Document:

EX-10.2.2

 Exhibit 10.2.2 

NEXIMMUNE, INC. 

Stock Option Grant Notice 

Stock Option Grant under the Company’s 

2017 Equity Incentive Plan 
  

					
	1.	  	Name and Address of Participant:	  	              

			
		  		  	              

			
		  		  	              

			
	2.	  	Date of Option Grant:	  	              

			
	3.	  	Type of Grant:	  	__ Incentive Stock Option
		  		  	__ Non-Qualified Stock Option
			
	4.	  	Maximum Number of Shares for which this Option is exercisable:	  	              

			
	5.	  	Exercise (purchase) price per share:	  	              

			
	6.	  	Option Expiration Date:	  	              

			
	7.	  	Vesting Start Date:	  	              

		
	8.	  	Vesting Schedule: This Option shall become exercisable (and the Shares issued upon exercise shall be vested) as follows provided the Participant is an Employee, director, or Consultant of the Company or of an Affiliate
on the applicable vesting date:

 [ADJUST AS NECESSARY PER PARTICIPANT VESTING SCHEDULE. MINIMUMS SET FORTH BELOW.] 

[On the first anniversary of the Vesting Start Date ____________ Shares [1/4 of Shares] shall vest. Thereafter, Shares shall vest on a monthly
basis with _________ Shares [1/36 of Shares] vesting per month on the monthly anniversary of the Vesting Start Date. Provided the Participant is an Employee, director, or Consultant of the Company or of an Affiliate on the applicable vesting date,
all Shares shall be vested in full on the fourth anniversary of the Vesting Start Date.] To the extent that the vesting schedule results in the vesting of a fractional Share, the number of Shares that vest on the particular date will be rounded down
to the nearest whole Share and such fraction of a Share shall vest on the last vesting date. 

  
 1. 

 The foregoing rights are cumulative and are subject to the other terms and conditions of
this Agreement and the Company’s 2017 Equity Incentive Plan. 
 The Company and the Participant acknowledge receipt of this Stock
Option Grant Notice and agree to the terms of the Stock Option Agreement attached hereto and incorporated by reference herein, the Company’s 2017 Equity Incentive Plan and the terms of this Option Grant as set forth above. 

 

			
	NEXIMMUNE, INC.
		
	By:	 	              

		 	Name:
		 	Title:
	
	              

	Participant

  
 2. 

 NEXIMMUNE, INC. 

2017 EQUITY INCENTIVE PLAN 

OPTION AGREEMENT 

(INCENTIVE STOCK OPTION OR NONSTATUTORY STOCK
OPTION) 
 Pursuant to your Stock Option Grant Notice (“Grant Notice”) and this Option Agreement,
NexImmune, Inc., a Delaware corporation (the “Company”) has granted you an option under its 2017 Equity Incentive Plan (the “Plan”) to purchase the number of shares of the Company’s Common Stock
indicated in your Grant Notice at the exercise price indicated in your Grant Notice. Defined terms not explicitly defined in this Option Agreement but defined in the Plan will have the same definitions as in the Plan. 

The details of your option are as follows: 

1. VESTING. Subject to the limitations contained in this Option Agreement, your
option will vest as provided in your Grant Notice, provided that vesting will cease upon the termination of your Continuous Service. 
 2.
NUMBER OF SHARES AND EXERCISE PRICE. The number of shares of Common Stock subject to your option and your exercise
price per share referenced in your Grant Notice may be adjusted from time to time for Capitalization Adjustments. 
 3.
EXERCISE RESTRICTION FOR NON-EXEMPT EMPLOYEES. In the event that you are an
Employee eligible for overtime compensation under the Fair Labor Standards Act of 1938, as amended (i.e., a “Non-Exempt Employee”), you may not exercise your option until you
have completed at least six (6) months of Continuous Service measured from the Date of Grant specified in your Grant Notice, notwithstanding any other provision of your option. 

4. EXERCISE PRIOR TO VESTING (“EARLY
EXERCISE”). If permitted in your Grant Notice (i.e., the “Exercise Schedule” indicates “Early Exercise Permitted”) and subject to the provisions of your option, you
may elect at any time that is both (i) during the period of your Continuous Service and (ii) during the term of your option, to exercise all or part of your option, including the unvested portion of your option; provided,
however, that: 
 (a) a partial exercise of your option will be deemed to cover first vested shares of Common Stock and then
the earliest vesting installment of unvested shares of Common Stock; 
 (b) any shares of Common Stock so purchased from installments
that have not vested as of the date of exercise will be subject to the purchase option in favor of the Company as described in the Company’s form of Early Exercise Stock Purchase Agreement; 

(c) you will enter into the Company’s form of Early Exercise Stock Purchase Agreement with a vesting schedule that will result in
the same vesting as if no early exercise had occurred; and 

  
 3. 

 (d) if your option is an Incentive Stock Option, then, to the extent that the
aggregate Fair Market Value (determined at the time of grant) of the shares of Common Stock with respect to which your option plus all other Incentive Stock Options you hold are exercisable for the first time by you during any calendar year (under
all plans of the Company and its Affiliates) exceeds one hundred thousand dollars ($100,000), your option(s) or portions thereof that exceed such limit (according to the order in which they were granted) will be treated as Nonstatutory Stock
Options. 
 5. METHOD OF PAYMENT. Payment of the
exercise price is due in full upon exercise of all or any part of your option. You may elect to make payment of the exercise price in cash or by check or in any other manner permitted by your Grant Notice, which may include one or more
of the following: 
 (a) Provided that at the time of exercise the Common Stock is publicly traded and quoted regularly in The Wall
Street Journal, pursuant to a program developed under Regulation T as promulgated by the Federal Reserve Board that, prior to the issuance of Common Stock, results in either the receipt of cash (or check) by the Company or the receipt of
irrevocable instructions to pay the aggregate exercise price to the Company from the sales proceeds. 
 (b) Provided that at the time
of exercise the Common Stock is publicly traded and quoted regularly in The Wall Street Journal, by delivery to the Company (either by actual delivery or attestation) of already-owned shares of Common Stock that are owned free and clear of
any liens, claims, encumbrances or security interests, and that are valued at Fair Market Value on the date of exercise. Notwithstanding the foregoing, you may not exercise your option by tender to the Company of Common Stock to the extent such
tender would violate the provisions of any law, regulation or agreement restricting the redemption of the Company’s stock. 
 6.
WHOLE SHARES. You may exercise your option only for whole shares of Common Stock. 

7. SECURITIES LAW COMPLIANCE. Notwithstanding anything
to the contrary contained in this Option Agreement, you may not exercise your option unless the shares of Common Stock issuable upon such exercise are then registered under the Securities Act or, if such shares of Common Stock are not then so
registered, the Company has determined that such exercise and issuance would be exempt from the registration requirements of the Securities Act. The exercise of your option also must comply with other applicable laws and regulations governing your
option, and you may not exercise your option if the Company determines that such exercise would not be in material compliance with such laws and regulations. 

8. TERM. You may not exercise your option before the commencement or after the expiration of its term. The term of
your option commences on the Date of Grant and expires upon the earliest of the following: 
 (a) immediately upon the termination of
your Continuous Service for Cause; 
 (b) three (3) months after the termination of your Continuous Service for any reason other
than Cause or your Disability or death, provided that if during any part of such three (3) month period your option is not exercisable solely because of the condition set forth in the section above relating to “Securities Law
Compliance,” your option will not expire until the earlier of the Expiration Date or until it will have been exercisable for an aggregate period of three (3) months after the termination of your Continuous Service; 

  
 4. 

 (c) twelve (12) months after the termination of your Continuous Service due to
your Disability; 
 (d) eighteen (18) months after your death if you die either during your Continuous Service or within three
(3) months after your Continuous Service terminates; 
 (e) the Expiration Date indicated in your Grant Notice; or 

(f) the day before the tenth (10th) anniversary of the Date of Grant. 

If your option is an Incentive Stock Option, note that to obtain the federal income tax advantages associated with an Incentive Stock Option,
the Code requires that at all times beginning on the date of grant of your option and ending on the day three (3) months before the date of your option’s exercise, you must be an employee of the Company or an Affiliate, except in the event
of your death or your permanent and total disability, as defined in Section 22(e)(3) of the Code. (The definition of disability in Section 22(e)(3) of the Code is different from the definition of the Disability under the Plan). The Company
has provided for extended exercisability of your option under certain circumstances for your benefit but cannot guarantee that your option will necessarily be treated as an Incentive Stock Option if you continue to provide services to the Company or
an Affiliate as a Consultant or Director after your employment terminates or if you otherwise exercise your option more than three (3) months after the date your employment with the Company or an Affiliate terminates. 

9. EXERCISE. 

(a) You may exercise the vested portion of your option (and the unvested portion of your option if your Grant Notice so permits) during
its term by delivering a Notice of Exercise (in a form designated by the Company) together with the exercise price to the Secretary of the Company, or to such other person as the Company may designate, during regular business hours, together with
such additional documents as the Company may then require. 
 (b) By exercising your option you agree that, as a condition to any
exercise of your option, the Company may require you to enter into an arrangement providing for the payment by you to the Company of any tax withholding obligation of the Company arising by reason of (1) the exercise of your option,
(2) the lapse of any substantial risk of forfeiture to which the shares of Common Stock are subject at the time of exercise, or (3) the disposition of shares of Common Stock acquired upon such exercise. 

(c) If your option is an Incentive Stock Option, by exercising your option you agree that you will notify the Company in writing within
fifteen (15) days after the date of any disposition of any of the shares of the Common Stock issued upon exercise of your option that occurs within two (2) years after the date of your option grant or within one (1) year after such
shares of Common Stock are transferred upon exercise of your option. 

  
 5. 

 (d) By exercising your option you agree that you will not sell, transfer, make any
short sale of, grant any option for the purchase of, or enter into any hedging or similar transaction with the same economic effect as a sale, any Common Stock (or other securities) of the Company held by you (i) during the 180-day period following the effective date of the Company’s first firm commitment underwritten public offering of the Common Stock registered under the Securities Act. (or such longer period, not to exceed 34
days after the expiration of the 180-day period, as the underwriters or the Company will request in order to facilitate compliance with NASD Rule 2711 or NYSE Member Rule 472 or any successor or similar rule
or regulation), and (ii) the 90-day period following the effective date of a registration statement of the Company filed under the Securities Act (or such longer period, not to exceed 34 days after the
expiration of the 90-day period, as the underwriters or the Company will request in order to facilitate compliance with NASD Rule 2711 or NYSE Member Rule 472 or any successor or similar rule or regulation,
the “Lock-Up Period”); provided, however, that nothing contained in this section will prevent the exercise of a repurchase option, if any, in favor of the Company during
the Lock-Up Period. You further agree to execute and deliver such other agreements as may be reasonably requested by the Company and/or the underwriter(s) that are consistent with the foregoing or that are
necessary to give further effect thereto. In order to enforce the foregoing covenant, the Company may impose stop-transfer instructions with respect to your shares of Common Stock until the end of such period. The underwriters of the Company’s
stock are intended third party beneficiaries of this Section 9(d) and will have the right, power and authority to enforce the provisions hereof as though they were a party hereto. 

10. TRANSFERABILITY. Your option is not transferable, except by will or by the laws
of descent and distribution, and is exercisable during your life only by you. Notwithstanding the foregoing, by delivering written notice to the Company, in a form satisfactory to the Company, you may designate a third party who, in the event of
your death, will thereafter be entitled to exercise your option. In addition, if permitted by the Company you may transfer your option to a trust if you are considered to be the sole beneficial owner (determined under Section 671 of the Code
and applicable state law) while the option is held in the trust, provided that you and the trustee enter into a transfer and other agreements required by the Company. 

