Document:

2008 Equity Incentive Award Plan

 Exhibit 10.3 
 CHEMOCENTRYX, INC. 
 2008 EQUITY INCENTIVE AWARD PLAN 
 ARTICLE 1 
 PURPOSE 

The purpose of the ChemoCentryx, Inc. 2008 Equity Incentive Award Plan (the “Plan”) is to promote the success and enhance the
value of ChemoCentryx, Inc. (the “Company”) by linking the personal interests of the members of the Board, Employees, and Consultants to those of Company stockholders and by providing such individuals with an incentive for
outstanding performance to generate superior returns to Company stockholders. The Plan is further intended to provide flexibility to the Company in its ability to motivate, attract, and retain the services of members of the Board, Employees, and
Consultants upon whose judgment, interest, and special effort the successful conduct of the Company’s operation is largely dependent. 
 All share numbers set forth in this Plan give effect to the reverse stock split implemented by the Company in connection with its initial public offering. 
 ARTICLE 2 
 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. 
 2.1 “Administrator” means the entity or
person that conducts the general administration of the Plan as provided herein. With reference to the administration of the Plan with respect to Awards granted to Independent Directors, the term “Administrator” shall refer to the Board.
With reference to the administration of the Plan with respect to any other Award, the term “Administrator” shall refer to the Committee unless the Board has assumed the authority for administration of the Plan generally as provided in
Section 12.1. With reference to the duties of the Committee under the Plan which have been delegated to one or more persons pursuant to Section 12.5 of the Plan, the term “Administrator” shall refer to such person(s) unless the
Committee or the Board has revoked such delegation. 
 2.2 “Award” means an Option, a Restricted Stock award, a Stock
Appreciation Right award, a Dividend Equivalents award, a Stock Payment award, a Restricted Stock Unit award, an Other Stock-Based Award, or a Performance Bonus Award granted to a Participant pursuant to the Plan. 
 2.3 “Award Agreement” means any written agreement, contract, or other instrument or document evidencing an Award, including
through electronic medium. 
 2.4 “Board” means the Board of Directors of the Company. 
 2.5 “Change in Control” means and includes each of the following: 
 (a) A transaction or series of transactions (other than an offering of Stock to the general public through a registration statement filed with the
Securities and Exchange Commission) 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 Section 2.5(a) or Section 2.5(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 Section 2.4(c)(ii) as beneficially owning 50% or more of 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 discretion, to determine conclusively whether a Change in Control of the Company has occurred pursuant to the above definition, and the date of the
occurrence of such Change in Control and any incidental matters relating thereto. 
 2.6 “Code” means the Internal
Revenue Code of 1986, as amended from time to time, and the regulations issued thereunder. 
 2.7 “Committee” means
the committee of the Board described in Article 12. 
 2.8 “Consultant” means any consultant or adviser if:

 (a) The consultant or adviser renders bona fide services to the Company or any Parent or Subsidiary; 
  

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 (b) The services rendered by the consultant or adviser are not in connection with the offer or sale of
securities in a capital-raising transaction and do not directly or indirectly promote or maintain a market for the securities of the Company or of any Parent or Subsidiary; and 
 (c) The consultant or adviser is a natural person. 
 2.9 “Covered Employee” means an Employee who is, or could be, a “covered employee” within the meaning of Section 162(m) of the Code. 
 2.10 “Director” means a member of the Board, or as applicable a member of the board of directors of a Subsidiary. 
 2.11 “Disability” means “disability,” as such term is defined in Section 22(e)(3) of the Code. 
 2.12 “Dividend Equivalents” means a right granted to a Participant pursuant to Section 8.1 to receive the equivalent value
(in cash or Stock) of dividends paid on Stock. 
 2.13 “Effective Date” has the meaning set forth in
Section 13.1. 
 2.14 “Eligible Individual” means any person who is an Employee, a Consultant or a Director, as
determined by the Administrator. 
 2.15 “Employee” means any officer or other employee (as defined in accordance
with Section 3401(c) of the Code) of the Company or of any Parent or Subsidiary. 
 2.16 “Equity Restructuring”
shall mean a nonreciprocal transaction between the company and its stockholders, such as a stock dividend, stock split, spin-off, rights offering or recapitalization through a large, nonrecurring cash dividend, that affects the shares of Stock (or
other securities of the Company) or the share price of Stock (or other securities) and causes a change in the per share value of the Stock underlying outstanding Awards. 
 2.17 “Exchange Act” means the Securities Exchange Act of 1934, as amended. 
 2.18
“Expiration Date” has the meaning set forth in Section 13.2. 
 2.19 “Fair Market Value”
means, as of any given date, the fair market value of a share of Stock on the date determined by such methods or procedures as may be established from time to time by the Administrator. Unless otherwise determined by the Administrator, the Fair
Market Value of a share of Stock as of any given date shall be (a) if Stock is traded on any established stock exchange, the closing price of a share of Stock as reported in the Wall Street Journal (or such other source as the
Administrator may deem reliable for such purposes) for such date, or if no sale occurred on such date, the first trading date immediately prior to such date during which a sale occurred; or (b) if Stock is not traded on an exchange but is
quoted on a national market or other quotation system, the last sales price on such date, or if no sales occurred on such date, then on the date immediately prior to such date on which sales price are reported. 
 2.20 “Incentive Stock Option” means an Option that is intended to be an incentive stock option and meets the requirements of
Section 422 of the Code or any successor provision thereto. 
 2.21 “Independent Director” means a Director of
the Company who is not an Employee. 
  

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 2.22 “Misconduct” means the occurrence of any of, but not limited to, the
following: (i) conviction of the Participant of any felony or any crime involving fraud or dishonesty; (ii) the Participant’s participation (whether by affirmative act or omission) in a fraud, act or dishonesty or other act of
misconduct against the Company and/or any Parent or Subsidiary; (iii) conduct by the Participant which, based upon a good faith and reasonable factual investigation by the Company (or, if the Participant is an executive officer, by the Board),
demonstrates the Participant’s unfitness to serve; (iv) the Participant’s violation of any statutory or fiduciary duty, or duty of loyalty owed to the Company and/or any Parent or Subsidiary; (v) the Participant’s violation
of state or federal law in connection with the Participant’s performance of his or her job which has an adverse effect on the Company and/or any Parent or Subsidiary; and (vi) the Participant’s violation of Company policy which has a
material adverse effect on the Company and/or any Parent or Subsidiary. Notwithstanding the foregoing, the Participant’s Disability shall not constitute Misconduct as set forth herein. The determination that a termination is for Misconduct
shall be by the Administrator it its sole and exclusive judgment and discretion. 
 2.23 “Non-Employee Director”
means a Director of the Company who qualifies as a “Non-Employee Director” as defined in Rule 16b-3(b)(3) of the Exchange Act, or any successor definition. 
 2.24 “Non-Qualified Stock Option” means an Option that is not intended to be or otherwise does not qualify as an Incentive Stock Option. 
 2.25 “Option” means a right granted to a Participant pursuant to Article 5 of the Plan to purchase a specified number of shares
of Stock at a specified price during specified time periods. An Option may be either an Incentive Stock Option or a Non-Qualified Stock Option. 
 2.26 “Other Stock-Based Award” means an Award granted or denominated in Stock or units of Stock pursuant to Section 8.4 of the Plan. 
 2.27 “Parent” means any “parent corporation, as defined in Section 424(e) of the Code and any applicable regulations promulgated thereunder, of the Company or any other entity which
beneficially owns, directly or indirectly, a majority of the outstanding voting stock or voting power of the Company. 
 2.28
“Participant” means any Eligible Individual who, as a member of the Board, Consultant or Employee, has been granted an Award pursuant to the Plan. 
 2.29 “Performance-Based Award” means an Award granted to selected Covered Employees pursuant to Articles 6 and 8, but which is subject to the terms and conditions set forth in Article 9.

 2.30 “Performance Bonus Award” has the meaning set forth in Section 8.5. 
 2.31 “Performance Criteria” means the criteria that the Administrator selects for purposes of establishing the Performance Goal
or Performance Goals for a Participant for a Performance Period. The Performance Criteria that will be used to establish Performance Goals are limited to the following: net earnings (either before or after interest, taxes, depreciation and
amortization), sales or revenue, net income (either before or after taxes), operating earnings, cash flow (including, but not limited to, operating cash flow and free cash flow), return on net assets, return on stockholders’ equity, return on
assets, return on capital, return on sales, gross or net profit margin, working capital, earnings per share of Stock, and price per share of Stock, any of which may be measured either in absolute terms or as compared to any incremental increase or
as compared to results of a peer group. To the extent an Award is intended to be Qualified Performance-Based Compensation, the Administrator shall, within the time prescribed by Section 162(m) of the Code, define in an objective fashion the
manner of calculating the Performance Criteria it selects to use for such Performance Period for such Participant. 
  

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 2.32 “Performance Goals” means, for a Performance Period, the goals established
in writing by the Administrator for the Performance Period based upon the Performance Criteria. Depending on the Performance Criteria used to establish such Performance Goals, the Performance Goals may be expressed in terms of overall Company
performance or the performance of a Subsidiary, division or other operational unit, or an individual. To the extent an Award is intended to be Qualified Performance-Based Compensation, the Administrator, in its discretion, may, within the time
prescribed by Section 162(m) of the Code, adjust or modify the calculation of Performance Goals for such Performance Period in order to prevent the dilution or enlargement of the rights of Participants (a) in the event of, or in
anticipation of, any unusual or extraordinary corporate item, transaction, event, or development, or (b) in recognition of, or in anticipation of, any other unusual or nonrecurring events affecting the Company, or the financial statements of
the Company, or in response to, or in anticipation of, changes in applicable laws, regulations, accounting principles, or business conditions. 
 2.33 “Performance Period” means the one or more periods of time, which may be of varying and overlapping durations, as the Administrator may select, over which the attainment of one or more Performance Goals will be
measured for the purpose of determining a Participant’s right to, and the payment of, a Performance-Based Award. 
 2.34
“Plan” means this ChemoCentryx, Inc. 2008 Equity Incentive Award Plan, as it may be amended from time to time. 
 2.35 “Public Trading Date” means the first date upon which the Company is subject to the reporting requirements of Section 13 or 15(d)(2) of the Exchange Act. 
 2.36 “Qualified Performance-Based Compensation” means any compensation that is intended to qualify as “qualified
performance-based compensation” as described in Section 162(m)(4)(C) of the Code. 
 2.37 “Restricted
Stock” means Stock awarded to a Participant pursuant to Article 6 that is subject to certain restrictions and may be subject to risk of forfeiture or repurchase. 
 2.38 “Restricted Stock Unit” means a right to receive a share of Stock during specified time periods granted pursuant to
Section 8.3. 
 2.39 “Securities Act” means the Securities Act of 1933, as amended. 
 2.40 “Stock” means the common stock of the Company, par value $0.001 per share, and such other securities of the Company that may
be substituted for Stock pursuant to Article 11. 
 2.41 “Stock Appreciation Right” means a right granted pursuant to
Article 7 to receive a payment equal to the excess of the Fair Market Value of a specified number of shares of Stock on the date the Stock Appreciation Right is exercised over the Fair Market Value of such number of shares of Stock on the date the
Stock Appreciation Right was granted as set forth in the applicable Award Agreement. 
 2.42 “Stock Payment” means
(a) a payment in the form of shares of Stock, or (b) an option or other right to purchase shares of Stock, as part of any bonus, deferred compensation or other arrangement, made in lieu of all or any portion of the compensation, granted
pursuant to Section 8.2. 
 2.43 “Subsidiary” means any “subsidiary corporation” as defined in
Section 424(f) of the Code and any applicable regulations promulgated thereunder of the Company or any other entity of which a majority of the outstanding voting stock or voting power is beneficially owned directly or indirectly by the Company.

  

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 2.44 “Successor Entity” has the meaning set forth in Section 2.5.

