EX-10.3





 Exhibit 10.3 
  

 
 AVIDITY BIOSCIENCES, INC. 

2020 EMPLOYEE STOCK PURCHASE PLAN 
  

 
 ARTICLE I. 

PURPOSE 

The purposes of this Avidity Biosciences, Inc. 2020 Employee Stock Purchase Plan (as it may be amended or restated from time
to time, the “Plan”) are to assist Eligible Employees of Avidity Biosciences, Inc., a Delaware corporation (the “Company”), and its Designated Subsidiaries in acquiring a stock ownership interest in
the Company pursuant to a plan which is intended to qualify as an “employee stock purchase plan” within the meaning of Section 423(b) of the Code, and to help Eligible Employees provide for their future security and to encourage them
to remain in the employment of the Company and its Designated Subsidiaries. 
 ARTICLE II. 

DEFINITIONS AND CONSTRUCTION 

Wherever the following terms are used in the Plan they shall have the meanings specified below, unless the context clearly
indicates otherwise. The singular pronoun shall include the plural where the context so indicates. Masculine, feminine and neuter pronouns are used interchangeably and each comprehends the others. 

2.1    “Administrator” means the entity that conducts the general administration
of the Plan as provided in Article XI. The term “Administrator” shall refer to the Committee unless the Board has assumed the authority for administration of the Plan as provided in Article XI. 

2.2    “Applicable Law” means the requirements relating to the administration of
equity incentive plans under U.S. federal and state securities, tax and other applicable laws, rules and regulations, the applicable rules of any stock exchange or quotation system on which the Common Stock is listed or quoted and the applicable
laws and rules of any foreign country or other jurisdiction where rights under this Plan are granted. 

2.3    “Board” means the Board of Directors of the Company. 

2.4    “Change of Control” means and includes each of the following: 

(a)      A transaction or series of transactions (other than an offering of Common Stock to the
general public through a registration statement filed with the Securities and Exchange Commission or a transaction or series of transactions that meets the requirements of clauses (i) and (ii) of subsection (c) below) whereby any
“person” or related “group” of “persons” (as such terms are used in Sections 13(d) and 14(d)(2) of the Exchange Act) (other than the Company, any of its Subsidiaries, an employee benefit plan maintained by the
Company or any of its Subsidiaries or a “person” that, prior to such transaction, directly or indirectly controls, is controlled by, or is under common control with, the Company) directly or indirectly acquires beneficial ownership (within
the meaning of Rule 13d-3 under the Exchange Act) of securities of the Company possessing more than 50% of the total combined voting power of the Company’s securities outstanding immediately after
such acquisition; or 
 (b)      During any period of two consecutive years, individuals who,
at the beginning of such period, constitute the Board together with any new Director(s) (other than a Director designated by a person who shall have entered into an agreement with the Company to effect a transaction described in













 
subsections (a) or (c)) whose election by the Board or nomination for election by the Company’s stockholders was approved by a vote of at least
two-thirds of the Directors then still in office who either were Directors at the beginning of the two-year period or whose election or nomination for election was
previously so approved, cease for any reason to constitute a majority thereof; or 

(c)      The consummation by the Company (whether directly involving the Company or indirectly
involving the Company through one or more intermediaries) of (x) a merger, consolidation, reorganization, or business combination or (y) a sale or other disposition of all or substantially all of the Company’s assets in any single
transaction or series of related transactions or (z) the acquisition of assets or stock of another entity, in each case other than a transaction: 

  (i)    which results in the Company’s voting securities outstanding immediately before
the transaction continuing to represent (either by remaining outstanding or by being converted into voting securities of the Company or the person that, as a result of the transaction, controls, directly or indirectly, the Company or owns, directly
or indirectly, all or substantially all of the Company’s assets or otherwise succeeds to the business of the Company (the Company or such person, the “Successor Entity”)) directly or indirectly, at least a majority of
the combined voting power of the Successor Entity’s outstanding voting securities immediately after the transaction, and 

  (ii)    after which no person or group beneficially owns voting securities representing 50%
or more of the combined voting power of the Successor Entity; provided, however, that no person or group shall be treated for purposes of this clause (ii) as beneficially owning 50% or more of the combined voting power of the
Successor Entity solely as a result of the voting power held in the Company prior to the consummation of the transaction. 

The Administrator shall have full and final authority, which shall be exercised in its sole discretion, to determine
conclusively whether a Change of Control has occurred pursuant to the above definition, the date of such Change of Control and any incidental matters relating thereto. 

2.5     “Code” means the Internal Revenue Code of 1986, as amended and the
regulations issued thereunder. 
 2.6    “Common Stock” means the common stock
of the Company and such other securities of the Company that may be substituted therefor pursuant to Article VIII. 

2.7    “Company” means Avidity Biosciences, Inc., a Delaware corporation. 

2.8    “Compensation” of an Eligible Employee means the gross base compensation
received by such Eligible Employee as compensation for services to the Company or any Designated Subsidiary, including prior week adjustment and overtime payments but excluding vacation pay, holiday pay, jury duty pay, funeral leave pay, military
leave pay, commissions, incentive compensation, one-time bonuses (e.g., retention or sign on bonuses), education or tuition reimbursements, travel expenses, business and moving reimbursements, income received
in connection with any stock options, stock appreciation rights, restricted stock, restricted stock units or other compensatory equity awards, fringe benefits, other special payments and all contributions made by the Company or any Designated
Subsidiary for the Employee’s benefit under any employee benefit plan now or hereafter established. 

