall continue performance with the utmost dispatch whenever such causes are removed. 
 Section 15.7 Notices. Unless otherwise agreed by the Parties or specified in this Agreement, all notices required or permitted to be given under this Agreement shall be in writing and shall be
sufficient if: (a) personally delivered; (b) sent by registered or certified mail (return receipt requested and postage prepaid); (c) sent by express courier service providing evidence of receipt and postage prepaid where applicable;
or (d) sent by facsimile transmission (receipt verified and a copy promptly sent by another permissible method of providing notice described in clauses (a), (b) or (c) above), to address for a Party set forth below, or such other
address for a Party as may be specified in writing by like notice: 
  

			
	To Agios:	  	To Celgene:
		
	 Agios Pharmaceuticals, Inc.
 38
Sidney Street
 Cambridge, MA 02139

Attention: J. Duncan Higgons
 Telephone:
(617) 649-8634
 Facsimile: (617) 649-8618
	  	 Celgene Corporation
 86 Morris
Avenue
 Summit, NJ 07901
 Attention:
George S. Golumbeski
 Telephone: (908) 673-9043
 Facsimile: (908) 673-2769

		
	With a copy to:	  	With a copy to:
		
	 WilmerHale LLP
 60 State
Street
 Boston, MA 02109
 Attention:
Steven D. Singer, Esq.
 Telephone: (617) 526-6000
 Facsimile: (617) 526-5000
	  	 Celgene Corporation
 86 Morris
Avenue
 Summit, NJ 07901
 Attention:
Legal Department
 Telephone: (908) 673-9000
 Facsimile: (908) 673-2771

 Any such notices shall be effective upon receipt by the Party to whom it is addressed. 

Section 15.8 Waiver. Except as otherwise expressly provided in this Agreement, any term of this Agreement may be waived only
by a written instrument executed by a duly authorized representative of the Party waiving compliance. The delay or failure of either Party at any time to require performance of any provision of this Agreement shall in no manner affect such
Party’s rights at a later time to thereafter enforce such provision. No waiver by either Party of any condition or term in any one or more instances shall be construed as a further or continuing waiver of such condition or term or of another
condition or term. 

  
 - 135 -

 Section 15.9 Severability. If any provision of this Agreement should be held
invalid, illegal or unenforceable in any jurisdiction, the Parties shall negotiate in good faith a valid, legal and enforceable substitute provision that most nearly reflects the original intent of the Parties and all other provisions of this
Agreement shall remain in full force and effect in such jurisdiction and shall be liberally construed in order to carry out the intentions of the Parties hereto as nearly as may be possible. If the Parties cannot agree upon a substitute provision,
the invalid, illegal or unenforceable provision of this Agreement shall not affect the validity of this Agreement as a whole, unless the invalid, illegal or unenforceable provision is of such essential importance to this Agreement that it is to be
reasonably assumed that the Parties would not have entered into this Agreement without the invalid, illegal or unenforceable provision. 
 Section 15.10 Entire Agreement. This Agreement (including the Schedules and Exhibits attached hereto) constitutes the entire agreement between the Parties relating to its subject matter, and
supersedes all prior and contemporaneous agreements, representations or understandings, either written or oral, between the Parties with respect to such subject matter. There are no covenants, promises, agreements, warranties, representations,
conditions or understandings, either oral or written, between the Parties other than as set forth herein and therein. 

Section 15.11 Modification. No modification, amendment or addition to this Agreement, or any provision hereof, shall be
effective unless reduced to writing and signed by a duly authorized representative of each Party. No provision of this Agreement shall be varied, contradicted or explained by any oral agreement, course of dealing or performance or any other matter
not set forth in an agreement in writing and signed by a duly authorized representative of each Party. 
 Section 15.12
Independent Contractors; No Intended Third Party Beneficiaries. Nothing contained in this Agreement is intended or shall be deemed or construed to create any relationship of employer and employee, agent and principal, partnership or joint
venture between the Parties. Each Party is an independent contractor. Neither Party shall assume, either directly or indirectly, any liability of or for the other Party. Neither Party shall have any express or implied right or authority to assume or
create any obligations on behalf of, or in the name of, the other Party, nor to bind the other Party to any contract, agreement or undertaking with any Third Party. There are no express or implied third party beneficiaries hereunder, (a) except
for the indemnitees identified in Sections 13.1, 13.2 and 13.3, and (b) except that [**] are intended third-party beneficiaries of certain provisions of this Agreement, as specifically referred to herein. 

Section 15.13 Interpretation; Construction. The captions to the several Articles and Sections of this Agreement are included
only for convenience of reference and shall not in any way affect the construction of, or be taken into consideration in interpreting, this Agreement. In this Agreement, unless the context requires otherwise, (a) the word “including”
shall be deemed to be followed by the phrase “without limitation” or like expression; (b) references to the singular shall include the plural and vice versa; (c) references to masculine, feminine and neuter

  
 - 136 -

 
pronouns and expressions shall be interchangeable; (d) the words “herein” or “hereunder” relate to this Agreement; (e) “or” is disjunctive but not
necessarily exclusive; (f) the word “will” shall be construed to have the same meaning and effect as the word “shall”; and (g) all references to “dollars” or “$” herein shall mean U.S. Dollars. Each
Party represents that it has been represented by legal counsel in connection with this Agreement and acknowledges that it has participated in the drafting hereof. In interpreting and applying the terms and provisions of this Agreement, the Parties
agree that no presumption will apply against the Party which drafted such terms and provisions. 
 Section 15.14
Performance by Affiliates. To the extent that this Agreement imposes obligations on Affiliates of a Party, such Party agrees to cause its Affiliates to perform such obligations. 

Section 15.15 Counterparts. This Agreement may be executed in two (2) counterparts, each of which shall be deemed an
original, and both of which together shall constitute one and the same instrument. 
 [Remainder of page intentionally left
blank] 

  
 - 137 -

 IN WITNESS WHEREOF, the Parties have executed this Discovery and Development Collaboration
and License Agreement as of the Effective Date. 
  

			
	AGIOS PHARMACEUTICALS, INC.
		