11. RIGHT OF FIRST REFUSAL. Shares of Common Stock that you acquire
upon exercise of your option are subject to any right of first refusal that may be described in the Company’s bylaws in effect at such time the Company elects to exercise its right; provided, however, that if your option is an Incentive Stock
Option and the right of first refusal described in the Company’s bylaws in effect at the time the Company elects to exercise its right is more beneficial to you than the right of first refusal described in the Company’s bylaws on the Date
of Grant, then the right of first refusal described in the Company’s bylaws on the Date of Grant will apply. The Company’s right of first refusal will expire on the first date upon which any security of the Company is listed (or approved
for listing) upon notice of issuance on a national securities exchange or quotation system. 

  
 6. 

 12. RIGHT OF PURCHASE. 

(a) Subject to the “Repurchase Limitation” in Section 10(f) of the Plan, the Company will have the right to repurchase
all or any part of the shares of Common Stock you acquire pursuant to the exercise of your option. 
 (b) In addition, the Company
will have the right to repurchase all or any part of the shares of Common Stock received pursuant to the exercise of your option (a “Repurchase Right”), prior to the Listing Date as defined in the Plan, on the terms and
conditions below. 
 (c) The Company may elect (but is not obligated), prior to the Listing Date as defined in the Plan, to repurchase
all or any part of the vested and unvested shares of Common Stock you received pursuant to this option. If, from time to time, there is any dividend, split or other change in the character or amount of any of the outstanding shares of Common Stock
of the Company which are subject to the provisions of this option, then in such event any and all new, substituted or additional securities to which you are entitled by reason of your ownership or the shares of Common Stock acquired upon exercise of
this option will be immediately subject to this Repurchase Right with the same force and effect as the shares of Common Stock subject to this Repurchase Right immediately before such event. 

(d) The Company’s Repurchase Right will be exercisable only within the ninety (90) day period following a Repurchase Event, or
such longer period as may be required to avoid a charge to earnings for financial accounting purposes or as otherwise agreed to by the Company and you (“Repurchase Period”). Each of the following events will constitute a
“Repurchase Event:” 
 (i) Termination of your Continuous Service for any reason or no reason, with or
without cause, including death or Disability, in which event the Repurchase Period will commence on the date of termination of your Continuous Service (or in the case of a post-termination exercise of this option, the date of such exercise). 

(ii) You, your legal representative, or other holder of shares of Common Stock acquired upon exercise of this option attempts to sell,
exchange, transfer, pledge, or otherwise dispose of any of the shares of Common Stock without compliance with the right of first refusal provisions contained in the Company’s bylaws, if applicable, in which event the Repurchase Period will
commence on the date the Company receives actual notice of such attempted sale, exchange, transfer, pledge or other disposition. 
 (iii)
The receivership, bankruptcy, or other creditor’s proceeding regarding you or the taking of any of the shares of Common Stock by legal process, such as a levy of execution, in which event the Repurchase Period will commence on the date the
Company receives actual notice of the commencement of pendency of the receivership, bankruptcy or other creditor’s proceeding or the date of such taking, as the case may be, and the Fair Market Value of the shares of Common Stock will be
determined as of the last day of the month preceding the month in which the proceeding involved commenced or the taking occurred. 

  
 7. 

 (e) The Company will not exercise its Repurchase Right for less than all of the
shares of Common Stock without your consent, will exercise its Repurchase Right only for cash or cancellation of purchase money indebtedness for the shares of Common Stock and will give you written notice (accompanied by payment for the shares of
Common Stock) within ninety (90) calendar days after the later of the Repurchase Event or a proper purchase of shares of Common Stock following such Repurchase Event (including after any extension of the Repurchase Period to avoid a charge to
earnings for financial accounting purposes). 
 (f) The repurchase price for vested shares of Common Stock will be equal to the Fair
Market Value at the time of the Repurchase Event. The Company may repurchase unvested shares of Common Stock at a price equal to the lesser of the Fair Market Value or your exercise price for such shares of Common Stock as indicated on the Option
Grant Notice. 
 (g) To ensure that the shares of Common Stock subject to the Company’s Repurchase Right will be available for
repurchase, the Company may require you to deposit the certificate evidencing the shares of Common Stock that you purchase upon exercise of this option with an agent designated by the Company under the terms and conditions of an escrow agreement
approved by the Company. If the Company does not require such deposit as a condition of exercise of this option, the Company reserves the right at any time to require you to so deposit the certificate in escrow. As soon as practicable after the
expiration of this Repurchase Right, the agent will deliver to you the shares of Common Stock and any other property no longer subject to such restriction. In the event the shares of Common Stock and any other property held in escrow are subject to
the Company’s exercise of its Repurchase Right, the notices required to be given to you will be given to the escrow agent, and any payment required to be given to you will be given to the escrow agent. Within thirty (30) days after payment
by the Company for the shares of Common Stock, the escrow agent will deliver the shares of Common Stock that the Company has purchased to the Company and will deliver the payment received from the Company to you. 

13. OPTION NOT A SERVICE CONTRACT. Your option is not
an employment or service contract, and nothing in your option will be deemed to create in any way whatsoever any obligation on your part to continue in the employ of the Company or an Affiliate, or of the Company or an Affiliate to continue your
employment. In addition, nothing in your option will obligate the Company or an Affiliate, their respective stockholders, Boards of Directors, Officers or Employees to continue any relationship that you might have as a Director or Consultant for the
Company or an Affiliate. 
 14. WITHHOLDING OBLIGATIONS. 

(a) At the time you exercise your option, in whole or in part, or at any time thereafter as requested by the Company, you hereby
authorize withholding from payroll and any other amounts payable to you, and otherwise agree to make adequate provision for (including by means of a “cashless exercise” pursuant to a program developed under Regulation T as promulgated by
the Federal Reserve Board to the extent permitted by the Company), any sums required to satisfy the federal, state, local and foreign tax withholding obligations of the Company or an Affiliate, if any, which arise in connection with the exercise of
your option. 

  
 8. 

 (b) Upon your request and subject to approval by the Company, in its sole discretion,
and compliance with any applicable legal conditions or restrictions, the Company may withhold from fully vested shares of Common Stock otherwise issuable to you upon the exercise of your option a number of whole shares of Common Stock having a Fair
Market Value, determined by the Company as of the date of exercise, not in excess of the minimum amount of tax required to be withheld by law (or such lower amount as may be necessary to avoid classification of your option as a liability for
financial accounting purposes). If the date of determination of any tax withholding obligation is deferred to a date later than the date of exercise of your option, share withholding pursuant to the preceding sentence will not be permitted unless
you make a proper and timely election under Section 83(b) of the Code, covering the aggregate number of shares of Common Stock acquired upon such exercise with respect to which such determination is otherwise deferred, to accelerate the
determination of such tax withholding obligation to the date of exercise of your option. Notwithstanding the filing of such election, shares of Common Stock will be withheld solely from fully vested shares of Common Stock determined as of the date
of exercise of your option that are otherwise issuable to you upon such exercise. Any adverse consequences to you arising in connection with such share withholding procedure will be your sole responsibility. 

(c) You may not exercise your option unless the tax withholding obligations of the Company and/or any Affiliate are satisfied.
Accordingly, you may not be able to exercise your option when desired even though your option is vested, and the Company will have no obligation to issue a certificate for such shares of Common Stock or release such shares of Common Stock from any
escrow provided for in this Option Agreement unless such obligations are satisfied. 
 15. TAX
CONSEQUENCES. You hereby agree that the Company does not have a duty to design or administer the Plan or its other compensation programs in a manner that minimizes your tax liabilities. You will not
make any claim against the Company, or any of its Officers, Directors, Employees or Affiliates related to tax liabilities arising from your option or your other compensation. In particular, you acknowledge that this option is exempt from
Section 409A of the Code only if the exercise price per share specified in the Grant Notice is at least equal to the “fair market value” per share of the Common Stock on the Date of Grant and there is no other impermissible deferral
of compensation associated with the option. Because the Common Stock is not traded on an established securities market, the Fair Market Value is determined by the Board, perhaps in consultation with an independent valuation firm retained by the
Company. You acknowledge that there is no guarantee that the Internal Revenue Service will agree with the valuation as determined by the Board, and you will not make any claim against the Company, or any of its Officers, Directors, Employees or
Affiliates in the event that the Internal Revenue Service asserts that the valuation determined by the Board is less than the “fair market value” as subsequently determined by the Internal Revenue Service. 

16. NOTICES. Any notices provided for in your option or the Plan will be given in writing and will be deemed
effectively given upon receipt or, in the case of notices delivered by mail by the Company to you, five (5) days after deposit in the United States mail, postage prepaid, addressed to you at the last address you provided to the Company. 

  
 9. 

 17. GOVERNING PLAN DOCUMENT. Your
option is subject to all the provisions of the Plan, the provisions of which are hereby made a part of your option, and is further subject to all interpretations, amendments, rules and regulations, which may from time to time be promulgated and
adopted pursuant to the Plan. In the event of any conflict between the provisions of your option and those of the Plan, the provisions of the Plan will control. 

  
 10.EX-10.3.1

 Exhibit 10.3.1 

NEXIMMUNE, INC. 

2018 EQUITY INCENTIVE PLAN 

1. GENERAL. 
 (a)
Eligible Stock Award Recipients. The persons eligible to receive Stock Awards are Employees, Directors and Consultants. 
 (b)
Available Stock Awards. The Plan provides for the grant of the following Stock Awards: (i) Incentive Stock Options, (ii) Nonstatutory Stock Options, (iii) Restricted Stock Awards, (iv) Restricted Stock Unit Awards, and
(v) Stock Appreciation Rights. 
 (c) Purpose. The Company, by means of the Plan, seeks to secure and retain the services of the
group of persons eligible to receive Stock Awards as set forth in Section 1(a), to provide incentives for such persons to exert maximum efforts for the success of the Company and any Affiliate, and to provide a means by which such eligible
recipients may be given an opportunity to benefit from increases in value of the Common Stock through the granting of Stock Awards. 
 2.
ADMINISTRATION. 
 (a) Administration by Board. The Board will administer the Plan unless and until the Board
delegates administration of the Plan to a Committee, as provided in Section 2(c). 
 (b) Powers of Board. The Board will have the
power, subject to, and within the limitations of, the express provisions of the Plan: 
 (i) To determine from time to time
(A) which of the persons eligible under the Plan will be granted Stock Awards; (B) when and how each Stock Award will be granted; (C) what type or combination of types of Stock Award will be granted; (D) the provisions of each
Stock Award granted (which need not be identical), including the time or times when a person will be permitted to receive cash or Common Stock pursuant to a Stock Award; (E) the number of shares of Common Stock with respect to which a Stock
Award will be granted to each such person; and (F) the Fair Market Value applicable to a Stock Award. 
 (ii) To construe and
interpret the Plan and Stock Awards granted under it, and to establish, amend and revoke rules and regulations for administration of the Plan. The Board, in the exercise of this power, may correct any defect, omission or inconsistency in the Plan or
in any Stock Award Agreement, in a manner and to the extent it will deem necessary or expedient to make the Plan or Stock Award fully effective. 

(iii) To settle all controversies regarding the Plan and Stock Awards granted under it. 

 (iv) To accelerate the time at which a Stock Award may first be exercised or the time
during which a Stock Award or any part thereof will vest in accordance with the Plan, notwithstanding the provisions in the Stock Award stating the time at which it may first be exercised or the time during which it will vest. 