2.9    “Designated Subsidiary” means any Subsidiary designated by the
Administrator in accordance with Section 11.3(b). 
 2.10    “Director”
means a Board member. 

  
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 2.11    “Effective
Date” means the day prior to the Public Trading Date, provided that the Board has adopted the Plan prior to or on such date. 

2.12    “Eligible Employee” means an Employee who does not, immediately after any
rights under this Plan are granted, own (directly or through attribution) stock possessing 5% or more of the total combined voting power or value of all classes of Common Stock and other stock of the Company, a Parent or a Subsidiary (as determined
under Section 423(b)(3) of the Code). For purposes of the foregoing sentence, the rules of Section 424(d) of the Code with regard to the attribution of stock ownership shall apply in determining the stock ownership of an individual, and
stock that an Employee may purchase under outstanding options shall be treated as stock owned by the Employee; provided, however, that the Administrator may provide in an Offering Document that an Employee shall not be eligible to
participate in an Offering Period if: (a) such Employee is a highly compensated employee within the meaning of Section 423(b)(4)(D) of the Code, (b) such Employee has not met a service requirement designated by the Administrator
pursuant to Section 423(b)(4)(A) of the Code (which service requirement may not exceed two years), (c) such Employee’s customary employment is for twenty hours or less per week, (d) such Employee’s customary employment is for
less than five months in any calendar year and/or (e) such Employee is a citizen or resident of a foreign jurisdiction and the grant of a right to purchase Common Stock under the Plan to such Employee would be prohibited under the laws of such
foreign jurisdiction or the grant of a right to purchase Common Stock under the Plan to such Employee in compliance with the laws of such foreign jurisdiction would cause the Plan to violate the requirements of Section 423 of the Code, as
determined by the Administrator in its sole discretion; provided, further, that any exclusion in clauses (a), (b), (c), (d) or (e) shall be applied in an identical manner under each Offering Period to all Employees, in accordance
with Treasury Regulation Section 1.423-2(e). 

2.13    “Employee” means any officer or other employee (as defined in accordance
with Section 3401(c) of the Code) of the Company or any Designated Subsidiary. “Employee” shall not include any director of the Company or a Designated Subsidiary who does not render services to the Company or a Designated Subsidiary
as an employee within the meaning of Section 3401(c) of the Code. For purposes of the Plan, the employment relationship shall be treated as continuing intact while the individual is on sick leave or other leave of absence approved by the
Company or Designated Subsidiary and meeting the requirements of Treasury Regulation Section 1.421-1(h)(2). Where the period of leave exceeds three months and the individual’s right to reemployment
is not guaranteed either by statute or by contract, the employment relationship shall be deemed to have terminated on the first day immediately following such three-month period. 

2.14    “Enrollment Date” means the first day of each Offering Period (or, with
respect to the Initial Offering Period, such date set forth in the Offering Document approved by the Administrator with respect to the Initial Offering Period). 

2.15    “Exchange Act” means the Securities Exchange Act of 1934, as amended from
time to time. 
 2.16    “Fair Market Value” means, as of any date, the value of
a share of Common Stock determined as follows: (a) if the Common Stock is listed on any established stock exchange, its Fair Market Value will be the closing sales price for such Common Stock as quoted on such exchange for such date, or if no
sale occurred on such date, the last day preceding such date during which a sale occurred, as reported in The Wall Street Journal or another source the Administrator deems reliable; (b) if the Common Stock is not traded on a stock
exchange but is quoted on a national market or other quotation system, the closing sales price on such date, or if no sales occurred on such date, then on the last date preceding such date during which a sale occurred, as reported in The Wall
Street Journal or another source the Administrator deems reliable; (c) without an established market for the Common Stock, the Administrator will determine the Fair Market Value in its discretion; or (d) with respect to the Grant Date
for the Initial Offering Period, 

  
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the Fair Market Value as specified in the Offering Document approved by the Administrator with respect to the Initial Offering Period. 

2.17    “Grant Date” means the first Trading Day of an Offering Period (or, with
respect to the Initial Offering Period, such date set forth in the Offering Document approved by the Administrator with respect to the Initial Offering Period). 

2.18    “Initial Offering Period” shall mean the period commencing on the initial
Enrollment Date set forth in the Offering Document approved by the Administrator with respect to the Initial Offering Period and ending the date set forth in the Offering Document approved by the Administrator with respect to the Initial Offering
Period. 
 2.19    “Offering Document” shall have the meaning given to such term
in Section 4.1. 
 2.20    “Offering Period” shall have the meaning given
to such term in Section 4.1. 
 2.21    “Parent” means any corporation,
other than the Company, in an unbroken chain of corporations ending with the Company if, at the time of the determination, each of the corporations other than the Company owns stock possessing 50% or more of the total combined voting power of all
classes of stock in one of the other corporations in such chain. 

2.22    “Participant” means any Eligible Employee who has executed a subscription
agreement and been granted rights to purchase Common Stock pursuant to the Plan. 

