Document:

EX-10.5

 Exhibit 10.5 

LYELL IMMUNOPHARMA, INC. 

GLOBAL RSU AWARD GRANT NOTICE 

(2021 EQUITY INCENTIVE PLAN) 

Lyell Immunopharma, Inc. (the “Company”) has awarded to you (the “Participant”) the number of restricted stock
units specified and on the terms set forth below (the “RSU Award”). Your RSU Award is subject to all of the terms and conditions as set forth herein and in the Company’s 2021 Equity Incentive Plan (the
“Plan”) and the Global RSU Award Agreement, including any additional terms and conditions for your country set forth in the appendix thereto (the “Appendix” and, together with the Global RSU Award
Agreement, the “Agreement”), all of which are incorporated herein in their entirety. Capitalized terms not explicitly defined herein but defined in the Plan or the Agreement shall have the meanings set forth in the Plan or
the Agreement, as applicable. 
  

			
	Participant:	 	
	Date of Grant:	 	
	Vesting Commencement Date:	 	
	Number of Restricted Stock Units:	 	

  

			
	Vesting Schedule:	  	[__________________________________________________________________]. Notwithstanding the foregoing, except as set forth below, vesting shall terminate upon the Participant’s termination of Continuous Service, as
described in Section 6(l) of the Agreement.

  

			
	Issuance Schedule:	  	One share of Common Stock will be issued for each restricted stock unit which vests at the time set forth in Section 5 of the Agreement.

 Participant Acknowledgements: By your signature below or by electronic acceptance or authentication in a form
authorized by the Company, you understand and agree that: 
  

	 	•	 	 The RSU Award is governed by this Global RSU Award Grant Notice (the “Grant Notice”), and
the provisions of the Plan and the Agreement, all of which are made a part of this document. Unless otherwise provided in the Plan, this Grant Notice and the Agreement (together, the “RSU Award Agreement”) may not be
modified, amended or revised except in a writing signed by you and a duly authorized officer of the Company. 

  

	 	•	 	 You have read and are familiar with the provisions of the Plan, the RSU Award Agreement and the Prospectus. In
the event of any conflict between the provisions in the RSU Award Agreement, or the Prospectus and the terms of the Plan, the terms of the Plan shall control. 

 

	 	•	 	 The RSU Award Agreement sets forth the entire understanding between you and the Company regarding the acquisition
of Common Stock and supersedes all prior oral and written agreements, promises and/or representations on that subject with the exception of: (i) other equity awards previously granted to you, and (ii) any written employment agreement,
offer letter, severance agreement, written severance plan or policy, or other written agreement between the Company and you in each case that specifies the terms that should govern this RSU Award. 

											
	LYELL IMMUNOPHARMA, INC.	 		  	 PARTICIPANT: 

						
	 By:
	 		 		 	  
	 	        	  	  

	 	 	 	 	 	 	Signature	 	 	  	Signature
	Title:	 		 		 	  
	 		  	 Date:

	 Date:
	 		 		 	  
	 		  	

 LYELL IMMUNOPHARMA, INC. 

2021 EQUITY INCENTIVE PLAN 

GLOBAL RSU AWARD AGREEMENT 

As reflected by your Global RSU Award Grant Notice (“Grant Notice”), Lyell Immunopharma, Inc. (the
“Company”) has granted you a RSU Award under its 2021 Equity Incentive Plan (the “Plan”) for the number of restricted stock units as indicated in your Grant Notice (the “RSU
Award”). The terms of your RSU Award as specified in this Global RSU Award Agreement for your RSU Award, including any additional terms and conditions for your country set forth in the appendix hereto (the
“Appendix” and, together with the Global RSU Award Agreement, the “Agreement”) and the Grant Notice constitute your “RSU Award Agreement”. Defined terms not explicitly defined
in this Agreement but defined in the Grant Notice or the Plan shall have the same definitions as in the Grant Notice or Plan, as applicable. 

The general terms applicable to your RSU Award are as follows: 

1. GOVERNING PLAN DOCUMENT. Your RSU Award is subject to all the provisions of the
Plan. Your RSU Award is further subject to all interpretations, amendments, rules and regulations, which may from time to time be promulgated and adopted pursuant to the Plan. In the event of any conflict between the RSU Award Agreement and the
provisions of the Plan, the provisions of the Plan shall control. 
 2. GRANT OF THE
RSU AWARD. This RSU Award represents your right to be issued on a future date the number of shares of the Company’s Common Stock that is equal to the number of restricted stock units indicated in the Grant Notice subject to
your satisfaction of the vesting conditions set forth therein (the “Restricted Stock Units”). Any additional Restricted Stock Units that become subject to the RSU Award pursuant to Capitalization Adjustments as set forth in
the Plan and the provisions of Section 3 below, if any, shall be subject, in a manner determined by the Board, to the same forfeiture restrictions, restrictions on transferability, and time and manner of delivery as applicable to the other
Restricted Stock Units covered by your RSU Award. 
 3. DIVIDENDS. You shall receive no benefit or
adjustment to your RSU Award with respect to any cash dividend, stock dividend or other distribution that does not result from a Capitalization Adjustment as provided in the Plan; provided, however, that this sentence shall not apply with respect to
any shares of Common Stock that are delivered to you in connection with your RSU Award after such shares have been delivered to you. 

4. RESPONSIBILITY FOR TAXES. 

(a) Regardless of any action taken by the Company or, if different, the Affiliate to which you provide Continuous Service (the
“Service Recipient”) with respect to any income tax, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items associated with the grant or
vesting of the RSU Award or sale of the underlying Common Stock or other tax-related items related to your participation in the Plan and legally 

  
 1. 

 
applicable or deemed applicable to you (the “Tax Liability”), you hereby acknowledge and agree that the Tax Liability is your ultimate responsibility and may exceed the
amount, if any, actually withheld by the Company or the Service Recipient. You further acknowledge that the Company and the Service Recipient (i) make no representations or undertakings regarding any Tax Liability in connection with any aspect
of this RSU Award, including, but not limited to, the grant or vesting of the RSU Award, the issuance of Common Stock pursuant to such vesting, the subsequent sale of shares of Common Stock, and the payment of any dividends on the shares; and
(ii) do not commit to and are under no obligation to structure the terms of the grant or any aspect of the RSU Award to reduce or eliminate your Tax Liability or achieve a particular tax result. Further, if you are subject to Tax Liability in
more than one jurisdiction, you acknowledge that the Company and/or the Service Recipient (or former service recipient, as applicable) may be required to withhold or account for Tax Liability in more than one jurisdiction. 

(b) Prior to any relevant taxable or tax withholding event, as applicable, you agree to make adequate arrangements satisfactory to the
Company and/or the Service Recipient to satisfy all Tax Liability. As further provided in Section 8 of the Plan, you hereby authorize the Company and any applicable Service Recipient to satisfy any applicable withholding obligations with regard
to the Tax Liability by one or a combination of the following methods: (i) causing you to pay any portion of the Tax Liability in cash or cash equivalent in a form acceptable to the Company and/or the Service Recipient; (ii) withholding
from any compensation otherwise payable to you by the Company or the Service Recipient; (iii) withholding shares of Common Stock from the shares of Common Stock issued or otherwise issuable to you in connection with the Award; provided,
however, that to the extent necessary to qualify for an exemption from application of Section 16(b) of the Exchange Act, if applicable, such share withholding procedure will be subject to the express prior approval of the Board or the
Company’s Compensation Committee; (iv) permitting or requiring you to enter into a “same day sale” commitment, if applicable, with a broker-dealer that is a member of the Financial Industry Regulatory Authority (a
“FINRA Dealer”), pursuant to this authorization and without further consent, whereby you irrevocably elect to sell a portion of the shares of Common Stock to be delivered in connection with your Restricted Stock Units to
satisfy the Tax Liability and whereby the FINRA Dealer irrevocably commits to forward the proceeds necessary to satisfy the Tax Liability directly to the Company or the Service Recipient; and/or (v) any other method determined by the Company to
be in compliance with Applicable Law. Furthermore, you agree to pay or reimburse the Company or the Service Recipient any amount the Company or the Service Recipient may be required to withhold, collect or pay as a result of your participation in
the Plan or that cannot be satisfied by the means previously described. In the event it is determined that the amount of the Tax Liability was greater than the amount withheld by the Company and/or the Service Recipient (as applicable), you agree to
indemnify and hold the Company and/or the Service Recipient (as applicable) harmless from any failure by the Company or the applicable Service Recipient to withhold the proper amount. 

