EX-10.21



 EXHIBIT 10.21 

AMENDED AND RESTATED MABVAX THERAPEUTICS HOLDINGS, INC. 

2014 EMPLOYEE, DIRECTOR AND CONSULTANT EQUITY INCENTIVE PLAN 
  

	 	1.	 DEFINITIONS. 



Unless otherwise specified or unless the context otherwise requires, the following terms, as used in this Amended and Restated
MabVax Therapeutics Holdings, Inc. 2014 Employee, Director and Consultant Equity Incentive Plan, have the following meanings: 

Administrator means the Board of Directors, unless it has delegated power to act on its behalf to the Committee, in
which case the Administrator means the Committee. 
 Affiliate means a corporation which, for purposes of
Section 424 of the Code, is a parent or subsidiary of the Company, direct or indirect. 
 Agreement means an
agreement between the Company and a Participant delivered pursuant to the Plan and pertaining to a Stock Right, in such form as the Administrator shall approve. 

Board of Directors means the Board of Directors of the Company. 

California Participant means a Participant who resides in the State of California. 

Cause means, with respect to a Participant (a) dishonesty with respect to the Company or any Affiliate,
(b) insubordination, substantial malfeasance or non-feasance of duty, (c) unauthorized disclosure of confidential information, (d) breach by a Participant of any provision of any employment,
consulting, advisory, nondisclosure, non-competition or similar agreement between the Participant and the Company or any Affiliate, and (e) conduct substantially prejudicial to the business of the Company or any Affiliate; provided, however,
that any provision in an agreement between a Participant and the Company or an Affiliate, which contains a conflicting definition of Cause for termination and which is in effect at the time of such termination, shall supersede this definition with
respect to that Participant. The determination of the Administrator as to the existence of Cause will be conclusive on the Participant and the Company. 

Certificate of Designations means that certain Certificate of Designations, Preferences and Rights of Series A-1
Convertible Preferred Stock as filed with the Secretary of State of Delaware on July 7, 2014. 
 Change of
Control means the occurrence of any of the following events: 
  

	 	(i)	 Ownership. Any “Person” (as such term is used in Sections 13(d) and 14(d) of the Exchange Act) becomes the “Beneficial
Owner” (as defined in Rule 13d-3 under the Exchange Act), directly or indirectly, of securities of the Company representing 50% or more of the total voting power represented by the Company’s then outstanding voting securities (excluding
for this purpose any such voting securities held by the Company or its Affiliates or by any employee benefit plan of the Company) pursuant to a transaction or a series of related transactions which the Board of Directors does not approve; or



  

	 	(ii)	 Merger/Sale of Assets. (A) A merger or consolidation of the Company whether or not approved by the Board of Directors, other than a
Reverse Merger (as defined in the Certificate of Designations) or a merger or consolidation which would result in the voting securities of the Company outstanding immediately prior thereto continuing to represent (either by remaining outstanding or
by being converted into voting securities of the surviving entity or the parent of such corporation) more than 50% of the total voting 



  
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power represented by the voting securities of the Company or such surviving entity or parent of such corporation, as the case may be, outstanding immediately after such merger or consolidation;
or (B) the sale or disposition by the Company of all or substantially all of the Company’s assets in a transaction requiring stockholder approval. 


  


	 	(iii)	 “Change of Control” shall be interpreted, if applicable, in a manner, and limited to the extent necessary, so that it will not cause
adverse tax consequences under Section 409A. 


 Code means the United States Internal Revenue
Code of 1986, as amended including any successor statute, regulation and guidance thereto. 
 Committee means the
committee of the Board of Directors to which the Board of Directors has delegated power to act under or pursuant to the provisions of the Plan. 

Common Stock means shares of the Company’s common stock, $0.01 par value per share. 

Company means MabVax Therapeutics Holdings, Inc., a Delaware corporation. 

Consultant means any natural person who is an advisor or consultant that provides bona fide services to the Company or
its Affiliates, provided that such services 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 Company’s or its Affiliates’
securities. 
 Disability or Disabled means permanent and total disability as defined in
Section 22(e)(3) of the Code. 
 Employee means any employee of the Company or of an Affiliate (including,
without limitation, an employee who is also serving as an officer or director of the Company or of an Affiliate), designated by the Administrator to be eligible to be granted one or more Stock Rights under the Plan. 

Exchange Act means the Securities Exchange Act of 1934, as amended. 

Fair Market Value of a Share of Common Stock means: 

(1)         If the Common Stock is listed on a national securities
exchange or traded in the over-the-counter market and sales prices are regularly reported for the Common Stock, the closing or, if not applicable, the last price of the
Common Stock on the composite tape or other comparable reporting system for the trading day on the applicable date and if such applicable date is not a trading day, the last market trading day prior to such date; 

(2)         If the Common Stock is not traded on a national
securities exchange but is traded on the over-the-counter market, if sales prices are not regularly reported for the Common Stock for the trading day referred to in
clause (1), and if bid and asked prices for the Common Stock are regularly reported, the mean between the bid and the asked price for the Common Stock at the close of trading in the over-the-counter market for the trading day on which Common
Stock was traded on the applicable date and if such applicable date is not a trading day, the last market trading day prior to such date; and 

(3)         If the Common Stock is neither listed on a national
securities exchange nor traded in the over-the-counter market, such value as the Administrator, in good faith, shall determine. 

ISO means an option intended to qualify as an incentive stock option under Section 422 of the Code. 

  
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 Non-Qualified Option means an
option which is not intended to qualify as an ISO. 
 Option means an ISO or
Non-Qualified Option granted under the Plan. 
 Participant means an
Employee, director or Consultant of the Company or an Affiliate to whom one or more Stock Rights are granted under the Plan. As used herein, “Participant” shall include “Participant’s Survivors” where the context requires.

 Plan means this Amended and Restated MabVax Therapeutics Holdings, Inc. 2014 Employee, Director and Consultant
Equity Incentive Plan. 
 Public Company Date means the date shares of Common Stock of the Company (or its successor
by merger, recapitalization, reorganization, or otherwise) are registered under the Exchange Act. 
 Securities Act
means the Securities Act of 1933, as amended. 
 Shares means shares of the Common Stock as to which Stock Rights
have been or may be granted under the Plan or any shares of capital stock into which the Shares are changed or for which they are exchanged within the provisions of Paragraph 3 of the Plan. The Shares issued under the Plan may be authorized and
unissued shares or shares held by the Company in its treasury, or both. 
 Stock-Based Award means a grant by the
Company under the Plan of an equity award or an equity based award which is not an Option or a Stock Grant. 
 Stock
Grant means a grant by the Company of Shares under the Plan. 
 Stock Right means a right to Shares or the value
of Shares of the Company granted pursuant to the Plan — an ISO, a Non-Qualified Option, a Stock Grant or a Stock-Based Award. 

Survivor means a deceased Participant’s legal representatives and/or any person or persons who acquired the
Participant’s rights to a Stock Right by will or by the laws of descent and distribution. 
  

	 	2.	 PURPOSES OF THE PLAN. 



The Plan is intended to encourage ownership of Shares by Employees and directors of and certain Consultants to the Company and
its Affiliates in order to attract and retain such people, to induce them to work for the benefit of the Company or of an Affiliate and to provide additional incentive for them to promote the success of the Company or of an Affiliate. The Plan
provides for the granting of ISOs, Non-Qualified Options, Stock Grants and Stock-Based Awards. 
  

	 	3.	 SHARES SUBJECT TO THE PLAN. 



(a)         The number of Shares which may be issued from time to time pursuant to
this Plan shall be the sum of: (i) 89,698 shares of Common Stock and (ii) any shares of Common Stock that are represented by awards granted under the Company’s 2008 Equity Incentive Plan (as Amended) that are forfeited, expire or are
cancelled without delivery of shares of Common Stock or which result in the forfeiture of shares of Common Stock back to the Company on or after February 12, 2014 or the equivalent of such number of Shares after the Administrator, in its sole
discretion, has interpreted the effect of any stock split, stock dividend, combination, recapitalization or similar transaction in accordance with Paragraph 24 of this Plan; provided, however, that no more than 68,375 Shares shall be added to the
Plan pursuant to subsection (ii). 
 (b)         If an Option ceases to be
“outstanding”, in whole or in part (other than by exercise), or if the Company shall reacquire (at not more than its original issuance price) any Shares issued pursuant to a Stock Grant or 


  
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Stock-Based Award, or if any Stock Right expires or is forfeited, cancelled, or otherwise terminated or results in any Shares not being issued, the unissued or reacquired Shares which were
subject to such Stock Right shall again be available for issuance from time to time pursuant to this Plan. Notwithstanding the foregoing, if a Stock Right is exercised, in whole or in part, by tender of Shares or if the Company or an
Affiliate’s tax withholding obligation is satisfied by withholding Shares, the number of Shares deemed to have been issued under the Plan for purposes of the limitation set forth in Paragraph 3(a) above shall be the number of Shares that were
subject to the Stock Right or portion thereof, and not the net number of Shares actually issued. However, in the case of ISOs, the foregoing provisions shall be subject to any limitations under the Code. 

 

	 	4.	 ADMINISTRATION OF THE PLAN. 



The Administrator of the Plan will be the Board of Directors, except to the extent the Board of Directors delegates its
authority to the Committee, in which case the Committee shall be the Administrator. Subject to the provisions of the Plan, the Administrator is authorized to: 

(a)         Interpret the provisions of the Plan and all Stock Rights and to make all
rules and determinations which it deems necessary or advisable for the administration of the Plan; 

(b)         Determine which Employees, directors and Consultants shall be granted
Stock Rights; 
 (c)         Determine the number of Shares for which a Stock Right
or Stock Rights shall be granted; 
 (d)         Specify the terms and conditions
upon which a Stock Right or Stock Rights may be granted; 
 (e)         Amend any
term or condition of any outstanding Stock Right, including, without limitation, to reduce or increase the exercise price or purchase price, accelerate the vesting schedule or extend the expiration date, provided that (i) such term or condition
as amended is permitted by the Plan; (ii) any such amendment shall not impair the rights of a Participant under any Stock Right previously granted without such Participant’s consent or in the event of death of the Participant the
Participant’s Survivors; and (iii) any such amendment shall be made only after the Administrator determines whether such amendment would cause any adverse tax consequences to the Participant, including, but not limited to, the annual
vesting limitation contained in Section 422(d) of the Code and described in Paragraph 6(b)(iv) below with respect to ISOs and pursuant to Section 409A of the Code; 

(f)         Buy out for a payment in cash or Shares, a Stock Right previously granted
and/or cancel any such Stock Right and grant in substitution therefor other Stock Rights, covering the same or a different number of Shares and having an exercise price or purchase price per share which may be lower or higher than the exercise price
or purchase price of the cancelled Stock Right, based on such terms and conditions as the Administrator shall establish and the Participant shall accept; and 

(g)         Adopt any sub-plans applicable to residents of any specified jurisdiction
as it deems necessary or appropriate in order to comply with or take advantage of any tax or other laws applicable to the Company, any Affiliate or to Participants or to otherwise facilitate the administration of the Plan, which sub-plans may
include additional restrictions or conditions applicable to Stock Rights or Shares issuable pursuant to a Stock Right; 
 provided, however, that all such
interpretations, rules, determinations, terms and conditions shall be made and prescribed in the context of not causing any adverse tax consequences under Section 409A of the Code and preserving the tax status under Section 422 of the Code
of those Options which are designated as ISOs. Subject to the foregoing, the interpretation and construction by the Administrator of any provisions of the Plan or of any Stock Right granted under it shall be final, unless otherwise determined by the
Board of Directors, if the Administrator is the Committee. In addition, if the Administrator is the Committee, the Board of Directors may take any action under the Plan that would otherwise be the responsibility of the Committee. 

To the extent permitted under applicable law, the Board of Directors or the Committee may allocate all or any portion of its
responsibilities and powers to any one or more of its members and may delegate all or any portion 

  
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of its responsibilities and powers to any other person selected by it. The Board of Directors or the Committee may revoke any such allocation or delegation at any time. Notwithstanding the
foregoing, only the Board of Directors or the Committee shall be authorized to grant a Stock Right to any director of the Company or to any “officer” of the Company as defined by Rule 16a-1 under the Exchange Act. 

 

	 	5.	 ELIGIBILITY FOR PARTICIPATION. 



The Administrator will, in its sole discretion, name the Participants in the Plan; provided, however, that each Participant
must be an Employee, director or Consultant of the Company or of an Affiliate at the time a Stock Right is granted. Notwithstanding the foregoing, the Administrator may authorize the grant of a Stock Right to a person not then an Employee, director
or Consultant of the Company or of an Affiliate; provided, however, that the actual grant of such Stock Right shall be conditioned upon such person becoming eligible to become a Participant at or prior to the time of the execution of the Agreement
evidencing such Stock Right. ISOs may be granted only to Employees who are deemed to be residents of the United States for tax purposes. Non-Qualified Options, Stock Grants and Stock-Based Awards may be
granted to any Employee, director or Consultant of the Company or an Affiliate. The granting of any Stock Right to any individual shall neither entitle that individual to, nor disqualify him or her from, participation in any other grant of Stock
Rights or any grant under any other benefit plan established by the Company or any Affiliate for Employees, directors or Consultants. 
  

