EX-10.27





 Exhibit 10.27 

ADICET BIO, INC. 
 2015
STOCK INCENTIVE PLAN 
 1.    Purposes of the Plan. The purposes of this Plan are to attract and retain the
best available personnel, to provide additional incentives to Employees, Directors and Consultants and to promote the success of the Company’s business. 

2.    Definitions. The following definitions shall apply as used herein and in the individual Award Agreements
except as defined otherwise in an individual Award Agreement. In the event a term is separately defined in an individual Award Agreement, such definition shall supersede the definition contained in this Section 2. 

(a)    “Administrator” means the Board or any of the Committees appointed to administer the Plan. 

(b)    “Applicable Laws” means the legal requirements relating to the Plan and the Awards under
applicable provisions of federal and state securities laws, the corporate laws of California and, to the extent other than California, the corporate law of the state of the Company’s incorporation, the Code, the rules of any applicable stock
exchange or national market system, and the rules of any non-U.S. jurisdiction applicable to Awards granted to residents therein. 

(c)    “Assumed” means that pursuant to a Corporate Transaction either (i) the Award is expressly
affirmed by the Company or (ii) the contractual obligations represented by the Award are expressly assumed (and not simply by operation of law) by the successor entity or its Parent in connection with the Corporate Transaction with appropriate
adjustments to the number and type of securities of the successor entity or its Parent subject to the Award and the exercise or purchase price thereof which at least preserves the compensation element of the Award existing at the time of the
Corporate Transaction as determined in accordance with the instruments evidencing the agreement to assume the Award. 

(d)    “Award” means the grant of an Option, SAR, Dividend Equivalent Right, Restricted Stock, Restricted
Stock Unit or other right or benefit under the Plan. 
 (e)    “Award Agreement” means the written
agreement evidencing the grant of an Award executed by the Company and the Grantee, including any amendments thereto. 

(f)    “Board” means the Board of Directors of the Company. 

(g)    “Cause” means, with respect to the termination by the Company or a Related Entity of the
Grantee’s Continuous Service, that such termination is for “Cause” as such term (or word of like import) is expressly defined in a then-effective written agreement between the Grantee and the Company or such Related Entity, or in the
absence of such then-effective written agreement and definition, is based on, in the determination of the Administrator, the Grantee’s: (i) performance of any act or failure to perform any act in bad faith and to the detriment of the
Company or a Related Entity; (ii) dishonesty, intentional misconduct or material breach of any agreement with the Company or a Related Entity; or (iii) commission of a crime 

  
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involving dishonesty, breach of trust, or physical or emotional harm to any person; provided, however, that with regard to any agreement that defines “Cause” on the occurrence of or in
connection with a Corporate Transaction, such definition of “Cause” shall not apply until a Corporate Transaction actually occurs. 

(h)    “Code” means the Internal Revenue Code of 1986, as amended. 

(i)    “Committee” means any committee composed of members of the Board appointed by the Board to
administer the Plan. 
 (j)    “Common Stock” means the common stock of the Company. 

(k)    “Company” means Adicet Bio, Inc., a Delaware corporation, or any successor entity that adopts the
Plan in connection with a Corporate Transaction. 
 (l)    “Consultant” means any person (other than an
Employee or a Director, solely with respect to rendering services in such person’s capacity as a Director) who is engaged by the Company or any Related Entity to render consulting or advisory services to the Company or such Related Entity. 

(m)    “Continuous Service” means that the provision of services to the Company or a Related Entity in
any capacity of Employee, Director or Consultant is not interrupted or terminated. In jurisdictions requiring notice in advance of an effective termination as an Employee, Director or Consultant, Continuous Service shall be deemed terminated upon
the actual cessation of providing services to the Company or a Related Entity notwithstanding any required notice period that must be fulfilled before a termination as an Employee, Director or Consultant can be effective under Applicable Laws. A
Grantee’s Continuous Service shall be deemed to have terminated either upon an actual termination of Continuous Service or upon the entity for which the Grantee provides services ceasing to be a Related Entity. Continuous Service shall not be
considered interrupted in the case of (i) any approved leave of absence, (ii) transfers among the Company, any Related Entity, or any successor, in any capacity of Employee, Director or Consultant, or (iii) any change in status as
long as the individual remains in the service of the Company or a Related Entity in any capacity of Employee, Director or Consultant (except as otherwise provided in the Award Agreement). Notwithstanding the foregoing, except as otherwise determined
by the Administrator, in the event of any spin-off of a Related Entity, service as an Employee, Director or Consultant for such Related Entity following such spin-off
shall be deemed to be Continuous Service for purposes of the Plan and any Award under the Plan. An approved leave of absence shall include sick leave, military leave, or any other authorized personal leave. For purposes of each Incentive Stock
Option granted under the Plan, if such leave exceeds three (3) months, and reemployment upon expiration of such leave is not guaranteed by statute or contract, then the Incentive Stock Option shall be treated as a Non-Qualified Stock Option on
the day three (3) months and one (1) day following the expiration of such three (3) month period. 

(n)    “Corporate Transaction” means any of the following transactions, provided, however, that the
Administrator shall determine under parts (iv) and (v) whether multiple transactions are related, and its determination shall be final, binding and conclusive: 

(i)    a merger or consolidation in which the Company is not the surviving entity, except for a transaction the principal
purpose of which is to change the state in which the Company is incorporated; 

  
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 (ii)    the sale, transfer or other disposition of all or substantially
all of the assets of the Company; 
 (iii)    the complete liquidation or dissolution of the Company; 

