Document:

Prepared by R.R. Donnelley Financial -- EX-4.1

 Exhibit 4.1 
  

 
 DE L AWA RE SEAL VIROBAY, INC. CORPORATE May 18, 2006 Fully paid and nonassessable shares of common stock,
$0.001 par value, OF ViroBay, Inc. transferable on the books of the Corporation in person or by duly authorized attorney upon surrender of this Certificate properly endorsed. This Certificate is not valid until countersigned by the Transfer Agent
and registered by the Registrar. Witness the facsimile seal of the Corporation and the facsimile signatures of its duly authorized officers. Dated: This certifies that is the record holder of Incorporat ed under the law s of the stat e of delawar e
CUSIP 92823J 100 SEE REVERSE FOR CERTAIN DEFINITIONS Countersigned and Registered: American Stock transfer & trust company, LLC (New York, NY) Transfer Agent and Registrar By: Authorized signat ure PRESIDENT & Chief Executive Officer Chief
Financial & Accounting Officer VB ViroBay 

 

 
 The Corporation shall furnish without charge to each stockholder who so requests a statement of the powers, designations, preferences
and relative, participating, optional or other special rights of each class of stock of the Corporation or series thereof and the qualifications, limitations or restrictions of such preferences and/or rights. Such requests shall be made to the
Corporation’s Secretary at the principal office of the Corporation. The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable
laws or regulations: Additional abbreviations may also be used though not in the above list. TEN COM – as tenants in common TEN ENT – as tenants by the entireties JT TEN – as joint tenants with right of survivorship and not as tenants
in common COM PROP – as community property UNIF GIFT MIN ACT –Custodian (Cust) (Minor) under Uniform Gifts to Minors Act (State) UNIF TRF MIN ACT –Custodian (until age) (Cust) under Uniform Transfers (Minor) to Minors Act (State) FOR
VALUE RECEIVED, hereby sell(s), assign(s) and transfer(s) unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE shares of the capital stock represented by within Certificate, and do hereby irrevocably constitute and appoint
attorney-in-fact to transfer the said stock on the books of the within named Corporation with full power of the substitution in the premises. Dated NOTICE: THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF
THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATSOEVER. By THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION, (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS
WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM), PURSUANT TO S.E.C. RULE 17Ad-15. GUARANTEES BY A NOTARY PUBLIC ARE NOT ACCEPTABLE. SIGNATURE GUARANTEES MUST NOT BE DATED. Signature(s) Guaranteed: (PLEASE PRINT OR TYPEWRITE
NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE) X XPrepared by R.R. Donnelley Financial -- EX-10.2

 Exhibit 10.2 

VIROBAY, INC. 

2006 EQUITY INCENTIVE PLAN 

ADOPTED BY THE BOARD: AUGUST 25, 2006 

APPROVED BY THE STOCKHOLDERS: AUGUST 26, 2006 

AMENDED BY THE BOARD: DECEMBER 19, 2007 

APPROVED BY THE STOCKHOLDERS: AUGUST 14, 2008 

AMENDED BY THE BOARD: NOVEMBER 20, 2009 

APPROVED BY THE STOCKHOLDERS: DECEMBER 10, 2009 

AMENDED AND RATIFIED BY THE BOARD:
DECEMBER 11, 2012 
 APPROVED BY THE STOCKHOLDERS:
MARCH 6, 2013 
 AMENDED BY THE BOARD:
MARCH 12, 2014 
 APPROVED BY THE STOCKHOLDERS:
APRIL 2, 2014 
 AMENDED BY THE BOARD:
JUNE 20, 2014 
 APPROVED BY THE STOCKHOLDERS:
JULY 7, 2014 
 AMENDED BY THE BOARD:
SEPTEMBER 12, 2014 
 APPROVED BY THE STOCKHOLDERS:
OCTOBER 1, 2014 
 TERMINATION DATE: AUGUST 24, 2016 

 

	1.	GENERAL. 

 (a) Eligible Stock Award Recipients. The persons
eligible to receive Stock Awards are Employees, Directors, and Consultants. 
 (b) Available Stock Awards. The Plan provides
for the grant of the following Stock Awards: (i) Incentive Stock Options, (ii) Nonstatutory Stock Options, (iii) Restricted Stock Awards, and (iv) Stock Appreciation Rights. 

(c) Purpose. The Company, by means of the Plan, seeks to secure and retain the services of the group of persons eligible to receive
Stock Awards as set forth in Section 1(a), to provide incentives for such persons to exert maximum efforts for the success of the Company and any Affiliate, and to provide a means by which such eligible recipients may be given an opportunity to
benefit from increases in value of the Common Stock through the granting of Stock Awards. 
  

	2.	DEFINITIONS. 

 As used in the Plan, the following definitions shall apply
to the capitalized terms indicated below: 
 (a) “Affiliate” means, at the time of
determination, any “parent” or “subsidiary” of the Company as such terms are defined in Rule 405 of the Securities Act. The Board shall have the authority to determine the time or times at which “parent” or
“subsidiary” status is determined within the foregoing definition. 
 (b) “Board”
means the Board of Directors of the Company. 

 (c) “Capitalization Adjustment” has the meaning ascribed to that
term in Section 10(a). 
 (d) “Change in Control” means the occurrence, in a
single transaction or in a series of related transactions, of any one or more of the following events:  
 (i) any
Exchange Act Person becomes the Owner, directly or indirectly, of securities of the Company representing more than fifty percent (50%) of the combined voting power of the Company’s then outstanding securities other than by virtue of a
merger, consolidation or similar transaction. Notwithstanding the foregoing, a Change in Control shall not be deemed to occur (A) on account of the acquisition of securities of the Company by an investor, any affiliate thereof or any other
Exchange Act Person that acquires the Company’s securities in a transaction or series of related transactions the primary purpose of which is to obtain financing for the Company through the issuance of equity securities or (B) solely
because the level of Ownership held by any Exchange Act Person (the “Subject Person”) exceeds the designated percentage threshold of the outstanding voting securities as a result of a repurchase or other acquisition of voting
securities by the Company reducing the number of shares outstanding, provided that if a Change in Control would occur (but for the operation of this sentence) as a result of the acquisition of voting securities by the Company, and after such share
acquisition, the Subject Person becomes the Owner of any additional voting securities that, assuming the repurchase or other acquisition had not occurred, increases the percentage of the then outstanding voting securities Owned by the Subject Person
over the designated percentage threshold, then a Change in Control shall be deemed to occur; 
 (ii) there is consummated a merger,
consolidation or similar transaction involving (directly or indirectly) the Company and, immediately after the consummation of such merger, consolidation or similar transaction, the stockholders of the Company immediately prior thereto do not Own,
directly or indirectly, either (A) outstanding voting securities representing more than fifty percent (50%) of the combined outstanding voting power of the surviving Entity in such merger, consolidation or similar transaction or
(B) more than fifty percent (50%) of the combined outstanding voting power of the parent of the surviving Entity in such merger, consolidation or similar transaction, in each case in substantially the same proportions as their Ownership of
the outstanding voting securities of the Company immediately prior to such transaction; 
 (iii) the stockholders of the Company
approve or the Board approves a plan of complete dissolution or liquidation of the Company, or a complete dissolution or liquidation of the Company shall otherwise occur; or 