	 	6.	 TERMS AND CONDITIONS OF OPTIONS. 



Each Option shall be set forth in writing in an Option Agreement, duly executed by the Company and, to the extent required by
law or requested by the Company, by the Participant. The Administrator may provide that Options be granted subject to such terms and conditions, consistent with the terms and conditions specifically required under this Plan, as the Administrator may
deem appropriate including, without limitation, subsequent approval by the shareholders of the Company of this Plan or any amendments thereto. The Option Agreements shall be subject to at least the following terms and conditions: 

(a)         Non-Qualified Options: Each
Option intended to be a Non-Qualified Option shall be subject to the terms and conditions which the Administrator determines to be appropriate and in the best interest of the Company, subject to the following
minimum standards for any such Non-Qualified Option: 
  

	 	(i)	 Exercise Price: Each Option Agreement shall state the exercise price (per share) of the Shares covered by each Option, which exercise price
shall be determined by the Administrator and shall be at least equal to the greater of (i) 100% of the Fair Market Value of the Common Stock, and (ii) 150% of the initial Conversion Price (as defined in the Certificate of Designations).



  

	 	(ii)	 Number of Shares: Each Option Agreement shall state the number of Shares to which it pertains. 



 

	 	(iii)	 Option Periods: Each Option Agreement shall state the date or dates on which it first is exercisable and the date after which it may no
longer be exercised, and may provide that the Option rights accrue or become exercisable in installments over a period of months or years, or upon the occurrence of certain conditions or the attainment of stated goals or events. For California
Participants, the exercise period of the Option set forth in the Option Agreement shall not be more than 120 months from the date of grant. 


  

	 	(iv)	 Option Conditions: Exercise of any Option may be conditioned upon the Participant’s execution of a Share purchase agreement in form
satisfactory to the Administrator providing for certain protections for the Company and its other shareholders, including requirements that: 


  

	 	A.	 The Participant’s or the Participant’s Survivors’ right to sell or transfer the Shares may be restricted; and 




  
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	 	B.	 The Participant or the Participant’s Survivors may be required to execute letters of investment intent and must also acknowledge that the
Shares will bear legends noting any applicable restrictions. 


  

	 	(v)	 Term of Option: Each Option shall terminate not more than ten years from the date of the grant or at such earlier time as the Option
Agreement may provide. 


  

	 	(vi)	 Vesting. Vesting shall be as provided in each Option Agreement and, except as otherwise provided in Schedule I hereto, the Option
Agreements shall state that a Participant shall acquire a vested interest in the Option Shares as follows: (i) twenty-five percent (25%) of the Option shares shall vest upon the one (1) year anniversary of the Vesting Start Date (as
defined in the Option Agreements) and (ii) the balance of the Option Shares shall vest in a series a thirty-six (36) successive equal monthly installments upon completion of each additional month of service for the Company measured from
the first anniversary of the Vesting Start Date, provided that the Participant is an employee, consultant or director of the Company, its successor, parent, subsidiary or Affiliate of the Company as of each such vesting date. 



(b)         ISOs: Each Option intended to be an ISO shall be issued only to an
Employee who is deemed to be a resident of the United States for tax purposes, and shall be subject to the following terms and conditions, with such additional restrictions or changes as the Administrator determines are appropriate but not in
conflict with Section 422 of the Code and relevant regulations and rulings of the Internal Revenue Service: 
  

	 	(i)	 Minimum standards: The ISO shall meet the minimum standards required of Non-Qualified Options, as
described in Paragraph 6(a) above, except clause (i) and (v) thereunder. 


  

	 	(ii)	 Exercise Price: Immediately before the ISO is granted, if the Participant owns, directly or by reason of the applicable attribution rules in
Section 424(d) of the Code: 


  

	 	A.	 10% or less of the total combined voting power of all classes of stock of the Company or an Affiliate, the exercise price per share of the
Shares covered by each ISO shall not be less than the greater of (i) 100% of the Fair Market Value per share of the Common Stock on the date of grant of the Option and (ii) 150% of the initial Conversion Price; or 



 

	 	B.	 More than 10% of the total combined voting power of all classes of stock of the Company or an Affiliate, the exercise price per share of the Shares
covered by each ISO shall not be less than the greater of (i) 110% of the Fair Market Value per share of the Common Stock on the date of grant of the Option and (ii) 150% of the initial Conversion Price. 



 

	 	(iii)	 Term of Option: For Participants who own: 


  

	 	A.	 10% or less of the total combined voting power of all classes of stock of the Company or an Affiliate, each ISO shall terminate not more
than ten years from the date of the grant or at such earlier time as the Option Agreement may provide; or 


  

	 	B.	 More than 10% of the total combined voting power of all classes of stock of the Company or an Affiliate, each ISO shall terminate not more than
five years from the date of the grant or at such earlier time as the Option Agreement may provide. 



  
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	 	(iv)	 Limitation on Yearly Exercise: The Option Agreements shall restrict the amount of ISOs which may become exercisable in any calendar year
(under this or any other ISO plan of the Company or an Affiliate) so that the aggregate Fair Market Value (determined on the date each ISO is granted) of the stock with respect to which ISOs are exercisable for the first time by the Participant in
any calendar year does not exceed $100,000. 


  

	 	7.	 TERMS AND CONDITIONS OF STOCK GRANTS. 



Each Stock Grant to a Participant shall state the principal terms in an Agreement duly executed by the Company and, to the
extent required by law or requested by the Company, by the Participant. For California Participants, each Stock Grant shall be issued within ten (10) years from the earlier of the date the Plan is adopted or approved by the Company’s
shareholders. The Agreement shall be in a form approved by the Administrator and shall contain terms and conditions which the Administrator determines to be appropriate and in the best interest of the Company, subject to the following minimum
standards: 
 (a)         Each Agreement shall state the purchase price per share,
if any, of the Shares covered by each Stock Grant, which purchase price shall be determined by the Administrator but shall not be less than the minimum consideration required by the Delaware Corporation Law, if any, on the date of the grant of the
Stock Grant; 
 (b)         Each Agreement shall state the number of Shares to which
the Stock Grant pertains; and 
 (c)         Each Agreement shall include the terms
of any right of the Company to restrict or reacquire the Shares subject to the Stock Grant (such right, the “Acquisition Right”). The Shares shall be subject to the Acquisition Right as follows: All of the Shares shall initially be
subject to the Acquisition Right. On the first anniversary of the Vesting Start Date (as provided in such Agreement), twenty-five percent (25%) the Shares shall vest and be released from the Acquisition Right, and thereafter, the balance of the
Shares shall vest and be released from the Acquisition Right in a series of thirty six (36) equal monthly installments until all the Shares are released from the Acquisition Right, provided that in each case that Purchaser remains an employee
or director of, or a consultant to, the Company, its successor, parent or a subsidiary of the Company as of each such vesting date. 
  

	 	8.	 TERMS AND CONDITIONS OF OTHER STOCK-BASED AWARDS. 



The Administrator shall have the right to grant other Stock-Based Awards based upon the Common Stock having such terms and
conditions as the Administrator may determine, including, without limitation, the grant of Shares based upon certain conditions, the grant of securities convertible into Shares and the grant of stock appreciation rights, phantom stock awards or
stock units. The principal terms of each Stock-Based Award shall be set forth in an Agreement, duly executed by the Company and, to the extent required by law or requested by the Company, by the Participant. The Agreement shall be in a form approved
by the Administrator and shall contain terms and conditions which the Administrator determines to be appropriate and in the best interest of the Company, provided, however that any such Stock-Based Award shall be subject to the Acquisition Right as
follows: The entire Stock-Based shall initially be subject to the Acquisition Right. On the first anniversary of the Vesting Start Date (as provided in such Agreement), twenty-five percent (25%) of the Stock-Based Award shall vest and be
released from the Acquisition Right, and thereafter, the balance of the Stock-Based Award shall vest and be released from the Acquisition Right in a series of thirty six (36) equal monthly installments until the entire Stock-Based Award is
released from the Acquisition Right, provided that in each case that Purchaser remains an employee or director of, or a consultant to, the Company, its successor, parent or a subsidiary of the Company as of each such vesting date. 

The Company intends that the Plan and any Stock-Based Awards granted hereunder be exempt from the application of
Section 409A of the Code or meet the requirements of paragraphs (2), (3) and (4) of subsection (a) of Section 409A of the Code, to the extent applicable, and be operated in accordance with Section 409A so that any
compensation deferred under any Stock-Based Award (and applicable investment earnings) shall not be included in income under Section 409A of the Code. Any ambiguities in the Plan shall be construed to effect the intent as described in this
Paragraph 8. 

  
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	 	9.	 EXERCISE OF OPTIONS AND ISSUE OF SHARES. 



An Option (or any part or installment thereof) shall be exercised by giving written notice to the Company or its designee (in
a form acceptable to the Administrator, which may include electronic notice), together with provision for payment of the aggregate exercise price in accordance with this Paragraph for the Shares as to which the Option is being exercised, and upon
compliance with any other condition(s) set forth in the Option Agreement. Such notice shall be signed by the person exercising the Option (which signature may be provided electronically in a form acceptable to the Administrator), shall state the
number of Shares with respect to which the Option is being exercised and shall contain any representation required by the Plan or the Option Agreement. Payment of the exercise price for the Shares as to which such Option is being exercised shall be
made (a) in United States dollars in cash or by check, or (b) at the discretion of the Administrator, through delivery of shares of Common Stock held for at least six months (if required to avoid negative accounting treatment) having a
Fair Market Value equal as of the date of the exercise to the aggregate cash exercise price for the number of Shares as to which the Option is being exercised, or (c) at the discretion of the Administrator, by having the Company retain from the
Shares otherwise issuable upon exercise of the Option, a number of Shares having a Fair Market Value equal as of the date of exercise to the aggregate exercise price for the number of Shares as to which the Option is being exercised, or (d) at
the discretion of the Administrator, in accordance with a cashless exercise program established with a securities brokerage firm, and approved by the Administrator, or (e) at the discretion of the Administrator, by any combination of (a), (b),
(c) and (d) above or (f) at the discretion of the Administrator, by payment of such other lawful consideration as the Administrator may determine. Notwithstanding the foregoing, the Administrator shall accept only such payment on
exercise of an ISO as is permitted by Section 422 of the Code. 
 The Company shall then reasonably promptly deliver
the Shares as to which such Option was exercised to the Participant (or to the Participant’s Survivors, as the case may be). In determining what constitutes “reasonably promptly,” it is expressly understood that the issuance and
delivery of the Shares may be delayed by the Company in order to comply with any law or regulation (including, without limitation, state securities or “blue sky” laws) which requires the Company to take any action with respect to the
Shares prior to their issuance. The Shares shall, upon delivery, be fully paid, non-assessable Shares. 
  

	 	10.	 PAYMENT IN CONNECTION WITH THE ISSUANCE OF STOCK GRANTS AND STOCK-BASED AWARDS AND ISSUE OF SHARES. 



Any Stock Grant or Stock-Based Award requiring payment of a purchase price for the Shares as to which such Stock Grant or
Stock-Based Award is being granted shall be made (a) in United States dollars in cash or by check, or (b) at the discretion of the Administrator, through delivery of shares of Common Stock held for at least six months (if required to avoid
negative accounting treatment) and having a Fair Market Value equal as of the date of payment to the purchase price of the Stock Grant or Stock-Based Award, or (c) at the discretion of the Administrator, by any combination of (a) and
(b) above; or (d) at the discretion of the Administrator, by payment of such other lawful consideration as the Administrator may determine. 

The Company shall when required by the applicable Agreement, reasonably promptly deliver the Shares as to which such Stock
Grant or Stock-Based Award was made to the Participant (or to the Participant’s Survivors, as the case may be), subject to any escrow provision set forth in the applicable Agreement. In determining what constitutes “reasonably
promptly,” it is expressly understood that the issuance and delivery of the Shares may be delayed by the Company in order to comply with any law or regulation (including, without limitation, state securities or “blue sky” laws) which
requires the Company to take any action with respect to the Shares prior to their issuance. 
  

	 	11.	 RIGHTS AS A SHAREHOLDER. 



No Participant to whom a Stock Right has been granted shall have rights as a shareholder with respect to any Shares covered by
such Stock Right except after due exercise of an Option or issuance of Shares as set forth in any Agreement, tender of the aggregate exercise or purchase price, if any, for the Shares being purchased and registration of the Shares in the
Company’s share register in the name of the Participant. 

  
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	 	12.	 ASSIGNABILITY AND TRANSFERABILITY OF STOCK RIGHTS. 