	By:	 	/s/ David Schenkein
	 Name:
	 	David Schenkein
	 Title:
	 	CEO, Agios
	
	CELGENE CORPORATION
		
	By:	 	/s/ Sol J. Barer
	 Name:
	 	Sol J. Barer
	 Title:
	 	Chair/CEO

 Exhibit A 
 Certain Financial Definitions 
 “Accounting Standards”
means (a) GAAP (United States Generally Accepted Accounting Principles); or (b) IFRS (International Financial Reporting Standards), in either case, consistently applied. 

“Annual Net Sales” means, with respect to each Royalty-Bearing Product, the aggregate Net Sales of such Royalty-Bearing
Product by the Commercializing Party or its Affiliates or sublicensees in any Calendar Year or, in the first and last years of the term of this Agreement, the portion of such Calendar Year during which this Agreement is in effect. 

“Development Costs” means the costs and expenses that are actually incurred by or on behalf of a Party and specifically
identifiable or specifically allocable to the Development of Collaboration Compounds, Licensed Compounds and Licensed Products. Development Costs shall not include costs associated with Phase IV Studies. “Development Costs” shall include:

 (a) the FTE costs (determined by multiplying the number of FTE hours of service spent by the FTE Rate) of the relevant Party
or its Affiliates with respect to such Development; 
 (b) all Out-of-Pocket Costs incurred by the Parties or their Affiliates,
including payments made to Third Parties with respect to such Development (except to the extent that such costs have been included in FTE costs); 
 (c) Regulatory Expenses other than Regulatory Expenses included within Manufacturing Scale-Up Costs; 
 (d) the cost of contract research organizations (CROs); and 
 (e) Manufacturing
Costs for clinical supply, including: 
 (i) costs of packaging of drug products and distribution of drug products used in
Clinical Trials; 
 (ii) expenses incurred to purchase or package comparator drugs; 

(iii) costs and expenses of disposal of clinical samples; and 
 (iv) costs and expenses incurred in scaling up Manufacturing activities related to pre-clinical or clinical supply, including formulation development activities; 

all of such costs, as determined from the books and records of the applicable Party and its Affiliates maintained in accordance with the Accounting
Standards. Notwithstanding anything in this definition to the contrary, only those Development Costs that are contemplated by, and materially consistent with, the Development Plan and Development Budget for the applicable Collaboration Compound,
Licensed Compound or Licensed Product shall be chargeable as Development Costs. 

  
 Exhibit A-1

 “Field-Based Costs” means all Agios’ costs associated with the
Commercialization Activities related to Co-Commercialized Products in the US Territory allocated to Agios under the applicable Commercialization Plan, including, if applicable, sales representatives and training of the sales representatives, sales
meetings, details, sales call reporting, work on managed care accounts, costs related to customer service and other sales and customer service related expenses; provided that the Commercialization Plan shall set forth the rate at which
the Field-Based Costs of Agios will be reimbursed. If Agios’ personnel allocated to the Commercialization Activities sells products other than Co-Commercialized Products, only that portion of such personnel’s efforts that are related to
the Co-Commercialized Products in the US Territory shall be included as Field-Based Costs hereunder. 
 “FTE”
means a full-time equivalent person year (consisting of a total of [**] hours per year) of scientific, technical or commercialization work undertaken by a Party’s employees. 

“FTE Rate” means $[**] per FTE for the period commencing on the Effective Date and ending
December 31, 2011. On January 1, 2012 and on January 1st of each subsequent Calendar Year, the foregoing rate shall be increased for the Calendar Year then commencing by the percentage increase, if any, in the Consumer Price Index (“CPI”) as
of December 31 of the then most recently completed Calendar Year with respect to the level of the CPI on December 31, 2010. As used in this definition, Consumer Price Index or CPI means the Consumer Price Index – Urban Wage Earners
and Clerical Workers, US City Average, All Items, 1982-84 = 100, published by the United States Department of Labor, Bureau of Labor Statistics (or its successor equivalent index). 

“Global Development Costs” means, with respect to a Split Product, all Development Costs other than Territory-Specific
Development Costs. 
 “Global Study” means any study that is “used” in both the US Territory and the
ROW Territory, with “used” meaning that it will be submitted to the relevant Regulatory Authorities in the United States and the ROW Territory, other than studies submitted solely to meet safety reporting obligations. 

“Manufacturing Costs” means, with respect to Collaboration Compounds, Licensed Compounds or Licensed Products, the
reasonable FTE costs and Out-of-Pocket Costs of a Party or any of its Affiliates or sublicensees incurred in Manufacturing such Collaboration Compounds, Licensed Compounds or Licensed Products, including Manufacturing Scale-Up Costs and including:

 (a) to the extent that any such Collaboration Compound, Licensed Compound or Licensed Product is manufactured by a Party or
any of its Affiliates or sublicensees, direct material and direct labor costs, plus manufacturing overhead attributable to such Collaboration Compound, Licensed Compound or Licensed Product (including facility start-up costs, all directly incurred
manufacturing variances, and a reasonable allocation of related manufacturing administrative and facilities costs (including depreciation) and a reasonable allocation of the 

  
 Exhibit A-2

 
costs of failed batches to be further described in the applicable supply agreement, to be provided for such Collaboration Compound, Licensed Compound or Licensed Product, but excluding costs
associated with excess capacity), all determined in accordance with the books and records of the applicable Party or its Affiliates or sublicensees maintained in accordance with the Accounting Standards, consistently applied; and 

(b) to the extent that any such Collaboration Compound, Licensed Compound or Licensed Product is manufactured by a Third Party
manufacturer, the Out-of-Pocket Costs paid by a Party or any of its Affiliates or sublicensees to the Third Party for the manufacture, supply, packaging and labeling of such Collaboration Compound, Licensed Compound or Licensed Product, and any
reasonable Out-of-Pocket Costs and direct labor costs actually incurred by such Party or any of its Affiliates or sublicensees in managing or overseeing the Third Party relationship, determined in accordance with the books and records of the
applicable Party or its Affiliates or sublicensees maintained in accordance with the Accounting Standards, consistently applied. 
 “Manufacturing Scale-Up Costs” means the reasonable FTE costs and Out-of-Pocket Costs of a Party or any of its Affiliates or sublicensees incurred in scaling up Manufacturing activities
related to Licensed Compounds or Licensed Products for commercial supply, including (a) costs for process development work, analytical method optimization, and process validation, (b) costs for complete technology transfer to a commercial
site (including costs for Manufacturing of demonstration batches on a suitable scale), and (c) Regulatory Expenses associated with such Manufacturing activities. 
 “Net Sales” means, with respect to any Royalty-Bearing Product, gross amounts invoiced by the Commercializing Party, its Affiliates or its sublicensees to Third Parties (that are not
sublicensees) for the sale or other commercial disposition of such Royalty-Bearing Product anywhere within the Territory, including sales to wholesale distributors, less deductions from such amounts calculated in accordance with the Accounting
Standards so as to arrive at “net sales” under the Accounting Standards, and further reduced by write-offs of accounts receivables or increased for collection of accounts that were previously written off. 