(iv) there is consummated a sale, lease, exclusive license or other disposition of all or substantially all of the consolidated assets
of the Company and its Subsidiaries, other than a sale, lease, license or other disposition of all or substantially all of the consolidated assets of the Company and its Subsidiaries to an Entity, more than fifty percent (50%) of the combined
voting power of the voting securities of which are Owned by stockholders of the Company in substantially the same proportions as their Ownership of the outstanding voting securities of the Company immediately prior to such sale, lease, license or
other disposition. 

 The term Change in Control shall not include a sale of assets, merger or other transaction
effected exclusively for the purpose of changing the domicile of the Company. 
 Notwithstanding the foregoing or any other provision of this Plan,
the definition of Change in Control (or any analogous term) in an individual written agreement between the Company or any Affiliate and the Participant shall supersede the foregoing definition with respect to Stock Awards subject to such agreement;
provided, however, that if no definition of Change in Control or any analogous term is set forth in such an individual written agreement, the foregoing definition shall apply. 

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

(f) “Committee” means a committee of one or more Directors to whom authority has
been delegated by the Board in accordance with Section 3(c). 
 (g) “Common Stock” means
the common stock of the Company. 
 (h) “Company” means Virobay, Inc., a Delaware corporation. 

(i) “Consultant” means any person, including an advisor, who is (i) engaged by the Company or an Affiliate
to render consulting or advisory services and is compensated for such services, or (ii) serving as a member of the Board of Directors of an Affiliate and is compensated for such services. However, service solely as a Director, or payment of a
fee for such service, shall not cause a Director to be considered a “Consultant” for purposes of the Plan.  

(j) “Continuous Service” means that the Participant’s service with the Company
or an Affiliate, whether as an Employee, Director or Consultant, is not interrupted or terminated. A change in the capacity in which the Participant renders service to the Company or an Affiliate as an Employee, Consultant or Director or a change in
the entity for which the Participant renders such service, provided that there is no interruption or termination of the Participant’s service with the Company or an Affiliate, shall not terminate a Participant’s Continuous Service;
provided, however, if the corporation for which a Participant is rendering service ceases to qualify as an Affiliate, as determined by the Board in its sole discretion, such Participant’s Continuous Service
shall be considered to have terminated on the date such corporation ceases to qualify as an Affiliate. For example, a change in status from an employee of the Company to a consultant of an Affiliate or to a Director shall not constitute an
interruption of Continuous Service. To the extent permitted by law, the Board or the chief executive officer of the Company, in that party’s sole discretion, may determine whether Continuous Service shall be considered interrupted in the case
of any leave of absence approved by that party, including sick leave, military leave or any other personal leave. Notwithstanding the foregoing, a leave of absence shall be treated as Continuous Service for purposes of vesting in a Stock Award only
to such extent as may be provided in the Company’s leave of absence policy or in the written terms of the Participant’s leave of absence. 

(k) “Corporate Transaction” means the occurrence, in a single transaction or in a
series of related transactions, of any one or more of the following events: 

 (i) a sale or other disposition of all or substantially all, as determined by the Board in
its sole discretion, of the consolidated assets of the Company and its Subsidiaries; 
 (ii) a sale or other disposition of at least
ninety percent (90%) of the outstanding securities of the Company; 
 (iii) the consummation of a merger, consolidation or
similar transaction following which the Company is not the surviving corporation; or 
 (iv) the consummation of a merger,
consolidation or similar transaction following which the Company is the surviving corporation but the shares of Common Stock outstanding immediately preceding the merger, consolidation or similar transaction are converted or exchanged by virtue of
the merger, consolidation or similar transaction into other property, whether in the form of securities, cash or otherwise. 
 (l)
“Director” means a member of the Board. 
 (m)
“Disability” means the inability of a Participant to engage in any substantially gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in
death or which has lasted or can be expected to last for a continuous period of not less than twelve (12) months, and shall be determined by the Board on the basis of such medical evidence as the Board deems warranted under the circumstances.
 
 (n) “Employee” means any person employed by the Company or an Affiliate. However, service
solely as a Director, or payment of a fee for such services, shall not cause a Director to be considered an “Employee” for purposes of the Plan. 

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

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

(q) “Exchange Act Person” means any natural person, Entity or “group” (within the meaning of
Section 13(d) or 14(d) of the Exchange Act), except that “Exchange Act Person” shall not include (i) the Company or any Subsidiary of the Company, (ii) any employee benefit plan of the Company or any Subsidiary of the
Company or any trustee or other fiduciary holding securities under an employee benefit plan of the Company or any Subsidiary of the Company, (iii) an underwriter temporarily holding securities pursuant to an offering of such securities,
(iv) an Entity Owned, directly or indirectly, by the stockholders of the Company in substantially the same proportions as their Ownership of stock of the Company; or (v) any natural person, Entity or “group” (within the meaning
of Section 13(d) or 14(d) of the Exchange Act) that, as of the effective date of the Plan as set forth in Section 13, is the Owner, directly or indirectly, of securities of the Company representing more than fifty percent (50%) of the
combined voting power of the Company’s then outstanding securities. 

 (r) “Fair Market Value” means, as of
any date, the value of the Common Stock determined by the Board and (i) in a manner consistent with Section 260.140.50 of Title 10 of the California Code of Regulations, and (ii) in compliance with Section 409A of the Code or, in
the case of an Incentive Stock Option, in compliance with Section 422 of the Code. 
 (s)
“Incentive Stock Option” means an Option that qualifies as an incentive stock option within the meaning of Section 422 of the Code and the regulations promulgated thereunder. 

(t) “Nonstatutory Stock Option” means an Option that does not qualify as an Incentive Stock Option. 

(u) “Officer” means any person designated by the Company as an officer. 

(v) “Option” means an Incentive Stock Option or a Nonstatutory Stock Option to
purchase shares of Common Stock granted pursuant to the Plan. 
 (w) “Option
Agreement” means a written agreement between the Company and an Optionholder evidencing the terms and conditions of an Option grant. Each Option Agreement shall be subject to the terms and conditions of the Plan. 

