Document:

Form of Nonstatutory Stock Option Agreement

 Exhibit 10.34 
 INFINITY PHARMACEUTICALS, INC. 
 Nonstatutory Stock Option Agreement  
 Granted Under 2000 Stock Incentive Plan, as amended 
  

	1.	Grant of Option. 

 This agreement evidences the
grant by Infinity Pharmaceuticals, Inc., a Delaware corporation (the “Company”), on [            ], 200[ ] (the “Grant Date”) to
[                    ], an [employee], [consultant], [director] of the Company (the “Participant”), of an option to purchase,
in whole or in part, on the terms provided herein and in the Company’s 2000 Stock Incentive Plan, as amended (the “Plan”), a total of
[                    ] shares (the “Shares”) of common stock, $0.001 par value per share, of the Company (“Common
Stock”) at $[            ] per Share. Unless earlier terminated, this option shall expire at 5:00 p.m., Eastern time, on
[                    ] (the “Final Exercise Date”). 
 It is intended that the option evidenced by this agreement shall not be an incentive stock option as defined in Section 422 of the Internal Revenue Code of 1986, as amended, and any regulations promulgated
thereunder (the “Code”). Except as otherwise indicated by the context, the term “Participant”, as used in this option, shall be deemed to include any person who acquires the right to exercise this option validly under its terms.

  

	2.	Vesting Schedule. 

 This option will become
exercisable (“vest”) as to         % of the original number of Shares on the [first] anniversary of the Grant Date and as to an additional
        % of the original number of Shares at the end of each successive [three-month] period following the first anniversary of the Grant Date until the [fourth] anniversary of the Grant Date.

 The right of exercise shall be cumulative so that to the extent the option is not exercised in any period to the maximum extent
permissible it shall continue to be exercisable, in whole or in part, with respect to all Shares for which it is vested until the earlier of the Final Exercise Date or the termination of this option under Section 3 hereof or the Plan.

  

	3.	Exercise of Option. 

 (a) Form of Exercise.
Each election to exercise this option shall be in writing in the form attached to this Agreement as Exhibit A, signed by the Participant, and received by the Company at its principal office, accompanied by this agreement, and payment in
full in the manner provided in the Plan. The Participant may purchase less than the number of shares covered hereby, provided that no partial exercise of this option may be for any fractional share. 
 (b) Continuous Relationship with the Company Required. Except as otherwise provided in this Section 3, this option may not be exercised
unless the Participant, at the time he or she exercises this option, is, and has been at all times since the Grant Date, an employee, officer or director of, or consultant or advisor to, the Company or any other entity the employees, 

 
officers, directors, consultants, or advisors of which are eligible to receive option grants under the Plan (an “Eligible Participant”).

 (c) Termination of Relationship with the Company. If the Participant ceases to be an Eligible Participant for any reason, then,
except as provided in paragraphs (d) and (e) below, the right to exercise this option shall terminate three months after such cessation (but in no event after the Final Exercise Date), provided that this option shall be
exercisable only to the extent that the Participant was entitled to exercise this option on the date of such cessation. Notwithstanding the foregoing, if the Participant, prior to the Final Exercise Date, violates the non-competition or
confidentiality provisions of any employment contract, confidentiality and nondisclosure agreement or other agreement between the Participant and the Company, the right to exercise this option shall terminate immediately upon such violation.