Net Sales, and any and all set-offs against gross amounts invoiced, shall be determined from books and records maintained in accordance
with the Accounting Standards, consistently applied throughout the organization and across all products of the entity whose sales of any Royalty-Bearing Product are giving rise to Net Sales. Sales or other commercial dispositions of Royalty-Bearing
Products between the Commercializing Party and its Affiliates and its sublicensees, and Royalty-Bearing Products provided to Third Parties without charge, in connection with research and development, clinical trials, compassionate use, humanitarian
and charitable donations, or indigent programs or for use as samples shall be excluded from the computation of Net Sales, and no payments will be payable on such sales or such other commercial dispositions, except where such an Affiliate or
sublicensee is an end user of the Royalty-Bearing Product. 
 If a Royalty-Bearing Product is sold or otherwise commercially
disposed of for consideration other than cash or in a transaction that is not at arm’s length between the buyer and the seller, then the gross amount to be included in the calculation of Net Sales shall be the

  
 Exhibit A-3

 
amount that would have been invoiced had the transaction been conducted at arm’s length and for cash. Such amount that would have been invoiced shall be determined, wherever possible, by
reference to the average selling price of the relevant Royalty-Bearing Product in arm’s length transactions in the relevant country. 
 Notwithstanding the foregoing, in the event a Royalty-Bearing Product is sold as a Combination Product, Net Sales shall be calculated by multiplying the Net Sales of the Combination Product by the
fraction A/(A+B), where A is the gross invoice price of the Royalty-Bearing Product if sold separately in a country and B is the gross invoice price of the other product(s) included in the Combination Product if sold separately in such country. If
no such separate sales are made by the Commercializing Party, its Affiliates or sublicensees in a country, Net Sales of the Combination Product shall be calculated in a manner to be negotiated and agreed upon by the Parties, reasonably and in good
faith, prior to any sale of such Combination Product, which shall be based upon the relative value of the active components of such Combination Product. 
 As used in this definition, “Combination Product” means any product that comprises a Royalty-Bearing Product sold in conjunction with another active component so as to be a combination
product (whether packaged together or in the same therapeutic formulation). Pharmaceutical dosage form vehicles, adjuvants and excipients shall be deemed not to be “active ingredients.” 

“Out-of-Pocket Costs” means, with respect to certain activities hereunder, direct expenses paid or payable by either
Party or its Affiliates to Third Parties (other than employees of such Party or its Affiliates) that are specifically identifiable and incurred to conduct such activities for a Program hereunder and have been recorded in accordance with the
Accounting Standards. 
 “Regulatory Expenses” means, with respect to a Collaboration Compound, Licensed
Compound or Licensed Product, all Out-of-Pocket Costs incurred by or on behalf of a Party in connection with the preparation and filing of regulatory submissions for such Collaboration Compound, Licensed Compound or Licensed Product and obtaining of
Regulatory Approvals and any applicable governmental price and reimbursement approvals. 
 “Territory-Specific
Development Costs” means, with respect to a Split Product, any Development Costs that are incurred in connection with obtaining Regulatory Approval or Commercialization specifically related only to the US Territory (in which event such
costs shall be the responsibility of Agios) or to the ROW Territory (in which event such costs shall be the responsibility of Celgene). 

  
 Exhibit A-4

 Schedule 1.1 
 Baseline Activity 
 Screening Hits: 

[**] 
 Active compound: [**] 

 Schedule 1.6 
 Agios Patent Rights 
 (as of the Effective Date) 

 

									
	 Matter #
	  	 Appln No.
	  	 Filing Date
	  	 Subject
	  	 Application Title

Confidential Materials omitted and filed separately with the Securities and Exchange Commission. A total of 5 pages were omitted. [**] 

  
 Schedule 1.6 -
1 

 Schedule 1.53 
 Existing Third Party Agreements 
 [**] 

Agios has disclosed to Celgene that Agios intends to allocate a portion of the total consideration paid by Celgene pursuant to Section 9.1 and
Section 9.2 of this Agreement to the foregoing agreements, as follows: 
 [**] 

 Schedule 1.65 
 IND Study Criteria 
 IND-Enabling Studies to include: 

[**] 

 Schedule 1.91 
 Phase I MAD Protocol Criteria 
 Protocol shall be designed to evaluate [**]. 

The primary endpoints will be [**]. 
 The study
design, endpoints, and evaluation will be modified as mandated by the FDA. 
 The study may be conducted at [**]. 

 Schedule 1.93 
 Phase I Report Criteria 
 [**] 

 Schedule 1.105 

Publication Guidelines 

Unless the JSC by Mutual Consent agrees otherwise, the Parties agree as follows: 
 [**] 

 Schedule 1.119 

Target List 
  

							
	 Target*1
	  	 Isoforms/Mutation Status
	  	 Name
	  	 UniProt identifier

Confidential Materials omitted and filed separately with the Securities and Exchange Commission. A total of three pages were omitted. 

[**] 

  
 Schedule 1.119
- 1 

 Schedule 1.128 

Validation Criteria 

Target Validation (biology) 
 [**]. 

Validated Target: 
 A validated Target will
satisfy criteria for Target validation above [**]. 

 Schedule 3.5(a) 

Target Inclusion Criteria 

Available data from published literature or generated in the course of research activities in the Collaboration links a particular Target to [**].

 Schedule 3.5(b) 

Certain Rationale for Target/Program Exclusion 
 For purposes of illustration only and without limitation, the following may be presented as rationale for removing a Collaboration Target from the Target List: 

[**] 

 Schedule 3.6(b) 

Clinical Candidate Guidelines 
 Confidential Materials omitted and filed separately with the Securities and Exchange Commission. A total of three pages were omitted. [**] 
 Back-Up Compounds: [**]. 