(c) The Company and/or the Service Recipient may withhold or account for your Tax Liability by considering statutory withholding amounts
or other withholding rates applicable in your jurisdiction(s), including (i) maximum applicable rates in your jurisdiction(s). In the event of over-withholding, you may receive a refund of any over-withheld amount in cash from the Company or
the Service Recipient (with no entitlement to the Common Stock 

  
 2. 

 
equivalent), or if not refunded, you may seek a refund from the local tax authorities. In the event of under-withholding, you may be required to pay any Tax Liability directly to the applicable
tax authority or to the Company and/or the Service Recipient. If the Tax Liability withholding obligation is satisfied by withholding shares of Common Stock, for tax purposes, you are deemed to have been issued the full number of shares of Common
Stock subject to the vested portion of the RSU Award, notwithstanding that a number of the shares of Common Stock is held back solely for the purpose of paying such Tax Liability. 

(d) You acknowledge that you may not participate in the Plan and the Company shall have no obligation to issue or deliver shares of
Common Stock until you have fully satisfied any applicable Tax Liability, as determined by the Company. Unless any withholding obligation for the Tax Liability is satisfied, the Company shall have no obligation to issue or deliver to you any Common
Stock in respect of the RSU Award. 
 5. DATE OF ISSUANCE. 

(a) The issuance of shares in respect of the Restricted Stock Units is intended to comply with U.S. Treasury Regulations Section 1.409A-1(b)(4) and will be construed and administered in such a manner. Subject to the satisfaction of the Tax Liability withholding obligation, if any, in the event one or more Restricted Stock Units
vests, the Company shall issue to you one (1) share of Common Stock for each vested Restricted Stock Unit on the applicable vesting date. Each issuance date determined by this paragraph is referred to as an “Original Issuance
Date.” 
 (b) If the Original Issuance Date falls on a date that is not a business day, delivery shall instead occur on
the next following business day. In addition, if: 
 (i) the Original Issuance Date does not occur (1) during an “open
window period” applicable to you, as determined by the Company in accordance with the Company’s then-effective policy on trading in Company securities, or (2) on a date when you are otherwise permitted to sell shares of Common Stock
on an established stock exchange or stock market (including but not limited to under a previously established written trading plan that meets the requirements of Rule 10b5-1 under the Exchange Act and was
entered into in compliance with the Company’s policies (a “10b5-1 Arrangement)), and 

(ii) either (1) a Tax Liability withholding obligation does not apply, or (2) the Company decides, prior to the Original
Issuance Date, (A) not to satisfy the Tax Liability withholding obligation by withholding shares of Common Stock from the shares otherwise due, on the Original Issuance Date, to you under this Award, and (B) not to permit you to enter into
a “same day sale” commitment with a broker-dealer (including but not limited to a commitment under a 10b5-1 Arrangement) and (C) not to permit you to pay your Tax Liability in cash, 

then the shares that would otherwise be issued to you on the Original Issuance Date will not be delivered on such Original Issuance
Date and will instead be delivered on the first business day when you are not prohibited from selling shares of the Common Stock in the open public market, but in no event later than December 31 of the calendar year in which the Original
Issuance Date occurs (that is, the last day of your taxable year in which the Original Issuance 

  
 3. 

 
Date occurs), or, if and only if permitted in a manner that complies with U.S. Treasury Regulations Section 1.409A-1(b)(4), no later than the
date that is the 15th day of the third calendar month of the applicable year following the year in which the shares of Common Stock under this Award are no longer subject to a “substantial risk of forfeiture” within the meaning of U.S.
Treasury Regulations Section 1.409A-1(d). 
 6. NATURE
OF GRANT. In accepting the RSU Award, you acknowledge, understand and agree that: 
 (a) the Plan is
established voluntarily by the Company, it is discretionary in nature and it may be modified, amended, suspended or terminated by the Company at any time, to the extent permitted by the Plan; 

(b) the grant of the RSU Award is exceptional, voluntary and occasional and does not create any contractual or other right to receive
future grants of Restricted Stock Units, or benefits in lieu of Restricted Stock Units, even if Restricted Stock Units have been granted in the past; 

(c) all decisions with respect to future RSU Awards or other grants, if any, will be at the sole discretion of the Company; 

(d) the RSU Award and your participation in the Plan shall not create a right to employment or other service relationship with the
Company; 
 (e) the RSU Award and your participation in the Plan shall not be interpreted as forming or amending an employment or
service contract with the Company or the Service Recipient, and shall not interfere with the ability of the Company or the Service Recipient, as applicable, to terminate your Continuous Service (if any); 

(f) you are voluntarily participating in the Plan; 

(g) the RSU Award and the shares of Common Stock subject to the RSU Award, and the income from and value of same, are not intended to
replace any pension rights or compensation; 
 (h) the RSU Award and the shares of Common Stock subject to the RSU Award, and the
income from and value of same, are not part of normal or expected compensation for purposes of, including but not limited to, calculating any severance, resignation, termination, redundancy, dismissal, end-of-service payments, bonuses, holiday pay, long-service awards, pension or retirement or welfare benefits or similar payments; 

(i) unless otherwise agreed with the Company in writing, the RSU Award and the shares of Common Stock subject to the RSU Award, and the
income from and value of same, are not granted as consideration for, or in connection with, the service you may provide as a director of an Affiliate; 

(j) the future value of the underlying shares of Common Stock is unknown, indeterminable and cannot be predicted with certainty; 

  
 4. 

 (k) no claim or entitlement to compensation or damages shall arise from forfeiture of
the RSU Award resulting from the termination of your Continuous Service (for any reason whatsoever, whether or not later found to be invalid or in breach of employment laws in the jurisdiction where you are providing service or the terms of your
employment or other service agreement, if any); 
 (l) for purposes of the RSU Award, your Continuous Service will be considered
terminated as of the date you are no longer actively providing services to the Company or any Affiliate (regardless of the reason for such termination and whether or not later found to be invalid or in breach of employment laws in the jurisdiction
where you are providing service or the terms of your employment or other service agreement, if any), and such date will not be extended by any notice period (e.g., your period of Continuous Service would not include any contractual notice
period or any period of “garden leave” or similar period mandated under employment laws in the jurisdiction where you are providing service or the terms of your employment or other service agreement, if any); the Compensation Committee
shall have the exclusive discretion to determine when you are no longer actively providing services for purposes of your RSU Award (including whether you may still be considered to be providing services while on a leave of absence); and 

(m) neither the Company nor the Service Recipient shall be liable for any foreign exchange rate fluctuation between your local currency
and the United States Dollar that may affect the value of the Restricted Stock Units or of any amounts due to you pursuant to the settlement of the RSU Award or the subsequent sale of any shares of Common Stock acquired upon settlement. 