(v) To suspend or terminate the Plan at any time. Suspension or termination of the Plan will not impair rights and obligations under any
Stock Award granted while the Plan is in effect except with the written consent of the affected Participant. 
 (vi) To amend the Plan
in any respect the Board deems necessary or advisable, including, without limitation, relating to Incentive Stock Options and certain nonqualified deferred compensation under Section 409A of the Code and/or to bring the Plan or Stock Awards
granted under the Plan into compliance therewith, subject to the limitations, if any, of applicable law. However, except as provided in Section 9(a) relating to Capitalization Adjustments, to the extent required by applicable law, stockholder
approval will be required for any amendment of the Plan that either (i) materially increases the number of shares of Common Stock available for issuance under the Plan, (ii) materially expands the class of individuals eligible to receive
Stock Awards under the Plan, (iii) materially increases the benefits accruing to Participants under the Plan or materially reduces the price at which shares of Common Stock may be issued or purchased under the Plan, (iv) materially extends
the term of the Plan, or (v) expands the types of Stock Awards available for issuance under the Plan. Except as provided above, rights under any Stock Award granted before amendment of the Plan will not be impaired by any amendment of the Plan
unless (i) the Company requests the consent of the affected Participant, and (ii) such Participant consents in writing. 
 (vii)
To submit any amendment to the Plan for stockholder approval, including, but not limited to, amendments to the Plan intended to satisfy the requirements of Section 422 of the Code regarding Incentive Stock Options. 

(viii) To approve forms of Stock Award Agreements for use under the Plan and to amend the terms of any one or more Stock Awards,
including, but not limited to, amendments to provide terms more favorable than previously provided in the Stock Award Agreement, subject to any specified limits in the Plan that are not subject to Board discretion; provided however, that, the rights
under any Stock Award will not be impaired by any such amendment unless (i) the Company requests the consent of the affected Participant, and (ii) such Participant consents in writing. Notwithstanding the foregoing, subject to the
limitations of applicable law, if any, and without the affected Participant’s consent, the Board may amend the terms of any one or more Stock Awards if necessary to maintain the qualified status of the Stock Award as an Incentive Stock Option
or to bring the Stock Award into compliance with Section 409A of the Code and the related guidance thereunder. 
 (ix) Generally,
to exercise such powers and to perform such acts as the Board deems necessary or expedient to promote the best interests of the Company and that are not in conflict with the provisions of the Plan or Stock Awards. 

  
 2. 

 (x) To adopt such procedures and sub-plans as
are necessary or appropriate to permit participation in the Plan by Employees, Directors or Consultants who are foreign nationals or employed outside the United States. 

(xi) To effect, at any time and from time to time, with the consent of any adversely affected Option Holder, (1) the reduction of
the exercise price of any outstanding Option under the Plan, (2) the cancellation of any outstanding Option under the Plan and the grant in substitution therefor of (A) a new Option under the Plan or another equity plan of the Company
covering the same or a different number of shares of Common Stock, (B) a Restricted Stock Award, (C) a Stock Appreciation Right, (D) Restricted Stock Unit, (E) cash and/or (F) other valuable consideration (as determined by
the Board, in its sole discretion), or (3) any other action that is treated as a repricing under generally accepted accounting principles; provided, however, that no such reduction or cancellation may be effected if it is determined, in
the Company’s sole discretion, that such reduction or cancellation would result in any such outstanding Option becoming subject to the requirements of Section 409A of the Code. 

(c) Delegation to Committee. The Board may delegate some or all of the administration of the Plan to a Committee or Committees. If
administration of the Plan is delegated to a Committee, the Committee will have, in connection with the administration of the Plan, the powers theretofore possessed by the Board that have been delegated to the Committee, including the power to
delegate to a subcommittee of the Committee any of the administrative powers the Committee is authorized to exercise (and references in this Plan to the Board will thereafter be to the Committee or subcommittee), subject, however, to such
resolutions, not inconsistent with the provisions of the Plan, as may be adopted from time to time by the Board. The Board may retain the authority to concurrently administer the Plan with the Committee and may, at any time, revest in the Board some
or all of the powers previously delegated. 
 (d) Delegation to an Officer. The Board may delegate to one or more Officers of the
Company the authority to do one or both of the following: (i) designate Officers and Employees of the Company or any of its Subsidiaries to be recipients of Options (and, to the extent permitted by applicable law, other Stock Awards) and the
terms thereof, and (ii) determine the number of shares of Common Stock to be subject to such Stock Awards granted to such Officers and Employees; provided, however, that the Board resolutions regarding such delegation will specify the
total number of shares of Common Stock that may be subject to the Stock Awards granted by such Officer and that such Officer may not grant a Stock Award to himself or herself. Notwithstanding the foregoing, the Board may not delegate authority to an
Officer to determine the Fair Market Value of the Common Stock pursuant to Section 14(t) below. 
 (e) Effect of Board’s
Decision. All determinations, interpretations and constructions made by the Board in good faith will not be subject to review by any person and will be final, binding and conclusive on all persons. 

3. SHARES SUBJECT TO THE PLAN. 

(a) Share Reserve. Subject to Section 9(a) relating to Capitalization Adjustments, the aggregate number of shares of Common Stock
of the Company that may be issued pursuant to Stock Awards after the Effective Date will not exceed [8,358,265] shares. For clarity, the limitation in this Section 3(a) is a limitation in the number of shares of Common Stock that may be issued
pursuant to the Plan. Accordingly, this Section 3(a) does not limit the granting of Stock Awards except as provided in Section 7(a). 

  
 3. 

 (b) Reversion of Shares to the Share Reserve. If any shares of Common Stock issued
pursuant to a Stock Award are forfeited back to the Company because of the failure to meet a contingency or condition required to vest such shares in the Participant, then the shares which are forfeited will revert to and again become available for
issuance under the Plan. Also, any shares reacquired by the Company pursuant to Section 8(g) or as consideration for the exercise of an Option will again become available for issuance under the Plan. Furthermore, if a Stock Award
(i) expires or otherwise terminates without having been exercised in full or (ii) is settled in cash (i.e., the holder of the Stock Award receives cash rather than stock), such expiration, termination or settlement will not reduce
(or otherwise offset) the number of shares of Common Stock that may be issued pursuant to the Plan. Notwithstanding the provisions of this Section 3(b), any such shares will not be subsequently issued pursuant to the exercise of Incentive Stock
Options. 
 (c) Incentive Stock Option Limit. Notwithstanding anything to the contrary in this Section 3(c), subject to the
provisions of Section 9(a) relating to Capitalization Adjustments, the aggregate maximum number of shares of Common Stock that may be issued pursuant to the exercise of Incentive Stock Options will be 8,358,265 shares of Common Stock. 

(d) Source of Shares. The stock issuable under the Plan will be shares of authorized but unissued or reacquired Common Stock, including
shares repurchased by the Company on the open market. 
 4. ELIGIBILITY. 

(a) Eligibility for Specific Stock Awards. Incentive Stock Options may be granted only to employees of the Company or a “parent
corporation” or “subsidiary corporation” thereof (as such terms are defined in Sections 424(e) and (f) of the Code). Stock Awards other than Incentive Stock Options may be granted to Employees, Directors and Consultants. 

(b) Ten Percent Stockholders. A Ten Percent Stockholder will not be granted an Incentive Stock Option unless the exercise price of such
Option is at least one hundred ten percent (110%) of the Fair Market Value of the Common Stock on the date of grant and the Option is not exercisable after the expiration of five (5) years from the date of grant. 

(c) Consultants. A Consultant will not be eligible for the grant of a Stock Award if, at the time of grant, either the offer or the sale
of the Company’s securities to such Consultant is not exempt under Rule 701 of the Securities Act (“Rule 701”) because of the nature of the services that the Consultant is providing to the Company, because the Consultant
is not a natural person, or because of any other provision of Rule 701, unless the Company determines that such grant need not comply with the requirements of Rule 701 and will satisfy another exemption under the Securities Act as well as comply
with the securities laws of all other relevant jurisdictions. 

  
 4. 

 5. OPTION PROVISIONS. 

Each Option will be in such form and will contain such terms and conditions as the Board will deem appropriate. All Options will be separately
designated Incentive Stock Options or Nonstatutory Stock Options at the time of grant, and, if certificates are issued, a separate certificate or certificates will be issued for shares of Common Stock purchased on exercise of each type of Option. If
an Option is not specifically designated as an Incentive Stock Option, then the Option will be a Nonstatutory Stock Option. The provisions of separate Options need not be identical; provided, however, that each Option Agreement will include
(through incorporation of provisions hereof by reference in the Option Agreement or otherwise) the substance of each of the following provisions: 

(a) Term. Subject to the provisions of Section 4(b) regarding Ten Percent Stockholders, no Option will be exercisable after the
expiration of ten (10) years from the date of its grant or such shorter period specified in the Option Agreement. 
 (b) Exercise
Price. Subject to the provisions of Section 4(b) regarding Incentive Stock Options granted to Ten Percent Stockholders, the exercise price of each Option will be not less than one hundred percent (100%) of the Fair Market Value of the
Common Stock subject to the Option on the date the Option is granted. Notwithstanding the foregoing, an Option may be granted with an exercise price lower than one hundred percent (100%) of the Fair Market Value of the Common Stock subject to the
Option if such Option is granted pursuant to an assumption or substitution for another option in a manner consistent with the provisions of Section 424(a) of the Code (whether or not such options are Incentive Stock Options). 

(c) Consideration. The purchase price of Common Stock acquired pursuant to the exercise of an Option will be paid, to the extent
permitted by applicable law and as determined by the Board in its sole discretion, by any combination of the methods of payment set forth below. The Board will have the authority to grant Options that do not permit all of the following methods of
payment (or otherwise restrict the ability to use certain methods) and to grant Options that require the consent of the Company to utilize a particular method of payment. The permitted methods of payment are as follows: 

(i) by cash, check, bank draft or money order payable to the Company; 

(ii) pursuant to a program developed under Regulation T as promulgated by the Federal Reserve Board that, prior to the issuance of the
stock subject to the Option, results in either the receipt of cash (or check) by the Company or the receipt of irrevocable instructions to pay the aggregate exercise price to the Company from the sales proceeds; 

(iii) by delivery to the Company (either by actual delivery or attestation) of shares of Common Stock; 

(iv) by a “net exercise” arrangement pursuant to which the Company will reduce the number of shares of Common Stock issued
upon exercise by the largest whole number of shares with a Fair Market Value that does not exceed the aggregate exercise price; provided, however, that the Company will accept a cash or other payment from the Participant to the extent of any
remaining balance of the aggregate exercise price not satisfied by such reduction in the number of 

  
 5. 

 
whole shares to be issued; provided, further, that shares of Common Stock will no longer be outstanding under an Option and will not be exercisable thereafter to the extent that
(A) shares are used to pay the exercise price pursuant to the “net exercise,” (B) shares are delivered to the Participant as a result of such exercise, and (C) shares are withheld to satisfy tax withholding obligations; 

(v) according to a deferred payment or similar arrangement with the Option Holder; provided, however, that interest will compound
at least annually and will be charged at the minimum rate of interest necessary to avoid (A) the imputation of interest income to the Company and compensation income to the Option Holder under any applicable provisions of the Code, and
(B) the classification of the Option as a liability for financial accounting purposes; or 
 (vi) in any other form of legal
consideration that may be acceptable to the Board. 
 (d) Transferability of Options. The Board may, in its sole discretion, impose
such limitations on the transferability of Options as the Board will determine. In the absence of such a determination by the Board to the contrary, the following restrictions on the transferability of Options will apply: 

(i) Restrictions on Transfer. An Option will not be transferable except by will or by the laws of descent and distribution and will be
exercisable during the lifetime of the Option Holder only by the Option Holder; provided, however, that the Board may, in its sole discretion, permit transfer of the Option to such extent as permitted by Rule 701 of the Securities Act at the
time of the grant of the Option and in a manner consistent with applicable tax and securities laws upon the Option Holder’s request. 