(iv)    any reverse merger or series of related transactions culminating in a reverse merger (including, but not limited
to, a tender offer followed by a reverse merger) in which the Company is the surviving entity but (A) the shares of Common Stock outstanding immediately prior to such merger are converted or exchanged by virtue of the merger into other
property, whether in the form of securities, cash or otherwise, or (B) in which securities possessing more than fifty percent (50%) of the total combined voting power of the Company’s outstanding securities are transferred to a person or
persons different from those who held such securities immediately prior to such merger or the initial transaction culminating in such merger, but excluding any such transaction or series of related transactions that the Administrator determines
shall not be a Corporate Transaction; or 
 (v)    acquisition in a single or series of related transactions by any
person or related group of persons (other than the Company or by a Company-sponsored employee benefit plan) of beneficial ownership (within the meaning of Rule 13d-3 of the Exchange Act) of securities
possessing more than fifty percent (50%) of the total combined voting power of the Company’s outstanding securities but excluding any such transaction or series of related transactions that the Administrator determines shall not be a Corporate
Transaction. 
 (o)    “Covered Employee” means an Employee who is a “covered employee” under
Section 162(m)(3) of the Code. 
 (p)    “Director” means a member of the Board or the board of
directors of any Related Entity. 
 (q)    “Disability” means as defined under the long-term disability
policy of the Company or the Related Entity to which the Grantee provides services regardless of whether the Grantee is covered by such policy. If the Company or the Related Entity to which the Grantee provides service does not have a long-term
disability plan in place, “Disability” means that a Grantee is unable to carry out the responsibilities and functions of the position held by the Grantee by reason of any medically determinable physical or mental impairment for a period of
not less than ninety (90) consecutive days. A Grantee will not be considered to have incurred a Disability unless he or she furnishes proof of such impairment sufficient to satisfy the Administrator in its discretion. 

(r)    “Dividend Equivalent Right” means a right entitling the Grantee to compensation measured by
dividends paid with respect to Common Stock. 

  
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 (s)    “Employee” means any person, including an
Officer or Director, who is in the employ of the Company or any Related Entity, subject to the control and direction of the Company or any Related Entity as to both the work to be performed and the manner and method of performance. The payment of a
director’s fee by the Company or a Related Entity shall not be sufficient to constitute “employment” by the Company. 

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

(u)    “Fair Market Value” means, as of any date, the value of Common Stock determined as follows: 

(i)    If the Common Stock is listed on one or more established stock exchanges or national market systems, including
without limitation The NASDAQ Global Select Market, The NASDAQ Global Market or The NASDAQ Capital Market of The NASDAQ Stock Market LLC, its Fair Market Value shall be the closing sales price for such stock (or the closing bid, if no sales were
reported) as quoted on the principal exchange or system on which the Common Stock is listed (as determined by the Administrator) on the date of determination (or, if no closing sales price or closing bid was reported on that date, as applicable, on
the last trading date such closing sales price or closing bid was reported), as reported in The Wall Street Journal or such other source as the Administrator deems reliable; 

(ii)    If the Common Stock is regularly quoted on an automated quotation system (including the OTC Bulletin Board) or by
a recognized securities dealer, its Fair Market Value shall be the closing sales price for such stock as quoted on such system or by such securities dealer on the date of determination, but if selling prices are not reported, the Fair Market Value
of a share of Common Stock shall be the mean between the high bid and low asked prices for the Common Stock on the date of determination (or, if no such prices were reported on that date, on the last date such prices were reported), as reported in
The Wall Street Journal or such other source as the Administrator deems reliable; or 
 (iii)    In the absence of an
established market for the Common Stock of the type described in (i) and (ii), above, the Fair Market Value thereof shall be determined by the Administrator in good faith and in a manner consistent with Applicable Laws. 

(v)    “Grantee” means an Employee, Director or Consultant who receives an Award under the Plan. 

(w)    “Immediate Family” means any child, stepchild, grandchild, parent, stepparent, grandparent,
spouse, former spouse, sibling, niece, nephew, mother-in-law, father-in-law, son-in law, daughter-in-law, brother-in-law, or sister-in-law, including adoptive relationships, any person sharing the Grantee’s household (other than a tenant or employee), a trust in which these persons (or the
Grantee) have more than fifty percent (50%) of the beneficial interest, a foundation in which these persons (or the Grantee) control the management of assets, and any other entity in which these persons (or the Grantee) own more than fifty percent
(50%) of the voting interests. 
 (x)    “Incentive Stock Option” means an Option intended to qualify
as an incentive stock option within the meaning of Section 422 of the Code. 

  
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 (y)    “Non-Qualified
Stock Option” means an Option not intended to qualify as an Incentive Stock Option. 

(z)    “Officer” means a person who is an officer of the Company or a Related Entity within the meaning
of Section 16 of the Exchange Act and the rules and regulations promulgated thereunder. 

(aa)    “Option” means an option to purchase Shares pursuant to an Award Agreement granted under the
Plan. 
 (bb)    “Parent” means a “parent corporation”, whether now or hereafter existing, as
defined in Section 424(e) of the Code. 
 (cc)    “Performance-Based Compensation” means
compensation qualifying as “performance-based compensation” under Section 162(m) of the Code. 

(dd)    “Plan” means this 2015 Stock Incentive Plan. 

(ee)    “Post-Termination Exercise Period” means the period specified in the Award Agreement of not less
than thirty (30) days commencing on the date of termination (other than termination by the Company or any Related Entity for Cause) of the Grantee’s Continuous Service, or such longer period as may be applicable upon death or Disability.

 (ff)    “Registration Date” means the first to occur of: (i) the closing of the first sale to
the general public pursuant to a registration statement filed with and declared effective by the Securities and Exchange Commission under the Securities Act of 1933, as amended, of (A) the Common Stock or (B) the same class of securities
of a successor corporation (or its Parent) issued pursuant to a Corporate Transaction in exchange for or in substitution of the Common Stock; or (ii) in the event of a Corporate Transaction, the date of the consummation of the Corporate
Transaction if the same class of securities of the successor corporation (or its Parent) issuable in such Corporate Transaction shall have been sold to the general public pursuant to a registration statement filed with and declared effective by the
Securities and Exchange Commission under the Securities Act of 1933, as amended, on or prior to the date of consummation of such Corporate Transaction. 

(gg)    “Related Entity” means any Parent or Subsidiary of the Company. 