7. TRANSFERABILITY. Except as otherwise provided in the Plan, your RSU Award is not transferable, except by will
or by the applicable laws of descent and distribution 
 8. CORPORATE TRANSACTION. Your RSU
Award is subject to the terms of any agreement governing a Corporate Transaction involving the Company, including, without limitation, a provision for the appointment of a stockholder representative that is authorized to act on your behalf with
respect to any escrow, indemnities and any contingent consideration. 
 9. NO LIABILITY
FOR TAXES. As a condition to accepting the RSU Award, you hereby (a) agree to not make any claim against the Company, or any of its Officers, Directors, Employees or Affiliates related to any Tax
Liability arising from the RSU Award and (b) acknowledge that you were advised to consult with your own personal tax, financial and other legal advisors regarding the tax consequences of the RSU Award and have either done so or knowingly and
voluntarily declined to do so. 
 10. NO ADVICE REGARDING
GRANT. The Company is not providing any tax, legal or financial advice, nor is the Company making any recommendations regarding your participation in the Plan, or your acquisition or sale of the underlying shares of
Common Stock. You should consult with your own personal tax, legal and financial advisors regarding your participation in the Plan before taking any action related to the Plan. 

  
 5. 

 11. GOVERNING LAW AND
VENUE. The RSU Award and the provisions of this Agreement are governed by, and construed in accordance with, the internal laws of the State of Delaware, without regard to the conflict of law principles
that would result in any application of any law other than the law of the State of Delaware. For purposes of any action, lawsuit or other proceedings brought to enforce this Agreement, relating to it, or arising from it, the parties hereby submit to
and consent to the sole and exclusive jurisdiction of the courts of the State of Delaware, and no other courts, where this grant is made and/or to be performed. 

12. SEVERABILITY. If any part of this Agreement or the Plan is declared by any court or
governmental authority to be unlawful or invalid, such unlawfulness or invalidity will not invalidate any portion of this Agreement or the Plan not declared to be unlawful or invalid. Any Section of this Agreement (or part of such a Section) so
declared to be unlawful or invalid will, if possible, be construed in a manner which will give effect to the terms of such Section or part of a Section to the fullest extent possible while remaining lawful and valid. 

13. COMPLIANCE WITH LAW. Notwithstanding any other provision of the Plan or
this Agreement, unless there is an exemption from any registration, qualification or other legal requirement applicable to the shares of Common Stock, the Company shall not be required to deliver any shares issuable upon settlement of the Restricted
Stock Units prior to the completion of any registration or qualification of the shares under any local, state, federal or foreign securities or exchange control law or under rulings or regulations of the U.S. Securities and Exchange Commission
(“SEC”) or of any other governmental regulatory body, or prior to obtaining any approval or other clearance from any local, state, federal or foreign governmental agency, which registration, qualification or approval the Company shall, in
its absolute discretion, deem necessary or advisable. You understand that the Company is under no obligation to register or qualify the shares with the SEC or any state or foreign securities commission or to seek approval or clearance from any
governmental authority for the issuance or sale of the shares. Further, you agree that the Company shall have unilateral authority to amend the Agreement without your consent to the extent necessary to comply with securities or other laws applicable
to issuance of shares of Common Stock. 
 14. LANGUAGE. You acknowledge that you are proficient in the English
language, or have consulted with an advisor who is proficient in the English language, so as to enable you to understand the provisions of this Agreement and the Plan. If you have received this Agreement or any other document related to the Plan
translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control. 

15. ELECTRONIC DELIVERY AND PARTICIPATION. The Company may, in its
sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means. You hereby consent to receive such documents by electronic delivery and agree to participate in the Plan through an online
or electronic system established and maintained by the Company or a third party designated by the Company. 
 16.
SEVERABILITY. The provisions of this Agreement are severable and if any one or more provisions are determined to be illegal or otherwise unenforceable, in whole or in part, the remaining provisions shall nevertheless be binding
and enforceable. 

  
 6. 

 17. APPENDIX. Notwithstanding any provisions in this Global RSU
Award Agreement, the RSU Award shall be subject to any additional terms and conditions set forth in any Appendix for your country. Moreover, if you relocate to one of the countries included in the Appendix, the additional terms and conditions for
such country will apply to you, to the extent the Company determines that the application of such terms and conditions is necessary or advisable for legal or administrative reasons. The Appendix constitutes part of this Agreement. 

18. IMPOSITION OF OTHER REQUIREMENT. The Company reserves the right
to impose other requirements on your participation in the Plan, on the RSU and on any shares of Common Stock acquired under the Plan, to the extent the Company determines it is necessary or advisable for legal or administrative reasons, and to
require you to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing. 
 19.
WAIVER. You acknowledge that a waiver by the Company of breach of any provision of this Agreement shall not operate or be construed as a waiver of any other provision of this Agreement, or of any subsequent breach by you or any
other participant. 
 20. INSIDER TRADING/MARKET ABUSE. You
acknowledge that, depending on your or your broker’s country or where the Company shares are listed, you may be subject to insider trading restrictions and/or market abuse laws which may affect your ability to accept, acquire, sell or otherwise
dispose of shares of Common Stock, rights to shares (e.g., Restricted Stock Units) or rights linked to the value of shares (e.g., phantom awards, futures) during such times you are considered to have “inside information”
regarding the Company as defined in the laws or regulations in the applicable jurisdictions). Local insider trading laws and regulations may prohibit the cancellation or amendment of orders you placed before you possessed inside information.
Furthermore, you could be prohibited from (i) disclosing the inside information to any third party (other than on a “need to know” basis) and (ii) “tipping” third parties or causing them otherwise to buy or sell securities.
Keep in mind third parties includes fellow employees. Any restrictions under these laws or regulations are separate from and in addition to any restrictions that may be imposed under any applicable insider trading policy of the Company. You are
responsible for complying with any restrictions and should speak to your personal advisor on this matter. 
 21.
EXCHANGE CONTROL, FOREIGN ASSET/ACCOUNT AND/OR TAX REPORTING. Depending upon the country to which laws you
are subject, you may have certain foreign asset/account and/or tax reporting requirements that may affect your ability to acquire or hold shares of Common Stock under the Plan or cash received from participating in the Plan (including from any
dividends or sale proceeds arising from the sale of shares of Common Stock) in a brokerage or bank account outside your country of residence. Your country may require that you report such accounts, assets or transactions to the applicable
authorities in your country. You also may be required to repatriate cash received from participating in the Plan to your country within a certain period of time after receipt. You are responsible for knowledge of and compliance with any such
regulations and should speak with your personal tax, legal and financial advisors regarding same. 
 22. OTHER
DOCUMENTS. You hereby acknowledge receipt of or the right to receive a document providing the information required by Rule 428(b)(1) promulgated under the Securities Act, which includes the Prospectus. In addition, you
acknowledge receipt of the Company’s Trading Policy. 

  
 7. 

 23. QUESTIONS. If you have questions regarding these or any
other terms and conditions applicable to your RSU Award, including a summary of the applicable federal income tax consequences please see the Prospectus. 

  
 8. 

 LYELL IMMUNOPHARMA, INC. 

2021 EQUITY INCENTIVE PLAN 

APPENDIX 

TO GLOBAL RSU AWARD AGREEMENT 

TERMS AND CONDITIONS 

This Appendix forms part of the Agreement and includes additional terms and conditions that govern the RSU Award granted to you under the Plan if you reside
and/or work in one of the jurisdictions listed below. Capitalized terms used but not defined in this Appendix have the meanings set forth in the Plan and/or in the Global RSU Award Agreement. 