(ii) Domestic Relations Orders. Notwithstanding the foregoing, an Option may be transferred pursuant to a domestic relations order,
provided, however, that an Incentive Stock Option may be deemed to be a Nonstatutory Stock Option as a result of such transfer. 

(iii) Beneficiary Designation. Notwithstanding the foregoing, the Option Holder may, by delivering written notice to the Company, in a
form provided by or otherwise satisfactory to the Company, designate a third party who, in the event of the death of the Option Holder, will thereafter be the beneficiary of an Option with the right to exercise the Option and receive the Common
Stock or other consideration resulting from the Option exercise. 
 (e) Vesting of Options Generally. The total number of shares of
Common Stock subject to an Option may vest and therefore become exercisable in periodic installments that may or may not be equal. The Option may be subject to such other terms and conditions on the time or times when it may or may not be exercised
(which may be based on the satisfaction of performance goals or other criteria) as the Board may deem appropriate. The vesting provisions of individual Options may vary. The provisions of this Section 5(e) are subject to any Option provisions
governing the minimum number of shares of Common Stock as to which an Option may be exercised. 

  
 6. 

 (f) Termination of Continuous Service. Except as otherwise provided in the applicable
Option Agreement or other agreement between the Option Holder and the Company, in the event that an Option Holder’s Continuous Service terminates (other than for Cause or upon the Option Holder’s death or Disability), the Option Holder may
exercise his or her Option (to the extent that the Option Holder was entitled to exercise such Option as of the date of termination of Continuous Service) but only within such period of time ending on the earlier of (i) the date three
(3) months following the termination of the Option Holder’s Continuous Service (or such longer or shorter period specified in the Option Agreement, which period will not be less than thirty (30) days unless such termination is for
Cause), or (ii) the expiration of the term of the Option as set forth in the Option Agreement. If, after termination of Continuous Service, the Option Holder does not exercise his or her Option within the time specified in this Plan or in the
Option Agreement (as applicable), the Option will terminate. 
 (g) Extension of Termination Date. Except as otherwise provided in the
applicable Option Agreement or other agreement between the Option Holder and the Company, if the exercise of the Option following the termination of the Option Holder’s Continuous Service (other than for Cause or upon the Option Holder’s
death or Disability) would be prohibited at any time solely because the issuance of shares of Common Stock would violate the registration requirements under the Securities Act, then the Option will terminate on the earlier of (i) the expiration
of a period of three (3) months after the termination of the Option Holder’s Continuous Service during which the exercise of the Option would not be in violation of such registration requirements, or (ii) the expiration of the term of
the Option as set forth in the Option Agreement. 
 (h) Disability of Option Holder. Except as otherwise provided in the applicable
Option Agreement or other agreement between the Option Holder and the Company, in the event that an Option Holder’s Continuous Service terminates as a result of the Option Holder’s Disability, the Option Holder may exercise his or her
Option (to the extent that the Option Holder was entitled to exercise such Option as of the date of termination of Continuous Service), but only within such period of time ending on the earlier of (i) the date twelve (12) months following
such termination of Continuous Service (or such longer or shorter period specified in the Option Agreement, which period will not be less than six (6) months), or (ii) the expiration of the term of the Option as set forth in the Option
Agreement. If, after termination of Continuous Service, the Option Holder does not exercise his or her Option within the time specified in this Plan or in the Option Agreement (as applicable), the Option will terminate. 

(i) Death of Option Holder. Except as otherwise provided in the applicable Option Agreement or other agreement between the Option Holder
and the Company, in the event that (i) an Option Holder’s Continuous Service terminates as a result of the Option Holder’s death, or (ii) the Option Holder dies within the period (if any) specified in the Option Agreement after
the termination of the Option Holder’s Continuous Service for a reason other than death, then the Option may be exercised (to the extent the Option Holder was entitled to exercise such Option as of the date of death) by the Option Holder’s
estate, by a person who acquired the right to exercise the Option by bequest or inheritance or by a person designated as the beneficiary of the Option upon the Option Holder’s death, but only within the period ending on the earlier of
(i) the date eighteen (18) months following the date of death (or such longer or shorter period specified in the Option Agreement, which period will not be less than six (6) months), or (ii) the expiration of the term of such
Option as set forth in the Option Agreement. If, after the Option Holder’s death, the Option is not exercised within the time specified in this Plan or in the Option Agreement (as applicable), the Option will terminate. If the Option Holder
designates a third party beneficiary of the Option in accordance with Section 5(d)(iii), then upon the death of the Option Holder such designated beneficiary will have the sole right to exercise the Option and receive the Common Stock or other
consideration resulting from the Option exercise. 

  
 7. 

 (j) Termination for Cause. Except as explicitly provided otherwise in an Option
Holder’s Option Agreement in the event that an Option Holder’s Continuous Service is terminated for Cause, the Option will terminate upon the termination date of such Option Holder’s Continuous Service, and the Option Holder will be
prohibited from exercising his or her Option from and after the time of such termination of Continuous Service. 
 (k) Non-Exempt Employees. No Option granted to an Employee that is a non-exempt employee for purposes of the Fair Labor Standards Act of 1938, as amended, will be first
exercisable for any shares of Common Stock until at least six months following the date of grant of the Option. The foregoing provision is intended to operate so that any income derived by a non-exempt
employee in connection with the exercise or vesting of an Option will be exempt from his or her regular rate of pay. 
 (l) Early
Exercise. The Option may, but need not, include a provision whereby the Option Holder may elect at any time before the Option Holder’s Continuous Service terminates to exercise the Option as to any part or all of the shares of Common Stock
subject to the Option prior to the full vesting of the Option. Subject to the “Repurchase Limitation” in Section 8(l), any unvested shares of Common Stock so purchased may be subject to a repurchase option in favor of the Company or
to any other restriction the Board determines to be appropriate. Provided that the “Repurchase Limitation” in Section 8(l) is not violated, the Company will not be required to exercise its repurchase option until at least six
(6) months (or such longer or shorter period of time required to avoid classification of the Option as a liability for financial accounting purposes) have elapsed following exercise of the Option unless the Board otherwise specifically provides
in the Option Agreement. 
 (m) Right of Repurchase. Subject to the “Repurchase Limitation” in Section 8(l), the Option
may include a provision whereby the Company may elect to repurchase all or any part of the vested shares of Common Stock acquired by the Option Holder pursuant to the exercise of the Option. 

(n) Right of First Refusal. The Option may include a provision whereby the Company may elect to exercise a right of first refusal
following receipt of notice from the Option Holder of the intent to transfer all or any part of the shares of Common Stock received upon the exercise of the Option. Such right of first refusal will be subject to the “Repurchase Limitation”
in Section 8(l). Except as expressly provided in this Section 5(n) or in the Option Agreement, such right of first refusal will otherwise comply with any applicable provisions of the Bylaws of the Company. 

6. PROVISIONS OF STOCK AWARDS OTHER THAN OPTIONS.

 (a) Restricted Stock Awards. Each Restricted Stock Award Agreement will be in such form and will contain such terms and
conditions as the Board will deem appropriate. To the extent consistent with the Company’s Bylaws, at the Board’s election, shares of Common Stock may be (x) held in book entry form subject to the Company’s instructions until any
restrictions relating to the Restricted Stock Award lapse; or (y) evidenced by a certificate, which certificate 

  
 8. 

 
will be held in such form and manner as determined by the Board. The terms and conditions of Restricted Stock Award Agreements may change from time to time, and the terms and conditions of
separate Restricted Stock Award Agreements need not be identical; provided, however, that each Restricted Stock Award Agreement will include (through incorporation of the provisions hereof by reference in the agreement or otherwise) the
substance of each of the following provisions: 
 (i) Consideration. A Restricted Stock Award may be awarded in consideration for
(A) past or future services actually or to be rendered to the Company or an Affiliate, or (B) any other form of legal consideration that may be acceptable to the Board in its sole discretion and permissible under applicable law. 

(ii) Vesting. Subject to the “Repurchase Limitation” in Section 8(l), shares of Common Stock awarded under the Restricted
Stock Award Agreement may be subject to forfeiture to the Company in accordance with a vesting schedule to be determined by the Board. 

(iii) Termination of Participant’s Continuous Service. In the event a Participant’s Continuous Service terminates, the Company
may receive via a forfeiture condition, any or all of the shares of Common Stock held by the Participant which have not vested as of the date of termination of Continuous Service under the terms of the Restricted Stock Award Agreement. 

(iv) Transferability. Rights to acquire shares of Common Stock under the Restricted Stock Award Agreement will be transferable by the
Participant only upon such terms and conditions as are set forth in the Restricted Stock Award Agreement, as the Board will determine in its sole discretion, so long as Common Stock awarded under the Restricted Stock Award Agreement remains subject
to the terms of the Restricted Stock Award Agreement. 
 (b) Restricted Stock Unit Awards. Each Restricted Stock Unit Award Agreement
will be in such form and will contain such terms and conditions as the Board will deem appropriate. The terms and conditions of Restricted Stock Unit Award Agreements may change from time to time, and the terms and conditions of separate Restricted
Stock Unit Award Agreements need not be identical, provided, however, that each Restricted Stock Unit Award Agreement will include (through incorporation of the provisions hereof by reference in the Agreement or otherwise) the substance of
each of the following provisions: 
 (i) Consideration. At the time of grant of a Restricted Stock Unit Award, the Board will
determine the consideration, if any, to be paid by the Participant upon delivery of each share of Common Stock subject to the Restricted Stock Unit Award. The consideration to be paid (if any) by the Participant for each share of Common Stock
subject to a Restricted Stock Unit Award may be paid in any form of legal consideration that may be acceptable to the Board in its sole discretion and permissible under applicable law. 

(ii) Vesting. At the time of the grant of a Restricted Stock Unit Award, the Board may impose such restrictions or conditions to the
vesting of the Restricted Stock Unit Award as it, in its sole discretion, deems appropriate. 

  
 9. 

 (iii) Payment. A Restricted Stock Unit Award may be settled by the delivery of shares
of Common Stock, their cash equivalent, any combination thereof or in any other form of consideration, as determined by the Board and contained in the Restricted Stock Unit Award Agreement. 

(iv) Additional Restrictions. At the time of the grant of a Restricted Stock Unit Award, the Board, as it deems appropriate, may impose
such restrictions or conditions that delay the delivery of the shares of Common Stock (or their cash equivalent) subject to a Restricted Stock Unit Award to a time after the vesting of such Restricted Stock Unit Award. 

(v) Dividend Equivalents. Dividend equivalents may be credited in respect of shares of Common Stock covered by a Restricted Stock Unit
Award, as determined by the Board and contained in the Restricted Stock Unit Award Agreement. At the sole discretion of the Board, such dividend equivalents may be converted into additional shares of Common Stock covered by the Restricted Stock Unit
Award in such manner as determined by the Board. Any additional shares covered by the Restricted Stock Unit Award credited by reason of such dividend equivalents will be subject to all the terms and conditions of the underlying Restricted Stock Unit
Award Agreement to which they relate. 
 (vi) Termination of Participant’s Continuous Service. Except as otherwise provided in
the applicable Restricted Stock Unit Award Agreement, such portion of the Restricted Stock Unit Award that has not vested will be forfeited upon the Participant’s termination of Continuous Service. 