2.23    “Plan” means this Avidity Biosciences, Inc. 2020 Employee Stock Purchase
Plan, as it may be amended from time to time. 
 2.24    “Public Trading
Date” means the first date upon which the Common Stock is listed (or approved for listing) upon notice of issuance on any securities exchange or designated (or approved for designation) upon notice of issuance as a national
market security on an interdealer quotation system, or, if earlier, the date on which the Company becomes a “publicly held corporation” for purposes of Treasury Regulation
Section 1.162-27(c)(1). 
 2.25    “Purchase
Date” means the last Trading Day of each Purchase Period. 
 2.26    “Purchase
Period” shall refer to one or more periods within an Offering Period, as designated in the applicable Offering Document; provided, however, that, in the event no Purchase Period is designated by the Administrator in the
applicable Offering Document, the Purchase Period for each Offering Period covered by such Offering Document shall be the same as the applicable Offering Period. 

2.27    “Purchase Price” means the purchase price designated by the Administrator
in the applicable Offering Document (which purchase price shall not be less than 85% of the Fair Market Value of a Share on the Grant Date or on the Purchase Date, whichever is lower); provided, however, that, in the event no purchase
price is designated by the Administrator in the applicable Offering Document, the purchase price for the Offering Periods covered by such Offering Document shall be 85% of the Fair Market Value of a Share on the Grant Date or on the Purchase Date,
whichever is lower; provided, further, that the Purchase Price may be adjusted by the Administrator pursuant to Article VIII and shall not be less than the par value of a Share. 

2.28    “Securities Act” means the Securities Act of 1933, as
amended. 
 2.29    “Share” means a share of Common Stock. 

  
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 2.30    “Subsidiary” means any
corporation, other than the Company, in an unbroken chain of corporations beginning with the Company if, at the time of the determination, each of the corporations other than the last corporation in an unbroken chain owns stock possessing 50% or
more of the total combined voting power of all classes of stock in one of the other corporations in such chain; provided, however, that a limited liability company or partnership may be treated as a Subsidiary to the extent either
(a) such entity is treated as a disregarded entity under Treasury Regulation Section 301.7701-3(a) by reason of the Company or any other Subsidiary that is a corporation being the sole owner of such
entity, or (b) such entity elects to be classified as a corporation under Treasury Regulation Section 301.7701-3(a) and such entity would otherwise qualify as a Subsidiary. 

2.31     “Trading Day” means a day on which national stock exchanges
in the United States are open for trading. 
 ARTICLE III. 

SHARES SUBJECT TO THE PLAN 

3.1    Number of Shares. Subject to Article VIII, the aggregate number of Shares that may be
issued pursuant to rights granted under the Plan shall be 325,000 Shares. In addition to the foregoing, subject to Article VIII, on the first day of each calendar year beginning on January 1, 2021 and ending on and including
January 1, 2030, the number of Shares available for issuance under the Plan shall be increased by that number of Shares equal to the lesser of (a) 1% of the Shares outstanding on the final day of the immediately preceding calendar year, and
(b) such smaller number of Shares as determined by the Board. If any right granted under the Plan shall for any reason terminate without having been exercised, the Common Stock not purchased under such right shall again become available for
issuance under the Plan. Notwithstanding anything in this Section 3.1 to the contrary, the number of Shares that may be issued or transferred pursuant to the rights granted under the Plan shall not exceed an aggregate of 5,000,000 Shares,
subject to Article 8. 
 3.2    Stock Distributed. Any Common Stock distributed pursuant to the
Plan may consist, in whole or in part, of authorized and unissued Common Stock, treasury stock or Common Stock purchased on the open market. 

ARTICLE IV. 
 OFFERING
PERIODS; OFFERING DOCUMENTS; PURCHASE DATES 
 4.1    Offering Periods. The Administrator may
from time to time grant or provide for the grant of rights to purchase Common Stock under the Plan to Eligible Employees during one or more periods (each, an “Offering Period”) selected by the Administrator. The terms and
conditions applicable to each Offering Period shall be set forth in an “Offering Document” adopted by the Administrator, which Offering Document shall be in such form and shall contain such terms and conditions as the
Administrator shall deem appropriate and shall be incorporated by reference into and made part of the Plan and shall be attached hereto as part of the Plan. The Administrator shall establish in each Offering Document one or more Purchase Periods
during such Offering Period during which rights granted under the Plan shall be exercised and purchases of Shares carried out during such Offering Period in accordance with such Offering Document and the Plan. The provisions of separate Offering
Periods under the Plan need not be identical. 
 4.2    Offering Documents. Each Offering
Document with respect to an Offering Period shall specify (through incorporation of the provisions of this Plan by reference or otherwise): 

(a)    the length of the Offering Period, which period shall not exceed twenty-seven months; 

(b)    the length of the Purchase Period(s) within the Offering Period; 

  
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 (c)      the maximum number of Shares that may
be purchased by any Eligible Employee during such Offering Period, which, in the absence of a contrary designation by the Administrator, shall be 50,000 Shares; 

(d)      in connection with each Offering Period that contains more than one Purchase Period,
the maximum aggregate number of shares which may be purchased by any Eligible Employee during each Purchaser Period, which, in the absence of a contrary designation by the Administrator, shall be 50,000 Shares; and 

(e)      such other provisions as the Administrator determines are appropriate, subject to the
Plan. 
 ARTICLE V. 