 2.46 “Termination of Consultancy” means the time when the engagement of a Participant as a Consultant to the
Company or to a Parent or Subsidiary is terminated for any reason, with or without cause, including, but not by way of limitation, by resignation, discharge, death or retirement, but excluding: (a) terminations where there is a simultaneous
employment or continuing employment of the Participant by the Company or any Parent or Subsidiary, and (b) terminations where there is a simultaneous reestablishment of a consulting relationship or continuing consulting relationship between the
Participant and the Company or any Parent or Subsidiary. The Administrator, in its absolute discretion, shall determine the effect of all matters and questions relating to Termination of Consultancy, including, but not by way of limitation, the
question of whether a particular leave of absence constitutes a Termination of Consultancy. Notwithstanding any other provision of the Plan, the Company or any Parent or Subsidiary has an absolute and unrestricted right to terminate a
Consultant’s service at any time for any reason whatsoever, with or without cause, except to the extent expressly provided otherwise in writing. 
 2.47 “Termination of Directorship” means the time when a Participant, if he or she is or becomes an Independent Director, ceases to be a Director for any reason, including, but not by way of
limitation, a termination by resignation, failure to be elected, death or retirement. The Board, in its sole and absolute discretion, shall determine the effect of all matters and questions relating to Termination of Directorship with respect to
Independent Directors. 
 2.48 “Termination of Employment” means the time when the employee-employer relationship
between a Participant and the Company or any Parent or Subsidiary is terminated for any reason, with or without cause, including, but not by way of limitation, a termination by resignation, discharge, death, Disability or retirement; but excluding:
(a) terminations where there is a simultaneous reemployment or continuing employment of the Participant by the Company or any Parent or Subsidiary, and (b) terminations where there is a simultaneous establishment of a consulting
relationship or continuing consulting relationship between the Participant and the Company or any Parent or Subsidiary. The Administrator, in its absolute discretion, shall determine the effect of all matters and questions relating to Termination of
Employment, including, but not by way of limitation, the question of whether a particular leave of absence constitutes a Termination of Employment. 
 2.49 “Termination of Service” shall mean the last to occur of a Participant’s Termination of Consultancy, Termination of Directorship or Termination of Employment, as applicable. A Participant shall not be
deemed to have a Termination of Service merely because of a change in the capacity in which the Participant renders service to the Company or any Parent or Subsidiary (i.e., a Participant who is an Employee becomes a Consultant) or a change in the
entity for which the Participant renders such service (i.e., an Employee of the Company becomes an Employee of a Subsidiary), unless following such change in capacity or service the Participant is no longer serving as an Employee, Independent
Director or Consultant of the Company or any Parent or Subsidiary. 
  

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 ARTICLE 3 
 SHARES SUBJECT TO THE PLAN 
 3.1 Number of Shares. 
 (a) Subject to Article 11 and Section 3.1(b), the aggregate number of shares of Stock which may be issued or transferred pursuant to Awards under the
Plan shall be the sum of: (i) 2,500,000 shares of Stock; plus (ii) the number of shares of Stock remaining available for issuance and not subject to awards granted under the ChemoCentryx, Inc. 2002 Equity Incentive Plan (the
“Existing Plan”) as of the Effective Date; plus (iii) with respect to awards granted under the Existing Plan on or before the Effective Date that expire or are canceled without having been exercised in full or shares of
Stock that are forfeited or repurchased pursuant to the terms of awards granted under the Existing Plan, the number of shares of Stock subject to each such award as to which such award was not exercised prior to its expiration or cancellation or
which are forfeited or repurchased by the Company. The aggregate number of shares of Stock authorized for issuance under the Existing Plan was 6,300,000 shares of Stock and, accordingly, the total number of shares of Stock under clauses
(ii) and (iii) in the preceding sentence shall not exceed 6,300,000 shares of Stock. In addition, subject to Article 11, commencing on January 1, 2009, and on each January 1 thereafter during the term of the Plan, the number of
shares of Stock which shall be made available for sale under the Plan shall be increased by that number of shares of Stock equal to the least of: (i) 1,000,000 shares (which number shall increase to 1,500,000 for the increases on
January 1, 2011 and 2012, and to 2,000,000 for the increases on January 1, 2013, 2014, 2015, 2016 and 2017); (ii) four percent (4%) of the Company’s outstanding shares of Stock on the applicable January 1; and
(iii) a lesser number of shares of Stock as determined by the Board. Accordingly, the number of shares of Stock which shall be available for sale under the Plan shall be subject to increase under the preceding sentence only on January 1,
2009 and on each subsequent January 1 through and including January 1, 2017. Notwithstanding anything in this Section 3.1(a) to the contrary, the number of shares of Stock that may be issued or transferred pursuant to Awards under the
Plan shall not exceed an aggregate of 24,800,000 shares of Stock, subject to Article 11. In order that the applicable regulations under the Code relating to Incentive Stock Options be satisfied, the maximum number of shares of Stock that may be
delivered upon exercise of Incentive Stock Options shall be the number specified in the preceding sentence, and, if necessary to satisfy such regulations, such maximum limit shall apply to the number of shares of Stock that may be delivered in
connection with each other type of Award under the Plan (applicable separately to each type of Award). 
 (b) To the extent that an Award
terminates, expires, or lapses for any reason, any shares of Stock subject to the Award shall again be available for the grant of an Award pursuant to the Plan. Additionally, any shares of Stock tendered or withheld to satisfy the grant or exercise
price or tax withholding obligation pursuant to any Award shall again be available for the grant of an Award pursuant to the Plan. If any shares of Restricted Stock are forfeited by a Participant or repurchased by the Company pursuant to Article 6
hereof, such shares shall again be available for the grant of an Award pursuant to the Plan. To the extent permitted by applicable law or any exchange rule, shares of Stock issued in assumption of, or in substitution for, any outstanding awards of
any entity acquired in any form of combination by the Company or any Parent or Subsidiary shall not be counted against shares of Stock available for grant pursuant to the Plan. The payment of Dividend Equivalents in cash in conjunction with any
outstanding Awards shall not be counted against the shares of Stock available for issuance under the Plan. 
 (c) Notwithstanding the
provisions of this Section 3.1(b), no shares of Stock may again be optioned, granted or awarded if such action would cause an Incentive Stock Option to fail to qualify as an incentive stock option under Section 422 of the Code. 

 

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 3.2 Stock Distributed. Any shares of Stock distributed pursuant to an Award may consist, in whole
or in part, of authorized and unissued Stock, treasury Stock or Stock purchased on the open market. 
 3.3 Limitation on Number of Shares
and Values Subject to Awards. Notwithstanding any provision in the Plan to the contrary, and subject to Article 11, the maximum number of shares of Stock with respect to one or more Awards that may be granted to any one Participant during any
calendar year shall be 2,500,000 shares and the maximum amount that may be paid in cash during any calendar year with respect to any Performance-Based Award (including, without limitation, any Performance Bonus Award) shall be $2,500,000;
provided, however, that the foregoing limitations shall not apply prior to the Public Trading Date and, following the Public Trading Date, the foregoing limitations shall not apply until the earliest of: (a) the first material modification
of the Plan (including any increase in the number of shares of Stock reserved for issuance under the Plan in accordance with Section 3.1); (b) the issuance of all of the shares of Stock reserved for issuance under the Plan; (c) the
expiration of the Plan; (d) the first meeting of stockholders at which members of the Board are to be elected that occurs after the close of the third calendar year following the calendar year in which occurred the first registration of an
equity security of the Company under Section 12 of the Exchange Act; or (e) such other date required by Section 162(m) of the Code and the rules and regulations promulgated thereunder. 
 ARTICLE 4 
 ELIGIBILITY AND
PARTICIPATION 
 4.1 Eligibility. Each Eligible Individual shall be eligible to be granted one or more Awards pursuant to the
Plan. 
 4.2 Participation. Subject to the provisions of the Plan, the Administrator may, from time to time, select from among all
Eligible Individuals, those to whom Awards shall be granted and shall determine the nature and amount of each Award. No Eligible Individual shall have any right to be granted an Award pursuant to this Plan. 
 4.3 Foreign Participants. In order to assure the viability of Awards granted to Participants employed in foreign countries, the Administrator may
provide for such special terms as it may consider necessary or appropriate to accommodate differences in local law, tax policy, or custom. Moreover, the Administrator may approve such supplements to, or amendments, restatements, or alternative
versions of, the Plan as it may consider necessary or appropriate for such purposes without thereby affecting the terms of the Plan as in effect for any other purpose; provided, however, that no such supplements, amendments, restatements, or
alternative versions shall increase the limitations on the number of shares of Stock (a) issued or transferred pursuant to Awards under the Plan, as detailed in Section 3.1, and (b) issued or transferred pursuant to Awards granted to
any one Participant during any calendar year, as detailed in Section 3.3 of the Plan. 
 ARTICLE 5 
 STOCK OPTIONS 
 5.1 General.
The Administrator is authorized to grant Options to Eligible Individuals on the following terms and conditions: 
 (a) Exercise Price.
The exercise price per share of Stock subject to an Option shall be determined by the Administrator and set forth in the Award Agreement; provided that, subject to Section 5.2(d), the exercise price for any Option shall not be less than
par value of a share of Stock on the date of grant. 
  

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 (b) Time and Conditions of Exercise. The Administrator shall determine the time or times at which
an Option may be exercised in whole or in part. The Administrator shall also determine the performance or other conditions, if any, that must be satisfied before all or part of an Option may be exercised. 
 (c) Payment. The Administrator shall determine the methods, terms and conditions by which the exercise price of an Option may be paid, and the
form and manner of payment, including, without limitation, payment in the form of: (i) cash, (ii) promissory note bearing interest at no less than such rate as shall then preclude the imputation of interest under the Code,
(iii) shares of Stock held for such period of time as may be required by the Administrator in order to avoid adverse accounting consequences and having a Fair Market Value on the date of delivery equal to the aggregate exercise price of the
Option or exercised portion thereof, or (iv) other property acceptable to the Administrator (including through the delivery of a notice that the Participant has placed a market sell order with a broker with respect to shares of Stock then
issuable upon exercise of the Option, and that the broker has been directed to pay a sufficient portion of the net proceeds of the sale to the Company in satisfaction of the Option exercise price; provided that payment of such proceeds is
then made to the Company upon settlement of such sale). The Administrator shall also determine the methods by which shares of Stock shall be delivered or deemed to be delivered to Participants. Notwithstanding any other provision of the Plan to the
contrary, no Participant who is a Director or an “executive officer” of the Company within the meaning of Section 13(k) of the Exchange Act shall be permitted to pay the exercise price of an Option in any method which would violate
Section 13(k) of the Exchange Act. 
 (d) Evidence of Grant. All Options shall be evidenced by an Award Agreement between the
Company and the Participant. The Award Agreement shall include such additional provisions as may be specified by the Administrator. 
 5.2
Incentive Stock Options. The terms of any Incentive Stock Options granted pursuant to the Plan must comply with the conditions and limitations contained in Section 13.2 and this Section 5.2. 
 (a) Eligibility. Incentive Stock Options may be granted only to employees (as defined in accordance with Section 3401(c) of the Code) of the
Company or a Subsidiary which constitutes a “subsidiary corporation” of the Company within the meaning of Section 424(f) of the Code or a Parent which constitutes a “parent corporation” of the Company within the meaning of
Section 424(e) of the Code. 
 (b) Exercise Price. The exercise price per share of Stock shall be set by the Administrator;
provided that subject to Section 5.2(e) the exercise price for any Incentive Stock Option shall not be less than 100% of the Fair Market Value on the date of grant. 
 (c) Expiration. Subject to Section 5.2(e), an Incentive Stock Option may not be exercised to any extent by anyone after the tenth anniversary
of the date it is granted, unless an earlier time is set in the Award Agreement. 
 (d) Individual Dollar Limitation. The aggregate
Fair Market Value (determined as of the time the Option is granted) of all shares of Stock with respect to which Incentive Stock Options are first exercisable by a Participant in any calendar year may not exceed $100,000 or such other limitation as
imposed by Section 422(d) of the Code, or any successor provision. To the extent that Incentive Stock Options are first exercisable by a Participant in excess of such limitation, the excess shall be considered Non-Qualified Stock Options.

  

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 (e) Ten Percent Owners. An Incentive Stock Option shall be granted to any individual who, at the
date of grant, owns stock possessing more than ten percent of the total combined voting power of all classes of Stock of the Company or any “subsidiary corporation” of the Company or “parent corporation” of the Company (each
within the meaning of Section 424 of the Code) only if such Option is granted at an exercise price per share that is not less than 110% of the Fair Market Value per share of the Stock on the date of grant and the Option is exercisable for no
more than five years from the date of grant. 
 (f) Notice of Disposition. The Participant shall give the Company prompt notice of any
disposition of shares of Stock acquired by exercise of an Incentive Stock Option within (i) two years from the date of grant of such Incentive Stock Option or (ii) one year after the transfer of such shares of Stock to the Participant.