  
 Schedule
3.6(b) - 1 

 Schedule 10.2(f) 

Countries for Filing Agios Collaboration Patent Rights 
 [**]. 

 Schedule 11.3 
 Press Release 
  

			
	

	  	

 CELGENE CORPORATION AND AGIOS PHARMACEUTICALS ANNOUNCE GLOBAL 

STRATEGIC COLLABORATION TO ADVANCE UNIQUE SCIENCE OF CANCER 
 METABOLISM 
 —Partnership leverages transformational science at
Agios and translational capabilities of 
 Celgene to target areas of significant unmet medical need— 

SUMMIT, N.J. & CAMBRIDGE, Mass.—April 15, 2010—(BUSINESS WIRE)—Celgene Corporation (NASDAQ: CELG) and Agios Pharmaceuticals
Inc., a privately-held biotechnology company, today announced the formation of a global strategic collaboration focused on targeting cancer metabolism. The goal of the collaboration is to discover, develop, and deliver novel disease-altering
therapies in oncology based on the transformational science of Agios’ innovative cancer metabolism research platform. This platform is based on the concept that targeting key metabolic enzymes unique to rapidly proliferating cancer cells can
“starve” the cancer. 
 Under the terms of the agreement, Agios will receive a $130 million upfront payment, including an equity
investment. In return, Celgene receives an initial period of exclusivity during which it has the option to develop any drugs resulting from the Agios cancer metabolism research platform, In addition, Celgene may extend this exclusivity period
through additional funding. If successful, Agios would receive substantial regulatory, clinical and commercial milestones. 
 “Agios’
approach is unique and groundbreaking. We look for early opportunities in the IDH1 and PKM2 programs and see exceptional value in new targets Agios is uniquely positioned to prosecute,” said Thomas Daniel, M.D., President of Research for
Celgene. “We believe the strategic alliance with Agios can expand our deep and diverse pipeline of innovative programs focused on changing treatment paradigms in serious and debilitating diseases.” 

Agios will lead discovery and early translational development for all cancer metabolism programs. Celgene has an exclusive option to license any
resulting clinical candidates at the end of Phase I, and will lead and fund global development and commercialization of licensed programs. On each program, Agios may receive up to $120 million in milestones as well as royalties on sales, and may
also participate in the development and commercialization of certain products in the US. 
 “We are thrilled to establish this alliance
with Celgene, a pre-eminent global biopharmaceutical company, that shares our passion and commitment to discovering breakthrough medicines that may improve the lives of cancer patients worldwide,” said David Schenkein, M.D., Chief Executive
Officer of Agios. “This transformational alliance provides Agios with the long-term resources and flexibility to extend our leadership position in the cancer metabolism field and to advance our capabilities and programs as an integrated,
independent company.” 

 About Cancer Metabolism 
 Cancer metabolism is a new and exciting field of biology that provides an innovative approach to treating cancer. Cancer cell metabolism is marked by profound changes in nutrient requirements and usage to
ensure cell proliferation and survival. Research in the field has demonstrated that cancer cells become addicted to certain fuel sources and metabolic pathways. Identifying and disrupting certain enzymes in these metabolic pathways provides a
powerful intervention point for discovery and development of cancer therapeutics. 
 About Agios Pharmaceuticals 

Agios Pharmaceuticals, a private, independent biopharmaceutical company, is dedicated to the discovery and development of novel therapeutics in the
emerging field of cancer metabolism. To support and drive these efforts, Agios has built a robust platform integrating biology, metabolomics, biochemistry and informatics to enable target and biomarker identification. 

To date, Agios has put in place a world-class scientific team, built the largest research laboratory dedicated to cancer metabolism and created an
emerging compound development pipeline of novel cancer therapeutics. The Company’s founders and scientific advisors represent the core thought leaders in the field of cancer metabolism, responsible for key advances, insights and discoveries in
the field. Agios Pharmaceuticals is located in Cambridge, Massachusetts. The company is financed by Third Rock, Flagship, ARCH Venture Partners. For more information, please visit the company’s website at www.agios.com. 

About Celgene 
 Celgene Corporation is an
integrated global biopharmaceutical company engaged primarily in the discovery, development and commercialization of innovative therapies for the treatment of cancer and inflammatory diseases through gene and protein regulation. For more
information, please visit the Company’s website at www.celgene.com. 
 Forward-Looking Statements 

This release contains certain forward-looking statements which involve known and unknown risks, delays, uncertainties and other factors not under the
Company’s control. The Company’s actual results, performance, or achievements could be materially different from those projected by these forward-looking statements. The factors that could cause actual results, performance, or achievements
to differ from the forward-looking statements are discussed in the Company’s filings with the Securities and Exchange Commission, such as the Company’s Form 10-K, 10-Q and 8-K reports. Given these risks and uncertainties, you are cautioned
not to place undue reliance on the forward-looking statements. 
 Contact: 
 Celgene Corporation 
 David W. Gryska, 908-673-9059 

Senior Vice President and 
 Chief Financial
Officer 

 or 

Tim Smith, 908-673-9951 
 Director 

Investor Relations 
 Agios Pharmaceuticals

 Yates Public Relations 
 Kathryn
Morris 
 845-635-9828 

### 

 FINAL 
 FIRST AMENDMENT 
 TO 

DISCOVERY AND DEVELOPMENT 
 COLLABORATION AND LICENSE AGREEMENT 
 This First Amendment to the
Discovery and Development Collaboration and License Agreement (the “First Amendment”) is entered into as of October 3rd, 2011 (the “Amendment Effective Date”) by and between Agios Pharmaceuticals, Inc. (“Agios”)
and Celgene Corporation (“Celgene”). Agios and Celgene may each be referred to herein individually as a “Party” and collectively as the “Parties.” 
 INTRODUCTION 
 1. Celgene and Agios are parties to that certain Discovery
and Development Collaboration and License Agreement, dated as of April 14, 2010 (the “Agreement”). 
 2. Pursuant
to the Agreement, the Parties have engaged in the Development of Collaboration Compounds against Collaboration Targets. 
 3.
The Parties wish to amend the Agreement with respect to the use of PKR as a Target and to provide for certain rights for Agios to investigate PKR outside of the Collaboration. 
 NOW, THEREFORE, in consideration of the covenants and agreements contained herein, and for other valuable consideration, the receipt and adequacy of which are hereby acknowledged, Agios and Celgene agree
as follows: 
 1. Definitions. Capitalized terms used in this First Amendment and not otherwise defined herein
shall have the meanings set forth in the Agreement. 
 2. Amendments. The Agreement is amended as follows:

 (a) Additional Defined Terms. Article I of the Agreement is hereby amended by adding the following additional
defined terms to such Article in the sections set forth below: 
 Section 1.6A “Agios Final PKR Compounds”
means the compounds designated by Agios pursuant to Section 3.17(c)(ii). 
 Section 1.6B “Agios Initial PKR
Compounds” means the specific chemical entities set forth on Schedule 1.6A attached hereto. 
 Section 1.6C
“Agios PKR Program” means the Development (excluding screening of PKR with Collaboration Compounds), Manufacture and Commercialization by Agios and its Affiliates and, subject to Section 3.17(c), licensees and sublicensees, of
compounds that [**] to PKR (including the Agios Final PKR Compound). 

 Section 1.10A “Amendment Effective Date” means, October 3rd,
2011, which is the effective date of that certain First Amendment to the Discovery and Development Collaboration and License Agreement between the Parties. 
 Section 1.100B “PKR” means [**]. 
 (b) Amendment of
[**] Definition. Section 1.100 of the Agreement is hereby amended and restated in its entirety to read as follows: 
 Section 1.100 “[**]” means [**]. Notwithstanding the foregoing, [**] shall not be included within, or be deemed to constitute a part of, [**]. 

(c) Agios PKR Program. Article III of the Agreement is hereby amended to include a new Section 3.17, as follows:

 Section 3.17 Agios PKR Program. 

(a) Generally. Celgene acknowledges that Agios intends to undertake the Agios PKR Program, either alone or
in collaboration with one or more Affiliates and, subject to Section 3.17(c), Third Parties, and that activities undertaken pursuant to the Agios PKR Program for non-Oncology Indications that consist of [**] treating hereditary non-spherocytic
haemolytic anemia [**] (the “PKR Indications”) shall not constitute activities of the Collaboration, and Celgene shall have no rights with respect to (i) the Agios PKR Program except for those provided in Section 3.17(b)
or (ii) any products containing the Agios Final PKR Compound as an active ingredient. The foregoing sentence shall not be construed as granting Agios any rights to use Licensed Compounds and/or Licensed Products in any products
containing the Agios Final PKR Compound. Agios agrees that it shall not screen PKR with Collaboration Compounds. Without limiting the generality of the foregoing, the Agios PKR Program shall not be deemed to constitute an Agios
Reverted Program or an Independent Program. Agios acknowledges that its activities pursuant to the Agios PKR Program shall continue to be subject to the terms and conditions of Article I, Sections 8.8 (except, under Sections 8.8(a)(ii) and
(d), with respect to the PKR Indications), 12.5, 13.2, 13.5, 14.2(b), and 14.3(d)-(f) the Agreement. Solely for purposes of Agios’ obligations under Section 8.8 with respect to the Agios PKR Program, [**] shall continue to be
deemed [**], except, under Sections 8.8(a)(ii) and (d), with respect to the PKR Indications. Agios shall have no rights to, and shall not, use any intellectual property rights of Celgene (including any Celgene Collaboration Intellectual
Property or Celgene Intellectual Property) in connection with the Agios PKR Program. For the avoidance of doubt, none of the licenses granted to Agios by Celgene under Article VIII shall include any licenses with respect to the Agios PKR
Program, Agios Final PKR Compounds or Agios Initial PKR Compounds. 

 (b) Compounds Under the Agios PKR Program. Celgene
acknowledges that Agios may (i) chemically modify the Agios Initial PKR Compounds set forth on Schedule 1.6A, or (ii) Develop (excluding screening of PKR with Collaboration Compounds), Manufacture and Commercialize other chemical
entities against PKR, under the Agios PKR Program. Celgene acknowledges and agrees that Agios shall have the right to maintain the Agios Initial PKR Compounds set forth on Schedule 1.6A and a maximum of [**] chemically modified
compounds under Section 3.17(b)(i), until expiration of the Designation Period (as defined below). Prior to the Designation Period, on a rolling basis, but in no event less than [**], excluding the Agios Initial PKR Compounds set forth
on Schedule 1.6A and the [**]-chemically modified compounds under Section 3.17(b)(i), the chemically modified compounds under Section 3.17(b)(i) shall be deemed Collaboration Compounds and shall be subject to the terms and
conditions of the Agreement, including any exclusive licenses granted to Celgene pursuant to Article VII. Agios shall provide the JDC with any available information and data, including, in vitro and in vivo results, generated
under the Agios PKR Program with respect to such chemically modified compounds that are deemed Collaboration Compounds and such information and data shall be deemed Collaboration Know-How. 

(c) Agios Initial PKR Compounds and Agios Final PKR Compounds. 

(i) As of the Amendment Effective Date, Schedule 1.6A sets forth one (1) compound as a lead candidate and [**]
compounds as back-up candidates, which shall cease to constitute Agreement Compounds and the Compound List for the Discovery Program related to [**] is hereby deemed amended to exclude the Agios Initial PKR Compounds set forth on Schedule 1.6A.

 (ii) Upon the earlier of [**] or at any time prior to [**] of [**] of the Agios Initial PKR Compounds and
[**]-chemically modified compounds under Section 3.17(b)(i), with notice to Celgene, Agios shall designate [**] compounds as the Agios Final PKR Compounds (the “Designation Period”). For the avoidance of doubt, the Agios Final
PKR Compounds designated under this subsection shall not be deemed an Agreement Compound. Upon expiration of the Designation Period, excluding the Agios Final PKR Compounds, all compounds from the Agios Initial PKR Compounds and all remaining
chemically modified compounds under Section 3.17(b)(i) (including the [**]-chemically modified compounds), shall be deemed Collaboration Compounds and shall be subject to the terms and conditions of the Agreement, including any exclusive
licenses granted to Celgene pursuant to Article VIII and Schedule 1.6A shall be updated accordingly. Agios shall provide any available information and data, including, in vitro and in vivo results, generated