ELIGIBILITY AND PARTICIPATION 

5.1    Eligibility. Any Eligible Employee who shall be employed by the Company or a Designated
Subsidiary on a given Enrollment Date for an Offering Period shall be eligible to participate in the Plan during such Offering Period, subject to the requirements of this Article V and the limitations imposed by Section 423(b) of the Code.

 5.2    Enrollment in Plan. 

(a)      Except as otherwise set forth in an Offering Document or determined by the
Administrator, an Eligible Employee may become a Participant in the Plan for an Offering Period by delivering a subscription agreement to the Company by such time prior to the Enrollment Date for such Offering Period (or such other date specified in
the Offering Document) designated by the Administrator and in such form as the Company provides. 

(b)      Each subscription agreement shall designate a whole percentage of such Eligible
Employee’s Compensation to be withheld by the Company or the Designated Subsidiary employing such Eligible Employee on each payday during the Offering Period as payroll deductions under the Plan or, if permitted by the Administrator,
contributions to be made by such Eligible Employee. The designated percentage may not be less than 1% and may not be more than the maximum percentage specified by the Administrator in the applicable Offering Document (which percentage shall be 15%
in the absence of any such designation). The payroll deductions or, if permitted by the Administrator, contributions made for each Participant shall be credited to an account for such Participant under the Plan and shall be deposited with the
general funds of the Company. 
 (c)      A Participant may increase or decrease the
percentage of Compensation designated in his or her subscription agreement, subject to the limits of this Section 5.2, or may suspend his or her payroll deductions, or, if permitted by the Administrator, contributions, at any time during an
Offering Period; provided, however, that the Administrator may limit the number of changes a Participant may make to his or her payroll deduction elections or, if permitted by the Administrator, contributions, during each Offering
Period in the applicable Offering Document (and in the absence of any specific designation by the Administrator, a Participant shall be allowed one change to his or her payroll deduction elections or, if permitted by the Administrator,
contributions, during each Offering Period). Any such change or suspension of payroll deductions, or, if permitted by the Administrator, contributions, shall be effective with the first full payroll period that is at least five business days after
the Company’s receipt of the new subscription agreement (or such shorter or longer period as may be specified by the Administrator in the applicable Offering Document). In the event a Participant suspends his or her payroll deductions or
contributions, such Participant’s cumulative payroll deductions or contributions prior to the suspension shall remain in his or her account and shall be applied to the purchase of Shares on the next occurring Purchase Date and shall not be paid
to such Participant unless he or she withdraws from participation in the Plan pursuant to Article VII. 

  
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 (d)      Except as set forth in
Section 5.8, as otherwise set forth in an Offering Document or determined by the Administrator, a Participant may participate in the Plan only by means of payroll deduction and may not make contributions by lump sum payment for any Offering
Period. 
 5.3    Payroll Deductions. Except as otherwise provided in the applicable Offering
Document or Section 5.8, payroll deductions for a Participant shall commence on the first payroll following the Enrollment Date and shall end on the last payroll in the Offering Period to which the Participant’s authorization is
applicable, unless sooner terminated by the Participant as provided in Article VII or suspended by the Participant or the Administrator as provided in Section 5.2 and Section 5.6, respectively. 

5.4    Effect of Enrollment. A Participant’s completion of a subscription agreement will
enroll such Participant in the Plan for each subsequent Offering Period on the terms contained therein until the Participant either submits a new subscription agreement, withdraws from participation under the Plan as provided in Article VII or
otherwise becomes ineligible to participate in the Plan. 
 5.5    Limitation on Purchase of Common
Stock. An Eligible Employee may be granted rights under the Plan only if such rights, together with any other rights granted to such Eligible Employee under “employee stock purchase plans” of the Company, any Parent or any Subsidiary,
as specified by Section 423(b)(8) of the Code, do not permit such employee’s rights to purchase stock of the Company or any Parent or Subsidiary to accrue at a rate that exceeds $25,000 of the fair market value of such stock (determined as
of the time which such rights are granted) for each calendar year in which such rights are outstanding at any time. This limitation shall be applied in accordance with Section 423(b)(8) of the Code. 

5.6    Decrease or Suspension of Payroll Deductions or Contributions. Notwithstanding the
foregoing, to the extent necessary to comply with Section 423(b)(8) of the Code and Section 5.5 or the other limitations set forth in this Plan, a Participant’s payroll deductions or contributions may be suspended or discontinued by
the Administrator at any time during an Offering Period. The balance of the amount credited to the account of each Participant that has not been applied to the purchase of Shares by reason of Section 423(b)(8) of the Code, Section 5.5 or
the other limitations set forth in this Plan shall be paid to such Participant in one lump sum in cash as soon as reasonably practicable after the Purchase Date. 

5.7    Foreign Employees. In order to facilitate participation in the Plan, the Administrator may
provide for such special terms applicable to Participants who are citizens or residents of a foreign jurisdiction, or who are employed by a Designated Subsidiary outside of the United States, as the Administrator may consider necessary or
appropriate to accommodate differences in local law, tax policy or custom. Such special terms may not be more favorable than the terms of rights granted under the Plan to Eligible Employees who are residents of the United States. Moreover, the
Administrator may approve such supplements to, or amendments, restatements or alternative versions of, this Plan as it may consider necessary or appropriate for such purposes without thereby affecting the terms of this Plan as in effect for any
other purpose. No such special terms, supplements, amendments or restatements shall include any provisions that are inconsistent with the terms of this Plan as then in effect unless this Plan could have been amended to eliminate such inconsistency
without further approval by the stockholders of the Company. 
 5.8    Leave of Absence. During
leaves of absence approved by the Company meeting the requirements of Treasury Regulation Section 1.421-1(h)(2) under the Code, a Participant may continue participation in the Plan by making cash payments
to the Company on his or her normal payday equal to his or her authorized payroll deduction. 
 ARTICLE VI. 