 (g) Transferability; Right to Exercise. An Incentive Stock Option shall not be transferable by the Participant other than by will
or by the laws of descent or distribution. During a Participant’s lifetime, an Incentive Stock Option may be exercised only by the Participant. 
 (h) Failure to Meet Requirements. Any Option (or portion thereof) purported to be an Incentive Stock Option, which, for any reason, fails to meet the requirements of Section 422 of the Code shall be
considered a Non-Qualified Stock Option. 
 5.3 Substitution of Stock Appreciation Rights. The Administrator may provide in the Award
Agreement evidencing the grant of an Option that the Administrator, in its sole discretion, shall have to right to substitute a Stock Appreciation Right for such Option at any time prior to or upon exercise of such Option, subject to the provisions
of Section 7.2 hereof; provided that such Stock Appreciation Right shall be exercisable with respect to the same number of shares of Stock for which such substituted Option would have been exercisable. 
 ARTICLE 6 
 RESTRICTED STOCK AWARDS

 6.1 Grant of Restricted Stock. The Administrator is authorized to make Awards of Restricted Stock to any Eligible Individual
selected by the Administrator in such amounts and subject to such terms and conditions as determined by the Administrator. All Awards of Restricted Stock shall be evidenced by an Award Agreement. 
 6.2 Issuance and Restrictions. Restricted Stock shall be subject to such repurchase restrictions, forfeiture restrictions, restrictions on
transferability and other restrictions as the Administrator may impose (including, without limitation, limitations on the right to vote Restricted Stock or the right to receive dividends on the Restricted Stock). These restrictions may lapse
separately or in combination at such times, pursuant to such circumstances, in such installments, or otherwise, as the Administrator determines at the time of the grant of the Award or thereafter. 
 6.3 Repurchase or Forfeiture. Except as otherwise determined by the Administrator at the time of the grant of the Award or thereafter, upon
Termination of Service during the applicable restriction period, Restricted Stock that is at that time subject to restrictions shall be forfeited or subject to repurchase by the Company (or its assignee) under such terms as the Administrator shall
determine; provided, however, that the Administrator may (a) provide in any Award Agreement that restrictions or forfeiture conditions relating to Restricted Stock will be waived in whole or in part in the event of a Participant’s
Termination of Service under certain circumstances, and (b) in other cases waive in whole or in part restrictions or forfeiture conditions relating to Restricted Stock. 
  

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 6.4 Certificates for Restricted Stock. Restricted Stock granted pursuant to the Plan may be
evidenced in such manner as the Administrator shall determine. If certificates representing shares of Restricted Stock are registered in the name of the Participant, certificates must bear an appropriate legend referring to the terms, conditions,
and restrictions applicable to such Restricted Stock, and the Company may, at its discretion, retain physical possession of the certificate until such time as all applicable restrictions lapse or the Award Agreement may provide that the shares shall
be held in escrow by an escrow agent designated by the Company. 
 ARTICLE 7 
 STOCK APPRECIATION RIGHTS 
 7.1 Grant of Stock Appreciation Rights. A
Stock Appreciation Right may be granted to any Eligible Individual selected by the Administrator. A Stock Appreciation Right shall be subject to such terms and conditions not inconsistent with the Plan as the Administrator shall impose and shall be
evidenced by an Award Agreement. 
 7.2 Stock Appreciation Rights. 
 (a) A Stock Appreciation Right shall have a term set by the Administrator. A Stock Appreciation Right shall be exercisable in such installments as the
Administrator may determine. A Stock Appreciation Right shall cover such number of shares of Stock as the Administrator may determine. The exercise price per share of Stock subject to each Stock Appreciation Right shall be set by the Administrator;
provided, however, that the Administrator in its sole and absolute discretion may provide that the Stock Appreciation Right may be exercised subsequent to a Termination of Service or following a Change in Control of the Company, or because of
the Participant’s retirement, death or Disability, or otherwise. 
 (b) A Stock Appreciation Right shall entitle the Participant (or
other person entitled to exercise the Stock Appreciation Right pursuant to the Plan) to exercise all or a specified portion of the Stock Appreciation Right (to the extent then exercisable pursuant to its terms) and to receive from the Company an
amount determined by multiplying (i) the amount (if any) by which the Fair Market Value of a share of Stock on the date of exercise of the Stock Appreciation Right exceeds the exercise price per share of the Stock Appreciation Right, by
(ii) the number of shares of Stock with respect to which the Stock Appreciation Right shall have been exercised, subject to any limitations the Administrator may impose. 
 7.3 Payment and Limitations on Exercise. 
 (a) Payment of the amounts determined under Section 7.2(b) above shall be in cash, in Stock (based on its Fair Market Value as of the date the Stock Appreciation Right is exercised) or a combination of both, as determined by the
Administrator. 
 (b) To the extent any payment under Section 7.2(b) is effected in Stock it shall be made subject to satisfaction of
all provisions of Article 5 above pertaining to Options. 
  

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 ARTICLE 8 
 OTHER TYPES OF AWARDS 
 8.1 Dividend Equivalents. 
 (a) Any Eligible Individual selected by the Administrator may be granted Dividend Equivalents based on the dividends on the shares of Stock that are
subject to any Award, to be credited as of dividend payment dates, during the period between the date the Award is granted and the date the Award is exercised, vests or expires, as determined by the Administrator. Such Dividend Equivalents shall be
converted to cash or additional shares of Stock by such formula and at such time and subject to such limitations as may be determined by the Administrator. 
 (b) Dividend Equivalents granted with respect to Options or Stock Appreciation Rights that are intended to be Qualified Performance-Based Compensation shall be payable, with respect to pre-exercise periods, regardless
of whether such Option or Stock Appreciation Right is subsequently exercised. 
 8.2 Stock Payments. Any Eligible Individual selected
by the Administrator may receive Stock Payments in the manner determined from time to time by the Administrator. The number of shares of Stock or the number of options or other rights to purchase shares of Stock subject to a Stock Payment shall be
determined by the Administrator and may be based upon the Performance Criteria or other specific performance goals determined appropriate by the Administrator. 
 8.3 Restricted Stock Units. The Administrator is authorized to make Awards of Restricted Stock Units to any Eligible Individual selected by the Administrator in such amounts and subject to such terms and
conditions as determined by the Administrator. At the time of grant, the Administrator shall specify the date or dates on which the Restricted Stock Units shall become fully vested and nonforfeitable, and may specify such conditions to vesting as it
deems appropriate. At the time of grant, the Administrator shall specify the maturity date applicable to each grant of Restricted Stock Units which shall be no earlier than the vesting date or dates of the Award and may be determined at the election
of the Eligible Individual to whom the Award is granted. On the maturity date, the Company shall, subject to Section 10.5(b), transfer to the Participant one unrestricted, fully transferable share of Stock for each Restricted Stock Unit that is
vested and scheduled to be distributed on such date and not previously forfeited. The Administrator shall specify the purchase price, if any, to be paid by the Participant to the Company for such shares of Stock. 
 8.4 Other Stock-Based Awards. Any Eligible Individual selected by the Administrator may be granted one or more Awards that provide Participants
with shares of Stock or the right to purchase shares of Stock or that have a value derived from the value of, or an exercise or conversion privilege at a price related to, or that are otherwise payable in shares of Stock and which may be linked to
any one or more of the Performance Criteria or other specific performance criteria determined appropriate by the Administrator, in each case on a specified date or dates or over any period or periods determined by the Administrator. In making such
determinations, the Administrator shall consider (among such other factors as it deems relevant in light of the specific type of Award) the contributions, responsibilities and other compensation of the particular Participant. 
 8.5 Performance Bonus Awards. Any Eligible Individual selected by the Administrator may be granted one or more Performance-Based Awards in the
form of a cash bonus (a “Performance Bonus Award”) payable upon the attainment of Performance Goals that are established by the Administrator and 

  

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relate to one or more of the Performance Criteria, in each case on a specified date or dates or over any period or periods determined by the Administrator.
Any such Performance Bonus Award paid to a Covered Employee shall be based upon objectively determinable bonus formulas established in accordance with Article 9. 
 8.6 Term. Except as otherwise provided herein, the term of any Award of Dividend Equivalents, Stock Payments, Restricted Stock Units or Other Stock-Based Award shall be set by the Administrator in its
discretion. 
 8.7 Exercise or Purchase Price. The Administrator may establish the exercise or purchase price, if any, of any Award of
any Stock Payments, Restricted Stock Units or Other Stock-Based Awards; provided, however, that such price shall not be less than the par value of a share of Stock on the date of grant, unless otherwise permitted by applicable state law.

 8.8 Form of Payment. Payments with respect to any Awards granted under this Article 8 shall be made in cash, in Stock or a
combination of both, as determined by the Administrator. 
 8.9 Award Agreement. All Awards under this Article 8 shall be subject to
such additional terms and conditions as determined by the Administrator and shall be evidenced by a written Award Agreement. 
 ARTICLE 9

 PERFORMANCE-BASED AWARDS 
 9.1 Purpose. The purpose of this Article 9 is to provide the Administrator the ability to qualify Awards other than Options and Stock Appreciation Rights and that are granted pursuant to Articles 6 and 8 as Qualified
Performance-Based Compensation. If the Administrator, in its discretion, decides to grant a Performance-Based Award to a Covered Employee, the provisions of this Article 9 shall control over any contrary provision contained in Articles 6 or 8;
provided, however, that the Administrator may in its discretion grant Awards to Covered Employees that are based on Performance Criteria or Performance Goals but that do not satisfy the requirements of this Article 9. 
 9.2 Applicability. This Article 9 shall apply only to those Covered Employees selected by the Administrator to receive Performance-Based Awards.
The designation of a Covered Employee as a Participant for a Performance Period shall not in any manner entitle the Participant to receive an Award for the period. Moreover, designation of a Covered Employee as a Participant for a particular
Performance Period shall not require designation of such Covered Employee as a Participant in any subsequent Performance Period and designation of one Covered Employee as a Participant shall not require designation of any other Covered Employees as
a Participant in such period or in any other period. 
 9.3 Procedures with Respect to Performance-Based Awards. To the extent
necessary to comply with the Qualified Performance-Based Compensation requirements of Section 162(m)(4)(C) of the Code, with respect to any Award granted under Articles 6 and 8 which may be granted to one or more Covered Employees, no later
than ninety (90) days following the commencement of any fiscal year in question or any other designated fiscal period or period of service (or such other time as may be required or permitted by Section 162(m) of the Code), the
Administrator shall, in writing, (a) designate one or more Covered Employees, (b) select the Performance Criteria applicable to the Performance Period, (c) establish the Performance Goals, and amounts of such Awards, as applicable,
which may be earned for such Performance Period, and (d) specify the relationship between Performance Criteria and the Performance Goals and the amounts of such Awards, as applicable, to be earned by each Covered 

  

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Employee for such Performance Period. Following the completion of each Performance Period, the Administrator shall certify in writing whether the applicable
Performance Goals have been achieved for such Performance Period. In determining the amount earned by a Covered Employee, the Administrator shall have the right to reduce or eliminate (but not to increase) the amount payable at a given level of
performance to take into account additional factors that the Administrator may deem relevant to the assessment of individual or corporate performance for the Performance Period. 
 9.4 Payment of Performance-Based Awards. Unless otherwise provided in the applicable Award Agreement, a Participant must be employed by the
Company or a Parent or Subsidiary on the day a Performance-Based Award for such Performance Period is paid to the Participant. Furthermore, a Participant shall be eligible to receive payment pursuant to a Performance-Based Award for a Performance
Period only if the Performance Goals for such period are achieved. 
 9.5 Additional Limitations. Notwithstanding any other provision
of the Plan, any Award which is granted to a Covered Employee and is intended to constitute Qualified Performance-Based Compensation shall be subject to any additional limitations set forth in Section 162(m) of the Code (including any amendment
to Section 162(m) of the Code) or any regulations or rulings issued thereunder that are requirements for qualification as qualified performance-based compensation as described in Section 162(m)(4)(C) of the Code, and the Plan shall be
deemed amended to the extent necessary to conform to such requirements. 
 ARTICLE 10 
 PROVISIONS APPLICABLE TO AWARDS 
 10.1
Stand-Alone and Tandem Awards. Awards granted pursuant to the Plan may, in the discretion of the Administrator, be granted either alone, in addition to, or in tandem with, any other Award granted pursuant to the Plan. Awards granted in
addition to or in tandem with other Awards may be granted either at the same time as or at a different time from the grant of such other Awards. 
 10.2 Award Agreement. Awards under the Plan shall be evidenced by Award Agreements that set forth the terms, conditions and limitations for each Award which may include the term of an Award, the provisions applicable in the event the
Participant’s employment or service terminates, and the Company’s authority to unilaterally or bilaterally amend, modify, suspend, cancel or rescind an Award. 
 10.3 Limits on Transfer. No right or interest of a Participant in any Award may be pledged, encumbered, or hypothecated to or in favor of any party other than the Company, a Parent, or a Subsidiary, or shall be
subject to any lien, obligation, or liability of such Participant to any other party other than the Company, a Parent, or a Subsidiary. Except as otherwise provided by the Administrator, no Award shall be assigned, transferred, or otherwise disposed
of by a Participant other than by will or the laws of descent and distribution. The Administrator by express provision in the Award or an amendment thereto may permit an Award (other than an Incentive Stock Option) to be transferred to, exercised by
and paid to certain persons or entities related to the Participant, including but not limited to members of the Participant’s family, charitable institutions, or trusts or other entities whose beneficiaries or beneficial owners are members of
the Participant’s family and/or charitable institutions, or to such other persons or entities as may be expressly approved by the Administrator, pursuant to such conditions and procedures as the Administrator may establish. Any permitted
transfer shall be subject to the condition that the Administrator receive evidence satisfactory to it that the transfer is being made for estate and/or tax planning purposes (or to a “blind trust” in connection with the Participant’s
Termination of Service with the Company, a Parent, or a Subsidiary to assume a position with a governmental, charitable, educational or similar non-profit institution) and on a basis consistent with the Company’s lawful issue of securities.