By its terms, a Stock Right granted to a Participant shall not be transferable by the Participant other than (i) by will
or by the laws of descent and distribution, or (ii) as approved by the Administrator in its discretion and set forth in the applicable Agreement provided that no Stock Right may be transferred by a Participant for value. For California
Participants, Stock Rights shall not be transferable by the Participant other than by will or by the laws of descent and distribution, to a revocable trust, or as permitted by Rule 701 of the Securities Act. Notwithstanding the foregoing, an ISO
transferred except in compliance with clause (i) above shall no longer qualify as an ISO. The designation of a beneficiary of a Stock Right by a Participant, with the prior approval of the Administrator and in such form as the Administrator
shall prescribe, shall not be deemed a transfer prohibited by this Paragraph. Except as provided above during the Participant’s lifetime a Stock Right shall only be exercisable by or issued to such Participant (or his or her legal
representative) and shall not be assigned, pledged or hypothecated in any way (whether by operation of law or otherwise) and shall not be subject to execution, attachment or similar process. Any attempted transfer, assignment, pledge, hypothecation
or other disposition of any Stock Right or of any rights granted thereunder contrary to the provisions of this Plan, or the levy of any attachment or similar process upon a Stock Right, shall be null and void. 

 

	 	13.	 EFFECT ON OPTIONS OF TERMINATION OF SERVICE OTHER THAN FOR CAUSE OR DEATH OR DISABILITY. 



Except as otherwise provided in a Participant’s Option Agreement, in the event of a termination of service (whether as an
Employee, director or Consultant) with the Company or an Affiliate before the Participant has exercised an Option, the following rules apply: 

(a)         A Participant who ceases to be an Employee, director or Consultant of the
Company or of an Affiliate (for any reason other than termination for Cause, Disability, or death for which events there are special rules in Paragraphs 14, 15, and 16, respectively), may exercise any Option granted to him or her to the extent that
the Option is exercisable on the date of such termination of service, but only within such term as the Administrator has designated in a Participant’s Option Agreement. 

(b)         Except as provided in Subparagraph (c) below, or Paragraph 15 or 16,
each Option shall terminate effective as of the thirty (30) days after the date of the Participant’s termination of employment. For Options granted to California Participants, an Option must be exercisable for at least thirty
(30) days from the date of a Participant’s termination of employment. 
 (c)
        The provisions of this Paragraph, and not the provisions of Paragraph 15 or 16, shall apply to a Participant who subsequently becomes Disabled or dies after the termination of employment, director
status or consultancy; provided, however, in the case of a Participant’s Disability or death within three months after the termination of employment, director status or consultancy, the Participant or the Participant’s Survivors may
exercise the Option within six months after the date of the Participant’s termination of service, but in no event after the date of expiration of the term of the Option. 

(d)         Notwithstanding anything herein to the contrary, if subsequent to a
Participant’s termination of employment, termination of director status or termination of consultancy, but prior to the exercise of an Option, the Administrator determines that, either prior or subsequent to the Participant’s termination,
the Participant engaged in conduct which would constitute Cause, then such Participant shall forthwith cease to have any right to exercise any Option. 

(e)         A Participant to whom an Option has been granted under the Plan who is
absent from the Company or an Affiliate because of temporary disability (any disability other than a Disability as defined in Paragraph 1 hereof), or who is on leave of absence for any purpose, shall not, during the period of any such absence, be
deemed, by virtue of such absence alone, to have terminated such Participant’s employment, director status or consultancy with the Company or with an Affiliate, except as the Administrator may otherwise expressly provide; provided, however,
that, for ISOs, any leave of absence granted by the Administrator of greater than ninety days, 

  
 9 








 
unless pursuant to a contract or statute that guarantees the right to reemployment, shall cause such ISO to become a Non-Qualified Option on the
181st day following such leave of absence. 
 (f)
        Except as required by law or as set forth in a Participant’s Option Agreement, Options granted under the Plan shall not be affected by any change of a Participant’s status within or among the
Company and any Affiliates, so long as the Participant continues to be an Employee, director or Consultant of the Company or any Affiliate. 
  

	 	14.	 EFFECT ON OPTIONS OF TERMINATION OF SERVICE FOR CAUSE. 



Except as otherwise provided in a Participant’s Option Agreement, the following rules apply if the Participant’s
service (whether as an Employee, director or Consultant) with the Company or an Affiliate is terminated for Cause prior to the time that all his or her outstanding Options have been exercised: 

(a)         Except as otherwise required with respect to California Participants, all
outstanding Options as of the time the Participant is notified his or her service is terminated for Cause will immediately be forfeited. 

(b)         Cause is not limited to events which have occurred prior to a
Participant’s termination of service, nor is it necessary that the Administrator’s finding of Cause occur prior to termination. If the Administrator determines, subsequent to a Participant’s termination of service but prior to the
exercise of an Option, that either prior or subsequent to the Participant’s termination the Participant engaged in conduct which would constitute Cause, then the right to exercise any Option is forfeited. 

 

	 	15.	 EFFECT ON OPTIONS OF TERMINATION OF SERVICE FOR DISABILITY. 



Except as otherwise provided in a Participant’s Option Agreement: 

(a)         A Participant who ceases to be an Employee, director or Consultant of the
Company or of an Affiliate by reason of Disability may exercise any Option granted to such Participant: 
  

	 	(i)	 To the extent that the Option has become exercisable but has not been exercised on the date of the Participant’s termination of service due to
Disability; and 


  

	 	(ii)	 In the event rights to exercise the Option accrue periodically, to the extent of a pro rata portion through the date of the Participant’s
termination of service due to Disability of any additional vesting rights that would have accrued on the next vesting date had the Participant not become Disabled. The proration shall be based upon the number of days accrued in the current vesting
period prior to the date of the Participant’s termination of service due to Disability. 



(b)         A Disabled Participant may exercise the Option only within the period
ending one year after the date of the Participant’s termination of service due to Disability, notwithstanding that the Participant might have been able to exercise the Option as to some or all of the Shares on a later date if the Participant
had not been terminated due to Disability and had continued to be an Employee, director or Consultant or, if earlier, within the originally prescribed term of the Option. For Options granted to California Participants, a Participant may exercise
such rights for at least six (6) months from the date of termination of service due to Disability. 

(c)         The Administrator shall make the determination both of whether Disability
has occurred and the date of its occurrence (unless a procedure for such determination is set forth in another agreement between the Company and such Participant, in which case such procedure shall be used for such determination). If requested, the
Participant shall be examined by a physician selected or approved by the Administrator, the cost of which examination shall be paid for by the Company. 

  
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	 	16.	 EFFECT ON OPTIONS OF DEATH WHILE AN EMPLOYEE, DIRECTOR OR CONSULTANT. 



Except as otherwise provided in a Participant’s Option Agreement: 

(a)         In the event of the death of a Participant while the Participant is an
Employee, director or Consultant of the Company or of an Affiliate, such Option may be exercised by the Participant’s Survivors: 
  

	 	(i)	 To the extent that the Option has become exercisable but has not been exercised on the date of death; and 



 

	 	(ii)	 In the event rights to exercise the Option accrue periodically, to the extent of a pro rata portion through the date of death of any additional
vesting rights that would have accrued on the next vesting date had the Participant not died. The proration shall be based upon the number of days accrued in the current vesting period prior to the Participant’s date of death.



 (b)         If the Participant’s Survivors wish to
exercise the Option, they must take all necessary steps to exercise the Option within one year after the date of death of such Participant, notwithstanding that the decedent might have been able to exercise the Option as to some or all of the Shares
on a later date if he or she had not died and had continued to be an Employee, director or Consultant or, if earlier, within the originally prescribed term of the Option. For Options granted to California Participants, the Participant’s
Survivors must be allowed to take all necessary steps to exercise the Option for at least six (6) months from the date of death of such Participant. 
  

	 	17.	 EFFECT OF TERMINATION OF SERVICE ON STOCK GRANTS AND STOCK-BASED AWARDS. 



In the event of a termination of service (whether as an Employee, director or Consultant) with the Company or an Affiliate for
any reason before the Participant has accepted a Stock Grant or a Stock-Based Award and paid the purchase price, if required, such grant shall terminate. 

For purposes of this Paragraph 17 and Paragraph 18 below, a Participant to whom a Stock Grant has been issued under the Plan
who is absent from work with the Company or with an Affiliate because of temporary disability (any disability other than a Disability as defined in Paragraph 1 hereof), or who is on leave of absence for any purpose, shall not, during the period of
any such absence, be deemed, by virtue of such absence alone, to have terminated such Participant’s employment, director status or consultancy with the Company or with an Affiliate, except as the Administrator may otherwise expressly provide.

 In addition, for purposes of this Paragraph 17 and Paragraph 18 below, any change of employment or other service within
or among the Company and any Affiliates shall not be treated as a termination of employment, director status or consultancy so long as the Participant continues to be an Employee, director or Consultant of the Company or any Affiliate. 

 

	 	18.	 EFFECT ON STOCK GRANTS OF TERMINATION OF SERVICE OTHER THAN FOR CAUSE OR DEATH OR DISABILITY. 



Except as otherwise provided in a Participant’s Stock Grant Agreement, in the event of a termination of service (whether
as an Employee, director or Consultant), other than termination for Cause, Disability, or death for which events there are special rules in Paragraphs 19, 20, and 21, respectively, before all forfeiture provisions or Company rights of repurchase
shall have lapsed, then the Company shall have the right to cancel or repurchase that number of Shares subject to a Stock Grant as to which the Company’s forfeiture or repurchase rights have not lapsed. 

  
 11 









	 	19.	 EFFECT ON STOCK GRANTS OF TERMINATION OF SERVICE FOR CAUSE. 



Except as otherwise provided in a Participant’s Stock Grant Agreement, the following rules apply if the
Participant’s service (whether as an Employee, director or Consultant) with the Company or an Affiliate is terminated for Cause: 

(a)         All Shares subject to any Stock Grant that remain subject to forfeiture
provisions or as to which the Company shall have a repurchase right shall be immediately forfeited to the Company as of the time the Participant is notified his or her service is terminated for Cause. 

(b)         Cause is not limited to events which have occurred prior to a
Participant’s termination of service, nor is it necessary that the Administrator’s finding of Cause occur prior to termination. If the Administrator determines, subsequent to a Participant’s termination of service, that either prior
or subsequent to the Participant’s termination the Participant engaged in conduct which would constitute Cause, then all Shares subject to any Stock Grant that remained subject to forfeiture provisions or as to which the Company had a
repurchase right on the date of termination shall be immediately forfeited to the Company. 
  

	 	20.	 EFFECT ON STOCK GRANTS OF TERMINATION OF SERVICE FOR DISABILITY. 



Except as otherwise provided in a Participant’s Stock Grant Agreement, the following rules apply if a Participant ceases
to be an Employee, director or Consultant of the Company or of an Affiliate by reason of Disability: to the extent the forfeiture provisions or the Company’s rights of repurchase have not lapsed on the date of Disability, they shall be
exercisable; provided, however, that in the event such forfeiture provisions or rights of repurchase lapse periodically, such provisions or rights shall lapse to the extent of a pro rata portion of the Shares subject to such Stock Grant through the
date of Disability as would have lapsed had the Participant not become Disabled. The proration shall be based upon the number of days accrued prior to the date of Disability. 

The Administrator shall make the determination both as to whether Disability has occurred and the date of its occurrence
(unless a procedure for such determination is set forth in another agreement between the Company and such Participant, in which case such procedure shall be used for such determination). If requested, the Participant shall be examined by a physician
selected or approved by the Administrator, the cost of which examination shall be paid for by the Company. 
  

	 	21.	 EFFECT ON STOCK GRANTS OF DEATH WHILE AN EMPLOYEE, DIRECTOR OR CONSULTANT. 



Except as otherwise provided in a Participant’s Stock Grant Agreement, the following rules apply in the event of the
death of a Participant while the Participant is an Employee, director or Consultant of the Company or of an Affiliate: to the extent the forfeiture provisions or the Company’s rights of repurchase have not lapsed on the date of death, they
shall be exercisable; provided, however, that in the event such forfeiture provisions or rights of repurchase lapse periodically, such provisions or rights shall lapse to the extent of a pro rata portion of the Shares subject to such Stock Grant
through the date of death as would have lapsed had the Participant not died. The proration shall be based upon the number of days accrued prior to the Participant’s date of death. 

 

	 	22.	 PURCHASE FOR INVESTMENT. 



Unless the offering and sale of the Shares shall have been effectively registered under the Securities Act, the Company shall
be under no obligation to issue Shares under the Plan unless and until the following conditions have been fulfilled: 

  
 12 








 (a)         The person who receives a
Stock Right shall warrant to the Company, prior to the receipt of Shares, that such person is acquiring such Shares for his or her own account, for investment, and not with a view to, or for sale in connection with, the distribution of any such
Shares, in which event the person acquiring such Shares shall be bound by the provisions of the following legend (or a legend in substantially similar form) which shall be endorsed upon the certificate evidencing the Shares issued pursuant to such
exercise or such grant: 
 “The shares represented by this certificate have been taken for investment and they may not
be sold or otherwise transferred by any person, including a pledgee, unless (1) either (a) a Registration Statement with respect to such shares shall be effective under the Securities Act of 1933, as amended, or (b) the Company shall
have received an opinion of counsel satisfactory to it that an exemption from registration under such Act is then available, and (2) there shall have been compliance with all applicable state securities laws.” 