(hh)    “Replaced” means that pursuant to a Corporate Transaction the Award is replaced with a
comparable stock award or a cash incentive program of the Company, the successor entity (if applicable) or Parent of either of them which preserves the compensation element of such Award existing at the time of the Corporate Transaction and provides
for subsequent payout in accordance with the same (or a more favorable) vesting schedule applicable to such Award. The determination of Award comparability shall be made by the Administrator and its determination shall be final, binding and
conclusive. 
 (ii)    “Restricted Stock” means Shares issued under the Plan to the Grantee for such
consideration, if any, and subject to such restrictions on transfer, rights of first refusal, repurchase provisions, forfeiture provisions, and other terms and conditions as established by the Administrator. 

  
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 (jj)    “Restricted Stock Units” means an Award which
may be earned in whole or in part upon the passage of time or the attainment of performance criteria established by the Administrator and which may be settled for cash, Shares or other securities or a combination of cash, Shares or other securities
as established by the Administrator. 
 (kk)    “Rule 16b-3” means Rule 16b-3 promulgated under the Exchange Act or any successor thereto. 

(ll)    “SAR” means a stock appreciation right entitling the Grantee to Shares or cash compensation, as
established by the Administrator, measured by appreciation in the value of Common Stock. 

(mm)    “Share” means a share of the Common Stock. 

(nn)    “Subsidiary” means a “subsidiary corporation”, whether now or hereafter existing, as
defined in Section 424(f) of the Code. 
 3.    Stock Subject to the Plan. 

(a)    Subject to the provisions of Section 10 below, the maximum aggregate number of Shares which may be issued
pursuant to all Awards (including Incentive Stock Options) is 21,594,044 Shares. The Shares may be authorized, but unissued, or reacquired Common Stock. 

(b)    Any Shares covered by an Award (or portion of an Award) which is forfeited, canceled or expires (whether
voluntarily or involuntarily) shall be deemed not to have been issued for purposes of determining the maximum aggregate number of Shares which may be issued under the Plan. Shares that actually have been issued under the Plan pursuant to an Award
shall not be returned to the Plan and shall not become available for future issuance under the Plan, except that if unvested Shares are forfeited or repurchased by the Company, such Shares shall become available for future grant under the Plan. To
the extent not prohibited by the listing requirements of The NASDAQ Stock Market LLC (or other established stock exchange or national market system on which the Common Stock is traded) or Applicable Laws, any Shares covered by an Award which are
surrendered: (i) in payment of the Award exercise or purchase price (including pursuant to the “net exercise” of an option pursuant to Section 7(b)(vi)); or (ii) in satisfaction of tax withholding obligations incident to the
exercise of an Award shall be deemed not to have been issued for purposes of determining the maximum number of Shares which may be issued pursuant to all Awards under the Plan, unless otherwise determined by the Administrator. 

  
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 4.    Administration of the Plan. 

(a)    Plan Administrator. 

(i)    Administration with Respect to Directors and Officers. Prior to the Registration Date, with respect to
grants of Awards to Directors or Employees who are also Officers or Directors of the Company, the Plan shall be administered by (A) the Board or (B) a Committee designated by the Board, which Committee shall be constituted in such a manner
as to satisfy the Applicable Laws. On or after the Registration Date, with respect to grants of Awards to Directors or Employees who are also Officers or Directors of the Company, the Plan shall be administered by (A) the Board or (B) a
Committee designated by the Board, which Committee shall be constituted in such a manner as to satisfy the Applicable Laws and to permit such grants and related transactions under the Plan to be exempt from Section 16(b) of the Exchange Act in
accordance with Rule 16b-3. Once appointed, such Committee shall continue to serve in its designated capacity until otherwise directed by the Board. 

(ii)    Administration With Respect to Consultants and Other Employees. With respect to grants of Awards to
Employees or Consultants who are neither Directors nor Officers of the Company, the Plan shall be administered by (A) the Board or (B) a Committee designated by the Board, which Committee shall be constituted in such a manner as to satisfy
the Applicable Laws. Once appointed, such Committee shall continue to serve in its designated capacity until otherwise directed by the Board. 

(iii)    Administration With Respect to Covered Employees. Notwithstanding the foregoing, as of and after the date
that the exemption for the Plan under Section 162(m) of the Code expires, as set forth in Section 19 below, grants of Awards to any Covered Employee intended to qualify as Performance-Based Compensation shall be made only by a Committee
(or subcommittee of a Committee) which is comprised solely of two or more Directors eligible to serve on a committee making Awards qualifying as Performance-Based Compensation. In the case of such Awards granted to Covered Employees, references to
the “Administrator” or to a “Committee” shall be deemed to be references to such Committee or subcommittee. 

(b)    Multiple Administrative Bodies. The Plan may be administered by different bodies with respect to Directors,
Officers, Consultants, and Employees who are neither Directors nor Officers. 
 (c)    Powers of the
Administrator. Subject to Applicable Laws and the provisions of the Plan (including any other powers given to the Administrator hereunder), and except as otherwise provided by the Board, the Administrator shall have the authority, in its
discretion: 
 (i)    to select the Employees, Directors and Consultants to whom Awards may be granted from time to
time hereunder; 
 (ii)    to determine whether and to what extent Awards are granted hereunder; 

  
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 (iii)    to determine the number of Shares or the amount of other
consideration to be covered by each Award granted hereunder; 
 (iv)    to approve forms of Award Agreements for use
under the Plan; 
 (v)    to determine the terms and conditions of any Award granted hereunder; 