(vii) Compliance with Section 409A of the Code. Notwithstanding anything to the contrary set forth in this Plan, any
Restricted Stock Unit Award granted under the Plan that is not exempt from the requirements of Section 409A of the Code will contain such provisions so that such Restricted Stock Unit Award will comply with the requirements of Section 409A
of the Code. Such restrictions, if any, will be determined by the Board and contained in the Restricted Stock Unit Award Agreement evidencing such Restricted Stock Unit Award. For example, such restrictions may include, without limitation, a
requirement that any Common Stock that is to be issued in a year following the year in which the Restricted Stock Unit Award vests must be issued in accordance with a fixed pre-determined schedule. 

(c) Stock Appreciation Rights. Each Stock Appreciation Right Agreement will be in such form and will contain such terms and conditions
as the Board will deem appropriate. Stock Appreciation Rights may be granted as stand-alone Stock Awards or in tandem with other Stock Awards. The terms and conditions of Stock Appreciation Right Agreements may change from time to time, and the
terms and conditions of separate Stock Appreciation Right Agreements need not be identical; provided, however, that each Stock Appreciation Right Agreement will include (through incorporation of the provisions hereof by reference in the
agreement or otherwise) the substance of each of the following provisions: 
 (i) Term. No Stock Appreciation Right will be
exercisable after the expiration of ten (10) years from the date of grant or such shorter period specified in the Stock Appreciation Right Agreement. 

  
 10. 

 (ii) Strike Price. Each Stock Appreciation Right will be denominated in shares of
Common Stock equivalents. The strike price of each Stock Appreciation Right granted as a stand-alone or tandem Stock Award will not be less than one hundred percent (100%) of the Fair Market Value of the Common Stock equivalents subject to the Stock
Appreciation Right on the date of grant. 
 (iii) Calculation of Appreciation. The appreciation distribution payable on the exercise
of a Stock Appreciation Right will be not greater than an amount equal to the excess of (A) the aggregate Fair Market Value (on the date of the exercise of the Stock Appreciation Right) of a number of shares of Common Stock equal to the number
of shares of Common Stock equivalents in which the Participant is vested under such Stock Appreciation Right, and with respect to which the Participant is exercising the Stock Appreciation Right on such date, over (B) the strike price that will
be determined by the Board on the date of grant. 
 (iv) Vesting. At the time of the grant of a Stock Appreciation Right, the Board
may impose such restrictions or conditions to the vesting of such Stock Appreciation Right as it, in its sole discretion, deems appropriate. 

(v) Exercise. To exercise any outstanding Stock Appreciation Right, the Participant must provide written notice of exercise to the
Company in compliance with the provisions of the Stock Appreciation Right Agreement evidencing such Stock Appreciation Right. 
 (vi) Non-Exempt Employees. No Stock Appreciation Right granted to an Employee that is a non-exempt employee for purposes of the Fair Labor Standards Act of 1938, as amended,
will be first exercisable for any shares of Common Stock until at least six months following the date of grant of the Stock Appreciation Right. The foregoing provision is intended to operate so that any income derived by a non-exempt employee in connection with the exercise of a Stock Appreciation Right will be exempt from his or her regular rate of pay. 

(vii) Payment. The appreciation distribution in respect to a Stock Appreciation Right may be paid in Common Stock, in cash, in any
combination of the two or in any other form of consideration, as determined by the Board and contained in the Stock Appreciation Right Agreement evidencing such Stock Appreciation Right. 

(viii) Termination of Continuous Service. Except as otherwise provided in the applicable Stock Appreciation Right Agreement or other
agreement between the Participant and the Company, in the event that a Participant’s Continuous Service terminates (other than for Cause or upon the Participant’s death or Disability), the Participant may exercise his or her Stock
Appreciation Right (to the extent that the Participant was entitled to exercise such Stock Appreciation Right as of the date of termination of Continuous Service) but only within such period of time ending on the earlier of (A) the date three
(3) months following the termination of the Participant’s Continuous Service (or such longer or shorter period specified in the Stock Appreciation Right Agreement, which period will not be less than thirty (30) days unless such
termination is for Cause), or (B) the expiration of the term of the Stock Appreciation Right as set forth in the Stock Appreciation Right Agreement. If, after termination of Continuous Service, the Participant does not exercise his or her Stock
Appreciation Right within the time specified in this Plan or in the Stock Appreciation Right Agreement (as applicable), the Stock Appreciation Right will terminate. 

  
 11. 

 (ix) Disability of Participant. Except as otherwise provided in the applicable Stock
Appreciation Right Agreement or other agreement between the Participant and the Company, in the event that a Participant’s Continuous Service terminates as a result of the Participant’s Disability, the Participant may exercise his or her
Stock Appreciation Right (to the extent that the Participant was entitled to exercise such Stock Appreciation Right as of the date of termination of Continuous Service), but only within such period of time ending on the earlier of (A) the date
twelve (12) months following such termination of Continuous Service (or such longer or shorter period specified in the Stock Appreciation Right Agreement, which period will not be less than six (6) months), or (B) the expiration of
the term of the Stock Appreciation Right as set forth in the Stock Appreciation Right Agreement. If, after termination of Continuous Service, the Participant does not exercise his or her Stock Appreciation Right within the time specified in this
Plan or in the Stock Appreciation Right Agreement (as applicable), the Stock Appreciation Right will terminate. 
 (x) Death of
Participant. Except as otherwise provided in the applicable Stock Appreciation Right Agreement or other agreement between the Participant and the Company, in the event that (i) a Participant’s Continuous Service terminates as a result
of the Participant’s death, or (ii) the Participant dies within the period (if any) specified in the Stock Appreciation Right Agreement after the termination of the Participant’s Continuous Service for a reason other than death, then
the Stock Appreciation Right may be exercised (to the extent the Participant was entitled to exercise such Stock Appreciation Right as of the date of death) by the Participant’s estate, by a person who acquired the right to exercise the Stock
Appreciation Right by bequest or inheritance or by a person designated as the beneficiary of the Stock Appreciation Right upon the Participant’s death, but only within the period ending on the earlier of (i) the date eighteen
(18) months following the date of death (or such longer or shorter period specified in the Stock Appreciation Right Agreement, which period will not be less than six (6) months), or (ii) the expiration of the term of such Stock
Appreciation Right as set forth in the Stock Appreciation Right Agreement. If, after the Participant’s death, the Stock Appreciation Right is not exercised within the time specified in this Plan or in the Stock Appreciation Right Agreement (as
applicable), the Stock Appreciation Right will terminate. 
 (xi) Termination for Cause. Except as explicitly provided otherwise in an
Participant’s Stock Appreciation Right Agreement, in the event that a Participant’s Continuous Service is terminated for Cause, the Stock Appreciation Right will terminate upon the termination date of such Participant’s Continuous
Service, and the Participant will be prohibited from exercising his or her Stock Appreciation Right from and after the time of such termination of Continuous Service. 

(xii) Compliance with Section 409A of the Code. Notwithstanding anything to the contrary set forth in this Plan, any
Stock Appreciation Rights granted under the Plan that are not exempt from the requirements of Section 409A of the Code will contain such provisions so that such Stock Appreciation Rights will comply with the requirements of Section 409A of
the Code. Such restrictions, if any, will be determined by the Board and contained in the Stock Appreciation Right Agreement evidencing such Stock Appreciation Right. For example, such restrictions may include, without limitation, a requirement that
a Stock Appreciation Right that is to be paid wholly or partly in cash must be exercised and paid in accordance with a fixed pre-determined schedule. 

  
 12. 

 7. COVENANTS OF THE COMPANY. 

(a) Availability of Shares. During the terms of the Stock Awards, the Company will keep available at all times the number of shares of
Common Stock reasonably required to satisfy such Stock Awards. 
 (b) Securities Law Compliance. The Company will seek to obtain from
each regulatory commission or agency having jurisdiction over the Plan such authority as may be required to grant Stock Awards and to issue and sell shares of Common Stock upon exercise of the Stock Awards; provided, however, that this
undertaking will not require the Company to register under the Securities Act the Plan, any Stock Award or any Common Stock issued or issuable pursuant to any such Stock Award. If, after reasonable efforts, the Company is unable to obtain from any
such regulatory commission or agency the authority that counsel for the Company deems necessary for the lawful issuance and sale of Common Stock under the Plan, the Company will be relieved from any liability for failure to issue and sell Common
Stock upon exercise of such Stock Awards unless and until such authority is obtained. 
 (c) No Obligation to Notify. The Company will
have no duty or obligation to any holder of a Stock Award to advise such holder as to the time or manner of exercising such Stock Award. Furthermore, the Company will have no duty or obligation to warn or otherwise advise such holder of a pending
termination or expiration of a Stock Award or a possible period in which the Stock Award may not be exercised. The Company has no duty or obligation to minimize the tax consequences of a Stock Award to the holder of such Stock Award. 

8. MISCELLANEOUS. 
 (a)
Use of Proceeds from Sales of Common Stock. Proceeds from the sale of shares of Common Stock pursuant to Stock Awards will constitute general funds of the Company. 

(b) Corporate Action Constituting Grant of Stock Awards. Corporate action constituting a grant by the Company of a Stock Award to any
Participant will be deemed completed as of the date of such corporate action, unless otherwise determined by the Board, regardless of when the instrument, certificate, or letter evidencing the Stock Award is communicated to, or actually received or
accepted by, the Participant. 
 (c) Stockholder Rights. No Participant will be deemed to be the holder of, or to have any of the
rights of a holder with respect to, any shares of Common Stock subject to such Stock Award unless and until such Participant has satisfied all requirements for exercise of the Stock Award pursuant to its terms and the Participant will not be deemed
to be a stockholder of record until the issuance of the Common Stock pursuant to such exercise has been entered into the books and records of the Company. Upon request by the Company, each Participant will execute any voting agreement, stockholder
agreement, right of first refusal and co-sale agreement or similar agreement among the stockholders of the Company. 

  
 13. 

 (d) No Employment or Other Service Rights. Nothing in the Plan, any Stock Award
Agreement or any other instrument executed thereunder or in connection with any Stock Award granted pursuant to the Plan will confer upon any Participant any right to continue to serve the Company or an Affiliate in the capacity in effect at the
time the Stock Award was granted or will affect the right of the Company or an Affiliate to terminate (i) the employment of an Employee with or without notice and with or without cause, (ii) the service of a Consultant pursuant to the
terms of such Consultant’s agreement with the Company or an Affiliate, or (iii) the service of a Director pursuant to the Bylaws of the Company or an Affiliate, and any applicable provisions of the corporate law of the state in which the
Company or the Affiliate is incorporated, as the case may be. 
 (e) Incentive Stock Option $100,000 Limitation. To the extent that
the aggregate Fair Market Value (determined at the time of grant) of Common Stock with respect to which Incentive Stock Options are exercisable for the first time by any Option Holder during any calendar year (under all plans of the Company and any
Affiliates) exceeds one hundred thousand dollars ($100,000), the Options or portions thereof that exceed such limit (according to the order in which they were granted) will be treated as Nonstatutory Stock Options, notwithstanding any contrary
provision of the applicable Option Agreement(s). 
 (f) Investment Assurances. The Company may require a Participant, as a condition
of exercising or acquiring Common Stock under any Stock Award, (i) to give written assurances satisfactory to the Company as to the Participant’s knowledge and experience in financial and business matters and/or to employ a purchaser
representative reasonably satisfactory to the Company who is knowledgeable and experienced in financial and business matters and that he or she is capable of evaluating, alone or together with the purchaser representative, the merits and risks of
exercising the Stock Award; and (ii) to give written assurances satisfactory to the Company stating that the Participant is acquiring Common Stock subject to the Stock Award for the Participant’s own account and not with any present
intention of selling or otherwise distributing the Common Stock. The foregoing requirements, and any assurances given pursuant to such requirements, will be inoperative if (x) the issuance of the shares upon the exercise or acquisition of
Common Stock under the Stock Award has been registered under a then currently effective registration statement under the Securities Act, or (y) as to any particular requirement, a determination is made by counsel for the Company that such
requirement need not be met in the circumstances under the then applicable securities laws. The Company may, upon advice of counsel to the Company, place legends on stock certificates issued under the Plan as such counsel deems necessary or
appropriate in order to comply with applicable securities laws, including, but not limited to, legends restricting the transfer of the Common Stock. 