(b)         At the discretion of the Administrator, the Company shall have received an
opinion of its counsel that the Shares may be issued in compliance with the Securities Act without registration thereunder. 
  

	 	23.	 DISSOLUTION OR LIQUIDATION OF THE COMPANY. 



Upon the dissolution or liquidation of the Company, all Options granted under this Plan which as of such date shall not have
been exercised and all Stock Grants and Stock-Based Awards which have not been accepted, to the extent required under the applicable Agreement, will terminate and become null and void; provided, however, that if the rights of a Participant or a
Participant’s Survivors have not otherwise terminated and expired, the Participant or the Participant’s Survivors will have the right immediately prior to such dissolution or liquidation to exercise or accept any Stock Right to the extent
that the Stock Right is exercisable or subject to acceptance as of the date immediately prior to such dissolution or liquidation. Upon the dissolution or liquidation of the Company, any outstanding Stock-Based Awards shall immediately terminate
unless otherwise determined by the Administrator or specifically provided in the applicable Agreement. 
  

	 	24.	 ADJUSTMENTS. 



Upon the occurrence of any of the following events, a Participant’s rights with respect to any Stock Right granted to him
or her hereunder shall be adjusted as hereinafter provided, unless otherwise specifically provided in a Participant’s Agreement: 

(a)         Stock Dividends and Stock Splits. If (i) the shares of Common
Stock shall be subdivided or combined into a greater or smaller number of shares or if the Company shall issue any shares of Common Stock as a stock dividend on its outstanding Common Stock, or (ii) additional shares or new or different shares
or other securities of the Company or other non-cash assets are distributed with respect to such shares of Common Stock, each Stock Right and the number of shares of Common Stock deliverable thereunder shall be appropriately increased or decreased
proportionately, and appropriate adjustments shall be made including, in the exercise or purchase price per share, to reflect such events. The number of Shares subject to the limitations in Paragraph 3(a) shall also be proportionately adjusted upon
the occurrence of such events. 
 (b)         Corporate Transactions. If the
Company is to be consolidated with or acquired by another entity in a merger, consolidation, or sale of all or substantially all of the Company’s assets other than a transaction to merely change the state of incorporation (a “Corporate
Transaction”), the Administrator or the board of directors of any entity assuming the obligations of the Company hereunder (the “Successor Board”), shall, as to outstanding Options, either (i) make appropriate provision for the
continuation of such Options by substituting on an equitable basis for the Shares then subject to such Options either the consideration payable with respect to the outstanding shares of Common Stock in connection with the Corporate Transaction or
securities of any successor or acquiring entity; or (ii) upon written notice to the Participants, provide that such Options must be exercised (either (A) to the extent then exercisable or, (B) at the discretion of the Administrator,
any such Options being made partially or fully exercisable for purposes of this Subparagraph), within a specified number of days of the date of such notice, at the 

  
 13 








 
end of which period such Options which have not been exercised shall terminate; or (iii) terminate such Options in exchange for payment of an amount equal to the consideration payable upon
consummation of such Corporate Transaction to a holder of the number of shares of Common Stock into which such Option would have been exercisable (either (A) to the extent then exercisable or, (B) at the discretion of the Administrator,
any such Options being made partially or fully exercisable for purposes of this Subparagraph) less the aggregate exercise price thereof. For purposes of determining the payments to be made pursuant to Subclause (iii) above, in the case
of a Corporate Transaction the consideration for which, in whole or in part, is other than cash, the consideration other than cash shall be valued at the fair value thereof as determined in good faith by the Board of Directors. 

Notwithstanding the foregoing, in the event the Corporate Transaction also constitutes a Change of Control, then all Options
outstanding on the date of the Corporate Transaction shall automatically vest in full. 
 With respect to outstanding Stock
Grants, the Administrator or the Successor Board, shall make appropriate provision for the continuation of such Stock Grants on the same terms and conditions by substituting on an equitable basis for the Shares then subject to such Stock Grants
either the consideration payable with respect to the outstanding Shares of Common Stock in connection with the Corporate Transaction or securities of any successor or acquiring entity. In lieu of the foregoing, in connection with any Corporate
Transaction, the Administrator may provide that, upon consummation of the Corporate Transaction, each outstanding Stock Grant shall be terminated in exchange for payment of an amount equal to the consideration payable upon consummation of such
Corporate Transaction to a holder of the number of shares of Common Stock comprising such Stock Grant. 
 Notwithstanding
the foregoing, in the event the Corporate Transaction also constitutes a Change of Control, then all Acquisition Rights with respect to any Stock Grants will terminate and be of no further force and effect. 

In taking any of the actions permitted under this Paragraph 24(b), the Administrator shall not be obligated by the Plan to
treat all Stock Rights, all Stock Rights held by a Participant, or all Stock Rights of the same type, identically. 

(c)         Recapitalization or Reorganization. In the event of a
recapitalization or reorganization of the Company other than a Corporate Transaction pursuant to which securities of the Company or of another corporation are issued with respect to the outstanding shares of Common Stock, a Participant upon
exercising an Option or accepting a Stock Grant after the recapitalization or reorganization shall be entitled to receive for the price paid upon such exercise or acceptance if any, the number of replacement securities which would have been received
if such Option had been exercised or Stock Grant accepted prior to such recapitalization or reorganization. 

(d)         Adjustments to Stock-Based Awards. Upon the happening of any of the
events described in Subparagraphs (a), (b) or (c) above, any outstanding Stock-Based Award shall be appropriately adjusted to reflect the events described in such Subparagraphs. The Administrator or the Successor Board shall determine the
specific adjustments to be made under this Paragraph 24, including, but not limited to the effect of any, Corporate Transaction and Change of Control and, subject to Paragraph 4, its determination shall be conclusive. Notwithstanding the foregoing,
in the event the Corporate Transaction also constitutes a Change of Control, then all Acquisition Rights with respect to any Stock-Based Awards will terminate and be of no further force and effect. 

(e)         Modification of Options. Notwithstanding the foregoing, any
adjustments made pursuant to Subparagraph (a), (b) or (c) above with respect to Options shall be made only after the Administrator determines whether such adjustments would (i) constitute a “modification” of any ISOs (as
that term is defined in Section 424(h) of the Code) or (ii) cause any adverse tax consequences for the holders of Options, including, but not limited to, pursuant to Section 409A of the Code. If the Administrator determines that such
adjustments made with respect to Options would constitute a modification or other adverse tax consequence, it may refrain from making such adjustments, unless the holder of an Option specifically agrees in writing that such adjustment be made and
such writing indicates that the holder has full knowledge of the consequences of such “modification” on his or her income tax treatment with respect to the Option. This paragraph shall not apply to the acceleration of the vesting of any
ISO that would cause any portion of the ISO to violate the annual vesting limitation contained in Section 422(d) of the Code, as described in Paragraph 6(b)(iv). 

  
 14 









	 	25.	 ISSUANCES OF SECURITIES. 



Except as expressly provided herein, 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 or price of shares subject to Stock Rights. Except as expressly provided herein, no adjustments shall be made for
dividends paid in cash or in property (including without limitation, securities) of the Company prior to any issuance of Shares pursuant to a Stock Right. 
  

	 	26.	 FRACTIONAL SHARES. 



No fractional shares shall be issued under the Plan and the person exercising a Stock Right shall receive from the Company
cash in lieu of such fractional shares equal to the Fair Market Value thereof. 
  

	 	27.	 CONVERSION OF ISOs INTO NON-QUALIFIED OPTIONS; TERMINATION OF ISOs. 



The Administrator, at the written request of any Participant, may in its discretion take such actions as may be necessary to
convert such Participant’s ISOs (or any portions thereof) that have not been exercised on the date of conversion into Non-Qualified Options at any time prior to the expiration of such ISOs, regardless of
whether the Participant is an Employee of the Company or an Affiliate at the time of such conversion. At the time of such conversion, the Administrator (with the consent of the Participant) may impose such conditions on the exercise of the resulting
Non-Qualified Options as the Administrator in its discretion may determine, provided that such conditions shall not be inconsistent with this Plan. Nothing in the Plan shall be deemed to give any Participant
the right to have such Participant’s ISOs converted into Non-Qualified Options, and no such conversion shall occur until and unless the Administrator takes appropriate action. The Administrator, with the
consent of the Participant, may also terminate any portion of any ISO that has not been exercised at the time of such conversion. 
  

	 	28.	 WITHHOLDING. 



In the event that any federal, state, or local income taxes, employment taxes, Federal Insurance Contributions Act
(“F.I.C.A.”) withholdings or other amounts are required by applicable law or governmental regulation to be withheld from the Participant’s salary, wages or other remuneration in connection with the issuance of a Stock Right or Shares
under the Plan or for any other reason required by law, the Company may withhold from the Participant’s compensation, if any, or may require that the Participant advance in cash to the Company, or to any Affiliate of the Company which employs
or employed the Participant, the statutory minimum amount of such withholdings unless a different withholding arrangement, including the use of shares of the Company’s Common Stock or a promissory note, is authorized by the Administrator (and
permitted by law). For purposes hereof, the fair market value of the shares withheld for purposes of payroll withholding shall be determined in the manner set forth under the definition of Fair Market Value provided in Paragraph 1 above, as of the
most recent practicable date prior to the date of exercise. If the Fair Market Value of the shares withheld is less than the amount of payroll withholdings required, the Participant may be required to advance the difference in cash to the Company or
the Affiliate employer. The Administrator in its discretion may condition the exercise of an Option for less than the then Fair Market Value on the Participant’s payment of such additional withholding. 

 

	 	29.	 NOTICE TO COMPANY OF DISQUALIFYING DISPOSITION. 



Each Employee who receives an ISO must agree to notify the Company in writing immediately after the Employee makes a
Disqualifying Disposition of any Shares acquired pursuant to the exercise of an ISO. A Disqualifying Disposition is defined in Section 424(c) of the Code and includes any disposition (including any sale or gift) of such Shares before the later
of (a) two years after the date the Employee was granted the ISO, or (b) one year after the date the Employee acquired Shares by exercising the ISO, except as otherwise provided in Section 


  
 15 








 
424(c) of the Code. If the Employee has died before such Shares are sold, these holding period requirements do not apply and no Disqualifying Disposition can occur thereafter. 

 

	 	30.	 EFFECTIVENESS AND TERMINATION OF THE PLAN. 



Except as otherwise provided in Schedule I hereto, the Company shall not issue any Stock Rights under this Plan prior
to the one (1) year anniversary of the Public Company Date. The Plan will terminate on February 12, 2024, the date which is ten years from the earlier of the date of its adoption by the Board of Directors and the date of its
approval by the shareholders of the Company. The Plan may be terminated at an earlier date by vote of the shareholders or the Board of Directors of the Company; provided, however, that any such earlier termination shall not affect any Agreements
executed prior to the effective date of such termination. Termination of the Plan shall not affect any Stock Rights theretofore granted. 
  

	 	31.	 AMENDMENT OF THE PLAN AND AGREEMENTS. 



The Plan may be amended by the shareholders of the Company. The Plan may also be amended by the Administrator, including,
without limitation, to the extent necessary to qualify any or all outstanding Stock Rights granted under the Plan or Stock Rights to be granted under the Plan for favorable federal income tax treatment as may be afforded incentive stock options
under Section 422 of the Code (including deferral of taxation upon exercise), and to the extent necessary to qualify the Shares issuable under the Plan for listing on any national securities exchange or quotation in any national automated
quotation system of securities dealers. Any amendment approved by the Administrator which the Administrator determines is of a scope that requires shareholder approval shall be subject to obtaining such shareholder approval. Any modification or
amendment of the Plan shall not, without the consent of a Participant, adversely affect his or her rights under a Stock Right previously granted to him or her. With the consent of the Participant affected, the Administrator may amend outstanding
Agreements in a manner which may be adverse to the Participant but which is not inconsistent with the Plan. In the discretion of the Administrator, outstanding Agreements may be amended by the Administrator in a manner which is not adverse to the
Participant. 
  

	 	32.	 EMPLOYMENT OR OTHER RELATIONSHIP. 



Nothing in this Plan or any Agreement shall be deemed to prevent the Company or an Affiliate from terminating the employment,
consultancy or director status of a Participant, nor to prevent a Participant from terminating his or her own employment, consultancy or director status or to give any Participant a right to be retained in employment or other service by the Company
or any Affiliate for any period of time. 
  

	 	33.	 GOVERNING LAW. 



This Plan shall be construed and enforced in accordance with the law of the State of Delaware. 

  
 16 








 SCHEDULE I 

CARVE-OUT GRANTS 

The Company may issue the following Stock Grants under the Plan prior to the one (1) year anniversary of the Public
Company Date at the exercise price and with the vesting terms as set forth below: 
  

	 	1.	 One-time initial equity grants to new non-employee directors of the Company of Options to purchase up to 11,116 Shares each at an exercise price
equal to the greater of (i) $4.48 per share, and (ii) the Fair Market Value of the Common Stock as of the date of grant of such Options, fully vested immediately upon issuance. 