 (d) Exercise Period Upon Death or Disability. If the Participant dies or becomes disabled (within the meaning of
Section 22(e)(3) of the Code) prior to the Final Exercise Date while he or she is an Eligible Participant and the Company has not terminated such relationship for “cause” as specified in paragraph (e) below, this option shall be
exercisable, within the period of one year following the date of death or disability of the Participant, by the Participant (or in the case of death by an authorized transferee), provided that this option shall be exercisable only to
the extent that this option was exercisable by the Participant on the date of his or her death or disability, and further provided that this option shall not be exercisable after the Final Exercise Date. 
 (e) Termination for Cause. If, prior to the Final Exercise Date, the Participant’s employment or other relationship with the Company is
terminated by the Company for Cause (as defined below), the right to exercise this option shall terminate immediately upon the effective date of such termination of employment or other relationship. If the Participant is party to an employment,
consulting or severance agreement with the Company that contains a definition of “cause” for termination of employment or other relationship, “Cause” shall have the meaning ascribed to such term in such agreement. Otherwise,
“Cause” shall mean willful misconduct by the Participant or willful failure by the Participant to perform his or her responsibilities to the Company (including, without limitation, breach by the Participant of any provision of any
employment, consulting, advisory, nondisclosure, non-competition or other similar agreement between the Participant and the Company), as determined by the Company, which determination shall be conclusive. The Participant shall be considered to have
been discharged for “Cause” if the Company determines, within 30 days after the Participant’s resignation, that discharge for cause was warranted. 
  

	4.	Withholding. 

 No Shares will be issued pursuant to
the exercise of this option unless and until the Participant pays to the Company, or makes provision satisfactory to the Company for payment of, any federal, state or local withholding taxes required by law to be withheld in respect of this option.

  

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	5.	Nontransferability of Option. 

 This option may not
be sold, assigned, transferred, pledged or otherwise encumbered by the Participant, either voluntarily or by operation of law, except by will or the laws of descent and distribution, and, during the lifetime of the Participant, this option shall be
exercisable only by the Participant. 
  

	6.	Provisions of the Plan. 

 This option is subject to
the provisions of the Plan, a copy of which is furnished to the Participant with this option. 
 IN WITNESS WHEREOF, the Company has caused
this option to be executed under its corporate seal by its duly authorized officer. This option shall take effect as a sealed instrument. 
  

							
		 	 INFINITY PHARMACEUTICALS, INC.

			
	Dated:  _______________	 	 By:
	 	  
		 		 	 Name:
	 	  
		 		 	 Title:
	 	  

  

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 PARTICIPANT’S ACCEPTANCE 
 The undersigned hereby accepts the foregoing option and agrees to the terms and conditions thereof. The undersigned hereby acknowledges receipt of a copy
of the Company’s 2000 Stock Incentive Plan, as amended. 
  

			
	PARTICIPANT:
	
	  
		
	Address:	 	  
		
		 	  

  

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 Exhibit A 
 NOTICE OF STOCK OPTION EXERCISE 
 Date: ____________ 
 Infinity Pharmaceuticals, Inc. 
 780 Memorial Drive 
 Cambridge, MA 02139 
 Attention: Treasurer

 Dear Sir or Madam: 
 I am the holder of Nonstatutory Stock Option granted to me under the Infinity Pharmaceuticals, Inc. (the “Company”) 2000 Stock Incentive Plan, as amended, on __________ for the purchase of __________ shares of Common Stock of the
Company at a purchase price of $__________ per share. 
 I hereby exercise my option to purchase _________ shares of Common Stock (the
“Shares”), for which I have enclosed __________ in the amount of ________. Please register my stock certificate as follows: 
  

			
	Name(s):	  	________________________________
		
		  	________________________________
		
	Address:	  	________________________________
		
	Tax I.D. #:	  	________________________________

  

	
	Very truly yours,
	
	   
	(Signature)

  

 -5-Form of Restricted Stock Agreement

 Exhibit 10.35 
 Restricted Stock Agreement  
 Granted Under 2000 Stock Incentive Plan, as amended 
 AGREEMENT made this         day of
                    , 200[ ], between Infinity Pharmaceuticals, Inc., a Delaware corporation (the “Company”), and
________________________ (the “Participant”). 
 For valuable consideration, receipt of which is acknowledged, the parties hereto
agree as follows: 
  