(g) Withholding Obligations. To the extent provided by the terms of a Stock Award Agreement, the Company may, in its sole discretion,
satisfy any federal, state or local tax withholding obligation relating to a Stock Award by any of the following means (in addition to the Company’s right to withhold from any compensation paid to the Participant by the Company) or by a
combination of such means: (i) causing the Participant to tender a cash payment; (ii) withholding shares of Common Stock from the shares of Common Stock issued or otherwise issuable to the Participant in connection with the Stock Award;
provided, however, that no shares of Common Stock are withheld with a value exceeding the minimum amount of tax required to be withheld by law (or such lower amount as may be necessary to avoid classification of the Stock Award as a liability
for financial accounting purposes); (iii) withholding payment from any amounts otherwise payable to the Participant; (iv) withholding cash from a Stock Award settled in cash; or (v) by such other method as may be set forth in the Stock
Award Agreement. 

  
 14. 

 (h) Electronic Delivery. Any reference in this Plan to a “written”
agreement or document will include any agreement or document delivered electronically or posted on the Company’s intranet. 
 (i)
Deferrals. To the extent permitted by applicable law, the Board, in its sole discretion, may determine that the delivery of Common Stock or the payment of cash, upon the exercise, vesting or settlement of all or a portion of any Stock Award may
be deferred and may establish programs and procedures for deferral elections to be made by Participants. Deferrals by Participants will be made in accordance with Section 409A of the Code. Consistent with Section 409A of the Code, the
Board may provide for distributions while a Participant is still an employee. The Board is authorized to make deferrals of Stock Awards and determine when, and in what annual percentages, Participants may receive payments, including lump sum
payments, following the Participant’s termination of employment or retirement, and implement such other terms and conditions consistent with the provisions of the Plan and in accordance with applicable law. 

(j) Compliance with Section 409A. To the extent that the Board determines that any Stock Award granted hereunder is
subject to Section 409A of the Code, the Stock Award Agreement evidencing such Stock Award will incorporate the terms and conditions necessary to avoid the consequences specified in Section 409A(a)(1) of the Code. To the extent applicable,
the Plan and Stock Award Agreements will be interpreted in accordance with Section 409A of the Code and Department of Treasury regulations and other interpretive guidance issued thereunder, including without limitation any such regulations or
other guidance that may be issued or amended after the Effective Date. Notwithstanding any provision of the Plan to the contrary, in the event that following the Effective Date the Board determines that any Stock Award may be subject to
Section 409A of the Code and related Department of Treasury guidance (including such Department of Treasury guidance as may be issued after the Effective Date), the Board may adopt such amendments to the Plan and the applicable Stock Award
Agreement or adopt other policies and procedures (including amendments, policies and procedures with retroactive effect), or take any other actions, that the Board determines are necessary or appropriate to (1) exempt the Stock Award from
Section 409A of the Code and/or preserve the intended tax treatment of the benefits provided with respect to the Stock Award, or (2) comply with the requirements of Section 409A of the Code and related Department of Treasury guidance.

 (k) Compliance with Exemption Provided by Rule 12h-1(f). If: (i) the aggregate of the
number of Option Holders and the number of holders of all other outstanding compensatory employee stock options to purchase shares of Common Stock equals or exceeds five hundred (500), and (ii) the assets of the Company at the end of the
Company’s most recently completed fiscal year exceed $10 million, then the following restrictions will apply during any period during which the Company does not have a class of its securities registered under Section 12 of the
Exchange Act and is not required to file reports under Section 15(d) of the Exchange Act: (A) the Options and, prior to exercise, the shares of Common Stock acquired upon exercise of the Options may not be transferred until the Company is
no longer relying on the exemption provided by Rule 12h-1(f) promulgated under the Exchange Act (“Rule 12h-1(f)”), except: (1) as permitted
by Rule 

  
 15. 

 
701(c) promulgated under the Securities Act, (2) to a guardian upon the disability of the Option Holder, or (3) to an executor upon the death of the Option Holder (collectively, the
“Permitted Transferees”); provided, however, the following transfers are permitted: (i) transfers by the Option Holder to the Company, and (ii) transfers in connection with a change of control or other
acquisition involving the Company, if following such transaction, the Options no longer remain outstanding and the Company is no longer relying on the exemption provided by Rule 12h-1(f); provided
further, that any Permitted Transferees may not further transfer the Options; (B) except as otherwise provided in (A) above, the Options and shares of Common Stock acquired upon exercise of the Options are restricted as to any pledge,
hypothecation, or other transfer, including any short position, any “put equivalent position” as defined by Rule 16a-1(h) promulgated under the Exchange Act, or any “call equivalent
position” as defined by Rule 16a-1(b) promulgated under the Exchange Act by the Option Holder prior to exercise of an Option until the Company is no longer relying on the exemption provided by Rule 12h-1(f); and (C) at any time that the Company is relying on the exemption provided by Rule 12h-1(f), the Company will deliver to Option Holders (whether by physical or
electronic delivery or written notice of the availability of the information on an internet site) the information required by Rule 701(e)(3), (4), and (5) promulgated under the Securities Act every six (6) months, including financial
statements that are not more than one hundred eighty (180) days old; provided, however, that the Company may condition the delivery of such information upon the Option Holder’s agreement to maintain its confidentiality. 

(l) Repurchase Limitation. The terms of any repurchase option will be specified in the Stock Award Agreement. The repurchase price for
vested shares of Common Stock will be the Fair Market Value of the shares of Common Stock on the date of repurchase. The repurchase price for unvested shares of Common Stock will be the lower of (i) the Fair Market Value of the shares of Common
Stock on the date of repurchase or (ii) their original purchase price. However, the Company will not exercise its repurchase option until at least six (6) months (or such longer or shorter period of time necessary to avoid classification
of the Stock Award as a liability for financial accounting purposes) have elapsed following delivery of shares of Common Stock subject to the Stock Award, unless otherwise specifically provided by the Board. 

9. ADJUSTMENTS UPON CHANGES IN COMMON STOCK; OTHER
CORPORATE EVENTS. 
 (a) Capitalization Adjustments. In the event of a Capitalization Adjustment,
the Board will proportionately and appropriately adjust: (i) the class(es) and maximum number of securities subject to the Plan pursuant to Section 3(a), (ii) the class(es) and maximum number of securities that may be issued pursuant to
the exercise of Incentive Stock Options pursuant to Section 3(c), and (iii) the class(es) and number of securities and price per share of stock subject to outstanding Stock Awards. The Board will make such adjustments, and its
determination will be final, binding and conclusive. 
 (b) Dissolution or Liquidation. Except as otherwise provided in the Stock
Award Agreement, in the event of a dissolution or liquidation of the Company, all outstanding Stock Awards (other than Stock Awards consisting of vested and outstanding shares of Common Stock not subject to the Company’s right of repurchase)
will terminate immediately prior to the completion of such dissolution or liquidation, and the shares of Common Stock subject to the Company’s repurchase option may be repurchased by the Company notwithstanding the fact that the holder of such
Stock Award is providing Continuous Service, provided, however, that the Board may, in its sole discretion, cause some or all Stock Awards to become fully vested, exercisable and/or no longer subject to repurchase or forfeiture (to the extent
such Stock Awards have not previously expired or terminated) before the dissolution or liquidation is completed but contingent on its completion. 

  
 16. 

 (a) Corporate Transaction. The following provisions will apply to Stock Awards in the
event of a Corporate Transaction unless otherwise provided in the instrument evidencing the Stock Award or any other written agreement between the Company or any Affiliate and the holder of the Stock Award or unless otherwise expressly provided by
the Board at the time of grant of a Stock Award. Except as otherwise stated in the Stock Award Agreement, in the event of a Corporate Transaction, then, notwithstanding any other provision of the Plan, the Board will take one or more of the
following actions with respect to Stock Awards, contingent upon the closing or completion of the Corporate Transaction: 
 (i) arrange
for the surviving corporation or acquiring corporation (or the surviving or acquiring corporation’s parent company) to assume or continue the Stock Award or to substitute a similar stock award for the Stock Award (including, but not limited to,
an award to acquire the same consideration paid to the stockholders of the Company pursuant to the Corporate Transaction); 
 (ii)
arrange for the assignment of any reacquisition or repurchase rights held by the Company in respect of Common Stock issued pursuant to the Stock Award to the surviving corporation or acquiring corporation (or the surviving or acquiring
corporation’s parent company); 
 (iii) accelerate the vesting of the Stock Award (and, if applicable, the time at which the
Stock Award may be exercised) to a date prior to the effective time of such Corporate Transaction as the Board will determine (or, if the Board will not determine such a date, to the date that is five (5) days prior to the effective date of the
Corporate Transaction), with such Stock Award terminating if not exercised (if applicable) at or prior to the effective time of the Corporate Transaction; 

(iv) arrange for the lapse of any reacquisition or repurchase rights held by the Company with respect to the Stock Award; 

(v) terminate or cancel, or arrange for the termination or cancellation, of the Stock Award, to the extent not vested or not exercised
prior to the effective time of the Corporate Transaction; and 
 (vi) make a payment, in such form as may be determined by the Board
equal to the excess, if any, of (A) the value of the property the holder of the Stock Award would have received upon the exercise of the Stock Award, over (B) any exercise price payable by such holder in connection with such exercise. 

The Board need not take the same action with respect to all Stock Awards or with respect to all Participants. 

(b) Change in Control. A Stock Award may be subject to additional acceleration of vesting and exercisability upon or after a Change in
Control as may be provided in the Stock Award Agreement for such Stock Award or as may be provided in any other written agreement between the Company or any Affiliate and the Participant, but in the absence of such provision, no such acceleration
will occur. 

  
 17. 

 10. PURCHASE FOR INVESTMENT. 

Unless the offering and sale of the Stock Restricted Award or Stock Restricted Unit Award (collectively, “Shares”)
shall have been effectively registered under the Securities Act, the Company shall be under no obligation to issue Shares under the Plan unless and until the following conditions have been fulfilled: 

(a) The person who receives a Stock Appreciation Right shall warrant to the Company, prior to the receipt of Shares, that such person is
acquiring such Shares for their own account, for investment, and not with a view to, or for sale in connection with, the distribution of any such Shares, in which event the person acquiring such Shares shall be bound by the provisions of the
following legend (or a legend in substantially similar form) which shall be endorsed upon the certificate evidencing the Shares issued pursuant to such exercise or such grant: 

“The shares represented by this certificate have been taken for investment and they may not be sold or otherwise transferred by any
person, including a pledgee unless (1) either (a) a Registration Statement with respect to such shares shall be effective under the Securities Act of 1933, as amended, or (b) the Company shall have received an opinion of counsel
satisfactory to it that an exemption from registration under such Act is then available, and (2) there shall have been compliance with all applicable state securities laws.” 