	 	2.	 Annual equity grants to non-employee directors of Options to purchase up to 6,948 Shares, subject to the vesting schedule outlined in
Section 6(a)(vi) of the Plan. 



	 	3.	 One-time initial equity grant to a new Chief Financial Officer of the Company of Options to purchase up to 19,454 Shares, subject to the vesting
schedule outlined in Section 6(a)(vi) of the Plan. 



	 	4.	 Option grants made in the ordinary course of business to non-director employees, excluding the Chief Financial Officer and the Vice President of
Pharmaceutical Development and Operations of the Company, not to exceed 13,896 Shares in the aggregate or 1,390 Shares per employee (as may be adjusted in accordance with Section 24 of the Plan), subject to the vesting schedule outlined in
Section 6(a)(vi) of the Plan. 



	 	5.	 One-time initial equity grant to a new Vice President of Pharmaceutical Development and Operations of the Company of Options to purchase up to
13,896 Shares (as may be adjusted in accordance with Section 24 of the Plan) at an exercise price equal to the greater of (i) $4.48 per share, and (ii) the Fair Market Value of the Common Stock as of the date of grant of such Options,
subject to the vesting schedule outlined in Section 6(a)(vi) of the Plan. 



  
 17 








 Option No.             

MABVAX THERAPEUTICS HOLDINGS, INC. 

Stock Option Grant Notice 

Stock Option Grant under the 

Amended and Restated MabVax Therapeutics Holdings, Inc. 

2014 Employee, Director and Consultant Equity Incentive Plan 
  

					
	1.	  	Name and Address of Participant:	  	                                     
                                         
  
		  		  	                                     
                                         
  
		  		  	                                     
                                         
  
			
	2.	  	Date of Option Grant:	  	                                     
                                         
  
			
	3.	  	Type of Grant:	  	                                     
                                   
			
	4.	  	Maximum Number of Shares for which this Option is exercisable:	  	                                     
                                         
  
			
	5.	  	Exercise (purchase) price per share:	  	                                     
                                   
			
	6.	  	Option Expiration Date:	  	                                     
                                   
			
	7.	  	Vesting Start Date:	  	
		
	8.	  	Vesting Schedule: This Option shall become exercisable (and the Shares issued upon exercise shall be vested) as follows provided the Participant is an Employee, director or Consultant of the Company or of an Affiliate on
the applicable vesting date:
		
		  	The Participant shall acquire a vested interest in the Option Shares as follows: (i) twenty-five percent (25%) of the Option shares shall vest upon the one (1) year anniversary of the Vesting Start Date
and (ii) the balance of the Option Shares shall vest in a series a thirty-six (36) successive equal monthly installments upon completion of each additional month of service for the Company measured from the first anniversary of the Vesting
Start Date, provided that the Participant is an employee, consultant or director of the Company, its successor or a subsidiary of the Company as of each such vesting date.
		
		  	The foregoing rights are cumulative and are subject to the other terms and conditions of this Agreement and the Plan.


  
 1 








 The Company and the Participant acknowledge receipt of this Stock Option Grant Notice and agree to the terms of
the Stock Option Agreement attached hereto and incorporated by reference herein, the Amended and Restated MabVax Therapeutics Holdings, Inc. 2014 Employee, Director and Consultant Equity Incentive Plan and the terms of this Option Grant as set forth
above. 
  

			
	MABVAX THERAPEUTICS HOLDINGS, INC.
		
	By:	 	  

		
	Name:	 	  

		
	Title:	 	  

	
	  

	Participant



  
 2 








 MABVAX THERAPEUTICS HOLDINGS, INC. 

STOCK OPTION AGREEMENT - INCORPORATED TERMS AND CONDITIONS 

AGREEMENT made as of the date of grant set forth in the Stock Option Grant Notice by and between MabVax Therapeutics Holdings,
Inc. (the “Company”), a Delaware corporation, and the individual whose name appears on the Stock Option Grant Notice (the “Participant”). 

WHEREAS, the Company desires to grant to the Participant an Option to purchase shares of its common stock, $0.01 par value per
share (the “Shares”), under and for the purposes set forth in the Amended and Restated MabVax Therapeutics Holdings, Inc. 2014 Employee, Director and Consultant Equity Incentive Plan (the “Plan”); 

WHEREAS, the Company and the Participant understand and agree that any terms used and not defined herein have the same
meanings as in the Plan; and 
 WHEREAS, the Company and the Participant each intend that the Option granted herein shall be
of the type set forth in the Stock Option Grant Notice. 
 NOW, THEREFORE, in consideration of the mutual covenants
hereinafter set forth and for other good and valuable consideration, the parties hereto agree as follows: 
  

	 	1.	 GRANT OF OPTION. 



The Company hereby grants to the Participant the right and option to purchase all or any part of an aggregate of the number
of Shares set forth in the Stock Option Grant Notice, on the terms and conditions and subject to all the limitations set forth herein, under United States securities and tax laws, and in the Plan, which is incorporated herein by reference. The
Participant acknowledges receipt of a copy of the Plan. 
  

	 	2.	 EXERCISE PRICE. 



The exercise price of the Shares covered by the Option shall be the amount per Share set forth in the Stock Option Grant
Notice, subject to adjustment, as provided in the Plan, in the event of a stock split, reverse stock split or other events affecting the holders of Shares after the date hereof (the “Exercise Price”). Payment shall be made in accordance
with Paragraph 9 of the Plan. 
  

	 	3.	 EXERCISABILITY OF OPTION. 



Subject to the terms and conditions set forth in this Agreement and the Plan, the Option granted hereby shall become vested
and exercisable as set forth in the Stock Option Grant Notice and is subject to the other terms and conditions of this Agreement and the Plan. 
  

	 	4.	 TERM OF OPTION. 



This Option shall terminate on the Option Expiration Date as specified in the Stock Option Grant Notice and, if this Option
is designated in the Stock Option Grant Notice as an ISO and the Participant owns as of the date hereof more than 10% of the total combined voting power of all classes of capital stock of the Company or an Affiliate, such date may not be more than
five years from the date of this Agreement, but shall be subject to earlier termination as provided herein or in the Plan. 

If the Participant ceases to be an Employee, director or Consultant of the Company or of an Affiliate for any reason other
than the death or Disability of the Participant, or termination of the Participant for Cause (the “Termination Date”), the Option to the extent then vested and exercisable pursuant to Section 3 hereof as of the Termination Date, and
not previously terminated in accordance with this Agreement, may be exercised within thirty (30) days after the Termination Date, or on or prior to the Option Expiration Date as specified in the Stock Option Grant Notice, whichever is earlier,
but may not be exercised thereafter except as set forth below. In such 

  
 1 








 
event, the unvested portion of the Option shall not be exercisable and shall expire and be cancelled on the Termination Date. 

If this Option is designated in the Stock Option Grant Notice as an ISO and the Participant ceases to be an Employee of the
Company or of an Affiliate but continues after termination of employment to provide service to the Company or an Affiliate as a director or Consultant, this Option shall continue to vest in accordance with Section 3 above as if this Option had
not terminated until the Participant is no longer providing services to the Company. In such case, this Option shall automatically convert and be deemed a Non-Qualified Option as of the date that is three months from termination of the
Participant’s employment and this Option shall continue on the same terms and conditions set forth herein until such Participant is no longer providing service to the Company or an Affiliate. 

Notwithstanding the foregoing, in the event of the Participant’s Disability or death within three months after the
Termination Date, the Participant or the Participant’s Survivors may exercise the Option within one year after the Termination Date, but in no event after the Option Expiration Date as specified in the Stock Option Grant Notice. 

In the event the Participant’s service is terminated by the Company or an Affiliate for Cause, the Participant’s
right to exercise any unexercised portion of this Option even if vested shall cease immediately as of the time the Participant is notified his or her service is terminated for Cause, and this Option shall thereupon terminate. Notwithstanding
anything herein to the contrary, if subsequent to the Participant’s termination, but prior to the exercise of the Option, the Administrator determines that, either prior or subsequent to the Participant’s termination, the Participant
engaged in conduct which would constitute Cause, then the Participant shall immediately cease to have any right to exercise the Option and this Option shall thereupon terminate. 

In the event of the Disability of the Participant, as determined in accordance with the Plan, the Option shall be exercisable
within one year after the Participant’s termination of service due to Disability or, if earlier, on or prior to the Option Expiration Date as specified in the Stock Option Grant Notice. In such event, the Option shall be exercisable: 

 

	 	(a)	 to the extent that the Option has become exercisable but has not been exercised as of the date of the Participant’s termination of service due
to Disability; and 


  

	 	(b)	 in the event rights to exercise the Option accrue periodically, to the extent of a pro rata portion through the date of the Participant’s
termination of service due to Disability of any additional vesting rights that would have accrued on the next vesting date had the Participant not become Disabled. The proration shall be based upon the number of days accrued in the current vesting
period prior to the date of the Participant’s termination of service due to Disability. 


 In the
event of the death of the Participant while an Employee, director or Consultant of the Company or of an Affiliate, the Option shall be exercisable by the Participant’s Survivors within one year after the date of death of the Participant or, if
earlier, on or prior to the Option Expiration Date as specified in the Stock Option Grant Notice. In such event, the Option shall be exercisable: 
  

	 	(x)	 to the extent that the Option has become exercisable but has not been exercised as of the date of death; and 



 

	 	(y)	 in the event rights to exercise the Option accrue periodically, to the extent of a pro rata portion through the date of death of any additional
vesting rights that would have accrued on the next vesting date had the Participant not died. The proration shall be based upon the number of days accrued in the current vesting period prior to the Participant’s date of death.



  

	 	5.	 METHOD OF EXERCISING OPTION. 



  
 2 








 Subject to the terms and conditions of this Agreement, the Option may be
exercised by written notice to the Company or its designee, in substantially the form of Exhibit A attached hereto (or in such other form acceptable to the Company, which may include electronic notice). Such notice shall state the number
of Shares with respect to which the Option is being exercised and shall be signed by the person exercising the Option (which signature may be provided electronically in a form acceptable to the Company). Payment of the Exercise Price for such Shares
shall be made in accordance with Paragraph 9 of the Plan. The Company shall deliver such Shares as soon as practicable after the notice shall be received, provided, however, that the Company may delay issuance of such Shares until completion of any
action or obtaining of any consent, which the Company deems necessary under any applicable law (including, without limitation, state securities or “blue sky” laws). The Shares as to which the Option shall have been so exercised shall be
registered in the Company’s share register in the name of the person so exercising the Option (or, if the Option shall be exercised by the Participant and if the Participant shall so request in the notice exercising the Option, shall be
registered in the Company’s share register in the name of the Participant and another person jointly, with right of survivorship) and shall be delivered as provided above to or upon the written order of the person exercising the Option. In the
event the Option shall be exercised, pursuant to Section 4 hereof, by any person other than the Participant, such notice shall be accompanied by appropriate proof of the right of such person to exercise the Option. All Shares that shall be
purchased upon the exercise of the Option as provided herein shall be fully paid and nonassessable. 
  

	 	6.	 PARTIAL EXERCISE. 



Exercise of this Option to the extent above stated may be made in part at any time and from time to time within the above
limits, except that no fractional share shall be issued pursuant to this Option. 
  

	 	7.	 NON-ASSIGNABILITY. 



The Option shall not be transferable by the Participant otherwise than by will or by the laws of descent and distribution. If
this Option is a Non-Qualified Option then it may also be transferred pursuant to a qualified domestic relations order as defined by the Code or Title I of the Employee Retirement Income Security Act or the rules thereunder and the Participant, with
the approval of the Administrator, may transfer the Option for no consideration to or for the benefit of the Participant’s Immediate Family (including, without limitation, to a trust for the benefit of the Participant’s Immediate Family or
to a partnership or limited liability company for one or more members of the Participant’s Immediate Family), subject to such limits as the Administrator may establish, and the transferee shall remain subject to all the terms and conditions
applicable to the Option prior to such transfer and each such transferee shall so acknowledge in writing as a condition precedent to the effectiveness of such transfer. The term “Immediate Family” shall mean the Participant’s spouse,
former spouse, parents, children, stepchildren, adoptive relationships, sisters, brothers, nieces, nephews and grandchildren (and, for this purpose, shall also include the Participant). Except as provided above in this paragraph, the Option shall be
exercisable, during the Participant’s lifetime, only by the Participant (or, in the event of legal incapacity or incompetency, by the Participant’s guardian or representative) and shall not be assigned, pledged or hypothecated in any way
(whether by operation of law or otherwise) and shall not be subject to execution, attachment or similar process. Any attempted transfer, assignment, pledge, hypothecation or other disposition of the Option or of any rights granted hereunder contrary
to the provisions of this Section 7, or the levy of any attachment or similar process upon the Option shall be null and void. 
  

	 	8.	 NO RIGHTS AS STOCKHOLDER UNTIL EXERCISE. 



The Participant shall have no rights as a stockholder with respect to Shares subject to this Agreement until registration of
the Shares in the Company’s share register in the name of the Participant. Except as is expressly provided in the Plan with respect to certain changes in the capitalization of the Company, no adjustment shall be made for dividends or similar
rights for which the record date is prior to the date of such registration. 
  