	 	1.	Purchase of Shares. 

 The Company shall issue and
sell to the Participant, and the Participant shall purchase from the Company, subject to the terms and conditions set forth in this Agreement and in the Company’s 2000 Stock Incentive Plan, as amended (the “Plan”),
[            ] shares (the “Shares”) of common stock, $0.001 par value, of the Company (“Common Stock”), at a purchase price of
$[            ] per share. The aggregate purchase price for the Shares shall be paid by the Participant by check payable to the order of the Company or such other method as may be
acceptable to the Company. Upon receipt by the Company of payment for the Shares, the Company shall issue to the Participant one or more certificates in the name of the Participant for that number of Shares purchased by the Participant. The
Participant agrees that the Shares shall be subject to the purchase option set forth in Section 2 of this Agreement and the restrictions on transfer set forth in Section 4 of this Agreement. 
  

	 	2.	Purchase Option. 

 (a) In the event
that the Participant ceases to be employed by the Company for any reason or no reason, with or without cause, prior to [            ], the Company shall have the right and option
(the “Purchase Option”) to purchase from the Participant, for a sum of $[            ] per share (the “Option Price”), some or all of the Unvested Shares (as
defined below). 
 “Unvested Shares” means the total number of Shares multiplied by the Applicable Percentage at the time the
Purchase Option becomes exercisable by the Company. The “Applicable Percentage” shall be (i) 100% during the 12-month period ending
                    , 200_, (ii) [75%] less [6.25%] for each three months of employment completed by the Participant with the Company
from and after                     , 200_, and (iii) zero on or after
                    , 200__. 
 (b) In the event that the Participant’s employment with the Company is terminated by reason of death or disability, the number of the Shares for which the Purchase Option becomes exercisable shall be
                     percent (__%) of the number of Unvested Shares for which the Purchase Option would otherwise become exercisable. For this
purpose, “disability” shall mean the inability of the Participant, due to a medical reason, to carry out his duties as an employee of the Company for a period of six consecutive months. 
 (c) If the Participant is employed by a parent or subsidiary of the Company, any references in this Agreement to employment with the
Company or termination of employment by or with the Company shall instead be deemed to refer to such parent or subsidiary. 

	 	3.	Exercise of Purchase Option and Closing. 

 (a) The Company may exercise the Purchase Option by delivering or mailing to the Participant (or his estate), within 90 days after the termination of the employment of the Participant with the Company, a written notice of exercise of the
Purchase Option. Such notice shall specify the number of Shares to be purchased. If and to the extent the Purchase Option is not so exercised by the giving of such a notice within such 90-day period, the Purchase Option shall automatically expire
and terminate effective upon the expiration of such 90-day period. 
 (b) Within 10 days after delivery to the Participant of
the Company’s notice of the exercise of the Purchase Option pursuant to subsection (a) above, the Participant (or his estate) shall, pursuant to the provisions of the Joint Escrow Instructions referred to in Section 5 below, tender to
the Company at its principal offices the certificate or certificates representing the Shares which the Company has elected to purchase in accordance with the terms of this Agreement, duly endorsed in blank or with duly endorsed stock powers attached
thereto, all in form suitable for the transfer of such Shares to the Company. Promptly following its receipt of such certificate or certificates, the Company shall pay to the Participant the aggregate Option Price for such Shares (provided that any
delay in making such payment shall not invalidate the Company’s exercise of the Purchase Option with respect to such Shares). 
 (c) After the time at which any Shares are required to be delivered to the Company for transfer to the Company pursuant to subsection (b) above, the Company shall not pay any dividend to the Participant on account of such Shares or
permit the Participant to exercise any of the privileges or rights of a stockholder with respect to such Shares, but shall, in so far as permitted by law, treat the Company as the owner of such Shares. 
 (d) The Option Price may be payable, at the option of the Company, in cancellation of all or a portion of any outstanding indebtedness of
the Participant to the Company or in cash (by check) or both. 
 (e) The Company shall not purchase any fraction of a Share
upon exercise of the Purchase Option, and any fraction of a Share resulting from a computation made pursuant to Section 2 of this Agreement shall be rounded to the nearest whole Share (with any one-half Share being rounded upward). 