(b) At the discretion of the Committee, the Company shall have received an opinion of its counsel that the Shares may be issued in
compliance with the Securities Act without registration thereunder. 
 11. TERMINATION OR SUSPENSION
OF THE PLAN. 
 (a) Plan Term. The Board may suspend or terminate the Plan at any
time. Unless sooner terminated by the Board pursuant to Section 2, the Plan will automatically terminate on the day before the tenth (10th) anniversary of the earlier of (i) the date the Plan is adopted by the Board, or (ii) the date
the Plan is approved by the stockholders of the Company. No Stock Awards may be granted under the Plan while the Plan is suspended or after it is terminated. 

(b) No Impairment of Rights. Suspension or termination of the Plan will not impair rights and obligations under any Stock Award granted
while the Plan is in effect except with the written consent of the affected Participant. 
 12. EFFECTIVE DATE
OF PLAN. 
 This Plan will become effective on the Effective Date. 

  
 18. 

 13. CHOICE OF LAW. 

The law of the State of Delaware will govern all questions concerning the construction, validity and interpretation of this Plan, without
regard to that state’s conflict of laws rules. 
 14. DEFINITIONS. As used in the Plan, the following definitions will
apply to the capitalized terms indicated below: 
 (a) “Affiliate” means, at the time of determination, any
“parent” or “majority-owned subsidiary” of the Company, as such terms are defined in Rule 405 of the Securities Act. The Board will have the authority to determine the time or times at which “parent” or
“majority-owned subsidiary” status is determined within the foregoing definition. 
 (b) “Board”
means the Board of Directors of the Company. 
 (c) “Capitalization Adjustment” means any change that is made
in, or other events that occur with respect to, the Common Stock subject to the Plan or subject to any Stock Award after the Effective Date without the receipt of consideration by the Company (through merger, consolidation, reorganization,
recapitalization, reincorporation, stock dividend, dividend in property other than cash, stock split, liquidating dividend, combination of shares, exchange of shares, change in corporate structure or other transaction not involving the receipt of
consideration by the Company). Notwithstanding the foregoing, the conversion of any convertible securities of the Company will not be treated as a transaction “without the receipt of consideration” by the Company. 

(d) “Cause” means with respect to a Participant, the occurrence of any of the following events: (i) such
Participant’s commission of any felony or any crime involving fraud, dishonesty or moral turpitude under the laws of the United States or any state thereof; (ii) such Participant’s attempted commission of, or participation in, a fraud
or act of dishonesty against the Company; (iii) such Participant’s intentional, material violation of any contract or agreement between the Participant and the Company or of any statutory duty owed to the Company; (iv) such
Participant’s unauthorized use or disclosure of the Company’s confidential information or trade secrets; or (v) such Participant’s gross misconduct. The determination that a termination of the Participant’s Continuous
Service is either for Cause or without Cause will be made by the Company in its sole discretion. Any determination by the Company that the Continuous Service of a Participant was terminated by reason of dismissal without Cause for the purposes of
outstanding Stock Awards held by such Participant will have no effect upon any determination of the rights or obligations of the Company or such Participant for any other purpose. 

(e) “Change in Control” means the occurrence, in a single transaction or in a series of related transactions, of
any one or more of the following events: 
 (i) any Exchange Act Person becomes the Owner, directly or indirectly, of securities of
the Company representing more than fifty percent (50%) of the combined voting power of the Company’s then outstanding securities other than by virtue of a merger, consolidation or similar transaction. Notwithstanding the foregoing, a Change in
Control will not be deemed to occur (A) on account of the acquisition of securities of the Company by an investor, any affiliate thereof or any other Exchange Act Person that acquires the Company’s securities in a transaction

  
 19. 

 
or series of related transactions the primary purpose of which is to obtain financing for the Company through the issuance of equity securities or (B) solely because the level of Ownership
held by any Exchange Act Person (the “Subject Person”) exceeds the designated percentage threshold of the outstanding voting securities as a result of a repurchase or other acquisition of voting securities by the Company
reducing the number of shares outstanding, provided that if a Change in Control would occur (but for the operation of this sentence) as a result of the acquisition of voting securities by the Company, and after such share acquisition, the Subject
Person becomes the Owner of any additional voting securities that, assuming the repurchase or other acquisition had not occurred, increases the percentage of the then outstanding voting securities Owned by the Subject Person over the designated
percentage threshold, then a Change in Control will be deemed to occur; 
 (ii) there is consummated a merger, consolidation or
similar transaction involving (directly or indirectly) the Company and, immediately after the consummation of such merger, consolidation or similar transaction, the stockholders of the Company immediately prior thereto do not Own, directly or
indirectly, either (A) outstanding voting securities representing more than fifty percent (50%) of the combined outstanding voting power of the surviving Entity in such merger, consolidation or similar transaction or (B) more than fifty
percent (50%) of the combined outstanding voting power of the parent of the surviving Entity in such merger, consolidation or similar transaction, in each case in substantially the same proportions as their Ownership of the outstanding voting
securities of the Company immediately prior to such transaction; 
 (iii) there is consummated a sale, lease, exclusive license or
other disposition of all or substantially all of the consolidated assets of the Company and its Subsidiaries, other than a sale, lease, license or other disposition of all or substantially all of the consolidated assets of the Company and its
Subsidiaries to an Entity, more than fifty percent (50%) of the combined voting power of the voting securities of which are Owned by stockholders of the Company in substantially the same proportions as their Ownership of the outstanding voting
securities of the Company immediately prior to such sale, lease, license or other disposition; or 
 (iv) individuals who, on the date
this Plan is adopted by the Board, are members of the Board (the “Incumbent Board”) cease for any reason to constitute at least a majority of the members of the Board; provided, however, that if the appointment or
election (or nomination for election) of any new Board member was approved or recommended by a majority vote of the members of the Incumbent Board then still in office, such new member will, for purposes of this Plan, be considered as a member of
the Incumbent Board. 
 Notwithstanding the foregoing definition or any other provision of this Plan, (A) the term Change in Control
will not include a sale of assets, merger or other transaction effected exclusively for the purpose of changing the domicile of the Company, and (B) the definition of Change in Control (or any analogous term) in an individual written agreement
between the Company or any Affiliate and the Participant will supersede the foregoing definition with respect to Stock Awards subject to such agreement; provided, however, that if no definition of Change in Control or any analogous term is
set forth in such an individual written agreement, the foregoing definition will apply. 

  
 20. 

 (f) “Code” means the Internal Revenue Code of 1986, as
amended. 
 (g) “Committee” means a committee of one (1) or more Directors to whom authority has been
delegated by the Board in accordance with Section 2(c). 
 (h) “Common Stock” means the common stock of
the Company. 
 (i) “Company” means NexImmune, Inc., a Delaware corporation. 

(j) “Consultant” means any person, including an advisor, who is (i) engaged by the Company or an Affiliate
to render consulting or advisory services and is compensated for such services, or (ii) serving as a member of the board of directors of an Affiliate and is compensated for such services. However, service solely as a Director, or payment of a
fee for such service, will not cause a Director to be considered a “Consultant” for purposes of the Plan. 
 (k)
“Continuous Service” means that the Participant’s service with the Company or an Affiliate, whether as an Employee, Director or Consultant, is not interrupted or terminated. A change in the capacity in which the
Participant renders service to the Company or an Affiliate as an Employee, Director, or Consultant or a change in the Entity for which the Participant renders such service, provided that there is no interruption or termination of the
Participant’s service with the Company or an Affiliate, will not terminate a Participant’s Continuous Service; provided, however, if the Entity for which a Participant is rendering service ceases to qualify as an Affiliate,
as determined by the Board in its sole discretion, such Participant’s Continuous Service will be considered to have terminated on the date such Entity ceases to qualify as an Affiliate. For example, a change in status from an employee of the
Company to a consultant of an Affiliate or to a Director will not constitute an interruption of Continuous Service. To the extent permitted by law, the Board or the chief executive officer of the Company, in that party’s sole discretion, may
determine whether Continuous Service will be considered interrupted in the case of any leave of absence approved by that party, including sick leave, military leave or any other personal leave. Notwithstanding the foregoing, a leave of absence will
be treated as Continuous Service for purposes of vesting in a Stock Award only to such extent as may be provided in the Company’s leave of absence policy, in the written terms of any leave of absence agreement or policy applicable to the
Participant, or as otherwise required by law. 
 (l) “Corporate Transaction” means the occurrence, in a single
transaction or in a series of related transactions, of any one or more of the following events: 
 (i) the consummation of a sale or
other disposition of all or substantially all, as determined by the Board in its sole discretion, of the consolidated assets of the Company and its Subsidiaries; 

(ii) the consummation of a sale or other disposition of at least ninety percent (90%) of the outstanding securities of the Company; 

(iii) the consummation of a merger, consolidation or similar transaction following which the Company is not the surviving corporation;
or 

  
 21. 

 (iv) the consummation of a merger, consolidation or similar transaction following
which the Company is the surviving corporation but the shares of Common Stock outstanding immediately preceding the merger, consolidation or similar transaction are converted or exchanged by virtue of the merger, consolidation or similar transaction
into other property, whether in the form of securities, cash or otherwise. 
 (m) “Director” means a member of
the Board. 
 (n) “Disability” means the inability of a Participant to engage in any substantially gainful
activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than twelve (12) months, and will be
determined by the Board on the basis of such medical evidence as the Board deems warranted under the circumstances. 
 (o)
“Effective Date” means the effective date of this Plan, which is the earlier of (i) the date that this Plan is first approved by the Company’s stockholders, or (ii) the date this Plan is adopted by the
Board. 
 (p) “Employee” means any person employed by the Company or an Affiliate. However, service solely as
a Director, or payment of a fee for such services, will not cause a Director to be considered an “Employee” for purposes of the Plan. 

(q) “Entity” means a corporation, partnership, limited liability company or other entity. 

(r) “Exchange Act” means the Securities Exchange Act of 1934, as amended. 

(s) “Exchange Act Person” means any natural person, Entity or “group” (within the meaning of
Section 13(d) or 14(d) of the Exchange Act), except that “Exchange Act Person” will not include (i) the Company or any Subsidiary of the Company, (ii) any employee benefit plan of the Company or any Subsidiary of the Company
or any trustee or other fiduciary holding securities under an employee benefit plan of the Company or any Subsidiary of the Company, (iii) an underwriter temporarily holding securities pursuant to an offering of such securities, (iv) an
Entity Owned, directly or indirectly, by the stockholders of the Company in substantially the same proportions as their Ownership of stock of the Company; or (v) any natural person, Entity or “group” (within the meaning of
Section 13(d) or 14(d) of the Exchange Act) that, as of the Effective Date of the Plan as set forth in Section 12, is the Owner, directly or indirectly, of securities of the Company representing more than fifty percent (50%) of the
combined voting power of the Company’s then outstanding securities. 
 (t) “Fair Market Value” means, as
of any date, the value of the Common Stock determined by the Board in compliance with Section 409A of the Code or, in the case of an Incentive Stock Option, in compliance with Section 422 of the Code. 

(u) “Incentive Stock Option” means an Option that qualifies as an “incentive stock option” within the
meaning of Section 422 of the Code and the regulations promulgated thereunder. 

  
 22. 

 (v) “Nonstatutory Stock Option” means an Option that does not
qualify as an Incentive Stock Option. 
 (w) “Officer” means any person designated by the Company as an
officer. 
 (x) “Option” means an Incentive Stock Option or a Nonstatutory Stock Option to purchase shares of
Common Stock granted pursuant to the Plan. 
 (y) “Option Agreement” means a written agreement between the
Company and an Option Holder evidencing the terms and conditions of an Option grant. Each Option Agreement will be subject to the terms and conditions of the Plan. 