  

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 10.4 Beneficiaries. Notwithstanding Section 10.3, a Participant may, in the manner determined
by the Administrator, designate a beneficiary to exercise the rights of the Participant and to receive any distribution with respect to any Award upon the Participant’s death. A beneficiary, legal guardian, legal representative, or other person
claiming any rights pursuant to the Plan is subject to all terms and conditions of the Plan and any Award Agreement applicable to the Participant, except to the extent the Plan and Award Agreement otherwise provide, and to any additional
restrictions deemed necessary or appropriate by the Administrator. 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 with respect to
more than 50% of the Participant’s interest in the Award shall not be effective without the prior written consent of the Participant’s spouse. If no beneficiary has been designated or survives the Participant, payment shall be made to the
person entitled thereto pursuant to the Participant’s will or the laws of descent and distribution. Subject to the foregoing, a beneficiary designation may be changed or revoked by a Participant at any time provided the change or revocation is
filed with the Administrator. 
 10.5 Stock Certificates; Book Entry Procedures. 
 (a) Notwithstanding anything herein to the contrary, the Company shall not be required to issue or deliver any certificates evidencing shares of Stock
pursuant to the exercise of any Award, unless and until the Board has determined, with advice of counsel, that the issuance and delivery of such certificates is in compliance with all applicable laws, regulations of governmental authorities and, if
applicable, the requirements of any exchange on which the shares of Stock are listed or traded. All Stock certificates delivered pursuant to the Plan are subject to any stop-transfer orders and other restrictions as the Administrator deems necessary
or advisable to comply with federal, state, or foreign jurisdiction, securities or other laws, rules and regulations and the rules of any national securities exchange or automated quotation system on which the Stock is listed, quoted, or traded. The
Administrator may place legends on any Stock certificate to reference restrictions applicable to the Stock. In addition to the terms and conditions provided herein, the Board may require that a Participant make such reasonable covenants, agreements,
and representations as the Board, in its discretion, deems advisable in order to comply with any such laws, regulations, or requirements. The Administrator shall have the right to require any Participant to comply with any timing or other
restrictions with respect to the settlement or exercise of any Award, including a window-period limitation, as may be imposed in the discretion of the Administrator. 
 (b) Notwithstanding any other provision of the Plan, unless otherwise determined by the Administrator or required by any applicable law, rule or regulation, the Company shall not deliver to any Participant
certificates evidencing shares of Stock issued in connection with any Award and instead such shares of Stock shall be recorded in the books of the Company (or, as applicable, its transfer agent or stock plan administrator). 
 10.6 Paperless Administration. In the event that the Company establishes for itself or using the services of a third part, an automated system for
the documentation, granting or exercise of Awards, such as a system using an internet website or interactive voice response, then the paperless documentation, granting or exercise of Awards by a Participant may be permitted through the use of such
an automated system. 
  

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 ARTICLE 11 
 CHANGES IN CAPITAL STRUCTURE 
 11.1 Adjustments. 
 (a) In the event of any stock dividend, stock split, combination or exchange of shares, merger, consolidation, distribution of Company assets to
stockholders (other than normal cash dividends), or any other corporate event affecting the Stock or the share price of the Stock other than an Equity Restructuring, the Administrator may make such proportionate adjustments, if any, as the
Administrator in its discretion may deem appropriate to reflect such changes with respect to (i) the aggregate number and type of shares that may be issued under the Plan (including, but not limited to, adjustments of the limitations in
Sections 3.1 and 3.3); (ii) the terms and conditions of any outstanding Awards (including, without limitation, any applicable performance targets or criteria with respect thereto); and (iii) the grant or exercise price per share for any
outstanding Awards under the Plan. Any adjustment affecting an Award intended as Qualified Performance-Based Compensation shall be made consistent with the requirements of Section 162(m) of the Code. 
 (b) In the event of any transaction or event described in Section 11.1(a) 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 in Control), or of changes in applicable laws, regulations or accounting principles, the Administrator, in
its sole discretion and on such terms and conditions as it deems appropriate, either by amendment of the terms of any outstanding Awards or by action taken prior to the occurrence of such transaction or event, is hereby authorized to take any one or
more of the following actions whenever the Administrator determines that 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
Award under the Plan, to facilitate such transactions or events or to give effect to such changes in laws, regulations or principles: 
 (i)
To provide for either (A) termination of any such Award in exchange for an amount of cash and/or other property, if any, equal to the amount that would have been received upon the exercise of such Award or realization of the Participant’s
rights (and, for the avoidance of doubt, if as of the date of the occurrence of the transaction or event described in this Section 11.1(b) the Administrator determines in good faith that no amount would have been attained upon the exercise of
such Award or realization of the Participant’s rights, then such Award may be terminated by the Company without payment) or (B) the replacement of such Award with other rights or property selected by the Administrator in its sole
discretion; 
 (ii) To provide that such Award be assumed by the successor or survivor corporation, or a parent or subsidiary thereof, or
shall be substituted for by similar options, rights or awards 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; and

 (iii) To make adjustments in the number and type of shares of Stock (or other securities or property) subject to outstanding Awards, and
in the number and kind of outstanding Restricted Stock or Restricted Stock Unit Awards and/or in the terms and conditions of (including the grant or exercise price), and the criteria included in, outstanding options, rights and awards and options,
rights and awards which may be granted in the future; 
  

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 (iv) To provide that such Award shall be exercisable or payable or fully vested with respect to all
shares covered thereby, notwithstanding anything to the contrary in the Plan or the applicable Award Agreement; and 
 (v) To provide that
the Award cannot vest, be exercised or become payable after such event. 
 (c) In connection with the occurrence of any Equity Restructuring,
and notwithstanding anything to the contrary in Sections 11.1(a) and 11.1(b): 
 (i) The number and type of securities subject to each
outstanding Award and the exercise price or grant price thereof, if applicable, will be proportionately adjusted. The adjustments provided under this Section 11.1(c)(i) shall be nondiscretionary and shall be final and binding on the affected
Holder and the Company. 
 (ii) The Administrator shall make such proportionate adjustments, if any, as the Administrator in its discretion
may deem appropriate to reflect such Equity Restructuring with respect to the aggregate number and kind of shares that may be issued under the Plan (including, but not limited to, adjustments of the limitations in Section 3.1 and the Award
Limit). 
 11.2 Acceleration Upon a Change in Control. Notwithstanding Section 11.1, and except as may otherwise be provided in
any applicable Award Agreement or other written agreement entered into between the Company, a Parent, a Subsidiary, or other Company affiliate and a Participant, if a Change in Control occurs and a Participant’s Awards are not continued,
converted, assumed, or replaced by (i) the Company or a Parent or Subsidiary of the Company, or (ii) a Successor Entity, then immediately prior to the Change in Control such Awards shall become fully exercisable and/or payable, as
applicable, and all forfeiture, repurchase and other restrictions on such Awards shall lapse. Upon, or in anticipation of, a Change in Control, the Administrator may cause any and all Awards outstanding hereunder to terminate at a specific time in
the future, including but not limited to the date of such Change in Control, and shall give each Participant the right to exercise such Awards during a period of time as the Administrator, in its sole and absolute discretion, shall determine.

 11.3 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 of Stock subject to an Award or the grant or exercise price of any Award. 
 11.4 Restrictions on Exercise. In the event of any pending stock dividend, stock split, combination or exchange of shares, merger, consolidation or other distribution (other than normal cash dividends) of
Company assets to stockholders, or any other change affecting the shares of Stock or the share price of the Stock including any Equity Restructuring, for reasons of administrative convenience, the Company in its sole discretion may refuse to permit
the exercise of any Award during a period of 30 days prior to the consummation of any such transaction. 
  

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 ARTICLE 12 
 ADMINISTRATION 
 12.1 Administrator. Unless and until the Board delegates administration of
the Plan to a Committee as set forth below, the Plan shall be administered by the full Board. The term “Administrator” as used in this Plan shall apply to any person or persons who at the time have the authority to administer the Plan. If
administration is delegated to a Committee, the Committee shall have, in connection with the administration of the Plan, the powers theretofore possessed by the Board, including the power to delegate to a subcommittee any of the administrative
powers the Committee is authorized to exercise, subject, however, to such resolutions, not inconsistent with the provisions of the Plan, as may be adopted from time to time by the Board. Notwithstanding the foregoing, however, from and after the
Public Trading Date, a Committee of the Board shall administer the Plan and such committee shall consist solely of two or more members of the Board each of whom is a Non-Employee Director, and with respect to awards that are intended to be
Performance-Based Awards, an “outside director” within the meaning of Section 162(m) of the Code; provided that any action taken by the Committee shall be valid and effective, whether or not members of the Committee at the time
of such action are later determined not to have satisfied the requirements for membership set forth in this Section 12.1 or otherwise provided in any charter of the Committee. Notwithstanding the foregoing: (a) the full Board, acting by a
majority of its members in office, shall conduct the general administration of the Plan with respect to all Awards granted to Independent Directors and for purposes of such Awards the term “Administrator” as used in this Plan shall be
deemed to refer to the Board and (b) the Board or the Committee may delegate its authority hereunder to the extent permitted by Section 12.5. In addition, in its sole discretion, the Board may at any time and from time to time exercise any
and all rights and duties of the Committee under the Plan except with respect to matters which, following the Public Trading Date, are required to be determined in the sole discretion of the Committee under Rule 16b-3 of the Exchange Act or
Section 162(m) of the Code, or any regulations or rules issued thereunder. Except as may otherwise be provided in any charter of the Committee, appointment of Committee members shall be effective upon acceptance of appointment; Committee
members may resign at any time by delivering written notice to the Board; and vacancies in the Committee may only be filled by the Board. 
 12.2 Action by the Administrator. Unless otherwise established by the Board or in any charter of the Company or the Committee, a majority of the Administrator shall constitute a quorum and the acts of a majority of the members
present at any meeting at which a quorum is present, and 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 of any Parent or Subsidiary, the Company’s independent certified public accountants, or any executive compensation
consultant or other professional retained by the Company or any Parent or Subsidiary to assist in the administration of the Plan. 
 12.3
Authority of Administrator. Subject to any specific designation in the Plan, the Administrator has the exclusive power, authority and discretion to: 
 (a) Designate Participants to receive Awards; 
 (b) Determine the type or types of Awards to be granted to
each Participant; 
 (c) Determine the number of Awards to be granted and the number of shares of Stock to which an Award will relate;

  

 18 

 (d) Determine the terms and conditions of any Award granted pursuant to the Plan, including, but not
limited to, the exercise price, grant price, or purchase price, any reload provision, any restrictions or limitations on the Award, any schedule for lapse of forfeiture restrictions or restrictions on the exercisability of an Award, and
accelerations or waivers thereof, any provisions related to non-competition and recapture of gain on an Award, based in each case on such considerations as the Committee in its sole discretion determines; provided, however, that the
Administrator shall not have the authority to accelerate the vesting or waive the forfeiture of any Performance-Based Awards; 
 (e)
Determine whether, to what extent, and pursuant to what circumstances an Award may be settled in, or the exercise price of an Award may be paid in, cash, Stock, other Awards, or other property, or an Award may be canceled, forfeited, or surrendered;