GRANT AND EXERCISE OF RIGHTS 

6.1    Grant of Rights. On the Grant Date of each Offering Period, each Eligible Employee
participating in such Offering Period shall be granted a right to purchase the maximum number of Shares 

  
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specified under Section 4.2, subject to the limits in Section 5.5, and shall have the right to buy, on each Purchase Date during such Offering Period (at the applicable Purchase Price),
such number of whole Shares as is determined by dividing (a) such Participant’s payroll deductions or permitted contributions accumulated prior to such Purchase Date and retained in the Participant’s account as of the Purchase Date,
by (b) the applicable Purchase Price (rounded down to the nearest Share). The right shall expire on the earlier of: (x) the last Purchase Date of the Offering Period, (y) last day of the Offering Period and (z) the date on which
the Participant withdraws in accordance with Section 7.1 or Section 7.3. 
 6.2    Exercise
of Rights. On each Purchase Date, each Participant’s accumulated payroll deductions or permitted contributions and any other additional payments specifically provided for in the applicable Offering Document will be applied to the purchase
of whole Shares, up to the maximum number of Shares permitted pursuant to the terms of the Plan and the applicable Offering Document, at the Purchase Price. No fractional Shares shall be issued upon the exercise of rights granted under the Plan,
unless the Offering Document specifically provides otherwise. Any cash in lieu of fractional Shares remaining after the purchase of whole Shares upon exercise of a purchase right will be credited to a Participant’s account and returned to the
Participant in one lump sum payment in a subsequent payroll check as soon as practicable after the Exercise Date, unless the Administrator provides that such amounts should be rolled over to the next occurring Offering Period in the applicable
Offering Document. Shares issued pursuant to the Plan may be evidenced in such manner as the Administrator may determine and may be issued in certificated form or issued pursuant to book-entry procedures. 

6.3    Pro Rata Allocation of Shares. If the Administrator determines that, on a given Purchase
Date, the number of Shares with respect to which rights are to be exercised may exceed (a) the number of Shares that were available for issuance under the Plan on the Enrollment Date of the applicable Offering Period, or (b) the number of
Shares available for issuance under the Plan on such Purchase Date, the Administrator may in its sole discretion provide that the Company shall make a pro rata allocation of the Shares available for purchase on such Enrollment Date or Purchase Date,
as applicable, in as uniform a manner as shall be practicable and as it shall determine in its sole discretion to be equitable among all Participants for whom rights to purchase Common Stock are to be exercised pursuant to this Article VI on
such Purchase Date, and shall either (i) continue all Offering Periods then in effect, or (ii) terminate any or all Offering Periods then in effect pursuant to Article IX. The Company may make pro rata allocation of the Shares
available on the Enrollment Date of any applicable Offering Period pursuant to the preceding sentence, notwithstanding any authorization of additional Shares for issuance under the Plan by the Company’s stockholders subsequent to such
Enrollment Date. The balance of the amount credited to the account of each Participant that has not been applied to the purchase of Shares shall be paid to such Participant in one lump sum in cash as soon as reasonably practicable after the Purchase
Date. 
 6.4    Withholding. At the time a Participant’s rights under the Plan are
exercised, in whole or in part, or at the time some or all of the Common Stock issued under the Plan is disposed of, the Participant must make adequate provision for the Company’s federal, state, or other tax withholding obligations, if any,
that arise upon the exercise of the right or the disposition of the Common Stock. At any time, the Company may, but shall not be obligated to, withhold from the Participant’s compensation the amount necessary for the Company to meet applicable
withholding obligations, including any withholding required to make available to the Company any tax deductions or benefits attributable to sale or early disposition of Common Stock by the Participant. 

6.5    Conditions to Issuance of Common Stock. The Company shall not be required to issue or
deliver any certificate or certificates for, or make any book entries evidencing, Shares purchased upon the exercise of rights under the Plan prior to fulfillment of all of the following conditions: 

(a)      The admission of such Shares to listing on all stock exchanges, if any, on which the
Common Stock is then listed; 

  
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 (b)      The completion of any registration or
other qualification of such Shares under any state or federal law or under the rulings or regulations of the Securities and Exchange Commission or any other governmental regulatory body, that the Administrator shall, in its absolute discretion, deem
necessary or advisable; 
 (c)      The obtaining of any approval or other clearance from any
state or federal governmental agency that the Administrator shall, in its absolute discretion, determine to be necessary or advisable; 

(d)      The payment to the Company of all amounts that it is required to withhold under
federal, state or local law upon exercise of the rights, if any; and 
 (e)      The lapse of
such reasonable period of time following the exercise of the rights as the Administrator may from time to time establish for reasons of administrative convenience. 

ARTICLE VII. 