(f) The Company may assign its Purchase Option to one or more persons or entities. 
  

	 	4.	Restrictions on Transfer. 

 (a) The
Participant shall not sell, assign, transfer, pledge, hypothecate or otherwise dispose of, by operation of law or otherwise (collectively “transfer”) any Shares, or any interest therein, that are subject to the Purchase Option, except that
the Participant may transfer such Shares (i) to or for the benefit of any spouse, domestic partner sharing the same household as the Participant, children, parents, uncles, aunts, siblings, grandchildren and any other relatives approved by the
Board of Directors (collectively, “Approved Relatives”) or to a trust established solely for the benefit of the Participant and/or Approved Relatives, provided that 

  

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such Shares shall remain subject to this Agreement (including without limitation the restrictions on transfer set forth in this Section 4 and the
Purchase Option) and such permitted transferee shall, as a condition to such transfer, deliver to the Company a written instrument confirming that such transferee shall be bound by all of the terms and conditions of this Agreement or (ii) as
part of the sale of all or substantially all of the shares of capital stock of the Company (including pursuant to a merger or consolidation), provided that, in accordance with the Plan, the securities or other property received by the
Participant in connection with such transaction shall remain subject to this Agreement. 
 (b) The Participant shall not
transfer any Shares, or any interest therein, that are no longer subject to the Purchase Option. 
  

	 	5.	Escrow. 

 The Participant shall, upon the execution
of this Agreement, execute Joint Escrow Instructions in the form attached to this Agreement as Exhibit A. The Joint Escrow Instructions shall be delivered to the Secretary of the Company, as escrow agent thereunder. The Participant shall
deliver to such escrow agent a stock assignment duly endorsed in blank, in the form attached to this Agreement as Exhibit B, and hereby instructs the Company to deliver to such escrow agent, on behalf of the Participant, the certificate(s)
evidencing the Shares issued hereunder. Such materials shall be held by such escrow agent pursuant to the terms of such Joint Escrow Instructions. 
  

	 	6.	Restrictive Legends. 

 All certificates representing
Shares shall have affixed thereto legends in substantially the following form, in addition to any other legends that may be required under federal or state securities laws: 
 “The shares of stock represented by this certificate are subject to restrictions on transfer and an option to purchase set forth in a certain
Restricted Stock Agreement between the corporation and the registered owner of these shares (or his predecessor in interest), and such Agreement is available for inspection without charge at the office of the Secretary of the corporation.”

  

	 	7.	Provisions of the Plan. 

 (a) This
Agreement is subject to the provisions of the Plan, a copy of which is furnished to the Participant with this Agreement. 
 (b) As provided in the Plan, upon the occurrence of a Change in Control (as defined in the Plan), the repurchase and other rights of the Company hereunder shall inure to the benefit of the Company’s successor and shall apply to the
cash, securities or other property which the Shares were converted into or exchanged for pursuant to such Change in Control in the same manner and to the same extent as they applied to the Shares under this Agreement. If, in connection with a Change
in Control, a portion of the cash, securities and/or other property 

  

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received upon the conversion or exchange of the Shares is to be placed into escrow to secure indemnification or similar obligations, the mix between the
vested and unvested portion of such cash, securities and/or other property that is placed into escrow shall be the same as the mix between the vested and unvested portion of such cash, securities and/or other property that is not subject to escrow.

  