(vi)    to establish additional terms, conditions, rules or procedures to accommodate the rules or laws of applicable non-U.S. jurisdictions and to afford Grantees favorable treatment under such rules or laws; provided, however, that no Award shall be granted under any such additional terms, conditions, rules or procedures with
terms or conditions which are inconsistent with the provisions of the Plan; 
 (vii)    to amend the terms of any
outstanding Award granted under the Plan, provided that any amendment that would adversely affect the Grantee’s rights under an outstanding Award shall not be made without the Grantee’s written consent, provided, however, that an amendment
or modification that may cause an Incentive Stock Option to become a Non-Qualified Stock Option shall not be treated as adversely affecting the rights of the Grantee. Notwithstanding the foregoing,
(A) the reduction or increase of the exercise price of any Option awarded under the Plan and the base appreciation amount of any SAR awarded under the Plan and (B) canceling an Option or SAR at a time when its exercise price or base
appreciation amount (as applicable) exceeds the Fair Market Value of the underlying Shares, in exchange for another Option, SAR, Restricted Stock, or other Award or for cash, in each case, shall not be subject to stockholder approval; 

(viii)    to construe and interpret the terms of the Plan and Awards, including without limitation, any notice of award
or Award Agreement, granted pursuant to the Plan; and 
 (ix)    to take such other action, not inconsistent
with the terms of the Plan, as the Administrator deems appropriate. 
 The express grant in the Plan of any specific power to the Administrator shall not be
construed as limiting any power or authority of the Administrator; provided that the Administrator may not exercise any right or power reserved to the Board. Any decision made, or action taken, by the Administrator or in connection with the
administration of this Plan shall be final, conclusive and binding on all persons having an interest in the Plan. 

(d)    Indemnification. In addition to such other rights of indemnification as they may have as members of the
Board or as Officers or Employees of the Company or a Related Entity, members of the Board and any Officers or Employees of the Company or a Related Entity to whom authority to act for the Board, the Administrator or the Company is delegated shall
be defended and indemnified by the Company to the extent permitted by law on an after-tax basis against all reasonable expenses, including attorneys’ fees, actually and necessarily incurred in connection
with the defense of any claim, investigation, action, suit or proceeding, or in connection with any appeal therein, to which they or any of them may be a party by reason of any action taken or failure to act under or in connection with the Plan, or
any Award granted 

  
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hereunder, and against all amounts paid by them in settlement thereof (provided such settlement is approved by the Company) or paid by them in satisfaction of a judgment in any such claim,
investigation, action, suit or proceeding, except in relation to matters as to which it shall be adjudged in such claim, investigation, action, suit or proceeding that such person is liable for gross negligence, bad faith or intentional misconduct;
provided, however, that within thirty (30) days after the institution of such claim, investigation, action, suit or proceeding, such person shall offer to the Company, in writing, the opportunity at the Company’s expense to defend the
same. 
 5.    Eligibility. Awards other than Incentive Stock Options may be granted to Employees, Directors and
Consultants. Incentive Stock Options may be granted only to Employees of the Company or a Parent or a Subsidiary of the Company. An Employee, Director or Consultant who has been granted an Award may, if otherwise eligible, be granted additional
Awards. Awards may be granted to such Employees, Directors or Consultants who are residing in non-U.S. jurisdictions as the Administrator may determine from time to time. 

6.    Terms and Conditions of Awards. 

(a)    Types of Awards. The Administrator is authorized under the Plan to award any type of arrangement to an
Employee, Director or Consultant that is not inconsistent with the provisions of the Plan and that by its terms involves or might involve the issuance of (i) Shares, (ii) cash or (iii) an Option, a SAR, or similar right with a fixed
or variable price related to the Fair Market Value of the Shares and with an exercise or conversion privilege related to the passage of time, the occurrence of one or more events, or the satisfaction of performance criteria or other conditions. Such
awards include, without limitation, Options, SARs, sales or bonuses of Restricted Stock, Restricted Stock Units or Dividend Equivalent Rights, and an Award may consist of one such security or benefit, or two (2) or more of them in any
combination or alternative. 
 (b)    Designation of Award. Each Award shall be designated in the Award
Agreement. In the case of an Option, the Option shall be designated as either an Incentive Stock Option or a Non-Qualified Stock Option. However, notwithstanding such designation, an Option will qualify as an
Incentive Stock Option under the Code only to the extent the $100,000 limitation of Section 422(d) of the Code is not exceeded. The $100,000 limitation of Section 422(d) of the Code is calculated based on the aggregate Fair Market Value of
the Shares subject to Options designated as Incentive Stock Options which become exercisable for the first time by a Grantee during any calendar year (under all plans of the Company or any Parent or Subsidiary of the Company). For purposes of this
calculation, Incentive Stock Options shall be taken into account in the order in which they were granted, and the Fair Market Value of the Shares shall be determined as of the grant date of the relevant Option. In the event that the Code or the
regulations promulgated thereunder are amended after the date the Plan becomes effective to provide for a different limit on the Fair Market Value of Shares permitted to be subject to Incentive Stock Options, then such different limit will be
automatically incorporated herein and will apply to any Options granted after the effective date of such amendment. 

(c)    Conditions of Award. Subject to the terms of the Plan, the Administrator shall determine the provisions,
terms, and conditions of each Award including, but not limited to, 

  
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the Award vesting schedule, repurchase provisions, rights of first refusal, forfeiture provisions, form of payment (cash, Shares, or other consideration) upon settlement of the Award, payment
contingencies, and satisfaction of any performance criteria. The performance criteria established by the Administrator may be based on any one of, or combination of, increase in share price, earnings per share, total stockholder return, return on
equity, return on assets, return on investment, net operating income, cash flow, revenue, economic value added, personal management objectives, or other measure of performance selected by the Administrator. Partial achievement of the specified
criteria may result in a payment or vesting corresponding to the degree of achievement as specified in the Award Agreement. In addition, the performance criteria shall be calculated in accordance with generally accepted accounting principles, but
excluding the effect (whether positive or negative) of any change in accounting standards and any extraordinary, unusual or nonrecurring item, as determined by the Administrator, occurring after the establishment of the performance criteria
applicable to the Award intended to be performance-based compensation. Each such adjustment, if any, shall be made solely for the purpose of providing a consistent basis from period to period for the calculation of performance criteria in order to
prevent the dilution or enlargement of the Grantee’s rights with respect to an Award intended to be performance-based compensation. 