	 	9.	 ADJUSTMENTS. 



The Plan contains provisions covering the treatment of Options in a number of contingencies such as stock splits and mergers.
Provisions in the Plan for adjustment with respect to stock subject to Options and the related provisions with respect to successors to the business of the Company are hereby made applicable hereunder


  
 3 








 
and are incorporated herein by reference, including, but not limited to, the acceleration of vesting provision contained in Paragraph 24 of the Plan. 

 

	 	10.	 TAXES. 



The Participant acknowledges that any income or other taxes due from him or her with respect to this Option or the Shares
issuable pursuant to this Option shall be the Participant’s responsibility. The Participant acknowledges and agrees that (i) the Participant was free to use professional advisors of his or her choice in connection with this Agreement, has
received advice from his or her professional advisors in connection with this Agreement, understands its meaning and import, and is entering into this Agreement freely and without coercion or duress; (ii) the Participant has not received and is
not relying upon any advice, representations or assurances made by or on behalf of the Company or any Affiliate or any employee of or counsel to the Company or any Affiliate regarding any tax or other effects or implications of the Option, the
Shares or other matters contemplated by this Agreement; and (iii) neither the Administrator, the Company, its Affiliates, nor any of its officers or directors, shall be held liable for any applicable costs, taxes, or penalties associated with
the Option if, in fact, the Internal Revenue Service were to determine that the Option constitutes deferred compensation under Section 409A of the Code. 

If this Option is designated in the Stock Option Grant Notice as a Non-Qualified Option or if the Option is an ISO and is
converted into a Non-Qualified Option and such Non-Qualified Option is exercised, the Participant agrees that the Company may withhold from the Participant’s remuneration, if any, the minimum statutory amount of federal, state and local
withholding taxes attributable to such amount that is considered compensation includable in such person’s gross income. At the Company’s discretion, the amount required to be withheld may be withheld in cash from such remuneration, or in
kind from the Shares otherwise deliverable to the Participant on exercise of the Option. The Participant further agrees that, if the Company does not withhold an amount from the Participant’s remuneration sufficient to satisfy the
Company’s income tax withholding obligation, the Participant will reimburse the Company on demand, in cash, for the amount under-withheld. 
  

	 	11.	 PURCHASE FOR INVESTMENT. 



Unless the offering and sale of the Shares to be issued upon the particular exercise of the Option shall have been
effectively registered under the Securities Act, the Company shall be under no obligation to issue the Shares covered by such exercise unless the Company has determined that such exercise and issuance would be exempt from the registration
requirements of the Securities Act and until the following conditions have been fulfilled: 
  

	 	(a)	 The person(s) who exercise the Option shall warrant to the Company, at the time of such exercise, that such person(s) are acquiring such Shares for
their own respective accounts, for investment, and not with a view to, or for sale in connection with, the distribution of any such Shares, in which event the person(s) acquiring such Shares shall be bound by the provisions of the following legend
which shall be endorsed upon any certificate(s) evidencing the Shares issued pursuant to such exercise: 



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

(b) If the Company so requires, the Company shall have received an opinion of its counsel that the Shares may be issued upon
such particular exercise in compliance with the Securities Act without registration thereunder. Without limiting the generality of the foregoing, the Company may delay issuance of the Shares until completion of any action or obtaining of any
consent, which the Company deems necessary under any applicable law (including without limitation state securities or “blue sky” laws). 

  
 4 









	 	12.	 RESTRICTIONS ON TRANSFER OF SHARES. 



12.1         The Participant agrees that in the event the Company proposes to offer
for sale to the public any of its equity securities and such Participant is requested by the Company and any underwriter engaged by the Company in connection with such offering to sign an agreement restricting the sale or other transfer of Shares,
then it will promptly sign such agreement and will not transfer, whether in privately negotiated transactions or to the public in open market transactions or otherwise, any Shares or other securities of the Company held by him or her during such
period as is determined by the Company and the underwriters, not to exceed 180 days following the closing of the offering, plus such additional period of time as may be required to comply with Marketplace Rule 2711 of the National Association of
Securities Dealers, Inc. or similar rules thereto (such period, the “Lock-Up Period”). Such agreement shall be in writing and in form and substance reasonably satisfactory to the Company and such underwriter and pursuant to customary and
prevailing terms and conditions. Notwithstanding whether the Participant has signed such an agreement, the Company may impose stop-transfer instructions with respect to the Shares or other securities of the Company subject to the foregoing
restrictions until the end of the Lock-Up Period. 
 12.2         The Participant
acknowledges and agrees that neither the Company, its shareholders nor its directors and officers, has any duty or obligation to disclose to the Participant any material information regarding the business of the Company or affecting the value of the
Shares before, at the time of, or following a termination of the service of the Participant by the Company, including, without limitation, any information concerning plans for the Company to make a public offering of its securities or to be acquired
by or merged with or into another firm or entity. 
  

	 	13.	 NO OBLIGATION TO MAINTAIN RELATIONSHIP. 



The Participant acknowledges that: (i) the Company is not by the Plan or this Option obligated to continue the
Participant as an employee, director or Consultant of the Company or an Affiliate; (ii) the Plan is discretionary in nature and may be suspended or terminated by the Company at any time; (iii) the grant of the Option is a one-time benefit
which does not create any contractual or other right to receive future grants of options, or benefits in lieu of options; (iv) all determinations with respect to any such future grants, including, but not limited to, the times when options
shall be granted, the number of shares subject to each option, the option price, and the time or times when each option shall be exercisable, will be at the sole discretion of the Company; (v) the Participant’s participation in the Plan is
voluntary; (vi) the value of the Option is an extraordinary item of compensation which is outside the scope of the Participant’s employment or consulting contract, if any; and (vii) the Option is not part of normal or expected
compensation for purposes of calculating any severance, resignation, redundancy, end of service payments, bonuses, long-service awards, pension or retirement benefits or similar payments. 

 

	 	14.	 IF OPTION IS INTENDED TO BE AN ISO. 



If this Option is designated in the Stock Option Grant Notice as an ISO so that the Participant (or the Participant’s
Survivors) may qualify for the favorable tax treatment provided to holders of Options that meet the standards of Section 422 of the Code then any provision of this Agreement or the Plan which conflicts with the Code so that this Option would
not be deemed an ISO is null and void and any ambiguities shall be resolved so that the Option qualifies as an ISO. The Participant should consult with the Participant’s own tax advisors regarding the tax effects of the Option and the
requirements necessary to obtain favorable tax treatment under Section 422 of the Code, including, but not limited to, holding period requirements. 

Notwithstanding the foregoing, to the extent that the Option is designated in the Stock Option Grant Notice as an ISO and is
not deemed to be an ISO pursuant to Section 422(d) of the Code because the aggregate Fair Market Value (determined as of the Date of Option Grant) of any of the Shares with respect to which this ISO is granted becomes exercisable for the first
time during any calendar year in excess of $100,000, the portion of the Option representing such excess value shall be treated as a Non-Qualified Option and the Participant shall be deemed to have taxable income measured by the difference between
the then Fair Market Value of the Shares received upon exercise and the price paid for such Shares pursuant to this Agreement. 

  
 5 








 Neither the Company nor any Affiliate shall have any liability to the
Participant, or any other party, if the Option (or any part thereof) that is intended to be an ISO is not an ISO or for any action taken by the Administrator, including without limitation the conversion of an ISO to a Non-Qualified Option. 

 

	 	15.	 NOTICE TO COMPANY OF DISQUALIFYING DISPOSITION OF AN ISO. 



If this Option is designated in the Stock Option Grant Notice as an ISO then the Participant agrees to notify the Company in
writing immediately after the Participant makes a Disqualifying Disposition of any of the Shares acquired pursuant to the exercise of the ISO. A Disqualifying Disposition is defined in Section 424(c) of the Code and includes any disposition
(including any sale) of such Shares before the later of (a) two years after the date the Participant was granted the ISO or (b) one year after the date the Participant acquired Shares by exercising the ISO, except as otherwise provided in
Section 424(c) of the Code. If the Participant has died before the Shares are sold, these holding period requirements do not apply and no Disqualifying Disposition can occur thereafter. 

 

	 	16.	 NOTICES. 



Any notices required or permitted by the terms of this Agreement or the Plan shall be given by recognized courier service,
facsimile, registered or certified mail, return receipt requested, addressed as follows: 
 If to the Company: 

MabVax Therapeutics Holdings, Inc. 

11588 Sorrento Valley Road, Suite 20 

San Diego, California 92121 
 If
to the Participant at the address set forth on the Stock Option Grant Notice 
 or to such other address or addresses of which notice in the same manner has
previously been given. Any such notice shall be deemed to have been given upon the earlier of receipt, one business day following delivery to a recognized courier service or three business days following mailing by registered or certified mail. 

 

	 	17.	 GOVERNING LAW. 



This Agreement shall be governed by and construed in accordance with the laws of the Delaware, without giving effect to the
conflict of law principles thereof. For the purpose of litigating any dispute that arises under this Agreement, the parties hereby consent to exclusive jurisdiction in California and agree that such litigation shall be conducted in the state courts
of San Diego County, California or the federal courts of the United States for the Southern District of California. 
  

	 	18.	 BENEFIT OF AGREEMENT. 



Subject to the provisions of the Plan and the other provisions hereof, this Agreement shall be for the benefit of and shall
be binding upon the heirs, executors, administrators, successors and assigns of the parties hereto. 
  

	 	19.	 ENTIRE AGREEMENT. 



This Agreement, together with the Plan, embodies the entire agreement and understanding between the parties hereto with
respect to the subject matter hereof and supersedes all prior oral or written agreements and understandings relating to the subject matter hereof. No statement, representation, warranty, covenant or agreement not expressly set forth in this
Agreement shall affect or be used to interpret, change or restrict, the express terms and provisions of this Agreement, provided, however, in any event, this Agreement shall be subject to and governed by the Plan. 

 

	 	20.	 MODIFICATIONS AND AMENDMENTS. 


  

  
 6 








 The terms and provisions of this Agreement may be modified or amended as
provided in the Plan. 
  

	 	21.	 WAIVERS AND CONSENTS. 



Except as provided in the Plan, the terms and provisions of this Agreement may be waived, or consent for the departure
therefrom granted, only by written document executed by the party entitled to the benefits of such terms or provisions. No such waiver or consent shall be deemed to be or shall constitute a waiver or consent with respect to any other terms or
provisions of this Agreement, whether or not similar. Each such waiver or consent shall be effective only in the specific instance and for the purpose for which it was given, and shall not constitute a continuing waiver or consent. 

 

	 	22.	 DATA PRIVACY. 



By entering into this Agreement, the Participant: (i) authorizes the Company and each Affiliate, and any agent of the
Company or any Affiliate administering the Plan or providing Plan recordkeeping services, to disclose to the Company or any of its Affiliates such information and data as the Company or any such Affiliate shall request in order to facilitate the
grant of options and the administration of the Plan; and (ii) authorizes the Company and each Affiliate to store and transmit such information in electronic form for the purposes set forth in this Agreement. 

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK] 

  
 7 








 Exhibit A 

NOTICE OF EXERCISE OF STOCK OPTION 
  

	To:	 MabVax Therapeutics Holdings, Inc. 



Ladies and Gentlemen: 
 I hereby
exercise my Stock Option to purchase                  shares (the “Shares”) of the common stock, $0.01 par value, of MabVax Therapeutics Holdings,
Inc. (the “Company”), at the exercise price of $             per share, pursuant to and subject to the terms of that Stock Option Grant Notice dated
                    , 20    . 

I am aware that the Shares have not been registered under the Securities Act of 1933, as amended (the “1933 Act”),
or any state securities laws. I understand that the reliance by the Company on exemptions under the 1933 Act is predicated in part upon the truth and accuracy of the statements by me in this Notice of Exercise. 

I hereby represent and warrant that (1) I have been furnished with all information which I deem necessary to evaluate the
merits and risks of the purchase of the Shares; (2) I have had the opportunity to ask questions concerning the Shares and the Company and all questions posed have been answered to my satisfaction; (3) I have been given the opportunity to
obtain any additional information I deem necessary to verify the accuracy of any information obtained concerning the Shares and the Company; and (4) I have such knowledge and experience in financial and business matters that I am able to
evaluate the merits and risks of purchasing the Shares and to make an informed investment decision relating thereto. 
 I
hereby represent and warrant that I am purchasing the Shares for my own personal account for investment and not with a view to the sale or distribution of all or any part of the Shares. 

I understand that because the Shares have not been registered under the 1933 Act, I must continue to bear the economic risk of
the investment for an indefinite time and the Shares cannot be sold unless the Shares are subsequently registered under applicable federal and state securities laws or an exemption from such registration requirements is available. 

I agree that I will in no event sell or distribute or otherwise dispose of all or any part of the Shares unless (1) there
is an effective registration statement under the 1933 Act and applicable state securities laws covering any such transaction involving the Shares or (2) the Company receives an opinion of my legal counsel (concurred in by legal counsel for the
Company) stating that such transaction is exempt from registration or the Company otherwise satisfies itself that such transaction is exempt from registration. 