	 	8.	Withholding Taxes; Section 83(b) Election. 

 (a) The Participant acknowledges and agrees that the Company has the right to deduct from payments of any kind otherwise due to the Participant any federal, state or local taxes of any kind required by law to be
withheld with respect to the purchase of the Shares by the Participant or the lapse of the Purchase Option. 
 (b) The
Participant has reviewed with the Participant’s own tax advisors the federal, state, local and foreign tax consequences of this investment and the transactions contemplated by this Agreement. The Participant is relying solely on such advisors
and not on any statements or representations of the Company or any of its agents. The Participant understands that the Participant (and not the Company) shall be responsible for the Participant’s own tax liability that may arise as a result of
this investment or the transactions contemplated by this Agreement. The Participant understands that it may be beneficial in many circumstances to elect to be taxed at the time the Shares are purchased rather than when and as the Company’s
Purchase Option expires by filing an election under Section 83(b) of the Internal Revenue Code of 1986 with the I.R.S. within 30 days from the date of purchase. 
 THE PARTICIPANT ACKNOWLEDGES THAT IT IS SOLELY THE PARTICIPANT’S RESPONSIBILITY AND NOT THE COMPANY’S TO FILE TIMELY THE
ELECTION UNDER SECTION 83(b), EVEN IF THE PARTICIPANT REQUESTS THE COMPANY OR ITS REPRESENTATIVES TO MAKE THIS FILING ON THE PARTICIPANT’S BEHALF. 
  

	 	9.	Miscellaneous. 

 (a) No Rights to
Employment. The Participant acknowledges and agrees that the vesting of the Shares pursuant to Section 2 hereof is earned only by continuing service as an employee at the will of the Company (not through the act of being hired or purchasing
shares hereunder). The Participant further acknowledges and agrees that the transactions contemplated hereunder and the vesting schedule set forth herein do not constitute an express or implied promise of continued engagement as an employee or
consultant for the vesting period, for any period, or at all. 
 (b) Severability. The invalidity or unenforceability
of any provision of this Agreement shall not affect the validity or enforceability of any other provision of this Agreement, and each other provision of this Agreement shall be severable and enforceable to the extent permitted by law. 
  

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 (c) Waiver. Any provision for the benefit of the Company contained in this
Agreement may be waived, either generally or in any particular instance, by the Board of Directors of the Company. 
 (d)
Binding Effect. This Agreement shall be binding upon and inure to the benefit of the Company and the Participant and their respective heirs, executors, administrators, legal representatives, successors and assigns, subject to the restrictions
on transfer set forth in Section 4 of this Agreement. 
 (e) Notice. All notices required or permitted hereunder
shall be in writing and deemed effectively given upon personal delivery or five days after deposit in the United States Post Office, by registered or certified mail, postage prepaid, addressed to the other party hereto at the address shown beneath
his or its respective signature to this Agreement, or at such other address or addresses as either party shall designate to the other in accordance with this Section 12(e). 
 (f) Pronouns. Whenever the context may require, any pronouns used in this Agreement shall include the corresponding masculine,
feminine or neuter forms, and the singular form of nouns and pronouns shall include the plural, and vice versa. 
 (g)
Entire Agreement. This Agreement and the Plan constitute the entire agreement between the parties, and supersedes all prior agreements and understandings, relating to the subject matter of this Agreement. 
 (h) Amendment. This Agreement may be amended or modified only by a written instrument executed by both the Company and the
Participant. 
 (i) Governing Law. This Agreement shall be construed, interpreted and enforced in accordance with the
internal laws of the State of Delaware without regard to any applicable conflicts of laws. 
 (j) Participant’s
Acknowledgments. The Participant acknowledges that he or she: (i) has read this Agreement; (ii) has been represented in the preparation, negotiation, and execution of this Agreement by legal counsel of the Participant’s own choice
or has voluntarily declined to seek such counsel; (iii) understands the terms and consequences of this Agreement; (iv) is fully aware of the legal and binding effect of this Agreement; and (v) understands that the law firm of
WilmerHale, is acting as counsel to the Company in connection with the transactions contemplated by the Agreement, and is not acting as counsel for the Participant. 
  

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 IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the day and year first above
written. 
  

			
	INFINITY PHARMACEUTICALS, INC.
		