 
under the Agios PKR Program, excluding the Agios Final PKR Compounds, with respect to such Agios Initial PKR Compounds and all remaining chemically modified compounds under
Section 3.17(b)(i) (including the [**]-chemically modified compounds) and such information and data shall be deemed Collaboration Know-How. 
 (d) Third Party Licensees. Subject to the following right of first negotiation, Agios shall have the right to conduct the Agios PKR Program in collaboration with a Third Party, and shall
have the right to grant licenses in connection therewith. For a period beginning on the Amendment Effective Date and ending on NDA approval of a chemical entity against PKR, under the Agios PKR Program, (the “ROFN Period”), if Agios
or its Affiliates intend to enter into negotiations with Third Parties with respect to the Agios PKR Program, whether as part of a collaboration, license or otherwise (other than in connection with a Change of Control), Agios shall first so notify
Celgene and Celgene shall have the right to, by notice to Agios within [**] days, to negotiate exclusively with Agios with respect to the Agios PKR Program. If Celgene provides such notice within such period, Agios and Celgene shall enter
into good faith negotiations for a period of up to [**] days thereafter with respect to the Agios PKR Program. Agios and its Affiliates shall not negotiate with or grant any rights to any Third Party with respect to the Agios PKR Program
during such negotiation period. In the event the Parties reach agreement during such [**]-day period (or such longer period as the Parties may agree upon), then the Agios PKR Program shall be subject to the agreement reached by the
Parties. If the Parties do not reach agreement with respect to the Agios PKR Program during such [**]-day period (or such longer period as the Parties may agree upon), Agios shall be free during the next [**] months after the expiration of
the foregoing [**]-day (or, if applicable, longer) negotiation period to commence negotiations with Third Parties and enter into collaboration and license agreements with such Third Parties with respect to the Agios PKR Program; provided
that, if Agios does not enter into a collaboration, license or otherwise prior to the expiration of such [**]-month period, the Agios PKR Program shall again be subject to the provisions of this Section 3.17(d). With respect to the
conduct of the Agios PKR Program, such Third Parties shall be subject to the terms and conditions of this First Amendment (including the provisions of Section 8.8 of the Agreement) to the same extent as Agios. For purposes of clarity, the right
of first negotiation set forth above shall not apply to the use of Third Party Contractors by Agios or its Affiliates; provided that Agios shall be liable for any failure by its Affiliates and Third Party Contractors to comply with all
relevant restrictions, limitations and obligations in this First Amendment. 

 (e) Patent Rights. All Agios Patent Rights and Collaboration
Patent Rights shall continue to be subject to the terms and conditions of Article X of this Agreement (except, under Section 10.2(g), with respect to Agios Patent Rights and Agios Collaboration Patent Rights that are directed solely to the
Agios Final PKR Compounds); provided that Agios shall have the final say in the prosecution and enforcement of Agios Patent Rights and Agios Collaboration Patent Rights are directed solely to the Agios Final PKR Compounds. 

(d) Schedules. The Agreement is hereby amended by adding a new Schedule 1.6A in the form attached hereto as Annex A.

 3. Acknowledgements. For purposes of clarity, the Parties acknowledge that (i) PKR shall be deemed to be
removed from the Target List as of the Amendment Effective Date, and (ii) PKR shall not be deemed to constitute an Agios Reverted Target or an Independent Target. Notwithstanding the foregoing, the Agios PKR Program shall be subject to the
terms and conditions of this First Amendment and Article I, Sections 8.8 (except, under Sections 8.8(a)(ii) and (d), with respect to the PKR Indications), 12.5, 13.2, 13.5, 14.2(b), and 14.3(d)-(f) the Agreement. 

4. Incorporation. Article 15 of the Agreement is hereby incorporated mutatis mutandis into this First Amendment.

 5. Effect on Agreement. Except as specifically amended by this First Amendment, the Agreement will remain in
full force and effect and is hereby ratified and confirmed. To the extent a conflict arises between the terms of the Agreement and this First Amendment, the terms of this First Amendment shall prevail but only to the extent necessary to
accomplish their intended purpose. 
 [Remainder of Page Intentionally Left Blank] 

 IN WITNESS WHEREOF, the Parties have executed this First Amendment as of the Amendment
Effective Date. 
  

			
	AGIOS PHARMACEUTICALS, INC.
		
	By:	 	 /s/ David Schenkein

	Title: CEO
	
	CELGENE CORPORATION
		
	By:	 	 /s/ Robert J. Hugin

	Title: CEO
	
	CELGENE LEGAL
	
	 /s/ John [illegible]

 Annex A 
 Schedule 1.6A to the Discovery and Development Collaboration and License Agreement 
 Agios Initial PKR Compounds: [**] 

 SECOND AMENDMENT 

TO 

DISCOVERY AND DEVELOPMENT 
 COLLABORATION AND LICENSE AGREEMENT 
 This Second Amendment to the
Discovery and Development Collaboration and License Agreement (the “Second Amendment”) is entered into as of October 3rd, 2011 (the “Second Amendment Effective Date”) by and between Agios Pharmaceuticals, Inc.
(“Agios”) and Celgene Corporation (“Celgene”). Agios and Celgene may each be referred to herein individually as a “Party” and collectively as the “Parties.” Capitalized terms used in this Second Amendment and
not otherwise defined herein shall have the meanings set forth in the Agreement. 
 INTRODUCTION 

1. Celgene and Agios are parties to that certain Discovery and Development Collaboration and License Agreement, dated April 14, 2010
and amended October 3rd, 2011 (the “Agreement”). 
 2. Pursuant to the Agreement, the Parties have engaged in a
collaboration that applies Agios’ expertise and technology to the discovery and validation of novel targets, primarily cancer metabolism targets, and the discovery and development of associated therapeutics, primarily in the Oncology Field, and
provides for the development and commercialization of such therapeutics. 
 3. The Parties wish to amend the Agreement in order
to extend the term of the Initial Phase and amend the terms of the First Extension Phase. 
 NOW, THEREFORE, in consideration of
the covenants and agreements contained herein, and for other valuable consideration, the receipt and adequacy of which are hereby acknowledged, Agios and Celgene agree as follows: 

1. Amendment and Restatement of Section 3.3. Section 3.3 of the Agreement is hereby amended and restated in its
entirety to read as follows: 
 Section 3.3 Option Term. 

(a) Initial Phase. Except as otherwise set forth in Section 3.3(b)(iii) below, the initial phase of the
Collaboration shall commence on the Effective Date and end four (4) years following the Effective Date (the “Initial Phase”). 