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

(aa) “Plan” means this Virobay, Inc. 2006 Equity Incentive Plan. 

(bb) “Restricted Stock Award” means an award of shares of Common Stock, which is
granted pursuant to the terms and conditions of Section 7(a). 
 (cc) “Restricted
Stock Award Agreement” means a written agreement between the Company and a holder of a Restricted Stock Award evidencing the terms and conditions of a Restricted Stock Award. Each Restricted Stock Award Agreement shall be subject to the
terms and conditions of the Plan. 
 (dd) “Securities Act” means the Securities Act of 1933, as
amended. 
 (ee) “Stock Appreciation Right” means a right to receive the
appreciation on Common Stock, that is granted pursuant to the terms and conditions of Section 7(b). 

 (ff) “Stock Appreciation Right
Agreement” means a written agreement between the Company and a holder of a Stock Appreciation Right evidencing the terms and conditions of a Stock Appreciation Right grant. Each Stock Appreciation Right Agreement shall be subject to the
terms and conditions of the Plan. 
 (gg) “Stock Award” means any
right granted under the Plan, including an Option, a Restricted Stock Award, and a Stock Appreciation Right. 

(hh) “Stock Award Agreement” means a written agreement between the Company and a
Participant evidencing the terms and conditions of a Stock Award grant. Each Stock Award Agreement shall be subject to the terms and conditions of the Plan. 

(ii) “Subsidiary” means, with respect to the Company, (i) any corporation of
which more than fifty percent (50%) of the outstanding capital stock having ordinary voting power to elect a majority of the board of directors of such corporation (irrespective of whether, at the time, stock of any other class or classes of
such corporation shall have or might have voting power by reason of the happening of any contingency) is at the time, directly or indirectly, Owned by the Company, and (ii) any partnership in which the Company has a direct or indirect interest
(whether in the form of voting or participation in profits or capital contribution) of more than fifty percent (50%). 

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

 

	3.	ADMINISTRATION. 

 (a) Administration by Board. The Board shall
administer the Plan unless and until the Board delegates administration of the Plan to a Committee, as provided in Section 3(c). 

(b) Powers of Board. The Board shall have the power, subject to, and within the limitations of, the express provisions of the Plan:

 (i) To determine from time to time (1) which of the persons eligible under the Plan shall be granted Stock Awards;
(2) when and how each Stock Award shall be granted; (3) what type or combination of types of Stock Award shall be granted; (4) the provisions of each Stock Award granted (which need not be identical), including the time or times when
a person shall be permitted to receive cash or Common Stock pursuant to a Stock Award; and (5) the number of shares of Common Stock with respect to which a Stock Award shall be granted to each such person. 

(ii) To construe and interpret the Plan and Stock Awards granted under it, and to establish, amend and revoke rules and regulations for
its administration. The Board, in the exercise of this power, may correct any defect, omission or inconsistency in the Plan or in any Stock Award Agreement, in a manner and to the extent it shall deem necessary or expedient to make the Plan fully
effective. 

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

(iv) To effect, at any time and from time to time, with the consent of any adversely affected Participant, (1) the reduction of the
exercise price of any outstanding Option or the strike price of any outstanding Stock Appreciation Right under the Plan; (2) the cancellation of any outstanding Option or Stock Appreciation Right under the Plan and the grant in substitution
therefor of (a) a new Option or Stock Appreciation Right under the Plan or another equity plan of the Company covering the same or a different number of shares of Common Stock, (b) a Restricted Stock Award, (c) cash, and/or
(d) other valuable consideration (as determined by the Board, in its sole discretion); or (3) any other action that is treated as a repricing under generally accepted accounting principles. 

(v) To amend the Plan or a Stock Award as provided in Section 11. 

(vi) To terminate or suspend the Plan as provided in Section 12. 

(vii) Generally, to exercise such powers and to perform such acts as the Board deems necessary or expedient to promote the best
interests of the Company and that are not in conflict with the provisions of the Plan. 
 (viii) To adopt such procedures and
sub-plans as are necessary or appropriate to permit participation in the Plan by individuals who are foreign nationals or employed outside the United States. 

(c) Delegation to Committee. The Board may delegate some or all of the administration of the Plan to a Committee or Committees. 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 that have been delegated to the Committee, including the power to delegate to
a subcommittee any of the administrative powers the Committee is authorized to exercise (and references in this Plan to the Board shall thereafter be to the Committee or subcommittee), subject, however, to such resolutions, not inconsistent
with the provisions of the Plan, as may be adopted from time to time by the Board. The Board may retain the authority to concurrently administer the Plan with the Committee and may, at any time, revest in the Board some or all of the powers
previously delegated. 
 (d) Effect of Board’s Decision. All determinations, interpretations and constructions made by
the Board in good faith shall not be subject to review by any person and shall be final, binding and conclusive on all persons. 
  

	4.	SHARES SUBJECT TO THE PLAN. 

(a) Share Reserve. Subject to the provisions of Section 10(a) relating to Capitalization Adjustments, the Common Stock that may be
issued pursuant to Stock Awards shall not exceed in the aggregate five million two hundred three thousand seven hundred sixty-five (5,203,765) shares of Common Stock. 

 (b) Reversion of Shares to the Share Reserve. If any Stock Award shall for any reason
expire or otherwise terminate, in whole or in part, without having been exercised in full, or if any shares of Common Stock issued to a Participant pursuant to a Stock Award are forfeited back to or repurchased by the Company because of or in
connection with the failure to meet a contingency or condition required to vest such shares in the Participant, the shares of Common Stock not acquired, such Stock Award or the shares of Common Stock forfeited or repurchased under such Stock Award
shall revert to and again become available for issuance under the Plan; provided, however, that subject to the provisions of Section 10(a) relating to Capitalization Adjustments, the aggregate maximum number of shares of
Common Stock that may be issued as Incentive Stock Options shall be five million two hundred three thousand seven hundred sixty-five (5,203,765) shares of Common Stock. 

(c) Source of Shares. The stock issuable under the Plan shall be shares of authorized but unissued or reacquired Common Stock,
including shares repurchased by the Company on the open market. 
 (d) Share Reserve Limitation. To the extent required by
Section 260.140.45 of Title 10 of the California Code of Regulations, the total number of shares of Common Stock issuable upon exercise of all outstanding Options and the total number of shares of Common Stock provided for under any stock bonus
or similar plan of the Company shall not exceed the applicable percentage as calculated in accordance with the conditions and exclusions of Section 260.140.45 of Title 10 of the California Code of Regulations, based on the shares of Common
Stock of the Company that are outstanding at the time the calculation is made. 
  