 (f) Prescribe the form of each Award Agreement, which need not be identical for each Participant; 
 (g) Decide all other matters that must be determined in connection with an Award; 
 (h) Establish, adopt, or revise any rules and regulations as it may deem necessary or advisable to administer the Plan; 
 (i) Interpret the terms of, and any matter arising pursuant to, the Plan or any Award Agreement; and 
 (j) Make all other decisions and determinations that may be required pursuant to the Plan or as the Committee deems necessary or advisable to administer
the Plan. 
 12.4 Decisions Binding. The Administrator’s interpretation of the Plan, any Awards granted pursuant to the Plan, any
Award Agreement and all decisions and determinations by the Committee with respect to the Plan are final, binding, and conclusive on all parties. 
 12.5 Delegation of Authority. To the extent permitted by applicable law, the Board or the Committee may from time to time delegate to a committee of one or more members of the Board or one or more officers of the Company the
authority to grant or amend Awards to Participants other than (a) Employees who are subject to Section 16 of the Exchange Act, (b) Covered Employees, or (c) officers of the Company (or Directors) to whom authority to grant or
amend Awards has been delegated hereunder. Any delegation hereunder shall be subject to the restrictions and limits that the Board or the Committee specifies at the time of such delegation, and the Board or the Committee may at any time rescind the
authority so delegated or appoint a new delegatee. At all times, the delegatee appointed under this Section 12.5 shall serve in such capacity at the pleasure of the Board or the Committee. 
 12.6 Amendment or Exchange of Awards. The Administrator may (i) amend any Award to reduce the per share exercise price of such an Award below
the per share exercise price as of the date the Award is granted and (ii) grant an Award in exchange for, or in connection with, the cancellation or surrender of an Award having a higher per share exercise price. 
  

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 ARTICLE 13 
 EFFECTIVE AND EXPIRATION DATE 
 13.1 Effective Date. The Plan is effective as of the day prior
to the Public Trading Date (the “Effective Date”). 
 13.2 Expiration Date. The Plan will expire on, and no
Award may be granted pursuant to the Plan after, the tenth anniversary of the date this Plan is approved by the Board (the “Expiration Date”). Any Awards that are outstanding on the Expiration Date shall remain in force
according to the terms of the Plan and the applicable Award Agreement. 
 13.3 Approval of Plan by Stockholders. The Plan will be
submitted for the approval of the Company’s stockholders within twelve (12) months after the date of the Board’s initial adoption of the Plan. Awards may be granted or awarded prior to such stockholder approval; provided that such
Awards shall not be exercisable nor shall such Awards vest prior to the time when the Plan is approved by the stockholders; and, provided further, that if such approval has not been obtained at the end of said twelve-month period, all Awards
previously granted or awarded under the Plan shall thereupon be canceled and become null and void. In addition, if the Board determines that Awards other than Options and Stock Appreciation Rights which may be granted to Covered Employees should
continue to be eligible to qualify as performance-based compensation under Section 162(m)(4)(C) of the Code, the Performance Criteria must be disclosed to and approved by the Company’s stockholders no later than the first stockholder
meeting that occurs in the fifth year following the year in which the Company’s stockholders previously approved by the Plan. 
 ARTICLE 14 
 AMENDMENT, MODIFICATION, AND TERMINATION 
 14.1 Amendment, Modification, And Termination. With the approval of the Board, at any time and from time to time, the Board may terminate, amend
or modify the Plan; provided, however, that (a) to the extent necessary and desirable to comply with any applicable law, regulation, or stock exchange rule, the Company shall obtain stockholder approval of any Plan amendment in such a
manner and to such a degree as required, and (b) stockholder approval shall be required for any amendment to the Plan that increases the number of shares of Stock available under the Plan. 
 14.2 Awards Previously Granted. No termination, amendment, or modification of the Plan shall adversely affect in any material way any Award
previously granted pursuant to the Plan without the prior written consent of the Participant. 
 ARTICLE 15 
 GENERAL PROVISIONS 
 15.1 No Rights
to Awards. No Eligible Individual or other person shall have any claim to be granted any Award pursuant to the Plan, and neither the Company nor the Administrator is obligated to treat Eligible Individuals, Participants or any other persons
uniformly. 
 15.2 No Stockholders Rights. Except as otherwise provided herein, a Participant shall have none of the rights of a
stockholder with respect to shares of Stock covered by any Award until the Participant becomes the record owner of such shares of Stock. 
  

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 15.3 Withholding. The Company or any Parent or Subsidiary shall have the authority and the right
to deduct or withhold, or require a Participant to remit to the Company, an amount sufficient to satisfy federal, state, local and foreign taxes (including the Participant’s employment tax obligations) required by law to be withheld with
respect to any taxable event concerning a Participant arising as a result of this Plan. The Administrator may in its discretion and in satisfaction of the foregoing requirement allow a Participant to elect to have the Company or any Parent or
Subsidiary, as applicable, withhold shares of Stock otherwise issuable under an Award (or allow the return of shares of Stock) having a Fair Market Value equal to the sums required to be withheld. Notwithstanding any other provision of the Plan, the
number of shares of Stock which may be withheld with respect to the issuance, vesting, exercise or payment of any Award (or which may be repurchased from the Participant of such Award within six months (or such other period as may be determined by
the Administrator) after such shares of Stock were acquired by the Participant from the Company) in order to satisfy the Participant’s federal, state, local and foreign income and payroll tax liabilities with respect to the issuance, vesting,
exercise or payment of the Award shall be limited to the number of shares of Stock which have a Fair Market Value on the date of withholding or repurchase equal to the aggregate amount of such liabilities based on the minimum statutory withholding
rates for federal, state, local and foreign income tax and payroll tax purposes that are applicable to such supplemental taxable income. 
 15.4 No Right to Employment or Services. Nothing in the Plan or any Award Agreement shall interfere with or limit in any way the right of the Company or any Parent or Subsidiary to terminate any Participant’s employment or
services at any time, nor confer upon any Participant any right to continue in the employ or service of the Company or any Parent or Subsidiary. 
 15.5 Unfunded Status of Awards. The Plan is intended to be an “unfunded” plan for incentive compensation. With respect to any payments not yet made to a Participant pursuant to an Award, nothing contained in the Plan or any
Award Agreement shall give the Participant any rights that are greater than those of a general creditor of the Company or any Parent or Subsidiary. 
 15.6 Indemnification. To the extent allowable pursuant to applicable law, each member of the Administrator or of the Board shall be indemnified and held harmless by the Company from any loss, cost, liability, or expense that may be
imposed upon or reasonably incurred by such member in connection with or resulting from any claim, action, suit, or proceeding to which he or she may be a party or in which he or she may be involved by reason of any action or failure to act pursuant
to the Plan and against and from any and all amounts paid by him or her in satisfaction of judgment in such action, suit, or proceeding against him or her; provided he or she gives the Company an opportunity, at its own expense, to handle and
defend the same before he or she undertakes to handle and defend it on his or her own behalf. The foregoing right of indemnification shall not be exclusive of any other rights of indemnification to which such persons may be entitled pursuant to the
Company’s Certificate of Incorporation or Bylaws, as a matter of law, or otherwise, or any power that the Company may have to indemnify them or hold them harmless. 
 15.7 Relationship to other Benefits. No payment pursuant to the Plan shall be taken into account in determining any benefits pursuant to any pension, retirement, savings, profit sharing, group insurance,
welfare or other benefit plan of the Company or any Parent or Subsidiary except to the extent otherwise expressly provided in writing in such other plan or an agreement thereunder. 
 15.8 Expenses. The expenses of administering the Plan shall be borne by the Company and its Subsidiaries. 
 15.9 Titles and Headings. The titles and headings of the Sections in the Plan are for convenience of reference only and, in the event of any
conflict, the text of the Plan, rather than such titles or headings, shall control. 
  

 21 

 15.10 Fractional Shares. No fractional shares of Stock shall be issued and the Administrator shall
determine, in its discretion, whether cash shall be given in lieu of fractional shares of Stock or whether such fractional shares of Stock shall be eliminated by rounding up or down as appropriate. 
 15.11 Limitations Applicable to Section 16 Persons. Notwithstanding any other provision of the Plan, the Plan, and any Award granted or
awarded to any Participant who is then subject to Section 16 of the Exchange Act, shall be subject to any additional limitations set forth in any applicable exemptive rule under Section 16 of the Exchange Act (including any amendment to
Rule 16b-3 of the Exchange Act) that are requirements for the application of such exemptive rule. To the extent permitted by applicable law, the Plan and Awards granted or awarded hereunder shall be deemed amended to the extent necessary to conform
to such applicable exemptive rule. 
 15.12 Government and Other Regulations. The obligation of the Company to make payment of awards
in Stock or otherwise shall be subject to all applicable laws, rules, and regulations, and to such approvals by government agencies as may be required. The Company shall be under no obligation to register pursuant to the Securities Act any of the
shares of Stock paid pursuant to the Plan. If the shares of Stock paid pursuant to the Plan may in certain circumstances be exempt from registration pursuant to the Securities Act, the Company may restrict the transfer of such shares of Stock in
such manner as it deems advisable to ensure the availability of any such exemption. 
 15.13 Section 409A. To the extent that the
Administrator determines that any Award granted under the Plan is subject to Section 409A of the Code, the Award Agreement evidencing such Award shall incorporate the terms and conditions required by Section 409A of the Code. To the extent
applicable, the Plan and Award Agreements shall be interpreted in accordance with Section 409A of the Code and Department of Treasury regulations and other interpretive guidance issued thereunder, including without limitation any such
regulations or other guidance that may be issued after the adoption of the Plan. Notwithstanding any provision of the Plan to the contrary, in the event that following the adoption of the Plan the Administrator determines that any Award may be
subject to Section 409A of the Code and related Department of Treasury guidance (including such Department of Treasury guidance as may be issued after the adoption of the Plan), the Administrator may adopt such amendments to the Plan and the
applicable Award Agreement or adopt other policies and procedures (including amendments, policies and procedures with retroactive effect), or take any other actions, that the Administrator determines are necessary or appropriate to (a) exempt
the Award from Section 409A of the Code and/or preserve the intended tax treatment of the benefits provided with respect to the Award, or (b) comply with the requirements of Section 409A of the Code and related Department of Treasury
guidance. 
 15.14 Governing Law. The Plan and all Award Agreements shall be construed in accordance with and governed by the laws of
the State of California, without regard to the conflicts of law principles thereof. 
  

 22 

 CHEMOCENTRYX, INC. 
 2008 INCENTIVE AWARD PLAN 
 APPENDIX 
 FOR UNITED KINGDOM 
 1. Application. This Appendix shall apply in
relation to Awards granted to Participants residing and providing services in the United Kingdom. 
 2. Definitions. Definitions as
set out in Article 2 of the Plan are applicable to this Appendix. 
 3. Taxes/Withholding. In the Committee’s discretion, each
Participant may be liable for any employer’s United Kingdom National Insurance Contributions in respect of the grant, exercise, release or assignment of any Award or the acquisition, sale or other disposition of any shares of Stock issued upon
exercise of an Award and the Company may require, as a condition of grant, exercise or settlement of an Award, that any liability it or any Subsidiary has to account for United Kingdom income tax and employer or employee National Insurance
Contributions or any other federal, state or local tax withholding obligation relating to the exercise of an Award or acquisition of shares of Stock under an Award granted pursuant to this Plan (“Tax Liability”) be satisfied
by any of the following means (in addition to the Company’s or any Subsidiary’s right to withhold from any compensation paid or payable to the Participant an amount sufficient to satisfy such Tax Liability) or by a combination of such
means: (i) the Participant’s tender of a cash payment in an amount sufficient to satisfy such Tax Liability; (ii) the Participant’s authorization of the Company or any Subsidiary to withhold shares of Stock from the shares of
Stock otherwise issuable to the Participant as a result of the exercise of the Award or acquisition of shares of Stock under the Award having a Fair Market Value equal to an amount sufficient to satisfy such Tax Liability; provided,
however, that no shares of Stock will be withheld with a value exceeding the minimum amount of tax required to be withheld by law; or (iii) the Participant’s delivery of owned and unencumbered shares of Stock having a Fair Market
Value equal to an amount sufficient to satisfy such Tax Liability. 
 4. Governing Law. The Plan shall be governed by and construed in
accordance with the laws of the State of California, without regard to the conflicts of law principles thereof, but mandatory provisions of United Kingdom law may be applied. 
  