If you are a citizen or resident (or are considered as such for local law purposes) of a country other than the country in which you are currently residing
and/or working, or if you relocate to another country after the grant of the RSU Award, the Company shall, in its discretion, determine to what extent the additional terms and conditions contained herein shall be applicable to you. 

NOTIFICATIONS 
 This Appendix may also
include information regarding exchange controls and certain other issues of which you should be aware with respect to participation in the Plan. The information is based on the securities, exchange control, and other laws in effect in the respective
countries as of January 2021. Such laws are often complex and change frequently. As a result, you should not rely on the information in this Appendix as the only source of information relating to the consequences of your participation in the Plan
because the information may be out of date at the time you vest in the Restricted Stock Units, acquire shares of Common Stock, or sell shares of Common Stock acquired under the Plan. 

In addition, the information contained below is general in nature and may not apply to your particular situation. You should seek appropriate professional
advice as to how the relevant laws in your country may apply to your situation. 
 If you are a citizen or resident (or are considered as such for local law
purposes) of a country other than the country in which you are currently residing and/or working, or if you relocate to another country after the grant of the RSU Award, the notifications herein may not apply to you in the same manner. 

  
 9.EX-10.6

 Exhibit 10.6 

LYELL IMMUNOPHARMA, INC. 

2021 EMPLOYEE STOCK PURCHASE PLAN 

ADOPTED BY THE BOARD OF DIRECTORS:
JUNE [__], 2021 
 APPROVED BY THE STOCKHOLDERS:
JUNE [__], 2021 
 IPO DATE: JUNE [__], 2021 

1. GENERAL; PURPOSE. 

(a) The Plan provides a means by which Eligible Employees of the Company and Designated Companies may be given an opportunity to
purchase shares of Common Stock. The Plan permits the Company to grant a series of Purchase Rights to Eligible Employees under an Employee Stock Purchase Plan. In addition, the Plan permits the Company to grant a series of Purchase Rights to
Eligible Employees that do not meet the requirements of an Employee Stock Purchase Plan. 
 (b) The Plan includes two components: a
423 Component and a Non-423 Component. The Company intends (but makes no undertaking or representation to maintain) the 423 Component to qualify as an Employee Stock Purchase Plan. The provisions of the 423
Component, accordingly, will be construed in a manner that is consistent with the requirements of Section 423 of the Code. Except as otherwise provided in the Plan or determined by the Board, the Non-423
Component will operate and be administered in the same manner as the 423 Component. 
 (c) The Company, by means of the Plan, seeks to
retain the services of Eligible Employees, to secure and retain the services of new Employees and to provide incentives for such persons to exert maximum efforts for the success of the Company and its Related Corporations. 

2. ADMINISTRATION. 
 (a)
The Board or the Committee will administer the Plan. References herein to the Board shall be deemed to refer to the Committee except where context dictates otherwise. 

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

(i) To determine how and when Purchase Rights will be granted and the provisions of each Offering (which need not be identical). 

(ii) To designate from time to time (A) which Related Corporations will be eligible to participate in the Plan as Designated 423
Corporations, (B) which Related Corporations or Affiliates will be eligible to participate in the Plan as Designated Non-423 Corporations, and (C) which Designated Companies will participate in each
separate Offering (to the extent that the Company makes separate Offerings). 
 (iii) To construe and interpret the Plan and Purchase
Rights, and to establish, amend and revoke rules and regulations for its administration. The Board, in the exercise of this power, may correct any defect, omission or inconsistency in the Plan, in a manner and to the extent it deems necessary or
expedient to make the Plan fully effective. 
  

 (iv) To settle all controversies regarding the Plan and Purchase Rights granted under
the Plan. 
 (v) To suspend or terminate the Plan at any time as provided in Section 12. 

(vi) To amend the Plan at any time as provided in Section 12. 

(vii) Generally, to exercise such powers and to perform such acts as it deems necessary or expedient to promote the best interests of
the Company and its Related Corporations and to carry out the intent that the Plan be treated as an Employee Stock Purchase Plan with respect to the 423 Component. 

(viii) To adopt such rules, procedures and sub-plans as are necessary or appropriate to permit
or facilitate participation in the Plan by Employees who are foreign nationals or employed or located outside the United States. Without limiting the generality of, and consistent with, the foregoing, the Board specifically is authorized to adopt
rules, procedures, and sub-plans regarding, without limitation, eligibility to participate in the Plan, the definition of eligible “earnings,” handling and making of Contributions, establishment of
bank or trust accounts to hold Contributions, payment of interest, conversion of local currency, obligations to pay payroll tax, determination of beneficiary designation requirements, withholding procedures and handling of share issuances, any of
which may vary according to applicable requirements, and which, if applicable to a Designated Non-423 Corporation, do not have to comply with the requirements of Section 423 of the Code. 

(c) The Board may delegate some or all of the administration of the Plan to a Committee or Committees. If administration is delegated to
a Committee, the Committee will have, in connection with the administration of the Plan, the powers theretofore possessed by the Board that have been delegated to the Committee, including the power to delegate to a subcommittee any of the
administrative powers the Committee is authorized to exercise (and references in this Plan and any Offering Document to the Board will thereafter be to the Committee or subcommittee), subject, however, to such resolutions, not inconsistent with the
provisions of the Plan, as may be adopted from time to time by the Board. Further, to the extent not prohibited by Applicable Law, the Board or Committee may, from time to time, delegate some or all of its authority under the Plan to one or more
officers of the Company or other persons or groups of persons as it deems necessary, appropriate or advisable under conditions or limitations that it may set at or after the time of the delegation. The Board may retain the authority to concurrently
administer the Plan with the Committee and may, at any time, revest in the Board some or all of the powers previously delegated. Whether or not the Board has delegated administration of the Plan to a Committee, the Board will have the final power to
determine all questions of policy and expediency that may arise in the administration of the Plan. 
 (d) All determinations,
interpretations and constructions made by the Board in good faith will not be subject to review by any person and will be final, binding and conclusive on all persons. 

3. SHARES OF COMMON STOCK SUBJECT TO THE
PLAN. 
 (a) Subject to the provisions of Section 11(a) relating to Capitalization Adjustments, the maximum
number of shares of Common Stock that may be issued under the Plan will not exceed 2,470,000 shares of Common Stock, plus the number of shares of Common Stock that are automatically added on January
1st of each year for a period of up to ten years, commencing on January 1, 2022 and ending on (and including) January 1, 2031, in an amount equal to the lesser of (i) 1% of the total
number of shares of Common Stock outstanding on December 31stof the preceding calendar year, and (ii) 4,940,000 shares of Common Stock. Notwithstanding the foregoing, the Board may act prior to
the first 

  
 2 

 
day of any calendar year to provide that there will be no January 1st increase in the share reserve for such calendar year or that the
increase in the share reserve for such calendar year will be a lesser number of shares of Common Stock than would otherwise occur pursuant to the preceding sentence. For the avoidance of doubt, up to the maximum number of shares of Common Stock
reserved under this Section 3(a) may be used to satisfy purchases of Common Stock under the 423 Component and any remaining portion of such maximum number of shares may be used to satisfy purchases of Common Stock under the Non-423 Component. 
 (b) If any Purchase Right granted under the Plan terminates without having
been exercised in full, the shares of Common Stock not purchased under such Purchase Right will again become available for issuance under the Plan. 