(z) “Option Holder” means a person to whom an Option is granted pursuant to the Plan or, if applicable, such
other person who holds an outstanding Option. 
 (aa) “Own,” “Owned,”
“Owner,” “Ownership” A person or Entity will be deemed to “Own,” to have “Owned,” to be the “Owner” of, or to have acquired “Ownership” of securities if such
person or Entity, directly or indirectly, through any contract, arrangement, understanding, relationship or otherwise, has or shares voting power, which includes the power to vote or to direct the voting, with respect to such securities. 

(bb) “Participant” means a person to whom a Stock Award is granted pursuant to the Plan or, if applicable, such
other person who holds an outstanding Stock Award. 
 (cc) “Plan” means this NexImmune, Inc. 2011 Equity
Incentive Plan. 
 (dd) “Restricted Stock Award” means an award of shares of Common Stock which is granted
pursuant to the terms and conditions of Section 6(a). 
 (ee) “Restricted Stock Award Agreement” means a
written agreement between the Company and a holder of a Restricted Stock Award evidencing the terms and conditions of a Restricted Stock Award. Each Restricted Stock Award Agreement will be subject to the terms and conditions of the Plan. 

(ff) “Restricted Stock Unit Award” means a right to receive shares of Common Stock which is granted pursuant to
the terms and conditions of Section 6(b). 
 (gg) “Restricted Stock Unit Award Agreement” means a written
agreement between the Company and a holder of a Restricted Stock Unit Award evidencing the terms and conditions of a Restricted Stock Unit Award grant. Each Restricted Stock Unit Award Agreement will be subject to the terms and conditions of the
Plan. 
 (hh) “Securities Act” means the Securities Act of 1933, as amended. 

(ii) “Stock Appreciation Right” means a right to receive the appreciation on Common Stock that is granted
pursuant to the terms and conditions of Section 6(c). 

  
 23. 

 (jj) “Stock Appreciation Right Agreement” means a written
agreement between the Company and a holder of a Stock Appreciation Right evidencing the terms and conditions of a Stock Appreciation Right grant. Each Stock Appreciation Right Agreement will be subject to the terms and conditions of the Plan. 

(kk) “Stock Award” means any right to receive Common Stock granted under the Plan, including an Incentive Stock
Option, a Nonstatutory Stock Option, a Restricted Stock Award, a Restricted Stock Unit Award, or a Stock Appreciation Right. 
 (ll)
“Stock Award Agreement” means a written agreement between the Company and a Participant evidencing the terms and conditions of a Stock Award grant. Each Stock Award Agreement will be subject to the terms and conditions of
the Plan. 
 (mm) “Subsidiary” means, with respect to the Company, (i) any corporation of which more than
fifty percent (50%) of the outstanding capital stock having ordinary voting power to elect a majority of the board of directors of such corporation (irrespective of whether, at the time, stock of any other class or classes of such corporation will
have or might have voting power by reason of the happening of any contingency) is at the time, directly or indirectly, Owned by the Company, and (ii) any partnership, limited liability company or other entity in which the Company has a direct
or indirect interest (whether in the form of voting or participation in profits or capital contribution) of more than fifty percent (50%) . 

(nn) “Ten Percent Stockholder” means a person who Owns (or is deemed to Own pursuant to Section 424(d) of
the Code) stock possessing more than ten percent (10%) of the total combined voting power of all classes of stock of the Company or any Affiliate. 

  
 24. 

 Exhibit 10.3.1A 

Execution Version 
 AMENDMENT

 TO 
 NEXIMMUNE,
INC. 
 2018 EQUITY INCENTIVE PLAN 

In accordance with those certain resolutions adopted by the Board of Directors and stockholders of NexImmune, Inc., a Delaware corporation
(the “Company”), the 2018 Equity Incentive Plan (the “Plan”) of the Company is hereby amended as follows: 

1. Section 3(a) of the Plan is hereby amended and restated in its entirety to increase the number of shares reserved for issuance under the Plan as
follows: 
 “(a) Share Reserve. Subject to Section 9(a) relating to Capitalization Adjustments, the
aggregate number of shares of Common Stock of the Company that may be issued pursuant to Stock Awards after the Effective Date will not exceed 42,643,980 shares. For clarity, the limitation in this Section 3(a) is a limitation in the number of
shares of Common Stock that may be issued pursuant to the Plan. Accordingly, this Section 3(a) does not limit the granting of Stock Awards except as provided in Section 7(a).” 

2. Unless otherwise expressly provided for in this Amendment to the Plan (this “Amendment”), all capitalized words, phrases, or defined
terms used in this Amendment will have the same meaning ascribed to them in the Plan. 
 3. Except as expressly set forth in this Amendment, there have been
no other changes or modifications to the Plan, and the Plan remains otherwise unchanged and in full force and effect. 
 4. This Amendment shall be effective
as of July 31, 2018. 
 [signature page follows] 

 IN WITNESS WHEREOF, the undersigned has caused this Amendment to be executed effective as of
the date set forth above. 
  

			
	NEXIMMUNE, INC.,
	A Delaware corporation
		
	By:	 	 /s/ Alain Cappeluti

		 	Alain Cappeluti, Chief Financial Officer

 [Signature Page to Amendment to the Plan] 

 Exhibit 10.3.1B 

AMENDMENT NO. 2 
 TO

 NEXIMMUNE, INC. 

2018 EQUITY INCENTIVE PLAN 

In accordance with those certain resolutions adopted by the Board of Directors and stockholders of NexImmune, Inc., a Delaware corporation
(the “Company”), the 2018 Equity Incentive Plan (the “Plan”) of the Company is hereby amended as follows: 

1. Section 3(a) of the Plan is hereby amended and restated in its entirety to increase the number of shares reserved for issuance under the Plan as
follows: 
 “(a) Share Reserve. Subject to Section 9(a) relating to Capitalization Adjustments, the
aggregate number of shares of Common Stock of the Company that may be issued pursuant to Stock Awards after the Effective Date will not exceed 31,234,675 shares. For clarity, the limitation in this Section 3(a) is a limitation in the number of
shares of Common Stock that may be issued pursuant to the Plan. Accordingly, this Section 3(a) does not limit the granting of Stock Awards except as provided in Section 7(a).” 

2. Unless otherwise expressly provided for in this Amendment No. 2 to the Plan (this “Amendment”), all capitalized words, phrases,
or defined terms used in this Amendment will have the same meaning ascribed to them in the Plan. 
 3. Except as expressly set forth in this Amendment, there
have been no other changes or modifications to the Plan, and the Plan remains otherwise unchanged and in full force and effect. 
 4. This Amendment shall be
effective as of June 18, 2019. 
 [signature page follows] 

 IN WITNESS WHEREOF, the undersigned has caused this Amendment to be executed effective as of the date set
forth above. 
  

			
	NEXIMMUNE, INC.,
	A Delaware corporation
		
	By:	 	 /s/ Scott Carmer

		 	Scott Carmer, Chief Executive Officer

 [Signature Page to Amendment to the Plan] 

 Exhibit 10.3.1C 

AMENDMENT NO. 3 
 TO

 NEXIMMUNE, INC. 

2018 EQUITY INCENTIVE PLAN 

In accordance with those certain resolutions adopted by the Board of Directors and stockholders of NexImmune, Inc., a Delaware corporation
(the “Company”), the 2018 Equity Incentive Plan (the “Plan”) of the Company is hereby amended as follows: 

1. Section 3(a) of the Plan is hereby amended and restated in its entirety to increase the number of shares reserved for issuance under the Plan as
follows: 
 “(a) Share Reserve. Subject to Section 9(a) relating to Capitalization Adjustments, the
aggregate number of shares of Common Stock of the Company that may be issued pursuant to Stock Awards after the Effective Date will not exceed 64,319,222 shares. For clarity, the limitation in this Section 3(a) is a limitation in the number of
shares of Common Stock that may be issued pursuant to the Plan. Accordingly, this Section 3(a) does not limit the granting of Stock Awards except as provided in Section 7(a).” 

2. Section 3(c) of the Plan is hereby amended and restated in its entirety as follows: 

“(c) Incentive Stock Option Limit. Notwithstanding anything to the contrary in this Section 3(c),
subject to the provisions of Section 9(a) relating to Capitalization Adjustments, the aggregate maximum number of shares of Common Stock that may be issued pursuant to the exercise of Incentive Stock Options will be 64,319,222 shares of Common
Stock.” 
 3. Unless otherwise expressly provided for in this Amendment No. 3 to the Plan (this “Amendment” all capitalized
words, phrases, or defined terms used in this Amendment will have the same meaning), ascribed to them in the Plan. 
 4. Except as expressly set forth in
this Amendment, there have been no other changes or modifications to the Plan, and the Plan remains otherwise unchanged and in full force and effect. 
 5.
This Amendment shall be effective as of January 6, 2021. 
 [signature page follows] 

 IN WITNESS WHEREOF, the undersigned has caused this Amendment to be executed
effective as of the date set forth above. 
  

			
	NEXIMMUNE, INC.,
	A Delaware corporation
		
	By:	 	 /s/ John Trainer

	Name:	 	John Trainer
	Title:	 	CFO

 [Signature Page to Amendment to the Plan] 

 Exhibit 10.3.1D 

AMENDMENT NO. 4 
 TO

 NEXIMMUNE, INC. 

2018 EQUITY INCENTIVE PLAN 

In accordance with those certain resolutions adopted by the Board of Directors and stockholders of NexImmune, Inc., a Delaware corporation
(the “Company”), the 2018 Equity Incentive Plan (the “Plan”) of the Company is hereby amended as follows: 

1. Section 3(a) of the Plan is hereby amended and restated in its entirety to increase the number of shares reserved for issuance under the Plan as
follows: 
 “(a) Share Reserve. Subject to Section 9(a) relating to Capitalization Adjustments, the
aggregate number of shares of Common Stock of the Company that may be issued pursuant to Stock Awards after the Effective Date will not exceed 74,319,222 shares. For clarity, the limitation in this Section 3(a) is a limitation in the number of
shares of Common Stock that may be issued pursuant to the Plan. Accordingly, this Section 3(a) does not limit the granting of Stock Awards except as provided in Section 7(a).” 

2. Section 3(c) of the Plan is hereby amended and restated in its entirety as follows: 

“(c) Incentive Stock Option Limit. Notwithstanding anything to the contrary in this Section 3(c),
subject to the provisions of Section 9(a) relating to Capitalization Adjustments, the aggregate maximum number of shares of Common Stock that may be issued pursuant to the exercise of Incentive Stock Options will be 74,319,222 shares of Common
Stock.” 
 3. Unless otherwise expressly provided for in this Amendment No. 4 to the Plan (this “Amendment”), all
capitalized words, phrases, or defined terms used in this Amendment will have the same meaning ascribed to them in the Plan. 
 4. Except as expressly set
forth in this Amendment, there have been no other changes or modifications to the Plan, and the Plan remains otherwise unchanged and in full force and effect. 

5. This Amendment shall be effective as of January 6, 2021. 

[signature page follows] 

 IN WITNESS WHEREOF, the undersigned has caused this Amendment to be executed effective as of
the date set forth above. 
  

			
	NEXIMMUNE, INC.,
	A Delaware corporation
		
	By:	 	 /s/ John Trainer

	Name:	 	John Trainer
	Title:	 	CFO

 [Signature Page to Amendment to the Plan]

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