 23 

 CHEMOCENTRYX, INC. 
 2008 EQUITY INCENTIVE AWARD PLAN 
 STOCK OPTION GRANT NOTICE AND 
 STOCK OPTION AGREEMENT 
 STOCK OPTION
GRANT NOTICE 
 ChemoCentryx, Inc., a Delaware corporation (the “Company”), pursuant to its 2008 Equity Incentive
Award Plan (the “Plan”), hereby grants to the holder listed below (“Participant”), an option to purchase the number of shares of the Company’s common stock, par value $0.001
(“Stock”), set forth below (the “Option”). This Option is subject to all of the terms and conditions set forth herein and in the Stock Option Agreement attached hereto as Exhibit A (the
“Stock Option Agreement”) and the Plan, which are incorporated herein by reference. Unless otherwise defined herein, the terms defined in the Plan shall have the same defined meanings in this Grant Notice and the Stock Option
Agreement. 
  

					
	Participant:	  		  	
		  	 	  	
	Grant Date:	  		  	
		  	 	  	
	Exercise Price per Share:	  	$	  	
		  	 	  	
	Total Exercise Price:	  	$	  	
		  	 	  	
	 Total Number of Shares
 Subject to the Option:
	  	shares	  	
		  	 	  	
	Expiration Date:	  		  	
		  	 	  	

 Type of
Option:                     ̈    Incentive Stock Option                     ̈    Non-Qualified Stock Option 
 Vesting
Schedule:                [To be specified in individual agreements] 
 By his or her signature, the Participant agrees to be bound by the terms and conditions of the Plan, the Stock Option Agreement and this Grant Notice. The Participant has reviewed the Stock Option Agreement, the Plan
and this Grant Notice in their entirety, has had an opportunity to obtain the advice of counsel prior to executing this Grant Notice and fully understands all provisions of this Grant Notice, the Stock Option Agreement and the Plan. Participant
hereby agrees to accept as binding, conclusive and final all decisions or interpretations of the Administrator upon any questions arising under the Plan or relating to the Option. 
  

									
	CHEMOCENTRYX, INC.	 		 	PARTICIPANT
					
	 By:
	 	 	 		 	 By:
	 	 
	Print Name:	 	 	 		 	Print Name:	 	 
	Title:	 	 	 		 		 	
	Address:	 	 	 		 	Address:	 	 

  

 EXHIBIT A 
 TO STOCK OPTION GRANT NOTICE 
 STOCK OPTION AGREEMENT 
 Pursuant to the Stock Option Grant Notice (the “Grant Notice”) to which this Stock Option Agreement (this
“Agreement”) is attached, ChemoCentryx, Inc., a Delaware corporation (the “Company”), has granted to the Participant an Option under the Company’s 2008 Equity Incentive Award Plan (the
“Plan”) to purchase the number of shares of Stock indicated in the Grant Notice. 
 ARTICLE I 
 GENERAL 
 1.1 Defined Terms.
Wherever the following terms are used in this Agreement they shall have the meanings specified below, unless the context clearly indicates otherwise. Capitalized terms not specifically defined herein shall have the meanings specified in the Plan and
the Grant Notice. 
 1.2 Incorporation of Terms of Plan. The Option is subject to the terms and conditions of the Plan which are
incorporated herein by reference. In the event of any inconsistency between the Plan and this Agreement, the terms of the Plan shall control. 
 ARTICLE II 
 GRANT OF OPTION 
 2.1 Grant of Option. In consideration of the Participant’s past and/or continued employment with or service to the Company or a Parent or Subsidiary and for other good and valuable consideration, effective
as of the Grant Date set forth in the Grant Notice (the “Grant Date”), the Company irrevocably grants to the Participant the Option to purchase any part or all of an aggregate of the number of shares of Stock set forth in the
Grant Notice, upon the terms and conditions set forth in the Plan, the Grant Notice and this Agreement. Unless designated as a Non-Qualified Stock Option in the Grant Notice, the Option shall be an Incentive Stock Option to the maximum extent
permitted by law. 
 2.2 Exercise Price. The exercise price of the shares of Stock subject to the Option shall be as set forth in the
Grant Notice, without commission or other charge; provided, however, that the price per share of the shares of Stock subject to the Option shall not be less than 100% of the Fair Market Value of a share of Stock on the Grant Date.
Notwithstanding the foregoing, if this Option is designated as an Incentive Stock Option and the Participant owns (within the meaning of Section 424(d) of the Code) more than 10% of the total combined voting power of all classes of stock of the
Company or any “subsidiary corporation” of the Company or any “parent corporation” of the Company (each within the meaning of Section 424 of the Code), the price per share of the shares of Stock subject to the Option shall
not be less than 110% of the Fair Market Value of a share of Stock on the Grant Date. 
 2.3 Consideration to the Company. In
consideration of the grant of the Option by the Company, the Participant agrees to render faithful and efficient services to the Company or any Parent or Subsidiary. Nothing in the Plan, the Grant Notice, or this Agreement shall confer upon the
Participant any right to continue in the employ or service of the Company or any Parent or Subsidiary or shall interfere with or restrict in any way the rights of the Company and any Parent or Subsidiary, which rights are hereby expressly reserved,
to discharge or terminate the services of the Participant at any time for any reason whatsoever, with or without cause, except to the extent expressly provided otherwise in a written agreement between the Company or a Parent or Subsidiary and the
Participant. 
  

 A-1 

 ARTICLE III 
 PERIOD OF EXERCISABILITY 
 3.1 Commencement of Exercisability. 
 (a) Subject to Sections 3.2, 3.3, 5.8 and 5.10, the Option shall become vested and exercisable in such amounts and at such times as are set forth in the
Grant Notice. 
 (b) No portion of the Option which has not become vested and exercisable at the date of the Participant’s Termination
of Service shall thereafter become vested and exercisable, except as may be otherwise provided by the Administrator or as set forth in a written agreement between the Company and the Participant. 
 3.2 Duration of Exercisability. The installments provided for in the vesting schedule set forth in the Grant Notice are cumulative. Each such
installment which becomes vested and exercisable pursuant to the vesting schedule set forth in the Grant Notice shall remain vested and exercisable until it becomes unexercisable under Section 3.3. 
 3.3 Expiration of Option. The Option may not be exercised to any extent by anyone after the first to occur of the following events: 
 (a) The expiration of ten years from the Grant Date; 
 (b) If this Option is designated as an Incentive Stock Option and the Participant owned (within the meaning of Section 424(d) of the Code), at the time the Option was granted, more than 10% of the total combined voting power of all
classes of stock of the Company or any “subsidiary corporation” of the Company or any “parent corporation” of the Company (each within the meaning of Section 424 of the Code), the expiration of five years from the Grant
Date; 
 (c) The expiration of three months from the date of the Participant’s Termination of Service, unless such termination occurs by
reason of the Participant’s death, Disability or Misconduct; 
 (d) The expiration of one year from the date of the Participant’s
Termination of Service by reason of the Participant’s death or Disability; or 
 (e) The date of Participant’s Termination of
Service as a result of Participant’s Misconduct. 
 The Participant acknowledges that an Incentive Stock Option exercised more that
three months after the Participant’s Termination of Employment, other than by reason of death or Disability, will be taxed as a Non-Qualified Stock Option. 
 3.4 Special Tax Consequences. The Participant acknowledges that, to the extent that the aggregate Fair Market Value (determined as of the time the Option is granted) of all shares of Stock with respect to which
Incentive Stock Options, including the Option, are exercisable for the first time by the Participant in any calendar year exceeds $100,000, the Option and such other options shall be Non-Qualified Stock Options to the extent necessary to comply with
the limitations imposed by Section 422(d) of the Code. The Participant further acknowledges that the rule set forth in the preceding sentence shall be applied by taking the Option and other “incentive stock options” into account in
the order in which they were granted, as determined under Section 422(d) of the Code and the Treasury Regulations thereunder. 
  

 A-2 

 ARTICLE IV 
 EXERCISE OF OPTION 
 4.1 Person Eligible to Exercise. Except as provided in
Section 5.2(b), during the lifetime of the Participant, only the Participant may exercise the Option or any portion thereof. After the death of the Participant, any exercisable portion of the Option may, prior to the time when the Option
becomes unexercisable under Section 3.3, be exercised by the Participant’s personal representative or by any person empowered to do so under the deceased Participant’s will or under the then applicable laws of descent and
distribution. 
 4.2 Partial Exercise. Any exercisable portion of the Option or the entire Option, if then wholly exercisable, may be
exercised in whole or in part at any time prior to the time when the Option or portion thereof becomes unexercisable under Section 3.3. 
 4.3 Manner of Exercise. The Option, or any exercisable portion thereof, may be exercised solely by delivery to the Secretary of the Company (or any third party administrator or other person or entity designated by the Company) of all
of the following prior to the time when the Option or such portion thereof becomes unexercisable under Section 3.3: 
 (a) An exercise
notice in a form specified by the Administrator, stating that the Option or portion thereof is thereby exercised, such notice complying with all applicable rules established by the Administrator; 
 (b) The receipt by the Company of full payment for the shares of Stock with respect to which the Option or portion thereof is exercised, including payment
of any applicable withholding tax, which may be in one or more of the forms of consideration permitted under Section 4.4; 
 (c) Any
other written representations as may be required in the Administrator’s reasonable discretion to evidence compliance with the Securities Act or any other applicable law, rule, or regulation; and 
 (d) In the event the Option or portion thereof shall be exercised pursuant to Section 4.1 by any person or persons other than the Participant,
appropriate proof of the right of such person or persons to exercise the Option. 
 Notwithstanding any of the foregoing, the Company shall have the right to
specify all conditions of the manner of exercise, which conditions may vary by country and which may be subject to change from time to time. 
 4.4 Method of Payment. Payment of the exercise price shall be by any of the following, or a combination thereof, at the election of the Participant, subject to Section 15.3 of the Plan: 
 (a) Cash; 
 (b) Check; 
  

 A-3 

 (c) Delivery of a notice that the Participant has placed a market sell order with a broker with respect
to shares of Stock then issuable upon exercise of the Option, and that the broker has been directed to pay a sufficient portion of the net proceeds of the sale to the Company in satisfaction of the aggregate exercise price; provided, that
payment of such proceeds is then made to the Company upon settlement of such sale; 
 (d) With the consent of the Administrator, by delivery
of a full recourse promissory note on such terms and conditions as may be approved by the Administrator; 
 (e) With the consent of the
Administrator, surrender of other shares of Stock which (A) in the case of shares of Stock acquired from the Company, have been owned by the Participant for more than six (6) months on the date of surrender, and (B) have a Fair Market
Value on the date of surrender equal to the aggregate exercise price of the shares of Stock with respect to which the Option or portion thereof is being exercised; 
 (f) With the consent of the Administrator, surrendered shares of Stock issuable upon the exercise of the Option having a Fair Market Value on the date of exercise equal to the aggregate exercise price of the shares of
Stock with respect to which the Option or portion thereof is being exercised; or 
 (g) With the consent of the Administrator, property of any
kind which constitutes good and valuable consideration. 
 4.5 Conditions to Issuance of Stock Certificates. The shares of Stock
deliverable upon the exercise of the Option, or any portion thereof, may be either previously authorized but unissued shares of Stock or issued shares of Stock which have then been reacquired by the Company. Such shares of Stock shall be fully paid
and nonassessable. The Company shall not be required to issue or deliver any shares of Stock purchased upon the exercise of the Option or portion thereof prior to fulfillment of all of the following conditions: 
 (a) The admission of such shares of Stock to listing on all stock exchanges on which such Stock is then listed; 
 (b) The completion of any registration or other qualification of such shares of Stock under any state or federal law or under rulings or regulations of
the Securities and Exchange Commission or of any other governmental regulatory body, which 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 which the Administrator shall, in its absolute
discretion, determine to be necessary or advisable; 
 (d) The receipt by the Company of full payment for such shares of Stock, including
payment of any applicable withholding tax, which may be in one or more of the forms of consideration permitted under Section 4.4, subject to Section 15.3 of the Plan; and 
 (e) The lapse of such reasonable period of time following the exercise of the Option as the Administrator may from time to time establish for reasons of
administrative convenience. 
  