(d)    Acquisitions and Other Transactions. The Administrator may issue Awards under the Plan in settlement,
assumption or substitution for, outstanding awards or obligations to grant future awards in connection with the Company or a Related Entity acquiring another entity, an interest in another entity or an additional interest in a Related Entity whether
by merger, stock purchase, asset purchase or other form of transaction. 
 (e)    Deferral of Award Payment. The
Administrator may establish one or more programs under the Plan to permit selected Grantees the opportunity to elect to defer receipt of consideration upon exercise of an Award, satisfaction of performance criteria, or other event that absent the
election would entitle the Grantee to payment or receipt of Shares or other consideration under an Award. The Administrator may establish the election procedures, the timing of such elections, the mechanisms for payments of, and accrual of interest
or other earnings, if any, on amounts, Shares or other consideration so deferred, and such other terms, conditions, rules and procedures that the Administrator deems advisable for the administration of any such deferral program. 

(f)    Separate Programs. The Administrator may establish one or more separate programs under the Plan for the
purpose of issuing particular forms of Awards to one or more classes of Grantees on such terms and conditions as determined by the Administrator from time to time. 

(g)    Individual Limitations on Awards. 

(i)    Individual Option and SAR Limit. Following the date that the exemption from application of
Section 162(m) of the Code described in Section 19 (or any exemption having similar effect) ceases to apply to Awards, the maximum number of Shares with respect to which Options and SARs may be granted to any Grantee in any calendar year
shall be 4,000,000 Shares. In connection with a Grantee’s commencement of Continuous Service, a Grantee may be granted Options and SARs for up to an additional 100,000 Shares 

  
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which shall not count against the limit set forth in the previous sentence. The foregoing limitations shall be adjusted proportionately in connection with any change in the Company’s
capitalization pursuant to Section 10, below. To the extent required by Section 162(m) of the Code or the regulations thereunder, in applying the foregoing limitations with respect to a Grantee, if any Option or SAR is canceled, the
canceled Option or SAR shall continue to count against the maximum number of Shares with respect to which Options and SARs may be granted to the Grantee. For this purpose, the repricing of an Option (or in the case of a SAR, the base amount on which
the stock appreciation is calculated is reduced to reflect a reduction in the Fair Market Value of the Common Stock) shall be treated as the cancellation of the existing Option or SAR and the grant of a new Option or SAR. 

(ii)    Individual Limit for Restricted Stock and Restricted Stock Units. Following the date that the exemption
from application of Section 162(m) of the Code described in Section 19 (or any exemption having similar effect) ceases to apply to Awards, for awards of Restricted Stock and Restricted Stock Units that are intended to be Performance-Based
Compensation, the maximum number of Shares with respect to which such Awards may be granted to any Grantee in any calendar year shall be 4,000,000 Shares. The foregoing limitation shall be adjusted proportionately in connection with any change in
the Company’s capitalization pursuant to Section 10, below. 
 (h)    Early Exercise. The Award
Agreement may, but need not, include a provision whereby the Grantee may elect at any time while an Employee, Director or Consultant to exercise any part or all of the Award prior to full vesting of the Award. Any unvested Shares received pursuant
to such exercise may be subject to a repurchase right in favor of the Company or a Related Entity or to any other restriction the Administrator determines to be appropriate. 

(i)    Term of Award. The term of each Award shall be the term stated in the Award Agreement, provided, however,
that the term shall be no more than ten (10) years from the date of grant thereof. However, in the case of an Incentive Stock Option granted to a Grantee who, at the time the Option is granted, owns stock representing more than ten percent
(10%) of the voting power of all classes of stock of the Company or any Parent or Subsidiary of the Company, the term of the Incentive Stock Option shall be five (5) years from the date of grant thereof or such shorter term as may be provided
in the Award Agreement. Notwithstanding the foregoing, the specified term of any Award shall not include any period for which the Grantee has elected to defer the receipt of the Shares or cash issuable pursuant to the Award. 

(j)    Transferability of Awards. Incentive Stock Options may not be sold, pledged, assigned, hypothecated,
transferred, or disposed of in any manner other than by will or by the laws of descent or distribution and may be exercised, during the lifetime of the Grantee, only by the Grantee. Other Awards shall be transferable (i) by will and by the laws
of descent and distribution and (ii) during the lifetime of the Grantee, to the extent and in the manner authorized by the Administrator by gift or pursuant to a domestic relations order to members of the Grantee’s Immediate Family.
Notwithstanding the foregoing, the Grantee may designate one or more beneficiaries of the Grantee’s Award in the event of the Grantee’s death on a beneficiary designation form provided by the Administrator. 

  
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 (k)    Time of Granting Awards. The date of grant of an Award
shall for all purposes be the date on which the Administrator makes the determination to grant such Award, or such other later date as is determined by the Administrator. 

7.    Award Exercise or Purchase Price, Consideration and Taxes. 

(a)    Exercise or Purchase Price. The exercise or purchase price, if any, for an Award shall be as follows: 

(i)    In the case of an Incentive Stock Option: 

(A)    granted to an Employee who, at the time of the grant of such Incentive Stock Option owns stock representing more
than ten percent (10%) of the voting power of all classes of stock of the Company or any Parent or Subsidiary of the Company, the per Share exercise price shall be not less than one hundred ten percent (110%) of the Fair Market Value per Share on
the date of grant; or 
 (B)    granted to any Employee other than an Employee described in the preceding paragraph,
the per Share exercise price shall be not less than one hundred percent (100%) of the Fair Market Value per Share on the date of grant. 

(ii)    In the case of a Non-Qualified Stock Option, the per Share exercise price
shall be not less than one hundred percent (100%) of the Fair Market Value per Share on the date of grant. 

(iii)    In the case of SARs, the base appreciation amount shall not be less than one hundred percent (100%) of the Fair
Market Value per Share on the date of grant. 
 (iv)    In the case of Awards intended to qualify as Performance-Based
Compensation, the exercise or purchase price, if any, shall be not less than one hundred percent (100%) of the Fair Market Value per Share on the date of grant. 