	5.	ELIGIBILITY. 

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

(b) Ten Percent Stockholders. 

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

(ii) A Ten Percent Stockholder shall not be granted a Nonstatutory Stock Option unless the exercise price of such Option is at least
(i) one hundred ten percent (110%) of the Fair Market Value of the Common Stock on the date of grant, or (ii) such lower percentage of the Fair Market Value of the Common Stock on the date of grant as is permitted by
Section 260.140.41 of Title 10 of the California Code of Regulations at the time of the grant of the Option. 

 (iii) A Ten Percent Stockholder shall not be granted a Restricted Stock Award or Stock
Appreciation Right (if such award could be settled in shares of Common Stock), unless the purchase price of the restricted stock is at least (i) one hundred percent (100%) of the Fair Market Value of the Common Stock on the date of grant,
or (ii) such lower percentage of the Fair Market Value of the Common Stock on the date of grant as is permitted by Section 260.140.42 of Title 10 of the California Code of Regulations at the time of the grant of the award. 

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

	6.	OPTION PROVISIONS. 

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

(a) Term. Subject to the provisions of Section 5(b) regarding Ten Percent Stockholders, no Option shall be exercisable after the
expiration of ten (10) years from the date of grant. 
 (b) Exercise Price of an Incentive Stock Option. Subject to the
provisions of Section 5(b) regarding Ten Percent Stockholders, the exercise price of each Incentive Stock Option shall be not less than one hundred percent (100%) of the Fair Market Value of the Common Stock subject to the Option on the
date the Option is granted. Notwithstanding the foregoing, an Incentive Stock Option may be granted with an exercise price lower than that set forth in the preceding sentence if such Option is granted pursuant to an assumption or substitution for
another option in a manner consistent with the provisions of Section 424(a) of the Code. 
 (c) Exercise Price of a
Nonstatutory Stock Option. Subject to the provisions of Section 5(b) regarding Ten Percent Stockholders, the exercise price of each Nonstatutory Stock  

 
Option shall be not less than one hundred percent (100%) of the Fair Market Value of the Common Stock subject to the Option on the date the Option is granted. Notwithstanding the
foregoing, a Nonstatutory Stock Option may be granted with an exercise price lower than that set forth in the preceding sentence if such Option is granted pursuant to an assumption or substitution for another option in a manner consistent with the
provisions of Section 424(a) of the Code. 
 (d) Consideration. The purchase price of Common Stock acquired pursuant to
the exercise of an Option shall be paid, to the extent permitted by applicable law and as determined by the Board in its sole discretion, by any combination of the methods of payment set forth below. The Board shall have the authority to grant
Options that do not permit all of the following methods of payment (or otherwise restrict the ability to use certain methods) and to grant Options that require the consent of the Company to utilize a particular method of payment. The methods of
payment permitted by this Section 6(d) are: 
 (i) by cash or check; 

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

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

(iv) by a “net exercise” arrangement pursuant to which the Company will reduce the number of shares of Common Stock issued
upon exercise by the largest whole number of shares with a Fair Market Value that does not exceed the aggregate exercise price; provided, however, the Company shall accept a cash or other payment from the Participant to the extent of any
remaining balance of the aggregate exercise price not satisfied by such holding back of whole shares; provided, however, shares of Common Stock will no longer be outstanding under an Option and will not be exercisable thereafter to the extent
that (i) shares are used to pay the exercise price pursuant to the “net exercise,” (ii) shares are delivered to the Participant as a result of such exercise, and (iii) shares are withheld to satisfy tax withholding
obligations; 
 (v) according to a deferred payment or similar arrangement with the Optionholder; provided, however, that
interest shall compound at least annually and shall be charged at the minimum rate of interest necessary to avoid (i) the imputation of interest income to the Company and compensation income to the Optionholder under any applicable provisions
of the Code, and (ii) the classification of the Option as a liability for financial accounting purposes; or 
 (vi) in any other
form of legal consideration that may be acceptable to the Board. 

 (e) Transferability of Options. The Board may, in its sole discretion, impose such
limitations on the transferability of Options as the Board shall determine. In the absence of such a determination by the Board to the contrary, the following restrictions on the transferability of Options shall apply: 

(i) Restrictions on Transfer. An Option shall not be transferable except by will or by the laws of descent and distribution and shall be
exercisable during the lifetime of the Optionholder only by the Optionholder. 
 (ii) Domestic Relations Orders. Notwithstanding the
foregoing, an Option may be transferred pursuant to a domestic relations order; provided, however, that if an Option is an Incentive Stock Option, such Option shall be deemed to be a Nonstatutory Stock Option as a result of such transfer.

 (iii) Beneficiary Designation. Notwithstanding the foregoing, the Optionholder may, by delivering written notice to the Company, in
a form provided by or otherwise satisfactory to the Company, designate a third party who, in the event of the death of the Optionholder, shall thereafter be entitled to exercise the Option. In the absence of such a designation, the executor or
administrator of the Optionholder’s estate shall be entitled to exercise the Option. 
 (f) Vesting of Options Generally. The
total number of shares of Common Stock subject to an Option may vest and therefore become exercisable in periodic installments that may or may not be equal. The Option may be subject to such other terms and conditions on the time or times when it
may or may not be exercised (which may be based on performance or other criteria) as the Board may deem appropriate. The vesting provisions of individual Options may vary. The provisions of this Section 6(f) are subject to any Option provisions
governing the minimum number of shares of Common Stock as to which an Option may be exercised. 
 (g) Minimum Vesting.
Notwithstanding the foregoing Section 6(f), to the extent that the following restrictions on vesting are required by Section 260.140.41(f) of Title 10 of the California Code of Regulations at the time of the grant of the Option, then:

 (i) Options granted to an Employee who is not an Officer, Director or Consultant shall provide for vesting of the total number
of shares of Common Stock at a rate of at least twenty percent (20%) per year over five (5) years from the date the Option was granted, subject to reasonable conditions such as continued employment; and 

(ii) Options granted to Officers, Directors or Consultants may be made fully exercisable, subject to reasonable conditions such as
continued employment, at any time or during any period established by the Company. 
 (h) Termination of Continuous Service. In the
event that an Optionholder’s Continuous Service terminates (other than upon the Optionholder’s death or Disability), the Optionholder may exercise his or her Option (to the extent that the Optionholder was entitled to exercise such Option
as of the date of termination of Continuous Service) but only within such 

 
period of time ending on the earlier of (i) the date thirty (30) days following the termination of the Optionholder’s Continuous Service (or such longer or shorter period specified
in the Option Agreement, which period shall not be less than thirty (30) days unless such termination is for cause), or (ii) the expiration of the term of the Option as set forth in the Option Agreement. If, after termination of Continuous
Service, the Optionholder does not exercise his or her Option within the time specified herein or in the Option Agreement (as applicable), the Option shall terminate. 