 A-4 

 4.6 Rights as Stockholder. The holder of the Option shall not be, nor have any of the rights or
privileges of, a stockholder of the Company in respect of any shares of Stock purchasable upon the exercise of any part of the Option unless and until such shares of Stock shall have been issued by the Company to such holder (as evidenced by the
appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company). No adjustment will be made for a dividend or other right for which the record date is prior to the date the shares of Stock are issued, except as
provided in Article 11 of the Plan. 
 ARTICLE V 
 OTHER PROVISIONS 
 5.1 Administration. The Administrator shall have the power to interpret the
Plan, the Grant Notice and this Agreement and to adopt such rules for the administration, interpretation and application of the Plan as are consistent therewith and to interpret, amend or revoke any such rules. All actions taken and all
interpretations and determinations made by the Administrator in good faith shall be final and binding upon Participant, the Company and all other interested persons. No member of the Administrator or the Board shall be personally liable for any
action, determination or interpretation made in good faith with respect to the Plan, the Grant Notice, this Agreement or the Option. 
 5.2
Option Generally Not Transferable. 
 (a) Subject to Section 5.2(c), the Option may not be sold, pledged, assigned or transferred
in any manner other than by will or the laws of descent and distribution, unless and until the shares of Stock underlying the Option have been issued, and all restrictions applicable to such shares of Stock have lapsed. Neither the Option nor any
interest or right therein shall be liable for the debts, contracts or engagements of Participant or his or her successors in interest or shall be subject to disposition by transfer, alienation, anticipation, pledge, encumbrance, assignment or any
other means whether such disposition be voluntary or involuntary or by operation of law by judgment, levy, attachment, garnishment or any other legal or equitable proceedings (including bankruptcy), and any attempted disposition thereof shall be
null and void and of no effect, except to the extent that such disposition is permitted by the preceding sentence. 
 (b) Unless transferred
to a permitted transferee in accordance with Section 5.2(c), during the lifetime of Participant, only Participant may exercise the Option or any portion thereof. After the death of Participant, any exercisable portion of the Option may, prior
to the time when the Option becomes unexercisable under Section 3.3, be exercised by Participant’s personal representative or by any person empowered to do so under the deceased Participant’s will or under the then applicable laws of
descent and distribution. 
 (c) Notwithstanding any other provision in this Agreement, with the consent of the Administrator and to the
extent the Option is designated as a Non-Qualified Stock Option, the Option may be transferred to, exercised by and paid to one or more permitted transferees, subject to the terms and conditions set forth in Section 10.3 of the Plan. Subject to
such conditions and procedures as the Administrator may require, a permitted transferee may exercise the Option or any portion thereof during the Participant’s lifetime. 
 5.3 Adjustments. The Participant acknowledges that the Option is subject to modification and termination in certain events as provided in this
Agreement and Article 11 of the Plan. 
  

 A-5 

 5.4 Notices. Any notice to be given under the terms of this Agreement to the Company shall be
addressed to the Company in care of the Secretary of the Company at the address given beneath the signature of the Company’s authorized officer on the Grant Notice, and any notice to be given to Participant shall be addressed to Participant at
the address given beneath Participant’s signature on the Grant Notice. By a notice given pursuant to this Section 5.4, either party may hereafter designate a different address for notices to be given to that party. Any notice which is
required to be given to Participant shall, if Participant is then deceased, be given to the person entitled to exercise his or her Option pursuant to Section 4.1 by written notice under this Section 5.4. Any notice shall be deemed duly
given when sent via email or when sent by certified mail (return receipt requested) and deposited (with postage prepaid) in a post office or branch post office regularly maintained by the United States Postal Service. 
 5.5 Titles. Titles are provided herein for convenience only and are not to serve as a basis for interpretation or construction of this Agreement.

 5.6 Governing Law; Severability. The laws of the State of California shall govern the interpretation, validity, administration,
enforcement and performance of the terms of this Agreement regardless of the law that might be applied under principles of conflicts of laws. 
 5.7 Conformity to Securities Laws. The Participant acknowledges that the Plan, the Grant Notice and this Agreement are intended to conform to the extent necessary with all provisions of the Securities Act and the Exchange Act and any
and all regulations and rules promulgated by the Securities and Exchange Commission thereunder, and state securities laws and regulations. Notwithstanding anything herein to the contrary, the Plan shall be administered, and the Option is granted and
may be exercised, only in such a manner as to conform to such laws, rules and regulations. To the extent permitted by applicable law, the Plan, the Grant Notice and this Agreement shall be deemed amended to the extent necessary to conform to such
laws, rules and regulations. 
 5.8 Amendments, Suspension and Termination. To the extent permitted by the Plan, this Agreement may be
wholly or partially amended or otherwise modified, suspended or terminated at any time or from time to time by the Administrator, provided, that, except as may otherwise be provided by the Plan, no amendment, modification, suspension or
termination of this Agreement shall adversely effect the Option in any material way without the prior written consent of the Participant. 
 5.9 Successors and Assigns. The Company may assign any of its rights under this Agreement to single or multiple assignees, and this Agreement shall inure to the benefit of the successors and assigns of the Company. Subject to the
restrictions on transfer herein set forth in Section 5.2, this Agreement shall be binding upon Participant and his or her heirs, executors, administrators, successors and assigns. 
 5.10 Notification of Disposition. If this Option is designated as an Incentive Stock Option, Participant shall give prompt notice to the Company
of any disposition or other transfer of any shares of Stock acquired under this Agreement if such disposition or transfer is made (a) within two years from the Grant Date with respect to such shares of Stock or (b) within one year after
the transfer of such shares of Stock to the Participant. 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 Participant in
such disposition or other transfer. 
 5.11 Limitations Applicable to Section 16 Persons. Notwithstanding any other provision of
the Plan or this Agreement, if Participant is subject to Section 16 of the Exchange Act, the Plan, the 

  

 A-6 

 
Option and this Agreement shall be subject to any additional limitations set forth in any applicable exemptive rule under Section 16 of the Exchange Act
(including any amendment to Rule 16b-3 of the Exchange Act) that are requirements for the application of such exemptive rule. To the extent permitted by applicable law, this Agreement shall be deemed amended to the extent necessary to conform to
such applicable exemptive rule. 
 5.12 Not a Contract of Employment. Nothing in this Agreement, the Grant Notice, or the Plan shall
confer upon the Participant any right to continue to serve as an employee or other service provider of the Company or any Parent or Subsidiary. 
 5.13 Entire Agreement. The Plan, the Grant Notice and this Agreement (including all exhibits thereto) constitute the entire agreement of the parties and supersede in their entirety all prior undertakings and agreements of the Company
and Participant with respect to the subject matter hereof. 
  

 A-72008 Employee Stock Purchase Plan

 Exhibit 10.4 
 CHEMOCENTRYX, INC. 
 2008 EMPLOYEE STOCK PURCHASE PLAN 
 ARTICLE I 
 PURPOSE 

The purposes of this ChemoCentryx, Inc. 2008 Employee Stock Purchase Plan (the “Plan”) are to assist Eligible Employees of
ChemoCentryx, Inc., a Delaware corporation (the “Company”), and its 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 Subsidiaries. 
 All share numbers set forth in this Plan give effect to the reverse stock split implemented by the Company in connection with its initial public
offering. 
 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. 
 2.1
“Administrator” means the entity that conducts the general administration of the Plan as provided herein. The term “Administrator” shall refer to the Committee unless the Board has assumed the
authority for administration of the Plan generally as provided in Article 3. 
 2.2 “Board” shall mean the Board of
Directors of the Company. 
 2.3 “Change in Control” means and includes each of the following: 
 (a) A transaction or series of transactions (other than an offering of Stock to the general public through a registration statement filed with the
Securities and Exchange Commission) 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 Section 2.3(a) or Section 2.3(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 Section 2.4(c)(ii) as beneficially owning 50% or more of 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 discretion, to determine conclusively whether a Change in Control of the Company has occurred pursuant to the above definition, and the date of the occurrence of such Change in Control and any incidental matters relating thereto. 
 2.4 “Code” shall mean the Internal Revenue Code of 1986, as amended from time to time, and the regulations issued thereunder.

 2.5 “Committee” means the committee of the Board described in Article 3. 
 2.6 “Company” shall mean ChemoCentryx, Inc., a Delaware corporation. 
 2.7 “Compensation” of an Eligible Employee shall mean the gross base compensation received by such Eligible Employee as
compensation for services to the Company or any Designated Subsidiary, excluding overtime payments, sales commissions, incentive compensation, bonuses, expense reimbursements, fringe benefits and other special payments. 
 2.8 “Designated Subsidiary” shall mean any Subsidiary designated by the Administrator in accordance with Section 3.3(ii).

 2.9 “Eligible Employee” shall mean an Employee of the Company or a Designated Subsidiary: (i) 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 Stock or other stock of the Company, a Parent or a Subsidiary
(as determined under Section 423(b)(3) of the Code); (ii) whose customary employment is for more than twenty hours per week; (iii) whose customary employment is for more than five months in any calendar year; and (iv) who has
been continuously employed by the Company or a Designated Subsidiary for at least three months; provided, however, that the Administrator may provide in an Offering Document that (x) Employees who are highly compensated employees
within the meaning of Section 423(b)(4)(D) of the Code, and/or (y) Employees who have 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), shall not be eligible to 

  

 2 

 
participate in an Offering Period. For purposes of clause (i) above, 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 which an Employee may purchase under outstanding options shall be treated as stock owned by the Employee. 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 a Designated Subsidiary and meeting the requirements of Treasury Regulation Section 1.421-7(h)(2).

 2.10 “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. 
 2.11 “Enrollment Date” shall mean the first day of each
Offering Period. 
 2.12 “Exchange Act” shall mean the Securities Exchange Act of 1934, as amended from time to time.

 2.13 “Fair Market Value” means, as of any given date, the fair market value of a share of Stock on the date
determined by such methods or procedures as may be established from time to time by the Administrator. Unless otherwise determined by the Administrator, the Fair Market Value of a share of Stock as of any given date shall be (a) if Stock is
traded on any established stock exchange, the closing price of a share of Stock as reported in the Wall Street Journal (or such other source as the Administrator may deem reliable for such purposes) for such date, or if no sale occurred on
such date, the first trading day immediately prior to such date during which a sale occurred; or (b) if Stock is not traded on an exchange but is quoted on a national market or other quotation system, the last sales price on such date, or if no
sales occurred on such date, then on the date immediately prior to such date on which sales price are reported. 
 2.14 “Offering
Document” shall have the meaning given to such term in Section 5.1. 
 2.15 “Offering Period” shall
mean each Offering Period designated by the Administrator in the applicable Offering Document pursuant to Section 5.1. 
 2.16
“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. 
 2.17
“Participant” means any Eligible Employee who has executed a participation agreement and been granted rights to purchase Stock pursuant to the Plan. 
 2.18 “Plan” shall mean this ChemoCentryx, Inc. 2008 Employee Stock Purchase Plan, as it may be amended from time to time.

 2.19 “Purchase Date” shall mean the last Trading Day of each Offering Period. 
  