I consent to the placing of a legend on my certificate for the Shares stating that the Shares have not been registered and
setting forth the restriction on transfer contemplated hereby and to the placing of a stop transfer order on the books of the Company and with any transfer agents against the Shares until the Shares may be legally resold or distributed without
restriction. 
 I understand that at the present time Rule 144 of the Securities and Exchange Commission (the
“SEC”) may not be relied on for the resale or distribution of the Shares by me. I understand that the Company has no obligation to me to register the sale of the Shares with the SEC and has not represented to me that it will register the
sale of the Shares. 
 I understand the terms and restrictions on the right to dispose of the Shares set forth in the
Amended and Restated MabVax Therapeutics Holdings, Inc. 2014 Employee, Director and Consultant Equity Incentive Plan and the Stock Option Agreement, both of which I have carefully reviewed. I consent to the placing of a legend on my certificate for
the Shares referring to such restriction and the placing of stop transfer orders until the Shares may be transferred in accordance with the terms of such restrictions. 

  
 Exhibit A-1 








 I have considered the Federal, state and local income tax implications of the
exercise of my Option and the purchase and subsequent sale of the Shares. 
 I am paying the option exercise price for the
Shares as follows: 
  

	
	  



Please issue the Shares (check one): 

 ̈ to me; or 

 ̈ to me and
                            , as joint tenants with right of survivorship 

and mail the certificate to me at the following address: 
  

			
	  

	  

	  


 My mailing address for shareholder communications, if different from the address listed above
is: 
  

			
	  

	  

	  


  

			
	Very truly yours,
	
	  

	Participant (signature)
	
	  

	 Print Name

	
	  

	 Date

	
	  

	 Social Security Number




  
 Exhibit A-2 








 RESTRICTED STOCK AGREEMENT 

MABVAX THERAPEUTICS HOLDINGS, INC. 

AGREEMENT made as of the [    ] day of
[                ], 20[    ] (the “Grant Date”), between MabVax Therapeutics Holdings, Inc. (the “Company”), a
Delaware corporation, and [                        ] (the “Participant”). 

WHEREAS, the Company has adopted the Amended and Restated MabVax Therapeutics Holdings, Inc. 2014 Employee, Director and
Consultant Equity Incentive Plan (the “Plan”) to promote the interests of the Company by providing an incentive for Employees, directors and Consultants of the Company or its Affiliates; 

WHEREAS, pursuant to the provisions of the Plan, the Company desires to offer to the Participant shares of the Company’s
common stock, $0.001 par value per share (“Common Stock”), in accordance with the provisions of the Plan, all on the terms and conditions hereinafter set forth; 

WHEREAS, the Participant wishes to accept said offer; and 

WHEREAS, the parties hereto understand and agree that any terms used and not defined herein have the meanings ascribed to such
terms in the Plan. 
 NOW, THEREFORE, in consideration of the premises and the mutual covenants contained herein and for
other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto hereby agree as follows: 

1.            Terms of Grant. The Participant hereby
accepts the offer of the Company to issue to the Participant, in accordance with the terms of the Plan and this Agreement, [                
(        )] shares of the Company’s Common Stock (such shares, subject to adjustment pursuant to Section 24 of the Plan and Subsection 2.1(g) hereof, the “Granted Shares”) at a per
share purchase price of $[    ] (the “Purchase Price”), receipt of which is hereby acknowledged by the Company [by the Participant’s prior service to the Company and which amount will be reported as
income on the Participant’s W-2 [or 1099] for this calendar year]. 

2.1.          Lapsing Forfeiture Right. 

(a)            Lapsing Forfeiture Right. Except as set
forth in Subsections 2.1(b) and 2.1(c) hereof, in the event that for any reason the Participant is no longer an Employee, director or Consultant of the Company or an Affiliate (the “Termination”) prior to the fourth anniversary of
the Grant Date, the Participant (or the Participant’s Survivor) shall, on the date of Termination, immediately forfeit to the Company (or its designee) all of the Granted Shares which have not yet vested in accordance with the schedule set
forth below (the “Lapsing Forfeiture Right”). 
  

	 	  	 The Company’s Lapsing Forfeiture Right is as follows: 



(i)         If the Participant’s Termination is prior to the
first anniversary of the Grant Date, all of the Granted Shares shall be forfeited to the Company. 

(ii)         If the Participant’s Termination takes place after
the first anniversary of the Grant Date, the number of the Granted Shares forfeited shall be seventy-five percent (75%) of the Granted Shares less one-forty eighth (1/48th) of the Granted Shares for each full month elapsed after the first
anniversary of the Grant Date (rounded up to the next highest whole number of shares) until all of the Granted Shares are no longer subject to the Lapsing Forfeiture Right. 

(b)             Effect of Termination for Disability or upon
Death. The following rules apply to the Company’s Lapsing Forfeiture Right if the Participant’s Termination is by reason of Disability or death: to the extent the Company’s Lapsing Forfeiture Right has not lapsed as of the date of
Termination due to Disability or death, as the case may be, the Participant shall forfeit to the Company any or all of the Granted Shares subject to such Lapsing 

  








 
Forfeiture Right; provided, however, that the Company’s Lapsing Forfeiture Right shall be deemed to have lapsed to the extent of a pro rata portion of the Granted Shares through the date of
Termination due to Disability or death, as would have lapsed had the Participant not been terminated due to Disability or death, as the case may be. The proration shall be based upon the number of days accrued in such current vesting period prior to
the Participant’s date of Termination due to Disability or death, as the case may be. In the case of death all Granted Shares which are no longer subject to the Company’s Lapsing Forfeiture Right shall be issued to the Participant’s
Survivor. 
 (c)         Effect of a For Cause Termination. Notwithstanding
anything to the contrary contained in this Agreement, in the event of the Participant’s Termination for Cause or in the event the Administrator determines, within one year after the Participant’s Termination, that either prior or
subsequent to the Participant’s Termination the Participant engaged in conduct that would constitute Cause, all of the Granted Shares then held by the Participant shall be forfeited to the Company immediately as of the time the Participant is
notified that he or she has been terminated for Cause or that he or she engaged in conduct which would constitute Cause. 

(d)         Escrow. The Granted Shares issued to the Participant hereunder
which from time to time are subject to the Lapsing Forfeiture Right shall be held in escrow by the Company as provided in this Subsection 2.1(d). Promptly following receipt by the Company of a written request from the Participant, the Company
shall release from escrow and deliver to the Participant the Granted Shares, if any, as to which the Company’s Lapsing Forfeiture Right has lapsed. In the event of forfeiture to the Company of Granted Shares subject to the Lapsing Forfeiture
Right, the Company shall release from escrow and cancel the number of Granted Shares so forfeited. Any cash or securities distributed in respect of the Granted Shares held in escrow, including, without limitation, ordinary cash dividends or shares
issued as a result of stock splits, stock dividends or other recapitalizations (“Retained Distributions”), shall also be held in escrow in the same manner as the Granted Shares and all Retained Distributions shall be forfeited to the
Company or released from escrow and delivered to the Participant, as the case may be, at such time and in such manner as the Granted Shares to which such Retained Distributions so relate. All ordinary cash dividends retained hereunder shall, during
the period in which such dividends are retained by the Company, be deposited into an account at a financial institution selected by the Company, which shall not be required to bear interest or be segregated in a separate account. 

(e)         Prohibition on Transfer. The Participant recognizes and agrees that
all Granted Shares and Retained Distributions which are subject to the Lapsing Forfeiture Right may not be sold, transferred, assigned, hypothecated, pledged, encumbered or otherwise disposed of, whether voluntarily or by operation of law, other
than to the Company (or its designee). However, the Participant, with the approval of the Administrator, may transfer the Granted Shares and Retained Distributions for no consideration to or for the benefit of the Participant’s Immediate Family
(including, without limitation, to a trust for the benefit of the Participant’s Immediate Family or to a partnership or limited liability company for one or more members of the Participant’s Immediate Family), subject to such limits as the
Administrator may establish, and the transferee shall remain subject to all the terms and conditions applicable to this Agreement prior to such transfer and each such transferee shall so acknowledge in writing as a condition precedent to the
effectiveness of such transfer. The term “Immediate Family” shall mean the Participant’s spouse, former spouse, parents, children, stepchildren, adoptive relationships, sisters, brothers, nieces and nephews and grandchildren (and, for
this purpose, shall also include the Participant. The Company shall not be required to transfer any Granted Shares or Retained Distributions on its books which shall have been sold, assigned or otherwise transferred in violation of this Subsection
2.1(e), or to treat as the owner of such Granted Shares or Retained Distributions, or to accord the right to vote as such owner or to pay dividends to, any person or organization to which any such Granted Shares or Retained Distributions shall have
been so sold, assigned or otherwise transferred, in violation of this Subsection 2.1(e). 

(f)         Failure to Deliver Granted Shares to be Forfeited. In the event
that the Granted Shares to be forfeited to the Company under this Agreement are not in the Company’s possession pursuant to Subsection 2.1(d) above or otherwise and the Participant or the Participant’s Survivor fails to deliver such
Granted Shares to the Company (or its designee), the Company may immediately take such action as is appropriate to transfer record title of such Granted Shares from the Participant to the Company (or its designee) and to treat the Participant and
such Granted Shares in all respects as if delivery of such Granted Shares had been made as required by this Agreement. The Participant hereby irrevocably grants the Company a power of attorney which shall be coupled with an interest for the purpose
of effectuating the preceding sentence. 

  
 4 








 (g)         Adjustments. The Plan
contains provisions covering the treatment of Shares in a number of contingencies such as stock splits and mergers. Provisions in the Plan for adjustment with respect to the Shares and the related provisions with respect to successors to the
business of the Company are hereby made applicable hereunder and are incorporated herein by reference. 

3.         Purchase for Investment; Securities Law Compliance. The Participant
hereby represents and warrants that he or she is acquiring the Granted Shares for his or her own account, for investment, and not with a view to, or for sale in connection with, the distribution of any such Granted Shares. The Participant
specifically acknowledges and agrees that any sales of Granted Shares shall be made in accordance with the requirements of the Securities Act, in a transaction as to which the Company shall have received an opinion of counsel satisfactory to it
confirming such compliance. The Participant shall be bound by the provisions of the following legend which shall be endorsed upon the certificate(s) evidencing the Granted Shares: 

“THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE BEEN TAKEN FOR INVESTMENT AND THEY MAY NOT BE SOLD OR OTHERWISE
TRANSFERRED BY ANY PERSON, INCLUDING A PLEDGEE, UNLESS (1) EITHER (A) A REGISTRATION STATEMENT WITH RESPECT TO SUCH SHARES SHALL BE EFFECTIVE UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR (B) THE COMPANY SHALL HAVE RECEIVED AN
OPINION OF COUNSEL SATISFACTORY TO IT THAT AN EXEMPTION FROM REGISTRATION UNDER SUCH ACT IS THEN AVAILABLE, AND (2) THERE SHALL HAVE BEEN COMPLIANCE WITH ALL APPLICABLE STATE SECURITIES LAWS.” 

4.         Legend. In addition to any legend required pursuant to the Plan, all
certificates representing the Granted Shares issued to the Participant pursuant to this Agreement shall have endorsed thereon a legend substantially as follows: 

“THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO RESTRICTIONS SET FORTH IN A RESTRICTED STOCK AGREEMENT DATED
AS OF [                    ], 20[    ] WITH THIS COMPANY, A COPY OF WHICH AGREEMENT IS AVAILABLE FOR
INSPECTION AT THE OFFICES OF THE COMPANY OR WILL BE MADE AVAILABLE UPON REQUEST.” 

5.         Rights as a Stockholder. The Participant shall have all the rights
of a stockholder with respect to the Granted Shares, including voting and dividend rights, subject to the transfer and other restrictions set forth herein, including pursuant to Section 2.1(d) hereof and in the Plan. 

6.         Incorporation of the Plan. The Participant specifically understands
and agrees that the Granted Shares issued under the Plan are being sold to the Participant pursuant to the Plan, a copy of which Plan the Participant acknowledges he or she has read and understands and by which Plan he or she agrees to be bound. The
provisions of the Plan are incorporated herein by reference. 
 7.         Tax
Liability of the Participant and Payment of Taxes. The Participant acknowledges and agrees that any income or other taxes due from the Participant with respect to the Granted Shares issued pursuant to this Agreement, including, without
limitation, the Lapsing Forfeiture Right, shall be the Participant’s responsibility. Without limiting the foregoing, the Participant agrees that, to the extent that the lapsing of restrictions on disposition of any of the Granted Shares or the
declaration of dividends on any such shares before the lapse of such restrictions on disposition results in the Participant’s being deemed to be in receipt of earned income under the provisions of the Code, the Company shall be entitled to
immediate payment from the Participant of the amount of any tax required to be withheld by the Company. 
 Upon execution of
this Agreement, the Participant may file an election under Section 83 of the Code in substantially the form attached as Exhibit A. The Participant acknowledges that if he or she does not file such an election, as the Granted Shares are
released from the Lapsing Forfeiture Right in accordance with Section 2.1, the Participant will have income for tax purposes equal to the Fair Market Value of the Granted Shares at such date, less the price paid for the Granted Shares by the
Participant. The Participant has been given the opportunity to obtain the 

  
 5 








 
advice of his or her tax advisors with respect to the tax consequences of the purchase of the Granted Shares and the provisions of this Agreement. 