(c) The stock purchasable under the Plan will be shares of authorized but unissued or reacquired Common Stock, including shares
repurchased by the Company on the open market. 
 4. GRANT OF PURCHASE RIGHTS;
OFFERING. 
 (a) The Board may from time to time grant or provide for the grant of Purchase Rights to Eligible
Employees under an Offering (consisting of one or more Purchase Periods) on an Offering Date or Offering Dates selected by the Board. Each Offering will be in such form and will contain such terms and conditions as the Board will deem appropriate,
and, with respect to the 423 Component, will comply with the requirement of Section 423(b)(5) of the Code that all Employees granted Purchase Rights will have the same rights and privileges. The terms and conditions of an Offering shall be
incorporated by reference into the Plan and treated as part of the Plan. The provisions of separate Offerings need not be identical, but each Offering will include (through incorporation of the provisions of this Plan by reference in the document
comprising the Offering or otherwise) the period during which the Offering will be effective, which period will not exceed 27 months beginning with the Offering Date, and the substance of the provisions contained in Sections 5 through 8, inclusive.

 (b) If a Participant has more than one Purchase Right outstanding under the Plan, unless he or she otherwise indicates in forms
delivered to the Company or a third party designated by the Company (each, a “Company Designee”): (i) each form will apply to all of his or her Purchase Rights under the Plan, and (ii) a Purchase Right with a lower
exercise price (or an earlier-granted Purchase Right, if different Purchase Rights have identical exercise prices) will be exercised to the fullest possible extent before a Purchase Right with a higher exercise price (or a later-granted Purchase
Right if different Purchase Rights have identical exercise prices) will be exercised. 
 (c) The Board will have the discretion to
structure an Offering so that if the Fair Market Value of a share of Common Stock on the first Trading Day of a new Purchase Period within that Offering is less than or equal to the Fair Market Value of a share of Common Stock on the Offering Date
for that Offering, then (i) that Offering will terminate immediately as of that first Trading Day, and (ii) the Participants in such terminated Offering will be automatically enrolled in a new Offering beginning on the first Trading Day of
such new Purchase Period. 
 5. ELIGIBILITY. 

(a) Purchase Rights may be granted only to Employees of the Company or, as the Board may designate in accordance with Section 2(b),
to Employees of a Related Corporation or an Affiliate. Except as provided in Section 5(b) or as required by Applicable Law, an Employee will not be eligible to be granted Purchase Rights unless, on the Offering Date, the Employee has been in
the employ of the Company or the Related Corporation or an Affiliate, as the case may be, for such continuous period 

  
 3 

 
preceding such Offering Date as the Board may require, but in no event will the required period of continuous employment be equal to or greater than two years. In addition, the Board may (unless
prohibited by Applicable Law) provide that no Employee will be eligible to be granted Purchase Rights under the Plan unless, on the Offering Date, such Employee’s customary employment with the Company, the Related Corporation, or the Affiliate
is more than 20 hours per week and more than five months per calendar year or such other criteria as the Board may determine consistent with Section 423 of the Code with respect to the 423 Component. The Board may also exclude from
participation in the Plan or any Offering Employees who are “highly compensated employees” (within the meaning of Section 423(b)(4)(D) of the Code) of the Company or a Related Corporation or a subset of such highly compensated
employees. 
 (b) The Board may provide that each person who, during the course of an Offering, first becomes an Eligible Employee
will, on a date or dates specified in the Offering which coincides with the day on which such person becomes an Eligible Employee or which occurs thereafter, receive a Purchase Right under that Offering, which Purchase Right will thereafter be
deemed to be a part of that Offering. Such Purchase Right will have the same characteristics as any Purchase Rights originally granted under that Offering, as described herein, except that: 

(i) the date on which such Purchase Right is granted will be the “Offering Date” of such Purchase Right for all purposes,
including determination of the exercise price of such Purchase Right; 
 (ii) the period of the Offering with respect to such Purchase
Right will begin on its Offering Date and end coincident with the end of such Offering; and 
 (iii) the Board may provide that if
such person first becomes an Eligible Employee within a specified period of time before the end of the Offering, he or she will not receive any Purchase Right under that Offering. 

(c) No Employee will be eligible for the grant of any Purchase Rights under the 423 Component if, immediately after any such Purchase
Rights are granted, such Employee owns stock possessing five percent or more of the total combined voting power or value of all classes of stock of the Company or of any Related Corporation. For purposes of this Section 5(c), the rules of
Section 424(d) of the Code will apply in determining the stock ownership of any Employee, and stock which such Employee may purchase under all outstanding Purchase Rights and options will be treated as stock owned by such Employee. 

(d) As specified by Section 423(b)(8) of the Code, an Eligible Employee may be granted Purchase Rights under the 423 Component only
if such Purchase Rights, together with any other rights granted under all Employee Stock Purchase Plans of the Company and any Related Corporations, do not permit such Eligible Employee’s rights to purchase stock of the Company or any Related
Corporation to accrue at a rate which, when aggregated, exceeds U.S. $25,000 of Fair Market Value of such stock (determined at the time such rights are granted, and which, with respect to the Plan, will be determined as of their respective Offering
Dates) for each calendar year in which such rights are outstanding at any time. 
 (e) Officers of the Company and any Designated
Company, if they are otherwise Eligible Employees, will be eligible to participate in Offerings under the Plan. Notwithstanding the foregoing, the Board may (unless prohibited by Applicable Law) provide in an Offering that Employees who are highly
compensated Employees within the meaning of Section 423(b)(4)(D) of the Code will not be eligible to participate. 

  
 4 

 (f) Notwithstanding anything in this Section 5 to the contrary, in the case of
an Offering under the Non-423 Component, an Eligible Employee (or group of Eligible Employees) may be excluded from participation in the Plan or an Offering if the Board has determined, in its sole discretion,
that participation of such Eligible Employee(s) is not advisable or practical for any reason. 
 6. PURCHASE RIGHTS;
PURCHASE PRICE. 
 (a) On each Offering Date, each Eligible Employee, pursuant to an Offering made
under the Plan, will be granted a Purchase Right to purchase up to that number of shares of Common Stock purchasable either with a percentage of earnings (as defined by the Board in each Offering) or with a maximum dollar amount, as designated by
the Board, during the period that begins on the Offering Date (or such later date as the Board determines for a particular Offering) and ends on the date stated in the Offering, which date will be no later than the end of the Offering. 

(b) The Board will establish one or more Purchase Dates during an Offering on which Purchase Rights granted for that Offering will be
exercised and shares of Common Stock will be purchased in accordance with such Offering. 
 (c) In connection with each Offering made
under the Plan, the Board may specify (i) a maximum number of shares of Common Stock that may be purchased by any Participant on any Purchase Date during such Offering, (ii) a maximum aggregate number of shares of Common Stock that may be
purchased by all Participants pursuant to such Offering and/or (iii) a maximum aggregate number of shares of Common Stock that may be purchased by all Participants on any Purchase Date under the Offering. If the aggregate purchase of shares of
Common Stock issuable upon exercise of Purchase Rights granted under the Offering would exceed any such maximum aggregate number, then, in the absence of any Board action otherwise, a pro rata (based on each Participant’s accumulated
Contributions) allocation of the shares of Common Stock (rounded down to the nearest whole share) available will be made in as nearly a uniform manner as will be practicable and equitable. 

(d) The purchase price of shares of Common Stock acquired pursuant to Purchase Rights will be not less than the lesser of: 

(i) an amount equal to 85% of the Fair Market Value of the shares of Common Stock on the Offering Date; or 

(ii) an amount equal to 85% of the Fair Market Value of the shares of Common Stock on the applicable Purchase Date. 