(i) Extension of Termination Date. An Optionholder’s Option Agreement may also provide that if the exercise of the Option following
the termination of the Optionholder’s Continuous Service (other than upon the Optionholder’s death or Disability) would be prohibited at any time solely because the issuance of shares of Common Stock would violate the registration
requirements under the Securities Act, then the Option shall terminate on the earlier of (i) the expiration of a period of thirty (30) days after the termination of the Optionholder’s Continuous Service during which the exercise of
the Option would not be in violation of such registration requirements, or (ii) the expiration of the term of the Option as set forth in the Option Agreement. 

(j) Disability of Optionholder. In the event that an Optionholder’s Continuous Service terminates as a result of the
Optionholder’s Disability, the Optionholder may exercise his or her Option (to the extent that the Optionholder was entitled to exercise such Option as of the date of termination of Continuous Service), but only within such period of time
ending on the earlier of (i) the date twelve (12) months following such termination of Continuous Service (or such longer or shorter period specified in the Option Agreement, which period shall not be less than six (6) months), or
(ii) the expiration of the term of the Option as set forth in the Option Agreement. If, after termination of Continuous Service, the Optionholder does not exercise his or her Option within the time specified herein or in the Option Agreement
(as applicable), the Option shall terminate. 
 (k) Death of Optionholder. In the event that (i) an Optionholder’s
Continuous Service terminates as a result of the Optionholder’s death or (ii) the Optionholder dies within the period (if any) specified in the Option Agreement after the termination of the Optionholder’s Continuous Service for a
reason other than death, then the Option may be exercised (to the extent the Optionholder was entitled to exercise such Option as of the date of death) by the Optionholder’s estate, by a person who acquired the right to exercise the Option by
bequest or inheritance or by a person designated to exercise the option upon the Optionholder’s death pursuant to Section 6(e)(iii), but only within the period ending on the earlier of (i) the date eighteen (18) months following
the date of death (or such longer or shorter period specified in the Option Agreement, which period shall not be less than six (6) months), or (ii) the expiration of the term of such Option as set forth in the Option Agreement. If, after
the Optionholder’s death, the Option is not exercised within the time specified herein or in the Option Agreement (as applicable), the Option shall terminate. 

(l) Early Exercise. The Option may include a provision whereby the Optionholder may elect at any time before the Optionholder’s
Continuous Service terminates to exercise the  

 
Option as to any part or all of the shares of Common Stock subject to the Option prior to the full vesting of the Option. Subject to the “Repurchase Limitation” in
Section 9(h), any unvested shares of Common Stock so purchased may be subject to a repurchase option in favor of the Company or to any other restriction the Board determines to be appropriate. Provided that the “Repurchase Limitation”
in Section 9(h) is not violated, the Company shall not be required to exercise its repurchase option until at least six (6) months (or such longer or shorter period of time necessary to avoid a charge to earnings for financial accounting
purposes) have elapsed following exercise of the Option unless the Board otherwise specifically provides in the Option Agreement. 

(m) Right of Repurchase. Subject to the “Repurchase Limitation” in Section 9(h), the Option may include a provision
whereby the Company may elect to repurchase all or any part of the vested shares of Common Stock acquired by the Optionholder pursuant to the exercise of the Option. Provided that the “Repurchase Limitation” in Section 9(h) is not
violated, the Company shall not be required to exercise its repurchase option until at least six (6) months (or such longer or shorter period of time necessary to avoid classification of the Option as a liability for financial accounting
purposes) have elapsed following exercise of the Option unless otherwise specifically provided in the Option Agreement. 
 (n)
Right of First Refusal. The Option may include a provision whereby the Company may elect to exercise a right of first refusal following receipt of notice from the Optionholder of the intent to transfer all or any part of the shares of Common
Stock received upon the exercise of the Option. Except as expressly provided in this Section 6(n) or in the Stock Award Agreement for the Option, such right of first refusal shall otherwise comply with any applicable provisions of the Bylaws of
the Company. The Company will not exercise its right of first refusal until at least six (6) months (or such longer or shorter period of time necessary to avoid classification of the Option as a liability for financial accounting purposes) have
elapsed following exercise of the Option unless otherwise specifically provided in the Option Agreement. 
  

	7.	PROVISIONS OF STOCK AWARDS OTHER THAN OPTIONS. 

(a) Restricted Stock Awards. Each Restricted Stock Award Agreement shall be in such form and shall contain such terms and conditions as
the Board shall deem appropriate. At the Board’s election, shares of Common Stock may be (i) held in book entry form subject to the Company’s instructions until any restrictions relating to the Restricted Stock Award lapse; or
(ii) evidenced by a certificate, which certificate shall be held in such form and manner as determined by the Board. The terms and conditions of the Restricted Stock Award agreements may change from time to time, and the terms and
conditions of separate Restricted Stock Award agreements need not be identical; provided, however, that each Restricted Stock Award agreement shall include (through incorporation of the provisions hereof by reference in the agreement or
otherwise) the substance of each of the following provisions: 
 (i) Purchase Price. At the time of the grant of a Restricted Stock
Award, the Board will determine the price to be paid by the Participant for each share subject to the Restricted Stock Award. Subject to the provisions of Section 5(b) regarding Ten Percent 

 
Stockholders and to the extent required by applicable law, the price to be paid by the Participant for each share subject to the Restricted Stock Award shall not be less than eighty-five percent
(85%) of the Common Stock’s Fair Market Value on the date such award is made or at the time the purchase is consummated. Notwithstanding the foregoing, a Restricted Stock Award may be awarded as a stock bonus (i.e., with no cash
purchase price to be paid) to the extent permissible under applicable law. 
 (ii) Consideration. At the time of the grant of a
Restricted Stock Award, the Board will determine the consideration permissible for the payment of the purchase price of the Restricted Stock Award. The purchase price of Common Stock acquired pursuant to the Restricted Stock Award shall be paid
either: (i) in cash or by check at the time of purchase; (ii) at the discretion of the Board, according to a deferred payment or other similar arrangement with the Participant; (iii) by past or future services rendered to the Company
or an Affiliate; or (iv) in any other form of legal consideration that may be acceptable to the Board in its sole discretion and permissible under applicable law. 

(iii) Vesting. Subject to the “Repurchase Limitation” in Section 9(h), shares of Common Stock acquired under a Restricted
Stock Award may be subject to a share repurchase right or option in favor of the Company in accordance with a vesting schedule to be determined by the Board. 