 (b) First Extension Phase. 

(i) Celgene shall have the right to elect to extend the Option Term following the Initial Phase (“First Extension
Option”) for a period (the “First Extension Phase”) ending upon the earlier of: 
 (A)
the date following the Effective Date on which (1) FPD of [**] Collaboration Compounds has occurred and (2) the JRC has confirmed the nomination of an additional Development Candidate (the “Second Extension Option Trigger
Event”); and 
 (B) [**] following the end of the Initial Phase. 

(ii) Celgene may exercise the First Extension Option by (x) providing written notice to Agios of such election; and
(y) paying to Agios [**] Dollars (US$[**]). If Celgene elects to exercise such option, such notice and payment shall be made as follows: 
 (A) Unless Section 3.3(b)(ii)(B) or 3.3(b)(ii)(C) below applies, if Celgene elects the First Extension Option, Celgene must provide such exercise notice [**] months prior to the end of the initial
Phase and must pay such $[**] within [**] days following the end of the Initial Phase. 
 (B) If Agios has not
nominated [**] Development Candidates that are confirmed by the JRC at least [**] months prior to the end of the Initial Phase but [**] Development Candidates are so confirmed prior to the end of the Initial Phase, then, if Celgene elects the First
Extension Option, Celgene must provide such exercise notice within [**] months following such confirmation of [**] Development Candidates and must pay such $[**] within [**] days following the later of (1) delivery of such notice and
(2) the end of the Initial Phase. 
 (C) If Celgene elects to have Agios continue Development of the
Development Candidates into the Extended Initial Phase in accordance with Section 3.3(b)(iii), then, if Celgene elects the First Extension Option, Celgene must provide such exercise notice on or prior to the date that is [**] days following the
end of the Extended Initial Phase and must pay such $[**] days following delivery of such notice. 
 (iii)
Notwithstanding anything in this Section 3.3 to the contrary, if Agios believes that Agios will not be able to nominate at least [**] Development Candidates that meet the Clinical Candidate Guidelines by the end of the Initial Phase, Agios
shall notify Celgene thereof (to the extent practicable, by no later than [**] months prior to the end of the Initial Phase). If the JRC has not confirmed at least [**] Development Candidates nominated by Agios that meet the Clinical Candidate
Criteria within the Initial Phase, then Celgene shall have the right to either exercise its First Extension Option as provided in Section 3.3(b)(ii)(A) or to have Agios continue Development following the end of the Initial Phase. If Celgene
elects to have Agios continue Development, the Initial Phase shall 

 
be extended until the earlier of (x) [**] following the end of the original [**]-year Initial Phase and (y) such time as the JRC has confirmed the nomination of at least [**]
Development Candidates that meet the Clinical Candidate Guidelines following the Effective Date (the “Extended Initial Phase”). 
 (A) If Celgene elected to have Agios continue Development through the Extended Initial Phase and the JRC confirms [**] Development Candidates nominated by Agios that meet the Clinical Candidate Guidelines
by the end of the Extended Initial Phase, Celgene shall have the right to elect, in its sole discretion (to be exercised in accordance with Section 3.3(b)(ii)(C)), to extend the Option Term following such Extended Initial Phase until the end of
the period set forth in Section 3.3(b)(iii)(D). If Celgene does not elect to extend the Option Term through such period, the Option Term shall expire at the end of such Extended Initial Phase and the picking mechanism set forth in
Section 3.7 shall apply with respect to Validated Programs at such time. 
 (B) If the JRC confirms [**]
nominated by Agios that meets the Clinical Candidate Guidelines by the end of the Extended Initial Phase, but fails to confirm the nomination of [**] by the end of the Extended Initial Phase, Celgene shall have the right, in its sole discretion (to
be exercised in accordance with Section 3.3(b)(ii)(C)), to extend the Option Term following such Extended Initial Phase until the end of the period set forth in Section 3.3(b)(iii)(D). If Celgene does not elect to extend the Option Term
through such period, the Option Term shall expire at the end of such Extended Initial Phase and the picking mechanism set forth in Section 3.7 shall apply with respect to Validated Programs at such time; provided, however, that,
notwithstanding anything in Section 3.7, 9.3(b) or 9.6(a) to the contrary, (1) [**] shall be entitled to the [**] Picks (including, if such Program has not reached the DC Selection Stage, [**]), and the Parties shall then alternate turns
(with [**] having the first turn) selecting [**] until all Validated Programs have been selected; (2) Celgene shall not be obligated to pay any Validated Program Discovery Costs with respect to Celgene’s Picked Validated Program(s); and
(3) Celgene shall be obligated to pay to Agios royalties as set forth in Section 9.7(d) but shall not be obligated to pay to Agios any of the milestone payments set forth in Section 9.6(a), in each case, with respect to Licensed
Compounds and Licensed Products under Celgene’s Picked Validated Program(s). 
 (C) If the JRC fails to
confirm the nomination of any Development Candidate by the end of the Extended Initial Phase, Celgene shall have the right, in its sole discretion (to be exercised in accordance with Section 3.3(b)(ii)(C)), to extend the Option Term following
such Extended Initial Phase until the end of the period set forth in Section 3.3(b)(iii)(D). If Celgene does not elect to extend the Option 

 
Term through such period, the Option Term shall expire at the end of such Extended Initial Phase and the picking mechanism set forth in Section 3.7 shall apply with respect to Validated
Programs at such time; provided, however, that, notwithstanding anything in Section 3.7, 9.3(b) or 9.6(a) to the contrary, (1) Celgene shall have the right to select all Validated Programs remaining in the Collaboration at
such time (including, if such Program has not reached the DC Selection Stage, [**]); (2) Celgene shall not be obligated to pay any Validated Program Discovery Costs with respect to Celgene’s Picked Validated Program(s); and
(3) Celgene shall be obligated to pay to Agios royalties as set forth in Section 9.7(d) but shall not be obligated to pay to Agios any of the milestone payments set forth in Section 9.6(a), in each case, with respect to Licensed
Compounds and Licensed Products under such Picked Validated Program(s). 
 (D) If Celgene elects to extend the
Option Term following such Extended Initial Phase pursuant to Section 3.3(b)(iii)(A), 3.3(b)(iii)(B), or 3.3(b)(iii)(C), such First Extension Phase shall extend until the earlier of (1) the Second Extension Option Trigger Event and
(2) [**] following the end of the Extended Initial Phase, and, in such event, such period shall be deemed the “First Extension Period.” 
 (E) For purposes of clarity, if the JRC confirms [**] Development Candidates nominated by Agios in the same Calendar Year prior to the end of the Extended Initial Phase, Agios shall be deemed to have met
its obligation under this Section 3.3(b)(iii) to nominate at least [**] Development Candidates that the JRC confirms meet the Clinical Candidate Guidelines by the end of the Extended Initial Phase irrespective of whether Celgene defers (or has
the right to defer) making the DC Commitment with respect to [**] pursuant to Section 3.6(d) below. In addition, if, during the Initial Phase (or, if applicable, the Extended Initial Phase): 