7. PARTICIPATION; WITHDRAWAL; TERMINATION. 

(a) An Eligible Employee may elect to participate in an Offering and authorize payroll deductions as the means of making Contributions
by completing and delivering to the Company or a Company Designee, within the time specified for the Offering, an enrollment form provided by the Company or Company Designee. The enrollment form will specify the amount of Contributions not to exceed
the maximum amount specified by the Board. Each Participant’s Contributions will be credited to a bookkeeping account for such Participant under the Plan and will be deposited with the general funds of the Company except where Applicable Law
requires that Contributions be deposited with a third party. If permitted in the Offering, a Participant may begin such Contributions with the first payroll occurring on or after the Offering Date (or, in the case of a payroll date that occurs after
the end of the prior Offering but before the Offering Date of the next new Offering, Contributions from such payroll will be included in the new Offering). If permitted in the Offering, a Participant may thereafter reduce (including to zero) or
increase his or her Contributions. If required under Applicable Law or if specifically provided in the Offering, in addition to or instead of making Contributions by payroll deductions, a Participant may make Contributions through payment by cash,
check or wire transfer prior to a Purchase Date. 

  
 5 

 (b) During an Offering, a Participant may cease making Contributions and withdraw
from the Offering by delivering to the Company or a Company Designee a withdrawal form provided by the Company. The Company may impose a deadline before a Purchase Date for withdrawing. Upon such withdrawal, such Participant’s Purchase Right in
that Offering will immediately terminate and the Company will distribute as soon as practicable to such Participant all of his or her accumulated but unused Contributions and such Participant’s Purchase Right in that Offering shall thereupon
terminate. A Participant’s withdrawal from that Offering will have no effect upon his or her eligibility to participate in any other Offerings under the Plan, but such Participant will be required to deliver a new enrollment form to participate
in subsequent Offerings. 
 (c) Unless otherwise required by Applicable Law, Purchase Rights granted pursuant to any Offering under
the Plan will terminate immediately if the Participant either (i) is no longer an Employee for any reason or for no reason (subject to any post-employment participation period required by Applicable Law) or (ii) is otherwise no longer
eligible to participate. The Company will distribute as soon as practicable to such individual all of his or her accumulated but unused Contributions. 

(d) Unless otherwise determined by the Board, a Participant whose employment transfers or whose employment terminates with an immediate
rehire (with no break in service) by or between the Company and a Designated Company or between Designated Companies will not be treated as having terminated employment for purposes of participating in the Plan or an Offering; however, if a
Participant transfers from an Offering under the 423 Component to an Offering under the Non-423 Component, the exercise of the Participant’s Purchase Right will be qualified under the 423 Component only
to the extent such exercise complies with Section 423 of the Code. If a Participant transfers from an Offering under the Non-423 Component to an Offering under the 423 Component, the exercise of the
Purchase Right will remain non-qualified under the Non-423 Component. The Board may establish different and additional rules governing transfers between separate
Offerings within the 423 Component and between Offerings under the 423 Component and Offerings under the Non-423 Component. 

(e) During a Participant’s lifetime, Purchase Rights will be exercisable only by such Participant. Purchase Rights are not
transferable by a Participant, except by will, by the laws of descent and distribution, or, if permitted by the Company, by a beneficiary designation as described in Section 10. 

(f) Unless otherwise specified in the Offering or as required by Applicable Law, the Company will have no obligation to pay interest on
Contributions. 
 8. EXERCISE OF PURCHASE RIGHTS. 

(a) On each Purchase Date, each Participant’s accumulated Contributions will be applied to the purchase of shares of Common Stock,
up to the maximum number of shares of Common Stock permitted by the Plan and the applicable Offering, at the purchase price specified in the Offering. No fractional shares will be issued unless specifically provided for in the Offering. 

(b) Unless otherwise provided in the Offering, if any amount of accumulated Contributions remains in a Participant’s account after
the purchase of shares of Common Stock on the final Purchase Date of an Offering, then such remaining amount will not roll over to the next Offering and will instead be distributed in full to such Participant after the final Purchase Date of such
Offering without interest (unless otherwise required by Applicable Law). 

  
 6 

 (c) No Purchase Rights may be exercised to any extent unless the shares of Common
Stock to be issued upon such exercise under the Plan are covered by an effective registration statement pursuant to the Securities Act and the Plan is in material compliance with all applicable U.S. federal and state, foreign and other securities,
exchange control and other laws applicable to the Plan. If on a Purchase Date the shares of Common Stock are not so registered or the Plan is not in such compliance, no Purchase Rights will be exercised on such Purchase Date, and the Purchase Date
will be delayed until the shares of Common Stock are subject to such an effective registration statement and the Plan is in material compliance, except that the Purchase Date will in no event be more than 27 months from the Offering Date. If, on the
Purchase Date, as delayed to the maximum extent permissible, the shares of Common Stock are not registered and the Plan is not in material compliance with all Applicable Law, as determined by the Company in its sole discretion, no Purchase Rights
will be exercised and all accumulated but unused Contributions will be distributed to the Participants without interest (unless the payment of interest is otherwise required by Applicable Law). 

9. COVENANTS OF THE COMPANY. 

The Company will seek to obtain from each U.S. federal or state, non-U.S. or other regulatory
commission, agency or other Governmental Body having jurisdiction over the Plan such authority as may be required to grant Purchase Rights and issue and sell shares of Common Stock thereunder unless the Company determines, in its sole discretion,
that doing so is not practical or would cause the Company to incur costs that are unreasonable. If, after commercially reasonable efforts, the Company is unable to obtain the authority that counsel for the Company deems necessary for the grant of
Purchase Rights or the lawful issuance and sale of Common Stock under the Plan, and at a commercially reasonable cost, the Company will be relieved from any liability for failure to grant Purchase Rights and/or to issue and sell Common Stock upon
exercise of such Purchase Rights. 
 10. DESIGNATION OF BENEFICIARY. 

(a) The Company may, but is not obligated to, permit a Participant to submit a form designating a beneficiary who will receive any
shares of Common Stock and/or Contributions from the Participant’s account under the Plan if the Participant dies before such shares and/or Contributions are delivered to the Participant. The Company may, but is not obligated to, permit the
Participant to change such designation of beneficiary. Any such designation and/or change must be on a form approved by the Company. 

(b) If a Participant dies, and in the absence of a valid beneficiary designation, the Company will deliver any shares of Common Stock
and/or Contributions to the executor or administrator of the estate of the Participant. If no executor or administrator has been appointed (to the knowledge of the Company), the Company, in its sole discretion, may deliver such shares of Common
Stock and/or Contributions, without interest (unless the payment of interest is otherwise required by Applicable Law), to the Participant’s spouse, dependents or relatives, or if no spouse, dependent or relative is known to the Company, then to
such other person as the Company may designate. 
 11. ADJUSTMENTS UPON CHANGES IN
COMMON STOCK; CORPORATE TRANSACTIONS. 
 (a) In the event of a
Capitalization Adjustment, the Board will appropriately and proportionately adjust: (i) the class(es) and maximum number of securities subject to the Plan pursuant to Section 3(a), (ii) the class(es) and maximum number of securities by
which the share reserve is to increase automatically each year pursuant to Section 3(a), (iii) the class(es) and number of securities subject to, and the purchase price applicable to outstanding Offerings and Purchase Rights, and (iv) the
class(es) and number of securities that are the subject of the purchase limits under each ongoing Offering. The Board will make these adjustments, and its determination will be final, binding and conclusive. 