(iv) Termination of Participant’s Continuous Service. Subject to the “Repurchase Limitation” in Section 9(h), in the
event that a Participant’s Continuous Service terminates, the Company shall have the right, but not the obligation, to repurchase or otherwise reacquire, any or all of the shares of Common Stock held by the Participant that have not vested as
of the date of termination under the terms of the Restricted Stock Award agreement. At the Board’s election, the price paid for all shares of Common Stock so repurchased or reacquired by the Company may be at the lesser of (i) the Fair
Market Value on the relevant date, or (ii) the Participant’s original cost for such shares. Provided that the “Repurchase Limitation” in Section 9(h) is not violated, the Company shall not be required to exercise its
repurchase or reacquisition option until at least six (6) months (or such longer or shorter period of time necessary to avoid classification of the Restricted Stock Award as a liability for financial accounting purposes) have elapsed following
the Participant’s purchase of the shares acquired pursuant to the Restricted Stock Award unless otherwise determined by the Board or provided in the Restricted Stock Award Agreement. 

(v) Transferability. Rights to purchase or acquire shares of Common Stock under the Restricted Stock Award agreement shall not be
transferable except by will or by the laws of descent and distribution and shall be exercisable during the lifetime of the Participant only by the Participant. 

(b) Stock Appreciation Rights. Each Stock Appreciation Right Agreement shall be in such form and shall contain such terms and
conditions as the Board shall deem appropriate. The terms and conditions of Stock Appreciation Right Agreements may change from time to time, and the terms and conditions of separate Stock Appreciation Right Agreements need not be identical;
provided, however, that but each Stock Appreciation Right Agreement shall include (through incorporation of the provisions hereof by reference in the agreement or otherwise) the substance of each of the following provisions:

 (i) Term. Subject to the provisions of Section 5(b) regarding Ten Percent
Stockholders, no Stock Appreciation Right shall be exercisable after the expiration of ten (10) years from the date of grant, or such shorter period specified in the Stock Appreciation Right Agreement. 

(ii) Strike Price. Each Stock Appreciation Right will be denominated in shares of Common Stock equivalents. Subject to the provisions of
Section 5(b) regarding Ten Percent Stockholders, the strike price of each Stock Appreciation Right granted as a stand-alone or tandem Stock Award shall not be less than one hundred percent (100%) of the Fair Market Value of the Common
Stock equivalents subject to the Stock Appreciation Right on the date of grant. 
 (iii) Calculation of Appreciation. The appreciation
distribution payable on the exercise of a Stock Appreciation Right will be not greater than an amount equal to the excess of (i) the aggregate Fair Market Value (on the date of the exercise of the Stock Appreciation Right) of a number of shares
of Common Stock equal to the number of share of Common Stock equivalents in which the Participant is vested under such Stock Appreciation Right and with respect to which the Participant is exercising the Stock Appreciation Right on such date, over
(ii) an amount (the strike price) that will be determined by the Board on the date of grant. 
 (iv) Vesting. At the time of the
grant of a Stock Appreciation Right, the Board may impose such restrictions or conditions to the vesting of such Stock Appreciation Right as it deems appropriate; provided, however, that a Stock Appreciation Right that could be settled in
shares of Common Stock shall be subject to the provision of Section 9(h). 
 (v) Exercise. To exercise any outstanding Stock
Appreciation Right, the Participant must provide written notice of exercise to the Company in compliance with the provisions of the Stock Appreciation Right Agreement evidencing such Stock Appreciation Right. 

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

(vii) Termination of Continuous Service. In the event that a Participant’s Continuous Service terminates, the Participant may
exercise his or her Stock Appreciation Right (to the extent that the Participant was entitled to exercise such Stock Appreciation Right as of the date of termination) but only within such period of time ending on the earlier of (i) the date
thirty (30) days following the termination of the Participant’s Continuous Service (or such longer or shorter period specified in the Stock Appreciation Right Agreement), or (ii) the expiration of the term of the Stock Appreciation
Right as set forth in the Stock Appreciation Right Agreement. If, after termination of Continuous Service, the Participant does not exercise his or her Stock Appreciation Right within the time specified herein or in the Stock Appreciation Right
Agreement (as applicable), the Stock Appreciation Right shall terminate. 

	8.	COVENANTS OF THE COMPANY. 

(a) Availability of Shares. During the terms of the Stock Awards, the Company shall keep available at all times the number of shares of
Common Stock required to satisfy such Stock Awards. 
 (b) Securities Law Compliance. The Company shall seek to obtain from
each regulatory commission or agency having jurisdiction over the Plan such authority as may be required to grant Stock Awards and to issue and sell shares of Common Stock upon exercise of the Stock Awards; provided, however,
that this undertaking shall not require the Company to register under the Securities Act the Plan, any Stock Award or any Common Stock issued or issuable pursuant to any such Stock Award. If, after reasonable efforts, the Company is unable to obtain
from any such regulatory commission or agency the authority that counsel for the Company deems necessary for the lawful issuance and sale of Common Stock under the Plan, the Company shall be relieved from any liability for failure to issue and sell
Common Stock upon exercise of such Stock Awards unless and until such authority is obtained. 
  

	9.	MISCELLANEOUS. 

 (a) Use of Proceeds. Proceeds from the sale of
Common Stock pursuant to Stock Awards shall constitute general funds of the Company. 
 (b) Stockholder Rights. No Participant
shall be deemed to be the holder of, or to have any of the rights of a holder with respect to, any shares of Common Stock subject to such Stock Award unless and until such Participant has satisfied all requirements for exercise of the Stock Award
pursuant to its terms. 
 (c) No Employment or other Service Rights. Nothing in the Plan, any Stock Award Agreement, or any
other instrument executed thereunder or any Stock Award granted pursuant thereto shall confer upon any Participant any right to continue to serve the Company or an Affiliate in the capacity in effect at the time the Stock Award was granted or shall
affect the right of the Company or an Affiliate to terminate (i) the employment of an Employee with or without notice and with or without cause, (ii) the service of a Consultant pursuant to the terms of such Consultant’s
agreement with the Company or an Affiliate, or (iii) the service of a Director pursuant to the Bylaws of the Company or an Affiliate, and any applicable provisions of the corporate law of the state in which the Company or the Affiliate is
incorporated, as the case may be. 
 (d) Incentive Stock Option $100,000 Limitation. To the extent that the aggregate Fair
Market Value (determined at the time of grant) of Common Stock with respect to which Incentive Stock Options are exercisable for the first time by any Optionholder during any calendar year (under all plans of the Company and any Affiliates) exceeds
one hundred thousand dollars ($100,000), the Options or portions thereof that exceed such limit (according to the order in which they were granted) shall be treated as Nonstatutory Stock Options, notwithstanding any contrary provision of the
applicable Option Agreement(s). 