WITHDRAWAL; CESSATION OF ELIGIBILITY 

7.1    Withdrawal. A Participant may withdraw all but not less than all of the payroll deductions
or contributions credited to his or her account and not yet used to exercise his or her rights under the Plan at any time by giving written notice to the Company in a form acceptable to the Company no later than one week prior to the end of the
Offering Period (or such shorter or longer period specified by the Administrator in the Offering Document). All of the Participant’s payroll deductions credited to his or her account or contributions made by the Participant during an Offering
Period shall be paid to such Participant as soon as reasonably practicable after receipt of notice of withdrawal and such Participant’s rights for the Offering Period shall be automatically terminated, and no further payroll deductions for the
purchase of Shares shall be made or contributions accepted for such Offering Period. If a Participant withdraws from an Offering Period, payroll deductions shall not resume at the beginning of the next Offering Period unless the Participant timely
delivers to the Company a new subscription agreement. 
 7.2    Future Participation. A
Participant’s withdrawal from an Offering Period shall not have any effect upon his or her eligibility to participate in any similar plan that may hereafter be adopted by the Company or a Designated Subsidiary or in subsequent Offering Periods
that commence after the termination of the Offering Period from which the Participant withdraws. 

7.3    Cessation of Eligibility. Upon a Participant’s ceasing to be an Eligible Employee for
any reason, he or she shall be deemed to have elected to withdraw from the Plan pursuant to this Article VII and the payroll deductions credited to such Participant’s account or contributions made by such Participant during the Offering
Period shall be paid to such Participant or, in the case of his or her death, to the person or persons entitled thereto under Section 12.4, as soon as reasonably practicable, and such Participant’s rights for the Offering Period shall be
automatically terminated. 
 ARTICLE VIII. 

ADJUSTMENTS UPON CHANGES IN STOCK 

8.1    Changes in Capitalization. Subject to Section 8.3, in the event that the Administrator
determines that any dividend or other distribution (whether in the form of cash, Common Stock, other securities, or other property), Change of Control, reorganization, merger, amalgamation, consolidation, combination, repurchase, recapitalization,
liquidation, dissolution, or sale, transfer, exchange or other disposition of all or substantially all of the assets of the Company, or sale or exchange of Common Stock or other securities of the Company, issuance of warrants or other rights to
purchase Common Stock or other securities of the Company, or other similar corporate transaction or event, as determined by the Administrator, affects the Common Stock such that an adjustment is determined by the Administrator to be appropriate in
order to prevent dilution or enlargement of the benefits or potential benefits intended by the 

  
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Company to be made available under the Plan or with respect to any outstanding purchase rights under the Plan, the Administrator shall make equitable adjustments, if any, to reflect such change
with respect to (a) the aggregate number and type of Shares (or other securities or property) that may be issued under the Plan (including, but not limited to, adjustments of the limitations in Section 3.1 and the limitations established
in each Offering Document pursuant to Section 4.2 on the maximum number of Shares that may be purchased); (b) the class(es) and number of Shares and price per Share subject to outstanding rights; and (c) the Purchase Price with respect to
any outstanding rights. 
 8.2    Other Adjustments. Subject to Section 8.3, in the event of
any transaction or event described in Section 8.1 or any unusual or nonrecurring transactions or events affecting the Company, any affiliate of the Company, or the financial statements of the Company or any affiliate (including without
limitation any Change of Control), or of changes in Applicable Law or accounting principles, the Administrator, in its discretion, and on such terms and conditions as it deems appropriate, is hereby authorized to take any one or more of the
following actions whenever the Administrator determines that such action is appropriate in order to prevent the dilution or enlargement of the benefits or potential benefits intended to be made available under the Plan or with respect to any right
under the Plan, to facilitate such transactions or events or to give effect to such changes in laws, regulations or principles: 

(a)      To provide for either (i) termination of any outstanding right in exchange for an
amount of cash, if any, equal to the amount that would have been obtained upon the exercise of such right had such right been currently exercisable or (ii) the replacement of such outstanding right with other rights or property selected by the
Administrator in its sole discretion; 
 (b)      To provide that the outstanding rights under
the Plan shall be assumed by the successor or survivor corporation, or a parent or subsidiary thereof, or shall be substituted for by similar rights covering the stock of the successor or survivor corporation, or a parent or subsidiary thereof, with
appropriate adjustments as to the number and kind of shares and prices; 
 (c)      To make
adjustments in the number and type of Shares (or other securities or property) subject to outstanding rights under the Plan and/or in the terms and conditions of outstanding rights and rights that may be granted in the future; 

(d)      To provide that Participants’ accumulated payroll deductions or contributions may
be used to purchase Common Stock prior to the next occurring Purchase Date on such date as the Administrator determines in its sole discretion and the Participants’ rights under the ongoing Offering Period(s) shall be terminated; and 

(e)      To provide that all outstanding rights shall terminate without being exercised. 

8.3    No Adjustment Under Certain Circumstances. No adjustment or action described in this
Article VIII or in any other provision of the Plan shall be authorized to the extent that such adjustment or action would cause the Plan to fail to satisfy the requirements of Section 423 of the Code. 