(v)    In the case of the sale of Shares, the per Share purchase price, if any, shall be such price as is determined by
the Administrator. 
 (vi)    In the case of other Awards, such price as is determined by the Administrator. 

(vii)    Notwithstanding the foregoing provisions of this Section 7(a), in the case of an Award issued pursuant to
Section 6(d), above, the exercise or purchase price for the Award shall be determined in accordance with the provisions of the relevant instrument evidencing the agreement to issue such Award. 

(b)    Consideration. Subject to Applicable Laws, the consideration to be paid for the Shares to be issued upon
exercise or purchase of an Award including the method of payment, shall be determined by the Administrator. In addition to any other types of consideration the Administrator may determine, the Administrator is authorized to accept as consideration
for Shares issued under the Plan the following provided that the portion of the 

  
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consideration equal to the par value of the Shares must be paid in cash or other legal consideration permitted by the Delaware General Corporation Law: 

(i)    cash; 

(ii)    check; 

(iii)    delivery of Grantee’s promissory note with such recourse, interest, security, and redemption provisions as
the Administrator determines as appropriate (but only to the extent that the acceptance or terms of the promissory note would not violate an Applicable Law); 

(iv)    surrender of Shares held for the requisite period, if any, necessary to avoid a charge to the Company’s
earnings for financial reporting purposes, or delivery of a properly executed form of attestation of ownership of Shares as the Administrator may require which have a Fair Market Value on the date of surrender or attestation equal to the aggregate
exercise price of the Shares as to which said Award shall be exercised; 
 (v)    with respect to Options, if the
exercise occurs on or after the Registration Date, payment through a broker-dealer sale and remittance procedure pursuant to which the Grantee (A) shall provide written instructions to a Company designated brokerage firm to effect the immediate
sale of some or all of the purchased Shares and remit to the Company sufficient funds to cover the aggregate exercise price payable for the purchased Shares and (B) shall provide written directives to the Company to deliver the certificates for
the purchased Shares directly to such brokerage firm in order to complete the sale transaction; 
 (vi)    with respect
to Options, payment through a “net exercise” such that, without the payment of any funds, the Grantee may exercise the Option and receive the net number of Shares equal to (i) the number of Shares as to which the Option is being
exercised, multiplied by (ii) a fraction, the numerator of which is the Fair Market Value per Share (on such date as is determined by the Administrator) less the exercise price per Share, and the denominator of which is such Fair Market Value
per Share (the number of net Shares to be received shall be rounded down to the nearest whole number of Shares); or 

(vii)    any combination of the foregoing methods of payment. 

The Administrator may at any time or from time to time, by adoption of or by amendment to the standard forms of Award Agreement described in
Section 4(c)(iv), or by other means, grant Awards which do not permit all of the foregoing forms of consideration to be used in payment for the Shares or which otherwise restrict one or more forms of consideration. 

(c)    Taxes. No Shares shall be delivered under the Plan to any Grantee or other person until such Grantee or
other person has made arrangements acceptable to the Administrator for the satisfaction of any non-U.S., federal, state, or local income and employment tax withholding obligations, including, without
limitation, obligations incident to the receipt of Shares. Upon exercise or vesting of an Award the Company shall withhold or collect from the Grantee an amount sufficient to satisfy such tax obligations, including, but not limited to, by surrender
of the whole number of Shares covered by the Award sufficient to satisfy 

  
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the minimum applicable tax withholding obligations incident to the exercise or vesting of an Award (reduced to the lowest whole number of Shares if such number of Shares withheld would result in
withholding a fractional Share with any remaining tax withholding settled in cash). 
 8.    Exercise of Award.

 (a)    Procedure for Exercise; Rights as a Stockholder. 

(i)    Any Award granted hereunder shall be exercisable at such times and under such conditions as determined by the
Administrator under the terms of the Plan and specified in the Award Agreement. 
 (ii)    An Award shall be deemed to
be exercised when written notice of such exercise has been given to the Company in accordance with the terms of the Award by the person entitled to exercise the Award and full payment for the Shares with respect to which the Award is exercised has
been made, including, to the extent selected, use of the broker-dealer sale and remittance procedure to pay the purchase price as provided in Section 7(b)(v). 

(b)    Exercise of Award Following Termination of Continuous Service. In the event of termination of a
Grantee’s Continuous Service for any reason other than Disability or death (but not in the event of a Grantee’s change of status from Employee to Consultant or from Consultant to Employee), such Grantee may, but only during the
Post-Termination Exercise Period (but in no event later than the expiration date of the term of such Award as set forth in the Award Agreement), exercise the portion of the Grantee’s Award that was vested at the date of such termination or such
other portion of the Grantee’s Award as may be determined by the Administrator. The Grantee’s Award Agreement may provide that upon the termination of the Grantee’s Continuous Service for Cause, the Grantee’s right to exercise
the Award shall terminate concurrently with the termination of Grantee’s Continuous Service. In the event of a Grantee’s change of status from Employee to Consultant, an Employee’s Incentive Stock Option shall convert automatically to
a Non-Qualified Stock Option on the day three (3) months and one day following such change of status. To the extent that the Grantee’s Award was unvested at the date of termination, or if the Grantee
does not exercise the vested portion of the Grantee’s Award within the Post-Termination Exercise Period, the Award shall terminate. 

(c)    Disability of Grantee. In the event of termination of a Grantee’s Continuous Service as a result of his
or her Disability, such Grantee may, but only within twelve (12) months from the date of such termination (or such longer period as specified in the Award Agreement but in no event later than the expiration date of the term of such Award as set
forth in the Award Agreement), exercise the portion of the Grantee’s Award that was vested at the date of such termination; provided, however, that if such Disability is not a “disability” as such term is defined in
Section 22(e)(3) of the Code, in the case of an Incentive Stock Option such Incentive Stock Option shall automatically convert to a Non-Qualified Stock Option on the day three (3) months and one day
following such termination. To the extent that the Grantee’s Award was unvested at the date of termination, or if Grantee does not exercise the vested portion of the Grantee’s Award within the time specified herein, the Award shall
terminate. 