 (e) Investment Assurances. The Company may require a Participant, as a condition of
exercising or acquiring Common Stock under any Stock Award, (i) to give written assurances satisfactory to the Company as to the Participant’s knowledge and experience in financial and business matters and/or to employ a purchaser
representative reasonably satisfactory to the Company who is knowledgeable and experienced in financial and business matters and that he or she is capable of evaluating, alone or together with the purchaser representative, the merits and risks of
exercising the Stock Award; and (ii) to give written assurances satisfactory to the Company stating that the Participant is acquiring Common Stock subject to the Stock Award for the Participant’s own account and not with any present
intention of selling or otherwise distributing the Common Stock. The foregoing requirements, and any assurances given pursuant to such requirements, shall be inoperative if (i) the issuance of the shares upon the exercise or acquisition of
Common Stock under the Stock Award has been registered under a then currently effective registration statement under the Securities Act, or (ii) as to any particular requirement, a determination is made by counsel for the Company that such
requirement need not be met in the circumstances under the then applicable securities laws. The Company may, upon advice of counsel to the Company, place legends on stock certificates issued under the Plan as such counsel deems necessary or
appropriate in order to comply with applicable securities laws, including, but not limited to, legends restricting the transfer of the Common Stock. 

(f) Withholding Obligations. To the extent provided by the terms of a Stock Award Agreement, the Company may, in its sole discretion,
satisfy any federal, state or local tax withholding obligation relating to a Stock Award by any of the following means (in addition to the Company’s right to withhold from any compensation paid to the Participant by the Company) or by a
combination of such means: (i) causing the Participant to tender a cash payment; (ii) withholding shares of Common Stock from the shares of Common Stock issued or otherwise issuable to the Participant in connection with the Stock Award;
provided, however, that no shares of Common Stock are withheld with a value exceeding the minimum amount of tax required to be withheld by law (or such lower amount as may be necessary to avoid classification of the Stock Award as a liability
for financial accounting purposes); or (iii) by such other method as may be set forth in the Stock Award Agreement. 
 (g)
Information Obligation. To the extent required by Section 260.140.46 of Title 10 of the California Code of Regulations, the Company shall deliver financial statements to Participants at least annually. This Section 9(g) shall not apply
to key Employees whose duties in connection with the Company assure them access to equivalent information. 
 (h) Repurchase
Limitation. The terms of any repurchase option shall be specified in the Stock Award, and the repurchase price may be either the Fair Market Value of the shares of Common Stock on the date of termination of Continuous Service or the lower of
(i) the Fair Market Value of the shares of Common Stock on the date of repurchase, or (ii) their original purchase price. To the extent required by Section 260.140.41 and Section 260.140.42 of Title 10 of the California Code of
Regulations at the time a Stock Award is made, any repurchase option contained in a Stock Award granted to a person who is not an Officer, Director or Consultant shall be upon the terms described below: 

 (i) Fair Market Value. If the repurchase option gives the Company the right to repurchase
the shares of Common Stock upon termination of Continuous Service at not less than the Fair Market Value of the shares of Common Stock to be purchased on the date of termination of Continuous Service, then (i) the right to repurchase shall be
exercised for cash or cancellation of purchase money indebtedness for the shares of Common Stock within ninety (90) days of termination of Continuous Service (or in the case of shares of Common Stock issued upon exercise of Stock Awards after
such date of termination, within ninety (90) days after the date of the exercise) or such longer period as may be agreed to by the Company and the Participant, and (ii) the right terminates when the shares of Common Stock become publicly
traded. 
 (ii) Original Purchase Price. If the repurchase option gives the Company the right to repurchase the shares of Common Stock
upon termination of Continuous Service at the lower of (i) the Fair Market Value of the shares of Common Stock on the date of repurchase or (ii) their original purchase price, then (x) the right to repurchase at the original purchase
price shall lapse at the rate of at least twenty percent (20%) of the shares of Common Stock per year over five (5) years from the date the Stock Award is granted (without respect to the date the Stock Award was exercised or became
exercisable) and (y) the right to repurchase shall be exercised for cash or cancellation of purchase money indebtedness for the shares of Common Stock within ninety (90) days of termination of Continuous Service (or in the case of shares
of Common Stock issued upon exercise of Options after such date of termination, within ninety (90) days after the date of the exercise) or such longer period as may be agreed to by the Company and the Participant. 

(i) Electronic Delivery. Any reference herein to a “written” agreement or document shall include any agreement or document
delivered electronically or posted on the Company’s intranet. 
  

	10.	ADJUSTMENTS UPON CHANGES IN COMMON STOCK; CORPORATE TRANSACTIONS. 

(a) Capitalization Adjustments. If any change is made in, or other events occur with respect to, the Common Stock subject to the Plan or
subject to any Stock Award without the receipt of consideration by the Company (through merger, consolidation, reorganization, recapitalization, reincorporation, stock dividend, dividend in property other than cash, stock split, liquidating
dividend, combination of shares, exchange of shares, change in corporate structure or other transaction not involving the receipt of consideration by the Company (each a “Capitalization Adjustment”), the Board
shall appropriately adjust: (i) the class(es) and maximum number of securities subject to the Plan pursuant to Sections 4(a) and 4(b), and (ii) the class(es) and number of securities and price per share of Common Stock subject to each
outstanding Stock Award. The Board shall make such adjustments, and its determination shall be final, binding and conclusive. (Notwithstanding the foregoing, the conversion of any convertible securities of the Company shall not be treated as a
transaction “without receipt of consideration” by the Company.) 