8.4    No Other Rights. Except as expressly provided in the Plan, no Participant shall have any
rights by reason of any subdivision or consolidation of shares of stock of any class, the payment of any dividend, any increase or decrease in the number of shares of stock of any class or any dissolution, liquidation, merger, or consolidation of
the Company or any other corporation. Except as expressly provided in the Plan or pursuant to action of the Administrator under the Plan, no issuance by the Company of shares of stock of any class, or securities convertible into shares of stock of
any class, shall affect, and no adjustment by reason thereof shall be made with respect to, the number of Shares subject to outstanding rights under the Plan or the Purchase Price with respect to any outstanding rights. 

  
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 ARTICLE IX. 

AMENDMENT, MODIFICATION AND TERMINATION 

9.1    Amendment, Modification and Termination. The Administrator may amend, suspend or terminate
the Plan at any time and from time to time; provided, however, that approval of the Company’s stockholders shall be required to amend the Plan to: (a) increase the aggregate number, or change the type, of shares that
may be sold pursuant to rights under the Plan under Section 3.1 (other than an adjustment as provided by Article VIII); (b) change the corporations or classes of corporations whose employees may be granted rights under the Plan; or
(c) change the Plan in any manner that would cause the Plan to no longer be an “employee stock purchase plan” within the meaning of Section 423(b) of the Code. 

9.2    Certain Changes to Plan. Without stockholder consent and without regard to whether any
Participant rights may be considered to have been adversely affected, to the extent permitted by Section 423 of the Code, the Administrator shall be entitled to change or terminate the Offering Periods, limit the frequency and/or number of
changes in the amount withheld from Compensation during an Offering Period, establish the exchange ratio applicable to amounts withheld in a currency other than U.S. dollars, permit payroll withholding in excess of the amount designated by a
Participant in order to adjust for delays or mistakes in the Company’s processing of payroll withholding elections, establish reasonable waiting and adjustment periods and/or accounting and crediting procedures to ensure that amounts applied
toward the purchase of Common Stock for each Participant properly correspond with amounts withheld from the Participant’s Compensation, and establish such other limitations or procedures as the Administrator determines in its sole discretion to
be advisable that are consistent with the Plan. 
 9.3    Actions In the Event of Unfavorable
Financial Accounting Consequences. In the event the Administrator determines that the ongoing operation of the Plan may result in unfavorable financial accounting consequences, the Administrator may, in its discretion and, to the extent
necessary or desirable, modify or amend the Plan to reduce or eliminate such accounting consequence including, but not limited to: 

(a)      altering the Purchase Price for any Offering Period including an Offering Period
underway at the time of the change in Purchase Price; 
 (b)      shortening any Offering
Period so that the Offering Period ends on a new Purchase Date, including an Offering Period underway at the time of the Administrator action; and 

(c)      allocating Shares. 

Such modifications or amendments shall not require stockholder approval or the consent of any Participant. 

9.4    Payments Upon Termination of Plan. Upon termination of the Plan, the balance in each
Participant’s Plan account shall be refunded as soon as practicable after such termination, without any interest thereon. 
 ARTICLE
X. 
 TERM OF PLAN 

The Plan shall be effective on the Effective Date. The effectiveness of the Plan shall be subject to approval of the Plan by
the stockholders of the Company within twelve months following the date the Plan is first approved by the Board. No right may be granted under the Plan prior to such stockholder approval. The Plan shall be in effect until terminated under
Section 9.1 hereof. No rights may be granted under the Plan during any period of suspension of the Plan or after termination of the Plan. 

  
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 ARTICLE XI. 

ADMINISTRATION 

11.1    Administrator. Unless otherwise determined by the Board, the Administrator of the Plan
shall be the Compensation Committee of the Board (or another committee or a subcommittee of the Board to which the Board delegates administration of the Plan) (such committee, the “Committee”). The Board may at any time vest
in the Board any authority or duties for administration of the Plan. 
 11.2    Action by the
Administrator. Unless otherwise established by the Board or in any charter of the Administrator, a majority of the Administrator shall constitute a quorum. The acts of a majority of the members present at any meeting at which a quorum is present
and, subject to Applicable Law and the Bylaws of the Company, acts approved in writing by a majority of the Administrator in lieu of a meeting, shall be deemed the acts of the Administrator. Each member of the Administrator is entitled to, in good
faith, rely or act upon any report or other information furnished to that member by any officer or other employee of the Company or any Designated Subsidiary, the Company’s independent certified public accountants, or any executive compensation
consultant or other professional retained by the Company to assist in the administration of the Plan. 

11.3    Authority of Administrator. The Administrator shall have the power, subject to, and within
the limitations of, the express provisions of the Plan: 
 (a)      To determine when and how
rights to purchase Common Stock shall be granted and the provisions of each offering of such rights (which need not be identical). 

(b)    To designate from time to time which Subsidiaries of the Company shall be Designated Subsidiaries,
which designation may be made without the approval of the stockholders of the Company. 

(c)      To construe and interpret the Plan and rights granted under it, and to establish, amend
and revoke rules and regulations for its administration. The Administrator, in the exercise of this power, may correct any defect, omission or inconsistency in the Plan, in a manner and to the extent it shall deem necessary or expedient to make the
Plan fully effective. 
 (d)      To amend, suspend or terminate the Plan as provided in
Article IX. 
 (e)      Generally, to exercise such powers and to perform such acts as
the Administrator deems necessary or expedient to promote the best interests of the Company and its Subsidiaries and to carry out the intent that the Plan be treated as an “employee stock purchase plan” within the meaning of
Section 423 of the Code. 
 11.4    Decisions Binding. The Administrator’s
interpretation of the Plan, any rights granted pursuant to the Plan, any subscription agreement and all decisions and determinations by the Administrator with respect to the Plan are final, binding, and conclusive on all parties. 