  
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 (d)    Death of Grantee. In the event of a termination of the
Grantee’s Continuous Service as a result of his or her death, or in the event of the death of the Grantee during the Post-Termination Exercise Period or during the twelve (12) month period following the Grantee’s termination of
Continuous Service as a result of his or her Disability, the Grantee’s estate or a person who acquired the right to exercise the Award by bequest or inheritance may exercise the portion of the Grantee’s Award that was vested as of the date
of termination, within twelve (12) months from the date of death (or such longer period as specified in the Award Agreement but in no event later than the expiration of the term of such Award as set forth in the Award Agreement). To the extent
that, at the time of death, the Grantee’s Award was unvested, or if the Grantee’s estate or a person who acquired the right to exercise the Award by bequest or inheritance does not exercise the vested portion of the Grantee’s Award
within the time specified herein, the Award shall terminate. 
 (e)    Extension if Exercise Prevented by Law.
Notwithstanding the foregoing, if the exercise of an Award within the applicable time periods set forth in this Section 8 is prevented by the provisions of Section 9 below, the Award shall remain exercisable until one (1) month after
the date the Grantee is notified by the Company that the Award is exercisable, but in any event no later than the expiration of the term of such Award as set forth in the Award Agreement and only in a manner and to the extent permitted under Code
Section 409A. 
 9.    Conditions Upon Issuance of Shares. 

(a)    If at any time the Administrator determines that the delivery of Shares pursuant to the exercise, vesting or any
other provision of an Award is or may be unlawful under Applicable Laws, the vesting or right to exercise an Award or to otherwise receive Shares pursuant to the terms of an Award shall be suspended until the Administrator determines that such
delivery is lawful and shall be further subject to the approval of counsel for the Company with respect to such compliance. The Company shall have no obligation to effect any registration or qualification of the Shares under federal or state laws.

 (b)    As a condition to the exercise of an Award, the Company may require the person exercising such Award to
represent and warrant at the time of any such exercise that the Shares are being purchased only for investment and without any present intention to sell or distribute such Shares if, in the opinion of counsel for the Company, such a representation
is required by any Applicable Laws. 
 10.    Adjustments Upon Changes in Capitalization. Subject to any required
action by the stockholders of the Company and Section 11 below, the number of Shares covered by each outstanding Award, and the number of Shares which have been authorized for issuance under the Plan but as to which no Awards have yet been
granted or which have been returned to the Plan, the exercise or purchase price of each such outstanding Award, the maximum number of Shares with respect to which Awards may be granted to any Grantee in any calendar year, as well as any other terms
that the Administrator determines require adjustment shall be proportionately adjusted for: (i) any increase or decrease in the number of issued Shares resulting from a stock split, reverse stock split, stock dividend, recapitalization,
combination or reclassification of the Shares, or similar transaction affecting the Shares; (ii) any other increase or decrease in the number of issued Shares effected without receipt of consideration by the Company; or (iii) any


  
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other transaction with respect to Common Stock including a corporate merger, consolidation, acquisition of property or stock, separation (including a
spin-off or other distribution of stock or property), reorganization, liquidation (whether partial or complete) or any similar transaction; provided, however that conversion of any convertible securities of
the Company shall not be deemed to have been “effected without receipt of consideration.” In the event of any distribution of cash or other assets to stockholders other than a normal cash dividend, the Administrator shall also make such
adjustments as provided in this Section 10 or substitute, exchange or grant Awards to effect such adjustments (collectively “adjustments”). Any such adjustments to outstanding Awards will be effected in a manner that precludes the
enlargement of rights and benefits under such Awards. In connection with the foregoing adjustments, the Administrator may, in its discretion, prohibit the exercise of Awards or other issuance of Shares, cash or other consideration pursuant to Awards
during certain periods of time. Except as the Administrator determines, no issuance by the Company of shares of any class, or securities convertible into shares of any class, shall affect, and no adjustment by reason hereof shall be made with
respect to, the number or price of Shares subject to an Award. 
 11.    Corporate Transactions. 

(a)    Termination of Award to Extent Not Assumed in Corporate Transaction. Effective upon the consummation of a
Corporate Transaction, all outstanding Awards under the Plan shall terminate. However, all such Awards shall not terminate to the extent they are Assumed in connection with the Corporate Transaction. 

(b)    Acceleration of Award Upon Corporate Transaction. The Administrator shall have the authority, exercisable
either in advance of any actual or anticipated Corporate Transaction or at the time of an actual Corporate Transaction and exercisable at the time of the grant of an Award under the Plan or any time while an Award remains outstanding, to provide for
the full or partial automatic vesting and exercisability of one or more outstanding unvested Awards under the Plan and the release from restrictions on transfer and repurchase or forfeiture rights of such Awards in connection with a Corporate
Transaction, on such terms and conditions as the Administrator may specify. The Administrator also shall have the authority to condition any such Award vesting and exercisability or release from such limitations upon the subsequent termination of
the Continuous Service of the Grantee within a specified period following the effective date of the Corporate Transaction. 

(c)    Effect of Acceleration on Incentive Stock Options. Any Incentive Stock Option accelerated under this
Section 11 in connection with a Corporate Transaction shall remain exercisable as an Incentive Stock Option under the Code only to the extent the $100,000 limitation of Section 422(d) of the Code is not exceeded. 

12.    Effective Date and Term of Plan. The Plan shall become effective upon the earlier to occur of its adoption
by the Board or its approval by the stockholders of the Company. It shall continue in effect for a term of ten (10) years unless sooner terminated. Subject to Section 17 below, and Applicable Laws, Awards may be granted under the Plan upon
its becoming effective. 

  
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 13.    Amendment, Suspension or Termination of the Plan. 

(a)    The Board may at any time amend, suspend or terminate the Plan. To the extent necessary to comply with Applicable
Laws, the Company shall obtain stockholder approval of any Plan amendment in such a manner and to such a degree as required. 