  
 7 

 (b) In the event of a Corporate Transaction, then: (i) any surviving corporation
or acquiring corporation (or the surviving or acquiring corporation’s parent company) may assume or continue outstanding Purchase Rights or may substitute similar rights (including a right to acquire the same consideration paid to the
stockholders in the Corporate Transaction) for outstanding Purchase Rights, or (ii) if any surviving or acquiring corporation (or its parent company) does not assume or continue such Purchase Rights or does not substitute similar rights
for such Purchase Rights, then the Participants’ accumulated Contributions will be used to purchase shares of Common Stock (rounded down to the nearest whole share) within ten business days (or such other period specified by the Board) prior to
the Corporate Transaction under the outstanding Purchase Rights, and the Purchase Rights will terminate immediately after such purchase. 
 12.
AMENDMENT, TERMINATION OR SUSPENSION OF THE PLAN. 

(a) The Board may amend the Plan at any time in any respect the Board deems necessary or advisable. However, except as provided in
Section 11(a) relating to Capitalization Adjustments, stockholder approval will be required for any amendment of the Plan for which stockholder approval is required by Applicable Law. 

(b) The Board may suspend or terminate the Plan at any time. No Purchase Rights may be granted under the Plan while the Plan is
suspended or after it is terminated. 
 Any benefits, privileges, entitlements and obligations under any outstanding Purchase Rights granted
before an amendment, suspension or termination of the Plan will not be materially impaired by any such amendment, suspension or termination except (i) with the consent of the person to whom such Purchase Rights were granted, (ii) as
necessary to facilitate compliance with Applicable Law, listing requirements, or governmental regulations (including, without limitation, the provisions of Section 423 of the Code and the regulations and other interpretive guidance issued
thereunder relating to Employee Stock Purchase Plans) including without limitation any such regulations or other guidance that may be issued or amended after the date the Plan is adopted by the Board, or (iii) as necessary to obtain or maintain
favorable tax, listing, or regulatory treatment. To be clear, the Board may amend outstanding Purchase Rights without a Participant’s consent if such amendment is necessary to ensure that the Purchase Right and/or the Plan complies with the
requirements of Section 423 of the Code with respect to the 423 Component or with respect to other Applicable Law. Notwithstanding anything in the Plan or any Offering Document to the contrary, the Board will be entitled to: (i) establish
the exchange ratio applicable to amounts withheld in a currency other than U.S. dollars; (ii) permit Contributions in excess of the amount designated by a Participant in order to adjust for mistakes in the Company’s processing of properly
completed Contribution elections; (iii) establish reasonable waiting and adjustment periods and/or accounting and crediting procedures to ensure that amounts applied toward the purchase of Common Stock for each Participant properly correspond
with amounts withheld from the Participant’s Contributions; (iv) amend any outstanding Purchase Rights or clarify any ambiguities regarding the terms of any Offering to enable the Purchase Rights to qualify under and/or comply with
Section 423 of the Code with respect to the 423 Component; and (v) establish other limitations or procedures as the Board determines in its sole discretion advisable that are consistent with the Plan. The actions of the Board pursuant to
this paragraph will not be considered to alter or impair any Purchase Rights granted under an Offering as they are part of the initial terms of each Offering and the Purchase Rights granted under each Offering. 

  
 8 

 13. TAX QUALIFICATION; TAX WITHHOLDING.

 (a) Although the Company may endeavor to (i) qualify a Purchase Right for special tax treatment under the laws of the United
States or jurisdictions outside of the United States or (ii) avoid adverse tax treatment, the Company makes no representation to that effect and expressly disavows any covenant to maintain special or to avoid unfavorable tax treatment,
notwithstanding anything to the contrary in this Plan. The Company will be unconstrained in its corporate activities without regard to the potential negative tax impact on Participants. 

(b) Each Participant will make arrangements, satisfactory to the Company and any applicable Related Corporation, to enable the Company
or the Related Corporation to fulfill any withholding obligation for Tax-Related Items. Without limitation to the foregoing, in the Company’s sole discretion and subject to Applicable Law, such
withholding obligation may be satisfied in whole or in part by (i) withholding from the Participant’s salary or any other cash payment due to the Participant from the Company or a Related Corporation; (ii) withholding from the
proceeds of the sale of shares of Common Stock acquired under the Plan, either through a voluntary sale or a mandatory sale arranged by the Company; or (iii) any other method deemed acceptable by the Board. The Company shall not be required to
issue any shares of Common Stock under the Plan until such obligations are satisfied. 
 14. EFFECTIVE DATE
OF PLAN. 
 The Plan will become effective immediately prior to and contingent upon the IPO Date. No
Purchase Rights will be exercised unless and until the Plan has been approved by the stockholders of the Company, which approval must be within 12 months before or after the date the Plan is adopted (or if required under Section 12(a) above,
materially amended) by the Board. 
 15. MISCELLANEOUS PROVISIONS. 

(a) Proceeds from the sale of shares of Common Stock pursuant to Purchase Rights will constitute general funds of the Company. 

(b) A Participant will not be deemed to be the holder of, or to have any of the rights of a holder with respect to, shares of Common
Stock subject to Purchase Rights unless and until the Participant’s shares of Common Stock acquired upon exercise of Purchase Rights are recorded in the books of the Company (or its transfer agent). 

(c) The Plan and Offering do not constitute an employment contract. Nothing in the Plan or in the Offering will in any way alter the at
will nature of a Participant’s employment or amend a Participant’s employment contract, if applicable, or be deemed to create in any way whatsoever any obligation on the part of any Participant to continue in the employ of the Company or a
Related Corporation or an Affiliate, or on the part of the Company, a Related Corporation or an Affiliate to continue the employment of a Participant. 

(d) The provisions of the Plan will be governed by the laws of the State of Delaware without resort to that state’s conflicts of
laws rules. 
 (e) If any particular provision of the Plan is found to be invalid or otherwise unenforceable, such provision will not
affect the other provisions of the Plan, but the Plan will be construed in all respects as if such invalid provision were omitted. 

  
 9 

 (f) If any provision of the Plan does not comply with Applicable Law, such provision
shall be construed in such a manner as to comply with Applicable Law. 
 16. DEFINITIONS. 

As used in the Plan, the following definitions will apply to the capitalized terms indicated below: 

(a) “423 Component” means the part of the Plan, which excludes the
Non-423 Component, pursuant to which Purchase Rights that satisfy the requirements for an Employee Stock Purchase Plan may be granted to Eligible Employees. 

(b) “Affiliate” means any entity, other than a Related Corporation, whether now or subsequently established,
which is at the time of determination, a “parent” or “subsidiary” of the Company as such terms are defined in Rule 405 promulgated under the Securities Act. The Board may determine the time or times at which “parent” or
“subsidiary” status is determined within the foregoing definition. 
 (c) “Applicable Law” means the
Code and any applicable securities, federal, state, foreign, material local or municipal or other law, statute, constitution, principle of common law, resolution, ordinance, code, edict, decree, rule, listing rule, regulation, judicial decision,
ruling or requirement issued, enacted, adopted, promulgated, implemented or otherwise put into effect by or under the authority of any Governmental Body (or under the authority of the Nasdaq Stock Market or the Financial Industry Regulatory
Authority). 
 (d) “Board” means the board of directors of the Company. 