 (b) Dissolution or Liquidation. In the event of a dissolution or liquidation of the
Company, all outstanding Stock Awards (other than Stock Awards consisting of vested and outstanding shares of Common Stock not subject to the Company’s right of repurchase) shall terminate immediately prior to the completion of such dissolution
or liquidation, and the shares of Common Stock subject to the Company’s repurchase option may be repurchased by the Company notwithstanding the fact that the holder of such Stock Award is providing Continuous Service, provided,
however, that the Board may, in its sole discretion, cause some or all Stock Awards to become fully vested, exercisable and/or no longer subject to repurchase or forfeiture (to the extent such Stock Awards have not previously expired or
terminated) before the dissolution or liquidation is completed but contingent on its completion.  
 (c) Corporate
Transaction. The following provisions shall apply to Stock Awards in the event of a Corporate Transaction unless otherwise provided in a written agreement between the Company or any Affiliate and the holder of the Stock Award:  

(i) Stock Awards May Be Assumed. In the event of a Corporate Transaction, any surviving corporation or acquiring corporation (or the
surviving or acquiring corporation’s parent company) may assume or continue any or all Stock Awards outstanding under the Plan or may substitute similar stock awards for Stock Awards outstanding under the Plan (including but not limited to,
awards to acquire the same consideration paid to the stockholders of the Company pursuant to the Corporate Transaction), and any reacquisition or repurchase rights held by the Company in respect of Common Stock issued pursuant to Stock Awards may be
assigned by the Company to the successor of the Company (or the successor’s parent company, if any), in connection with such Corporate Transaction. A surviving corporation or acquiring corporation may choose to assume or continue only a portion
of a Stock Award or substitute a similar stock award for only a portion of a Stock Award. The terms of any assumption, continuation or substitution shall be set by the Board in accordance with the provisions of Section 3. 

(ii) Stock Awards Held by Current Participants. In the event of a Corporate Transaction in which the surviving corporation or acquiring
corporation (or its parent company) does not assume or continue such outstanding Stock Awards or substitute similar stock awards for such outstanding Stock Awards, then with respect to Stock Awards that have not been assumed, continued or
substituted and that are held by Participants whose Continuous Service has not terminated prior to the effective time of the Corporate Transaction (referred to as the “Current Participants”), the vesting of such Stock Awards
(and, if applicable, the time at which such Stock Awards may be exercised) shall (contingent upon the effectiveness of the Corporate Transaction) be accelerated in full to a date prior to the effective time of such Corporate Transaction as the Board
shall determine (or, if the Board shall not determine such a date, to the date that is five (5) days prior to the effective time of the Corporate Transaction), and such Stock Awards shall terminate if not exercised (if applicable) at or prior
to the effective time of the Corporate Transaction, and any reacquisition or repurchase rights held by the Company with respect to such Stock Awards shall lapse (contingent upon the effectiveness of the Corporate Transaction). 

 (iii) Stock Awards Held by Former Participants. In the event of a Corporate Transaction in
which the surviving corporation or acquiring corporation (or its parent company) does not assume or continue such outstanding Stock Awards or substitute similar stock awards for such outstanding Stock Awards, then with respect to Stock Awards that
have not been assumed, continued or substituted and that are held by persons other than Current Participants, the vesting of such Stock Awards (and, if applicable, the time at which such Stock Award may be exercised) shall not be accelerated and
such Stock Awards (other than a Stock Award consisting of vested and outstanding shares of Common Stock not subject to the Company’s right of repurchase) shall terminate if not exercised (if applicable) prior to the effective time of the
Corporate Transaction; provided, however, that any reacquisition or repurchase rights held by the Company with respect to such Stock Awards shall not terminate and may continue to be exercised notwithstanding the Corporate Transaction. 

(iv) Payment for Stock Awards in Lieu of Exercise. Notwithstanding the foregoing, in the event a Stock Award will terminate if not
exercised prior to the effective time of a Corporate Transaction, the Board may provide, in its sole discretion, that the holder of such Stock Award may not exercise such Stock Award but will receive a payment, in such form as may be determined by
the Board, equal in value to the excess, if any, of (i) the value of the property the holder of the Stock Award would have received upon the exercise of the Stock Award, over (ii) any exercise price payable by such holder in connection
with such exercise. 
 (d) Change in Control. A Stock Award may be subject to additional acceleration of vesting and exercisability
upon or after a Change in Control as may be provided in the Stock Award Agreement for such Stock Award or as may be provided in any other written agreement between the Company or any Affiliate and the Participant. A Stock Award may vest as to
all or any portion of the shares subject to the Stock Award (i) immediately upon the occurrence of a Change in Control, whether or not such Stock Award is assumed, continued, or substituted by a surviving or acquiring entity in the Change in
Control, or (ii) in the event a Participant’s Continuous Service is terminated, actually or constructively, within a designated period following the occurrence of a Change in Control. In the absence of such provisions, no such acceleration
shall occur.  
  

	11.	AMENDMENT OF THE PLAN AND STOCK AWARDS. 

(a) Amendment of Plan. Subject to the limitations, if any, of applicable law, the Board at any time, and from time to time, may amend
the Plan. However, except as provided in Section 10(a) relating to Capitalization Adjustments, no amendment shall be effective unless approved by the stockholders of the Company to the extent stockholder approval is necessary to satisfy
applicable law. 
 (b) Stockholder Approval. The Board, in its sole discretion, may submit any other amendment to the Plan for
stockholder approval. 
 (c) Contemplated Amendments. It is expressly contemplated that the Board may amend the Plan in any
respect the Board deems necessary or advisable to provide eligible Employees with the maximum benefits provided or to be provided under the provisions of the Code and the regulations promulgated thereunder relating to Incentive Stock Options and/or
to bring the Plan and/or Incentive Stock Options granted under it into compliance therewith. 

 (d) No Impairment of Rights. Rights under any Stock Award granted before amendment of the
Plan shall not be impaired by any amendment of the Plan unless (i) the Company requests the consent of the affected Participant, and (ii) such Participant consents in writing. 

(e) Amendment of Stock Awards. The Board, at any time and from time to time, may amend the terms of any one or more Stock Awards;
provided, however, that the rights under any Stock Award shall not be impaired by any such amendment unless (i) the Company requests the consent of the affected Participant, and (ii) such Participant consents in
writing. 
  

	12.	TERMINATION OR SUSPENSION OF THE PLAN. 

(a) Plan Term. The Board may suspend or terminate the Plan at any time. Unless sooner terminated, the Plan shall terminate on the day
before the tenth (10th) anniversary of the earlier of (i) the date the Plan is adopted by the Board, or (ii) the date the Plan is approved by the stockholders of the Company. No Stock Awards may be granted under the Plan while the
Plan is suspended or after it is terminated. 
 (b) No Impairment of Rights. Suspension or termination of the Plan shall not
impair rights and obligations under any Stock Award granted while the Plan is in effect except with the written consent of the affected Participant. 
  

	13.	EFFECTIVE DATE OF PLAN. 

 The
Plan shall become effective as determined by the Board, but no Stock Award shall be exercised (or, in the case of a Restricted Stock Award, shall be granted) unless and until the Plan has been approved by the stockholders of the Company, which
approval shall be within twelve (12) months before or after the date the Plan is adopted by the Board. 
  

	14.	CHOICE OF LAW. 

 The law of the State of
Delaware shall govern all questions concerning the construction, validity and interpretation of this Plan, without regard to that state’s conflict of laws rules.

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