(1) Celgene elects to unilaterally remove a Target from the Target List pursuant to Section 3.5(b) after a
Development Candidate directed to such Target had been nominated by Agios and the JRC has not determined that such Development Candidate does not meet the Clinical Candidate Guidelines (as described in Section 3.6(b)(v)), 

(2) Celgene elects to unilaterally remove a Target from the Target List within the [**] period prior to when a
Development Candidate directed to such Target would have been nominated by Agios (as contemplated under the Discovery Plan); provided that the lead optimization chemical series in the Discovery Program related to such Target has demonstrated
[**], 

 (3) Celgene decides to exercise its Celgene Program Option or to take a
license early pursuant to Section 3.6(c) or Section 15.5, as applicable, to a Discovery Program under which a Development Candidate had been nominated by Agios prior to such early exercise, 

(4) Celgene exercises its right pursuant to Section 14.2(a) to terminate for convenience any Discovery Program under
which a Development Candidate had been nominated by Agios prior to such termination and the JRC has not determined that such Development Candidate does not meet the Clinical Candidate Guidelines (as described in Section 3.6(b)(v)), or

 (5) Celgene terminates a Discovery Program for convenience within the [**] period prior to when a Development
Candidate would have been nominated by Agios under such Discovery Program (as contemplated under the Discovery Plan); provided that the lead optimization chemical series in the Discovery Program related to such Target has demonstrated [**],
then, in each of the foregoing cases, such nominated (or would-be nominated, as applicable) Development Candidate shall be counted as a Development Candidate that has been confirmed by the JRC as meeting the Clinical Candidate Guidelines for
purposes of determining whether Agios has met its obligation under this Section 3.3(b) to nominate at least [**] Development Candidates that the JRC confirms meet the Clinical Candidate Guidelines. 

(c) Second Extension Option. Celgene shall have the right to elect to extend the Option Term beyond the First
Extension Phase (“Second Extension Option”) for an additional [**] months following the end of the First Extension Phase (“Second Extension Phase”). Celgene may exercise the Second Extension Option by
(i) providing written notice to Agios of such election, and (ii) paying to Agios [**] Dollars (US$[**]) within [**] days following the end of the First Extension Phase. Such written notice shall be provided at least [**] months
prior to the end of the First Extension Phase (or within [**] days following the Second Extension Option Trigger Event, as applicable); provided that, if the Parties enter into the Extended Initial Phase and such Extended Initial Phase
continues until [**] following the end of the original Initial Phase, then such notice need not be provided until at least [**] months prior to the end of the First Extension Phase. 

(d) Option Term. The “Option Term” shall refer to the period commencing on the Effective Date and
ending upon the earliest of (i) the expiration of the Initial Phase (or Extended Initial Phase, if applicable), if Celgene does not exercise the First Extension Option; (ii) the expiration of the First Extension Phase, if Celgene exercises
the First Extension Option but does not exercise the Second Extension Option; and (iii) the expiration 

 
of the Second Extension Phase, if Celgene exercises the Second Extension Option; provided that, notwithstanding the foregoing, if on the date of the events described in the foregoing
clauses (i), (ii), and (iii), DC Selection Stage for a Development Candidate has been reached pursuant to Section 3.6(b)(ii) during the Option Term and the Celgene Program Option for such Development Candidate has not expired or been rejected,
waived or not exercised within the applicable exercise period, then Celgene’s right to exercise such Celgene Program Option will continue for such Development Candidate (and associated Discovery Program) beyond the end of the Option Term as set
forth in Section 3.6 until such Celgene Program Option has been exercised or been rejected or waived (such extended period, the “Post-Option Extension,” and the Discovery Program associated with such Development Candidate, the
“Extended Program”). For purposes of clarity, except as provided in the proviso in the prior sentence or in Section 3.3(b)(iii), if Celgene does not provide written notice of election to Agios in a timely manner, the Option
Term shall expire as of the end of the then-current Initial Phase (or Extended Initial Phase, if applicable), First Extension Phase or Second Extension Phase, as the case may be. 

2. Second Amendment Payment. Article IX of the Agreement is hereby amended to include a new Section 9.1A as follows:

 Section 9.1A Second Amendment Payment. In consideration of Agios’ performance of its
obligation under the Collaboration during the period commencing three (3) years following the Effective Date and ending four (4) years following the Effective Date pursuant to the Second Amendment to this Agreement, Celgene shall make a
nonrefundable payment to Agios of Twenty Million Dollars (US$20,000,000) within [**] days following the effective date of the Second Amendment to this Agreement. 
 3. Incorporation. Article 15 of the Agreement is hereby incorporated mutatis mutandis into this Amendment. 
 4. Effect on Agreement. Except as specifically amended by this Second Amendment, the Agreement will remain in full force and effect and is hereby ratified and confirmed. To the extent
a conflict arises between the terms of the Agreement and this Second Amendment, the terms of this Second Amendment shall prevail but only to the extent necessary to accomplish their intended purpose. 

[Remainder of Page Intentionally Left Blank] 

 IN WITNESS WHEREOF, the Parties have executed this Second Amendment as of the Second Amendment Effective
Date. 
  

			
	AGIOS PHARMACEUTICALS, INC.
		
	By:	 	 /s/ David Schenkein

	Title: CEO
	
	CELGENE CORPORATION
		
	By:	 	 /s/ Robert J. Hugin

	Title: CEO
	
	CELGENE CORPORATION
		
	By:	 	 /s/ Robert J. Hugin

	Title: CEO
	
	CELGENE LEGAL
	
	 /s/ John [illegible]

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