If the Participant has not filed an election under Section 83 of the Code, the Participant shall be required to deposit
with the Company an amount of cash equal to the amount determined by the Company to be required with respect to the statutory minimum of the Participant’s estimated total federal, state and local tax obligations associated with the termination
of the Lapsing Forfeiture Right with respect to the Granted Shares. In connection with the foregoing, the Participant agrees that if an arrangement to pay the withholding obligation in cash has not been received by the Company prior to the vesting
date, the Company shall authorize a registered broker(s) (the “Broker”) to sell on the date that the Granted Shares shall be released from the Lapsing Forfeiture Right such number of Granted Shares as the Company instructs the Broker to
sell to satisfy the Company’s withholding obligations, after deduction of the Broker’s commission, and the Broker shall remit to the Company the cash necessary in order for the Company to satisfy its withholding obligation. To the extent
the proceeds of such sale exceed the Company’s tax withholding obligation the Company agrees to pay such excess cash to the Participant as soon as practicable. In addition, if such sale is not sufficient to pay the Company’s tax
withholding obligation the Participant agrees to pay to the Company as soon as practicable, including through additional payroll withholding, the amount of any tax withholding obligation that is not satisfied by the sale of shares of Common Stock.
The Participant agrees to hold the Company and the Broker harmless from all costs, damages or expenses relating to any such sale. The Participant acknowledges that the Company and the Broker are under no obligation to arrange for such sale at any
particular price. In connection with such sale of Granted Shares, the Participant shall execute any such documents requested by the Broker in order to effectuate the sale of the Granted Shares and payment of the withholding obligation to the
Company. The Company shall not deliver any shares of Common Stock to the Participant until all of the Company’s withholding obligations have been satisfied. The Participant acknowledges that this paragraph is intended to comply with
Section 10b5-1(c)(1)(i)(B) under the Exchange Act. Notwithstanding the foregoing, the Company shall have the right to require the Company payments be made in cash instead of through the sale of shares of Common Stock if it reasonably believes
that the sale of shares would violate applicable securities laws. 
 8.        
Equitable Relief. The Participant specifically acknowledges and agrees that in the event of a breach or threatened breach of the provisions of this Agreement or the Plan, including the attempted transfer of the Granted Shares by the
Participant in violation of this Agreement, monetary damages may not be adequate to compensate the Company, and, therefore, in the event of such a breach or threatened breach, in addition to any right to damages, the Company shall be entitled to
equitable relief in any court having competent jurisdiction. Nothing herein shall be construed as prohibiting the Company from pursuing any other remedies available to it for any such breach or threatened breach. 

9.         No Obligation to Maintain Relationship. The Participant acknowledges
that: (i) the Company is not by the Plan or this Agreement obligated to continue the Participant as an Employee, director or Consultant of the Company or an Affiliate; (ii) the Plan is discretionary in nature and may be suspended or
terminated by the Company at any time; (iii) the grant of the Granted Shares is a one-time benefit which does not create any contractual or other right to receive future grants of Shares, or benefits in lieu of Shares; (iv) all
determinations with respect to any such future grants, including, but not limited to, the times when Shares shall be granted, the number of Shares to be granted, the purchase price, and the time or times when each Share shall be free from a lapsing
repurchase or forfeiture right, will be at the sole discretion of the Company; (v) the Participant’s participation in the Plan is voluntary; (vi) the value of the Granted Shares is an extraordinary item of compensation which is
outside the scope of the Participant’s employment contract, if any; and (vii) the Granted Shares are not part of normal or expected compensation for purposes of calculating any severance, resignation, redundancy, end of service payments,
bonuses, long-service awards, pension or retirement benefits or similar payments. 

10.         Notices. Any notices required or permitted by the terms of this
Agreement or the Plan shall be given by recognized courier service, facsimile, registered or certified mail, return receipt requested, addressed as follows: 

  
 6 








 If to the Company: 

MabVax Therapeutics Holdings, Inc. 

11588 Sorrento Valley Road, Suite 20 

San Diego, California 92121 

Attn:
[                        ] 

If to the Participant: 

  [                 
                       ]   

  [                 
                       ]   

  [                 
                       ]   

or to such other address or addresses of which notice in the same manner has previously been given. Any such notice shall be deemed to have been given on the
earliest of receipt, one business day following delivery by the sender to a recognized courier service, or three business days following mailing by registered or certified mail. 

11.         Benefit of Agreement. Subject to the provisions of the Plan and the
other provisions hereof, this Agreement shall be for the benefit of and shall be binding upon the heirs, executors, administrators, successors and assigns of the parties hereto. 

12.         Governing Law. This Agreement shall be construed and enforced in
accordance with the laws of the State of Delaware, without giving effect to the conflict of law principles thereof. For the purpose of litigating any dispute that arises under this Agreement, whether at law or in equity, the parties hereby consent
to exclusive jurisdiction in California and agree that such litigation shall be conducted in the state courts of San Diego County, California or the federal courts of the United States for the Southern District of California. 

13.         Severability. If any provision of this Agreement is held to be
invalid or unenforceable by a court of competent jurisdiction, then such provision or provisions shall be modified to the extent necessary to make such provision valid and enforceable, and to the extent that this is impossible, then such provision
shall be deemed to be excised from this Agreement, and the validity, legality and enforceability of the rest of this Agreement shall not be affected thereby. 

14.         Entire Agreement. This Agreement, together with the Plan,
constitutes the entire agreement and understanding between the parties hereto with respect to the subject matter hereof and supersedes all prior oral or written agreements and understandings relating to the subject matter hereof. No statement,
representation, warranty, covenant or agreement not expressly set forth in this Agreement shall affect or be used to interpret, change or restrict the express terms and provisions of this Agreement provided, however, in any event, this Agreement
shall be subject to and governed by the Plan. 
 15.         Modifications and
Amendments; Waivers and Consents. The terms and provisions of this Agreement may be modified or amended as provided in the Plan. Except as provided in the Plan, the terms and provisions of this Agreement may be waived, or consent for the
departure therefrom granted, only by written document executed by the party entitled to the benefits of such terms or provisions. No such waiver or consent shall be deemed to be or shall constitute a waiver or consent with respect to any other terms
or provisions of this Agreement, whether or not similar. Each such waiver or consent shall be effective only in the specific instance and for the purpose for which it was given, and shall not constitute a continuing waiver or consent. 

16.         Consent of Spouse/Domestic Partner. If the Participant has a spouse
or a domestic partner as of the date of this Agreement, the Participant’s spouse or domestic partner shall execute a Consent of Spouse/Domestic Partner in the form of Exhibit B hereto, effective as of the date hereof. Such consent shall
not be deemed to confer or convey to the spouse or domestic partner any rights in the Granted Shares that do not otherwise exist by operation 

  
 7 








 
of law or the agreement of the parties. If the Participant subsequent to the date hereof, marries, remarries or applies to the Company for domestic partner benefits, the Participant shall, not
later than 60 days thereafter, obtain his or her new spouse’s/domestic partner’s acknowledgement of and consent to the existence and binding effect of all restrictions contained in this Agreement by having such spouse/domestic partner
execute and deliver a Consent of Spouse/Domestic Partner in the form of Exhibit B. 

17.         Counterparts. This Agreement may be executed in one or more
counterparts, and by different parties hereto on separate counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. 

18.         Data Privacy. By entering into this Agreement, the Participant:
(i) authorizes the Company and each Affiliate, and any agent of the Company or any Affiliate administering the Plan or providing Plan recordkeeping services, to disclose to the Company or any of its Affiliates such information and data as the
Company or any such Affiliate shall request in order to facilitate the grant of Shares and the administration of the Plan; and (ii) authorizes the Company and each Affiliate to store and transmit such information in electronic form for the
purposes set forth in this Agreement. 
 [THE NEXT PAGE IS THE SIGNATURE PAGE] 

  
 8 








 IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the day
and year first above written. 
  

			
	MABVAX THERAPEUTICS HOLDINGS, INC.
	
	By:                                   
                                         
  
	Name:                              
                                         
   
	Title:                              
                                         
     


  

			
	PARTICIPANT:
	
	                                    
                                         
         
	Print name:                            
                                        










 EXHIBIT A 

Election to Include Gross Income in Year 

of Transfer Pursuant to Section 83(b) 

of the Internal Revenue Code of 1986, as amended 

In accordance with Section 83(b) of the Internal Revenue Code of 1986, as amended (the “Code”), the undersigned hereby elects to include in his
gross income as compensation for services the excess, if any, of the fair market value of the property (described below) at the time of transfer over the amount paid for such property. 

The following sets forth the information required in accordance with the Code and the regulations promulgated thereunder: 

 

	1.	 The name, address and social security number of the undersigned are: 



 

											
	 Name:
	 	                    	 		 		 		 	
	 Address:
	 	                    	 		 		 		 	
		 	                    	 		 		 		 	
	 Social Security No.:
	 	                    	 		 		 		 	

  

	2.	 The description of the property with respect to which the election is being made is as follows: 



                
(            ) shares (the “Shares”) of Common Stock, $         par value per share, of MabVax Therapeutics Holdings, Inc. a
Delaware corporation (the “Company”). 
  

	3.	 This election is made for the calendar year         , with respect to the transfer of the property
to the taxpayer on                     . 


  

	4.	 Description of restrictions: The property is subject to the following restrictions: 



In the event the taxpayer’s service with the Company or an affiliate of the Company is terminated (the
“Termination”), the taxpayer shall forfeit the Shares as set forth below: 
  

	 	A.	 If the Termination takes place on or prior to the first anniversary of the Grant Date all of the Shares will be forfeited. 



 

	 	B.	 If the Termination takes place after the first anniversary of the Grant Date, the number of Shares forfeited shall be seventy-five percent
(75%) of the Shares less one-forty eighth (1/48th) of the Shares for each full month elapsed after the first anniversary of the Grant Date if the taxpayer is employed by the Company or an affiliate of the Company or is providing services
as a consultant to or director of the Company or an affiliate of the Company. 


  

	5.	 The fair market value at the time of transfer (determined without regard to any restrictions other than restrictions which by their terms will
never lapse) of the property with respect to which this election is being made was not more than $         per Share. 



 

	6.	 The amount paid by taxpayer for said property was $         per Share. 



 

	7.	 A copy of this statement has been furnished to the Company. 



Signed this          day of         ,
20    . 
  

			
	
	                                    
                                         
         
	Print Name:



  
 A-1 








 EXHIBIT B 

CONSENT OF SPOUSE/DOMESTIC PARTNER 

I,
                                        ,
spouse or domestic partner of
                                        ,
acknowledge that I have read the RESTRICTED STOCK AGREEMENT dated as of                     , 20     (the
“Agreement”) to which this Consent is attached as Exhibit B and that I know its contents. Capitalized terms used and not defined herein shall have the meanings assigned to such terms in the Agreement. I am aware that by its
provisions the Granted Shares granted to my spouse/domestic partner pursuant to the Agreement are subject to a Lapsing Forfeiture Right in favor of MabVax Therapeutics Holdings, Inc. (the “Company”) and that, accordingly, I may be required
to forfeit to the Company any or all of the Granted Shares of which I may become possessed as a result of a gift from my spouse/domestic partner or a court decree and/or any property settlement in any domestic litigation. 

I hereby agree that my interest, if any, in the Granted Shares subject to the Agreement shall be irrevocably bound by the
Agreement and further understand and agree that any community property interest I may have in the Granted Shares shall be similarly bound by the Agreement. 

I agree to the Lapsing Forfeiture Right described in the Agreement and I hereby consent to the forfeiture of the Granted
Shares to the Company by my spouse/domestic partner or my spouse/domestic partner’s legal representative in accordance with the provisions of the Agreement. Further, as part of the consideration for the Agreement, I agree that at my death, if I
have not disposed of any interest of mine in the Granted Shares by an outright bequest of the Granted Shares to my spouse/domestic partner, then the Company shall have the same rights against my legal representative to exercise its rights to the
Granted Shares with respect to any interest of mine in the Granted Shares as it would have had pursuant to the Agreement if I had acquired the Granted Shares pursuant to a court decree in domestic litigation. 

I AM AWARE THAT THE LEGAL, FINANCIAL AND RELATED MATTERS CONTAINED IN THE AGREEMENT ARE COMPLEX AND THAT I AM FREE TO SEEK
INDEPENDENT PROFESSIONAL GUIDANCE OR COUNSEL WITH RESPECT TO THIS CONSENT. I HAVE EITHER SOUGHT SUCH GUIDANCE OR COUNSEL OR DETERMINED AFTER REVIEWING THE AGREEMENT CAREFULLY THAT I WILL WAIVE SUCH RIGHT. 

Dated as of the              day of
                    , 20    . 

 

			
	
	                                    
                                         
         
	Print name:



  
 B-1