(b)    No Award may be granted during any suspension of the Plan or after termination of the Plan. 

(c)    No suspension or termination of the Plan (including termination of the Plan under Section 12, above) shall
adversely affect any rights under Awards already granted to a Grantee. 
 14.    Reservation of Shares. 

(a)    The Company, during the term of the Plan, will at all times reserve and keep available such number of Shares as
shall be sufficient to satisfy the requirements of the Plan. 
 (b)    The inability of the Company to obtain authority
from any regulatory body having jurisdiction, which authority is deemed by the Company’s counsel to be necessary to the lawful issuance and sale of any Shares hereunder, shall relieve the Company of any liability in respect of the failure to
issue or sell such Shares as to which such requisite authority shall not have been obtained. 
 15.    No Effect on
Terms of Employment/Consulting Relationship. The Plan shall not confer upon any Grantee any right with respect to the Grantee’s Continuous Service, nor shall it interfere in any way with his or her right or the right of the Company or any
Related Entity to terminate the Grantee’s Continuous Service at any time, including, but not limited to, for Cause or without Cause, and with or without notice. The ability of the Company or any Related Entity to terminate the employment of a
Grantee who is employed at will is in no way affected by its determination that the Grantee’s Continuous Service has been terminated for Cause for the purposes of this Plan. 

16.    No Effect on Retirement and Other Benefit Plans. Except as specifically provided in a retirement or other
benefit plan of the Company or a Related Entity, Awards shall not be deemed compensation for purposes of computing benefits or contributions under any retirement plan of the Company or a Related Entity, and shall not affect any benefits under any
other benefit plan of any kind or any benefit plan subsequently instituted under which the availability or amount of benefits is related to level of compensation. The Plan is not a “Pension Plan” or “Welfare Plan” under the
Employee Retirement Income Security Act of 1974, as amended. 
 17.    Stockholder Approval. Continuance of the
Plan shall be subject to approval by the stockholders of the Company within twelve (12) months before or after the date the Plan is adopted. Such stockholder approval shall be obtained in the degree and manner required under Applicable Laws.
Any Award exercised before stockholder approval is obtained shall be rescinded if stockholder approval is not obtained within the time prescribed, and Shares issued on the exercise of any such Award shall not be counted in determining whether
stockholder approval is obtained. 

  
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 18.    Information to Grantees. To the extent required by
Applicable Laws, the Company shall provide to each Grantee, during the period for which such Grantee has one or more Awards outstanding, copies of financial statements at least annually. The Company shall not be required to provide such information
to persons whose duties in connection with the Company assure them access to equivalent information. 
 19.    Effect
of Section 162(m) of the Code. Section 162(m) of the Code does not apply to the Plan prior to the Registration Date or such earlier time that the Company first becomes subject to the reporting obligations of
Section 12 of the Exchange Act. Following the Registration Date or such earlier time that the Company first becomes subject to the reporting obligations of Section 12 of the Exchange Act, the Plan, and all Awards (except Awards of
Restricted Stock that vest over time) issued thereunder, are intended to be exempt from the application of Section 162(m) of the Code, which restricts under certain circumstances the Federal income tax deduction for compensation paid by a
public company to named executives in excess of $1 million per year. The exemption is based on Treasury Regulation Section 1.162-27(f), in the form existing on the effective date of the Plan, with
the understanding that such regulation generally exempts from the application of Section 162(m) of the Code compensation paid pursuant to a plan that existed before a company becomes publicly held. Under such Treasury Regulation, this exemption
is available to the Plan for the duration of the period that lasts until the earliest of (i) the expiration of the Plan, (ii) the material modification of the Plan, (iii) the exhaustion of the maximum number of shares of Common Stock
available for Awards under the Plan, as set forth in Section 3(a), (iv) the first meeting of stockholders at which directors are to be elected that occurs after the close of the third calendar year following the calendar year in which the
Company first becomes subject to the reporting obligations of Section 12 of the Exchange Act, or (v) such other date required by Section 162(m) of the Code and the rules and regulations promulgated thereunder. To the extent that the
Administrator determines as of the date of grant of an Award that (i) the Award is intended to qualify as Performance-Based Compensation and (ii) the exemption described above is no longer available with respect to such Award, such Award
shall not be effective until any stockholder approval required under Section 162(m) of the Code has been obtained. 

20.    Unfunded Obligation. Grantees shall have the status of general unsecured creditors of the Company. Any
amounts payable to Grantees pursuant to the Plan shall be unfunded and unsecured obligations for all purposes, including, without limitation, Title I of the Employee Retirement Income Security Act of 1974, as amended. Neither the Company nor
any Related Entity shall be required to segregate any monies from its general funds, or to create any trusts, or establish any special accounts with respect to such obligations. The Company shall retain at all times beneficial ownership of any
investments, including trust investments, which the Company may make to fulfill its payment obligations hereunder. Any investments or the creation or maintenance of any trust or any Grantee account shall not create or constitute a trust or fiduciary
relationship between the Administrator, the Company or any Related Entity and a Grantee, or otherwise create any vested or beneficial interest in any Grantee or the Grantee’s creditors in any assets of the Company or a Related Entity. The
Grantees shall have no claim against the Company or any Related Entity for any changes in the value of any assets that may be invested or reinvested by the Company with respect to the Plan. 

  
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 21.    Construction. Captions and titles contained herein are for
convenience only and shall not affect the meaning or interpretation of any provision of the Plan. Except when otherwise indicated by the context, the singular shall include the plural and the plural shall include the singular. Use of the term
“or” is not intended to be exclusive, unless the context clearly requires otherwise. 

22.    Nonexclusivity of the Plan. Neither the adoption of the Plan by the Board, the submission of the Plan to the
stockholders of the Company for approval, nor any provision of the Plan will be construed as creating any limitations on the power of the Board to adopt such additional compensation arrangements as it may deem desirable, including, without
limitation, the granting of Awards otherwise than under the Plan, and such arrangements may be either generally applicable or applicable only in specific cases. 

  
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