ARTICLE XII. 

MISCELLANEOUS 

12.1    Restriction upon Assignment. A right granted under the Plan shall not be transferable other
than by will or the applicable laws of descent and distribution, and is exercisable during the Participant’s lifetime only by the Participant. Except as provided in Section 12.4 hereof, a right under the Plan may not be exercised to any
extent except by the Participant. The Company shall not recognize and shall be under no duty to recognize any assignment or alienation of the Participant’s interest in the Plan, the Participant’s rights under the Plan or any rights
thereunder. 

  
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 12.2    Rights as a Stockholder. With
respect to Shares subject to a right granted under the Plan, a Participant shall not be deemed to be a stockholder of the Company, and the Participant shall not have any of the rights or privileges of a stockholder, until such Shares have been
issued to the Participant or his or her nominee following exercise of the Participant’s rights under the Plan. No adjustments shall be made for dividends (ordinary or extraordinary, whether in cash securities, or other property) or distribution
or other rights for which the record date occurs prior to the date of such issuance, except as otherwise expressly provided herein or as determined by the Administrator. 

12.3    Interest. No interest shall accrue on the payroll deductions or contributions of a
Participant under the Plan. 
 12.4    Designation of Beneficiary. 

(a)      A Participant may, in the manner determined by the Administrator, file a written
designation of a beneficiary who is to receive any Shares and/or cash, if any, from the Participant’s account under the Plan in the event of such Participant’s death subsequent to a Purchase Date on which the Participant’s rights are
exercised but prior to delivery to such Participant of such Shares and cash. In addition, a Participant may file a written designation of a beneficiary who is to receive any cash from the Participant’s account under the Plan in the event of
such Participant’s death prior to exercise of the Participant’s rights under the Plan. If the Participant is married and resides in a community property state, a designation of a person other than the Participant’s spouse as his or
her beneficiary shall not be effective without the prior written consent of the Participant’s spouse. 

(b)      Such designation of beneficiary may be changed by the Participant at any time by
written notice to the Company. In the event of the death of a Participant and in the absence of a beneficiary validly designated under the Plan who is living at the time of such Participant’s death, the Company shall deliver such Shares and/or
cash to the executor or administrator of the estate of the Participant, or if no such executor or administrator has been appointed (to the knowledge of the Company), the Company, in its discretion, may deliver such Shares and/or cash to the spouse
or to any one or more dependents or relatives of the Participant, or if no spouse, dependent or relative is known to the Company, then to such other person as the Company may designate. 

12.5    Notices. All notices or other communications by a Participant to the Company under or in
connection with the Plan shall be deemed to have been duly given when received in the form specified by the Company at the location, or by the person, designated by the Company for the receipt thereof. 

12.6    Equal Rights and Privileges. Subject to Section 5.7, all Eligible Employees will have
equal rights and privileges under this Plan so that this Plan qualifies as an “employee stock purchase plan” within the meaning of Section 423 of the Code. Subject to Section 5.7, any provision of this Plan that is inconsistent
with Section 423 of the Code will, without further act or amendment by the Company, the Board or the Administrator, be reformed to comply with the equal rights and privileges requirement of Section 423 of the Code. 

12.7    Use of Funds. All payroll deductions or contributions received or held by the Company under
the Plan may be used by the Company for any corporate purpose, and the Company shall not be obligated to segregate such payroll deductions or contributions. 

12.8    Reports. Statements of account shall be given to Participants at least annually, which
statements shall set forth the amounts of payroll deductions or contributions, the Purchase Price, the number of Shares purchased and the remaining cash balance, if any. 

12.9    No Employment Rights. Nothing in the Plan shall be construed to give any person (including
any Eligible Employee or Participant) the right to remain in the employ of the Company or any 

  
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Parent or Subsidiary or affect the right of the Company or any Parent or Subsidiary to terminate the employment of any person (including any Eligible Employee or Participant) at any time, with or
without cause. 
 12.10    Notice of Disposition of Shares. Each Participant shall give prompt
notice to the Company of any disposition or other transfer of any Shares purchased upon exercise of a right under the Plan if such disposition or transfer is made: (a) within two years from the Grant Date of the Offering Period in which the
Shares were purchased or (b) within one year after the Purchase Date on which such Shares were purchased. Such notice shall specify the date of such disposition or other transfer and the amount realized, in cash, other property, assumption of
indebtedness or other consideration, by the Participant in such disposition or other transfer. 

12.11    Governing Law. The Plan and any agreements hereunder shall be administered, interpreted
and enforced under the internal laws of the State of Delaware without regard to conflicts of laws thereof or of any other jurisdiction. 

12.12    Electronic Forms. To the extent permitted by Applicable Law and in the discretion of the
Administrator, an Eligible Employee may submit any form or notice as set forth herein by means of an electronic form approved by the Administrator. Before the commencement of an Offering Period, the Administrator shall prescribe the time limits
within which any such electronic form shall be submitted to the Administrator with respect to such Offering Period in order to be a valid election. 

  
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