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 2.20 “Purchase Price” shall mean 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 of Stock on the Enrollment 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 of Stock on
the Enrollment Date or on the Purchase Date, whichever is lower); provided, further, that the Purchase Price may be adjusted by the Administrator pursuant to Article 9; provided, further, that the Purchase Price shall not
be less than the par value of a share of Stock. 
 2.21 “Securities Act” shall mean the Securities Act of 1933, as
amended from time to time. 
 2.22 “Stock” means the common stock of the Company and such other securities of the
Company that may be substituted for Stock pursuant to Article 9. 
 2.23 “Subsidiary” shall mean 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. 
 2.24 “Trading
Day” shall mean any day on which the Stock is actually traded. 
 ARTICLE III 
 ADMINISTRATION 
 3.1
Administrator. 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”), which Committee shall consist solely of two or more members of the Board each of whom is a “non-employee director” within the meaning of Rule 16b-3 which has been adopted by the Securities and Exchange
Commission under the Exchange Act and which Committee is otherwise constituted to comply with applicable law. Appointment of Committee members shall be effective upon acceptance of appointment. The Board may abolish the Committee at any time and
revest in the Board the administration of the Plan. Committee members may resign at any time by delivering written notice to the Board. Vacancies in the Committee may only be filled by the Board. 
 3.2 Action by 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. 
 3.3 Authority of Administrator. The Administrator shall have the power, subject to, and within the limitations of, the express provisions of the Plan: 
  

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 (i) To determine when and how rights to purchase stock of the Company shall be granted and the
provisions of each offering of such rights (which need not be identical). 
 (ii) 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. 
 (iii) 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. 
 (iv) To amend the Plan as
provided in Article 10. 
 (v) 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. 
 3.4 Decisions Binding. The Administrator’s interpretation of the Plan, any rights granted pursuant to the Plan, any participation agreement
and all decisions and determinations by the Administrator with respect to the Plan are final, binding, and conclusive on all parties. 
 ARTICLE IV 
 SHARES SUBJECT TO THE PLAN 
 4.1 Number of Shares. Subject to Article 9, the aggregate number of shares of Stock which may be issued pursuant to rights granted under the Plan shall be 350,000 shares. In addition to the foregoing, subject
to Article 9, commencing on January 1, 2009, and on each January 1 thereafter during the term of the Plan, the number of shares of Stock which shall be made available for sale under the Plan shall be increased by that number of shares of
Stock equal to the least of (a) 1% of the Company’s outstanding shares on such date, (b) 250,000 shares, or (c) a lesser amount determined by the Board. Accordingly, the number of shares of Stock which shall be available for sale
under the Plan shall be subject to increase under the preceding sentence only on January 1, 2009 and on each subsequent January 1 through and including January 1, 2017. If any right granted under the Plan shall for any reason
terminate without having been exercised, the Stock not purchased under such right shall again become available for the Plan. Notwithstanding anything in this Section 4.1 to the contrary, the number of shares of Stock that may be issued or
transferred pursuant to rights granted under the Plan shall not exceed an aggregate of 2,600,000 shares, subject to Article 9. 
 4.2
Stock Distributed. Any Stock distributed pursuant to the Plan may consist, in whole or in part, of authorized and unissued Stock, treasury stock or Stock purchased on the open market. 
  

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 ARTICLE V 
 OFFERING PERIODS; OFFERING DOCUMENTS; PURCHASE DATES 
 5.1 Offering Periods. The Administrator
may from time to time grant or provide for the grant of rights to purchase Stock of the Company under the Plan to Eligible Employees during one or more periods (each, an “Offering Period”) selected by the Administrator
commencing on such dates (each, an “Enrollment Date”) 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 dates during an Offering Period (the “Purchase Date(s)”) on which rights granted under the Plan shall be exercised and
purchases of Stock 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. 
 5.2 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): 
 (i) the length of the Offering Period, which period shall not exceed twenty-seven months; 
 (ii) the Enrollment Date for such Offering Period; 
 (iii) the Purchase Date(s) during such Offering Period; 
 (iv) the maximum number of shares that may be
purchased by any Eligible Employee during such Offering Period; 
 (v) in connection with each Offering Period that contains more than one
Purchase Date, the maximum aggregate number of shares which may be purchased by any Eligible Employee on any given Purchase Date during the Offering Period; and 
 (vi) such other provisions as the Administrator determines are appropriate, subject to the Plan. 
 ARTICLE
VI 
 PARTICIPATION 
 6.1 Eligibility. Any Eligible Employee who shall be employed by the Company or a Designated Subsidiary on the day immediately preceding 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 6 and the limitations imposed by Section 423(b) of the Code. 
 6.2 Enrollment in Plan. Except as otherwise set forth in an Offering Document, an Eligible Employee may become a Participant in the Plan for an Offering Period by delivering a participation agreement to the Company prior to the
Enrollment Date for such Offering Period (or such other date specified in the Offering Document), in such form as the Administrator provides. Each such agreement shall designate a whole percentage of such Eligible Employee’s Compensation to be
withheld by the 

  

 6 

 
Company or the Designated Subsidiary employing such Eligible Employee on each payday during the Offering Period as payroll deductions under the Plan. An
Eligible Employee may designate any whole percentage of Compensation which is not less than 1% and not more than the maximum percentage specified by the Administrator in the applicable Offering Document (which percentage shall be 20% in the absence
of any such designation) as payroll deductions. The payroll deductions 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. A Participant may
change the percentage of Compensation designated in his or her participation agreement, subject to the limits of this Section 6.2, or may suspend his or her payroll deductions, or may resume payroll deductions pursuant to a new participation
agreement, 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 during each Offering Period in the applicable
Offering Document. Any such change, suspension or resumption of payroll deductions shall be effective with the first full payroll period following five business days after the Company’s receipt of the new participation 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, such Participant’s cumulative payroll deductions prior to the suspension
shall remain in his or her account and shall not be paid to such Participant unless he or she withdraws from participation in the Plan pursuant to Article 8. Except as otherwise set forth in an Offering Document, 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. 
 6.3 Payroll
Deductions. Except as otherwise provided in the applicable Offering Document, 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 such authorization is applicable, unless sooner terminated by the Participant as provided in Article 9. 
 6.4 Effect of
Enrollment. A Participant’s completion of a participation 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 participation
agreement, withdraws from participation under the Plan as provided in Article 8 or otherwise becomes ineligible to participate in the Plan. 
 6.5 Limitation on Purchase of 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 which exceeds $25,000 of fair
market value of such stock (determined as of the first day of the Offering Period during 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. 
 6.6 Decrease of Payroll Deductions. Notwithstanding the foregoing, to the extent necessary to
comply with Section 423(b)(8) of the Code and Section 6.5, a Participant’s payroll deductions may be suspended by the Administrator at any time during an Offering Period. 
 ARTICLE VII 
 GRANT AND EXERCISE OF RIGHTS 
 7.1 Grant of Rights. On the Enrollment Date of each Offering Period, each Eligible Employee participating in such Offering Period shall be granted
a right to purchase the maximum number 

  

 7 

 
of shares of Stock specified under Section 5.2(iv) and shall have the right to buy, on each Purchase Date during such Offering Period (at the applicable
Purchase Price), such number of shares of the Company’s Stock as is determined by dividing (a) such Participant’s payroll deductions accumulated prior to such Purchase Date and retained in the Participant’s account as of the
Purchase Date, by (b) the applicable Purchase Price. The right shall expire on the last day of the Offering Period. 
 7.2 Exercise
of Rights. On each Purchase Date, each Participant’s accumulated payroll deductions and any other additional payments specifically provided for in the applicable Offering Document will be applied to the purchase of whole shares of Stock of
the Company, 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. The amount, if any, of accumulated payroll deductions remaining in each Participant’s account after the purchase of shares on each Purchase Date shall be distributed in full to the
Participant after such Purchase Date. 
 7.3 Pro Rata Allocation of Shares. If the Administrator determines that, on a given Purchase
Date, the number of shares of Stock with respect to which rights are to be exercised may exceed (i) the number of shares of Stock that were available for issuance under the Plan on the Enrollment Date of the applicable Offering Period, or
(ii) the number of shares of Stock 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 of Stock 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 Stock are to be exercised
pursuant to this Article 7 on such Purchase Date, and shall either (x) continue all Offering Periods then in effect, or (y) terminate any or all Offering Periods then in effect pursuant to Article 10. 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 which has not been applied to the purchase of shares of stock shall be paid to such Participant in one lump sum in cash as soon as reasonably
practicable after the Purchase Date. 
 7.4 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 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, which arise upon the
exercise of the right or the disposition of the 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 Stock by the Participant. 
 7.5 Conditions to Issuance of Stock. The Company shall not be required to issue or deliver any certificate or certificates for shares of Stock 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
Stock is then listed; and 
 (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, which the Administrator shall, in its absolute discretion, deem necessary or advisable; and 
  

 8 

 (c) The obtaining of any approval or other clearance from any state or federal governmental agency which
the Administrator shall, in its absolute discretion, determine to be necessary or advisable; and 
 (d) The payment to the Company of all
amounts which 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 VIII 
 WITHDRAWAL; TERMINATION OF EMPLOYMENT OR ELIGIBILITY 
 8.1 Withdrawal. A Participant may withdraw all but not less than all of the payroll deductions 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 Administrator. All of the Participant’s payroll deductions credited to his or her account during the 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 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 delivers to the Company a new participation
agreement. 
 8.2 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 which may hereafter be adopted by the Company or a Designated Subsidiary or in subsequent Offering Periods which commence after the termination of the Offering Period from which the Participant
withdraws. 
 8.3 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 8 and the payroll deductions credited to such Participant’s account 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 13.4, as soon as reasonably practicable and such Participant’s rights for the Offering Period shall be automatically terminated. 
  

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 ARTICLE IX 
 ADJUSTMENTS UPON CHANGES IN STOCK 
 9.1 Changes in Capitalization. Subject to
Section 9.3, in the event of any stock dividend, stock split, combination or exchange of shares, merger, consolidation, spin-off, recapitalization, distribution of Company assets to stockholders (other than normal cash dividends), or any other
corporate event affecting the Stock or the share price of the Stock, the Administrator may make such proportionate adjustments, if any, as the Administrator in its discretion may deem appropriate to reflect such change with respect to (i) the
aggregate number and type of shares of Stock (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 5.2 on the maximum number of shares of Stock that may be purchased); (ii) the class(es) and number of shares and price per share of Stock subject to outstanding rights; and (iii) the Purchase Price with
respect to any outstanding rights. 
 9.2 Other Adjustments. Subject to Section 9.3, in the event of any transaction or event
described in Section 9.1 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 in
Control), or of changes in applicable laws, regulations or accounting principles, and 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, the Administrator, in its sole discretion and
on such terms and conditions as it deems appropriate, is hereby authorized to take any one or more of the following actions: 
 (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 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; and 
 (d) To make adjustments in the
number and type of shares of Stock (or other securities or property) subject to outstanding rights under the Plan and/or in the terms and conditions of outstanding rights and rights which may be granted in the future; 
 (d) To provide that Participants’ accumulated payroll deductions may be used to purchase 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) terminated; and 
 (e) To provide that all outstanding rights shall terminate without being exercised. 
 9.3 No Adjustment Under Certain
Circumstances. No adjustment or action described in this Article 9 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. 
  

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 9.4 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 of Stock subject to an Award or the grant or exercise price of any Award. 
 ARTICLE X 
 AMENDMENT, MODIFICATION AND TERMINATION 
 10.1 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 by a vote of the holders of the outstanding shares of the Company’s capital stock entitled to vote shall be required to amend the Plan to: (a) change the aggregate number of shares that may be sold
pursuant to rights under the Plan under Section 4.1 (other than any adjustment as provided by Article 9); (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. 
 10.2 Rights Previously Granted. Except as provided in Article 9 or this Article 10, no termination, amendment or modification may make any change in any right theretofore granted which adversely affects the
rights of any Participant without the consent of such Participant, provided that an Offering Period may be terminated, amended or modified by the Administrator if the Administrator determines that the termination of the Offering Period or the
Plan is in the best interests of the Company and its stockholders. 
 10.3 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 the Offering Periods, limit the frequency
and/or number of changes in the amount withheld 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 properly completed withholding elections, establish reasonable waiting and adjustment periods and/or accounting and crediting procedures to ensure that amounts
applied toward the purchase of 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
advisable which are consistent with the Plan. 
 ARTICLE XI 
 TERM OF PLAN 
 The Plan shall be effective on the date prior to the date on
which the Registration Statement filed with respect to the Plan becomes effective (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 this Plan is approved by the Board. No right may be granted under the Plan prior to such stockholder approval. The Plan shall be in effect until the tenth anniversary of the date this Plan is approved by the Board, unless
sooner terminated under Article 10. 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 XII 
 MISCELLANEOUS 
 12.1 Restriction upon Assignment. A right granted under the Plan shall
not be transferable other than by will or the 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. 
 12.2 Rights as a Stockholder. With respect to shares of Stock 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. 
 12.3 Interest. No interest shall accrue on the
payroll deductions or lump sum 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 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. 
  

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 12.6 Equal Rights and Privileges. All Eligible Employees of the Company or any Designated
Subsidiary 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. 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 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. 
 12.8 Reports. Statements of account shall be given to
participating Employees at least annually, which statements shall set forth the amounts of payroll deductions, 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 Parent or Subsidiary or to 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 of stock purchased upon exercise of a right under the Plan if such disposition or transfer is made: (a) within two years from the Enrollment 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 validity and enforceability of
this Plan shall be governed by and construed in accordance with the laws of the State of California without regard to otherwise governing principles of conflicts of law. 
  

 13

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