	By:	 	  

			
	Title:	 	  

			
	Address:	 	  
		 	  
	
	  
	[Name of Participant]
	Address:	 	  
		 	  

  

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 Exhibit A 
 INFINITY PHARMACEUTICALS, INC. 
 Joint Escrow Instructions 
 _________, [    ] 
 Infinity Pharmaceuticals, Inc. 
 780 Memorial Drive 
 Cambridge, MA 02139 
 Attention: Treasurer 
 Dear Sir or Madam: 
 As Escrow Agent for Infinity Pharmaceuticals, Inc., a Delaware corporation, and its successors in interest under the Restricted Stock Agreement (the
“Agreement”) of even date herewith, to which a copy of these Joint Escrow Instructions is attached (the “Company”), and the undersigned person (“Holder”), you are hereby authorized and directed to hold the documents
delivered to you pursuant to the terms of the Agreement in accordance with the following instructions: 
 1. Appointment. Holder
irrevocably authorizes the Company to deposit with you any certificates evidencing Shares (as defined in the Agreement) to be held by you hereunder and any additions and substitutions to said Shares. For purposes of these Joint Escrow Instructions,
“Shares” shall be deemed to include any additional or substitute property. Holder does hereby irrevocably constitute and appoint you as his attorney-in-fact and agent for the term of this escrow to execute with respect to such Shares all
documents necessary or appropriate to make such Shares negotiable and to complete any transaction herein contemplated. Subject to the provisions of this Section 1 and the terms of the Agreement, Holder shall exercise all rights and privileges
of a stockholder of the Company while the Shares are held by you. 
 2. Closing of Purchase. 
 (a) Upon any purchase by the Company of the Shares pursuant to the Agreement, the Company shall give to Holder and you a written notice
specifying the number of Shares to be purchased, the purchase price for the Shares, as determined pursuant to the Agreement, and the time for a closing hereunder (the “Closing”) at the principal office of the Company. Holder and the
Company hereby irrevocably authorize and direct you to close the transaction contemplated by such notice in accordance with the terms of said notice. 
 (b) At the Closing, you are directed (i) to date the stock assignment form or forms necessary for the transfer of the Shares, (ii) to fill in on such form or forms the number of Shares being transferred, and
(iii) to deliver the same, together with the certificate or certificates 

  

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evidencing the Shares to be transferred, to the Company against the simultaneous delivery to you of the purchase price for the Shares being purchased
pursuant to the Agreement. 
 3. Withdrawal. The Holder shall have the right to withdraw from this escrow any Shares as to which the
Purchase Option (as defined in the Agreement) has terminated or expired. 
 4. Duties of Escrow Agent. 
 (a) Your duties hereunder may be altered, amended, modified or revoked only by a writing signed by all of the parties hereto. 

(b) You shall be obligated only for the performance of such duties as are specifically set forth herein and may rely and shall be
protected in relying or refraining from acting on any instrument reasonably believed by you to be genuine and to have been signed or presented by the proper party or parties. You shall not be personally liable for any act you may do or omit to do
hereunder as Escrow Agent or as attorney-in-fact of Holder while acting in good faith and in the exercise of your own good judgment, and any act done or omitted by you pursuant to the advice of your own attorneys shall be conclusive evidence of such
good faith. 
 (c) You are hereby expressly authorized to disregard any and all warnings given by any of the parties hereto or
by any other person or entity, excepting only orders or process of courts of law, and are hereby expressly authorized to comply with and obey orders, judgments or decrees of any court. If you are uncertain of any actions to be taken or instructions
to be followed, you may refuse to act in the absence of an order, judgment or decrees of a court. In case you obey or comply with any such order, judgment or decree of any court, you shall not be liable to any of the parties hereto or to any other
person or entity, by reason of such compliance, notwithstanding any such order, judgment or decree being subsequently reversed, modified, annulled, set aside, vacated or found to have been entered without jurisdiction. 
 (d) You shall not be liable in any respect on account of the identity, authority or rights of the parties executing or delivering or
purporting to execute or deliver the Agreement or any documents or papers deposited or called for hereunder. 
 (e) You shall
be entitled to employ such legal counsel and other experts as you may deem necessary properly to advise you in connection with your obligations hereunder and may rely upon the advice of such counsel. 
 (f) Your rights and responsibilities as Escrow Agent hereunder shall terminate if (i) you cease to be Secretary of the Company or
(ii) you resign by written notice to each party. In the event of a termination under clause (i), your successor as Secretary shall become Escrow Agent hereunder; in the event of a termination under clause (ii), the Company shall
appoint a successor Escrow Agent hereunder. 
 (g) If you reasonably require other or further instruments in connection with
these Joint Escrow Instructions or obligations in respect hereto, the necessary parties hereto shall join in furnishing such instruments. 
  