(e) “Capitalization Adjustment” means any change that is made in, or other events that occur with respect to,
the Common Stock subject to the Plan or subject to any Purchase Right after the date the Plan is adopted by the Board without the receipt of consideration by the Company through merger, consolidation, reorganization, recapitalization,
reincorporation, stock dividend, dividend in property other than cash, large nonrecurring cash dividend, stock split, liquidating dividend, combination of shares, exchange of shares, change in corporate structure or other similar equity
restructuring transaction, as that term is used in Financial Accounting Standards Board Accounting Standards Codification Topic 718 (or any successor thereto). Notwithstanding the foregoing, the conversion of any convertible securities of the
Company will not be treated as a Capitalization Adjustment. 
 (f) “Code” means the Internal Revenue
Code of 1986, as amended, including any applicable regulations and guidance thereunder. 
 (g)
“Committee” means a committee of one or more members of the Board to whom authority has been delegated by the Board in accordance with Section 2(c). 

(h) “Common Stock” means the common stock of the Company. 

(i) “Company” means Lyell Immunopharma, Inc., a Delaware corporation, and any successor thereto. 

(j) “Contributions” means the payroll deductions and other additional payments specifically provided for in the
Offering that a Participant contributes to fund the exercise of a Purchase Right. A Participant may make additional payments into his or her account if specifically provided for in the Offering, and then only if the Participant has not already had
the maximum permitted amount withheld during the Offering through payroll deductions. 

  
 10 

 (k) “Corporate Transaction” means the consummation, in a
single transaction or in a series of related transactions, of any one or more of the following events: 
 (i) a sale or other
disposition of all or substantially all, as determined by the Board in its sole discretion, of the consolidated assets of the Company and its subsidiaries; 

(ii) a sale or other disposition of at least 50% of the outstanding securities of the Company; 

(iii) a merger, consolidation or similar transaction following which the Company is not the surviving corporation; or 

(iv) a merger, consolidation or similar transaction following which the Company is the surviving corporation but the shares of Common
Stock outstanding immediately preceding the merger, consolidation or similar transaction are converted or exchanged by virtue of the merger, consolidation or similar transaction into other property, whether in the form of securities, cash or
otherwise. 
 (l) “Designated 423 Corporation” means any Related Corporation selected by the Board to
participate in the 423 Component. 
 (m) “Designated Company” means any Designated Non-423 Corporation or Designated 423 Corporation, provided, however, that at any given time, a Related Corporation participating in the 423 Component shall not be a Related Corporation participating in the Non-423 Component. 
 (n) “Designated Non-423
Corporation” means any Related Corporation or Affiliate selected by the Board to participate in the Non-423 Component. 

(o) “Director” means a member of the Board. 

(p) “Eligible Employee” means an Employee who meets the requirements set forth in the document(s)
governing the Offering for eligibility to participate in the Offering, provided that such Employee also meets the requirements for eligibility to participate set forth in the Plan. 

(q) “Employee” means any person, including an Officer or Director, who is “employed” for
purposes of Section 423(b)(4) of the Code by the Company or a Related Corporation, or solely with respect to the Non-423 Component, an Affiliate. However, service solely as a Director, or payment of a fee
for such services, will not cause a Director to be considered an “Employee” for purposes of the Plan. 
 (r)
“Employee Stock Purchase Plan” means a plan that grants Purchase Rights intended to be options issued under an “employee stock purchase plan,” as that term is defined in Section 423(b) of the Code.

 (s) “Exchange Act” means the Securities Exchange Act of 1934, as amended and the rules and
regulations promulgated thereunder. 
 (t) “Fair Market Value” means, as of any date, the value of the Common
Stock determined as follows: 

  
 11 

 (i) If the Common Stock is listed on any established stock exchange or traded on any
established market, the Fair Market Value of a share of Common Stock will be the closing sales price for such stock as quoted on such exchange or market (or the exchange or market with the greatest volume of trading in the Common Stock) on the date
of determination, as reported in such source as the Board deems reliable. Unless otherwise provided by the Board, if there is no closing sales price for the Common Stock on the date of determination, then the Fair Market Value will be the closing
sales price on the last preceding date for which such quotation exists. 
 (ii) In the absence of such markets for the Common Stock,
the Fair Market Value will be determined by the Board in good faith in compliance with Applicable Law and, to the extent applicable as determined in the sole discretion of the Board, in a manner that complies with Section 409A of the Code. 

(iii) Notwithstanding the foregoing, for any Offering that commences on the IPO Date, the Fair Market Value of the shares of Common
Stock on the Offering Date will be the price per share at which shares are first sold to the public in the Company’s initial public offering as specified in the final prospectus for that initial public offering. 

(u) “Governmental Body” means any: (i) nation, state, commonwealth, province,
territory, county, municipality, district or other jurisdiction of any nature; (ii) federal, state, local, municipal, foreign or other government; (iii) governmental or regulatory body, or quasi-governmental body of any nature (including
any governmental division, department, administrative agency or bureau, commission, authority, instrumentality, official, ministry, fund, foundation, center, organization, unit, body or entity and any court or other tribunal, and for the avoidance
of doubt, any tax authority) or other body exercising similar powers or authority; or (iv) self-regulatory organization (including the Nasdaq Stock Market and the Financial Industry Regulatory Authority). 

(v) “IPO Date” means the date of the underwriting agreement between the Company and the underwriters
managing the initial public offering of the Common Stock, pursuant to which the Common Stock is priced for the initial public offering. 

(w) “Non-423 Component” means the part of the Plan, which excludes the 423 Component,
pursuant to which Purchase Rights that are not intended to satisfy the requirements for an Employee Stock Purchase Plan may be granted to Eligible Employees. 

(x) “Offering” means the grant to Eligible Employees of Purchase Rights, with the exercise of those
Purchase Rights automatically occurring at the end of one or more Purchase Periods. The terms and conditions of an Offering will generally be set forth in the “Offering Document” approved by the Board for that Offering. 

(y) “Offering Date” means a date selected by the Board for an Offering to commence. 

(z) “Officer” means a person who is an officer of the Company or a Related Corporation within the
meaning of Section 16 of the Exchange Act. 
 (aa) “Participant” means an Eligible Employee who
holds an outstanding Purchase Right. 
 (bb) “Plan” means this Lyell Immunopharma, Inc. 2021 Employee
Stock Purchase Plan, as amended from time to time, including both the 423 Component and the Non-423 Component. 

  
 12 

 (cc) “Purchase Date” means one or more dates during an
Offering selected by the Board on which Purchase Rights will be exercised and on which purchases of shares of Common Stock will be carried out in accordance with such Offering. 

(dd) “Purchase Period” means a period of time specified within an Offering, generally beginning on the Offering
Date or on the first Trading Day following a Purchase Date, and ending on a Purchase Date. An Offering may consist of one or more Purchase Periods. 

(ee) “Purchase Right” means an option to purchase shares of Common Stock granted pursuant to the Plan.

 (ff) “Related Corporation” means any “parent corporation” or “subsidiary
corporation” of the Company whether now or subsequently established, as those terms are defined in Sections 424(e) and (f), respectively, of the Code. 

(gg) “Securities Act” means the Securities Act of 1933, as amended. 

(hh) “Tax-Related Items” means any income tax, social insurance, payroll
tax, fringe benefit tax, payment on account or other tax-related items arising out of or in relation to a Participant’s participation in the Plan, including, but not limited to, the exercise of a Purchase
Right and the receipt of shares of Common Stock or the sale or other disposition of shares of Common Stock acquired under the Plan. 

(ii) “Trading Day” means any day on which the exchange(s) or market(s) on which shares of Common Stock
are listed, including but not limited to the NYSE, Nasdaq Global Select Market, the Nasdaq Global Market, the Nasdaq Capital Market or any successors thereto, is open for trading. 

  
 13

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