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 (h) It is understood and agreed that if you believe a dispute has arisen with respect to
the delivery and/or ownership or right of possession of the securities held by you hereunder, you are authorized and directed to retain in your possession without liability to anyone all or any part of said securities until such dispute shall have
been settled either by mutual written agreement of the parties concerned or by a final order, decree or judgment of a court of competent jurisdiction after the time for appeal has expired and no appeal has been perfected, but you shall be under no
duty whatsoever to institute or defend any such proceedings. 
 (i) These Joint Escrow Instructions set forth your sole duties
with respect to any and all matters pertinent hereto and no implied duties or obligations shall be read into these Joint Escrow Instructions against you. 
 (j) The Company shall indemnify you and hold you harmless against any and all damages, losses, liabilities, costs, and expenses, including attorneys’ fees and disbursements, (including without limitation the fees
of counsel retained pursuant to Section 4(e) above, for anything done or omitted to be done by you as Escrow Agent in connection with this Agreement or the performance of your duties hereunder, except such as shall result from your gross
negligence or willful misconduct. 
 5. Notice. Any notice required or permitted hereunder shall be given in writing and shall be
deemed effectively given upon personal delivery or upon deposit in the United States Post Office, by registered or certified mail with postage and fees prepaid, addressed to each of the other parties thereunto entitled at the following addresses, or
at such other addresses as a party may designate by ten days’ advance written notice to each of the other parties hereto. 
  

			
	 COMPANY:
	  	Notices to the Company shall be sent to the address set forth in the salutation hereto, Attn: Chief Executive Officer
		
	 HOLDER:
	  	Notices to Holder shall be sent to the address set forth below Holder’s signature below.
		
	 ESCROW AGENT:
	  	Notices to the Escrow Agent shall be sent to the address set forth in the salutation hereto.

  

	 	6.	Miscellaneous. 

 (a) By signing
these Joint Escrow Instructions, you become a party hereto only for the purpose of said Joint Escrow Instructions, and you do not become a party to the Agreement. 
 (b) This instrument shall be binding upon and inure to the benefit of the parties hereto and their respective successors and permitted
assigns. 
  

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	Very truly yours,
	
	INFINITY PHARMACEUTICALS, INC.
		
	 By:
	 	  
	Title:	 	  

			
	
	 HOLDER:

	
	  
	(Signature)
	
	  
	Print Name
		
	 Address:
	 	  
		 	  

			
		
	 Date Signed:
	 	  

  

	
	ESCROW AGENT:
	   

  

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 Exhibit B 
 (STOCK ASSIGNMENT SEPARATE FROM CERTIFICATE) 
 FOR VALUE RECEIVED, I hereby sell, assign and
transfer unto __________________ (                    ) shares of Common Stock, $0.001 par value per share, of Infinity Pharmaceuticals, Inc.
(the “Corporation”) standing in my name on the books of the Corporation represented by Certificate(s) Number __________ herewith, and do hereby irrevocably constitute and appoint ______________________ attorney to transfer the said stock
on the books of the Corporation with full power of substitution in the premises. 
  

									
		 		 	Dated: ____________________
				
	IN PRESENCE OF	 		 		 	  
					
		 		 		 		 	  

 NOTICE: The signature(s) to this assignment must correspond with the name as written upon the face
of the certificate, in every particular, without alteration, enlargement, or any change whatever and must be guaranteed by a commercial bank, trust company or member firm of the Boston, New York or Midwest Stock Exchange. 
  

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