Document:

EX-10.6

 Exhibit 10.6 

BOLT BIOTHERAPEUTICS, INC. 

RSU AWARD GRANT NOTICE 

(2021 EQUITY INCENTIVE PLAN) 

Bolt Biotherapeutics, Inc. (the “Company”) has awarded to you (the “Participant”) the number of restricted
stock units specified and on the terms set forth below in consideration of your services (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 Award Agreement (the “Agreement”), 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. 
  

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

  

			
	Vesting Schedule:	  	[__________________________________________________________________]. Notwithstanding the foregoing, vesting shall terminate upon the Participant’s termination of Continuous Service.
		
	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 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. 

 

	 	•	 To the fullest extent permitted under the Plan and applicable law, withholding taxes applicable to the RSU
Award will be satisfied through the sale of a number of the shares issuable in settlement of the RSU Award as determined in accordance with Section 4 of the Agreement and the remittance of the cash proceeds to the Company. Under the Agreement,
the Company or, if different, your employer shall make payment from the cash proceeds of this sale directly to the appropriate tax or social security authorities in an amount equal to the taxes required to be remitted. The mandatory sale of
shares to cover withholding taxes is imposed by the Company on you in connection with your receipt of this RSU Award.  

  

	 	•	 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, (ii) any written employment
agreement, offer letter, severance agreement, written severance plan or policy, or other written agreement between the Company 

 
[Employee—Mandatory Sell to Cover] 
  

	 	
and you in each case that specifies the terms that should govern this RSU Award, and (iii) any clawback policy that the Company is required to adopt pursuant to the listing standards of any
national securities exchange or association on which the Company’s securities are listed or as is otherwise required by the Dodd-Frank Wall Street Reform and Consumer Protection Act or other Applicable Law and any clawback policy that the
Company otherwise adopts, to the extent applicable and permissible under Applicable Law. 

  

	 	•	 If you have not actively accepted the RSU Award within 90 days after the Date of Grant set forth in this Grant
Notice, you will be deemed to have accepted the RSU Award, subject to all of the terms and conditions of the RSU Award Agreement. 

  

							
	BOLT BIOTHERAPEUTICS, INC. 	  	PARTICIPANT:
			
	By:	 	  
	  	  

		 	Signature	  		  	Signature
				
	Title:	 	  
	  	Date:	  	  

				
	Date:	 	  
	  		  	

 BOLT BIOTHERAPEUTICS, INC. 

2021 EQUITY INCENTIVE PLAN 

AWARD AGREEMENT (RSU AWARD) 

As reflected by your Restricted Stock Unit Grant Notice (“Grant Notice”) Bolt Biotherapeutics, 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 Award Agreement for your RSU Award (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, including but not limited to the provisions in: 
 (a) Section 6 of the Plan regarding the impact of a Capitalization
Adjustment, dissolution, liquidation, or Corporate Transaction on your RSU Award; 
 (b) Section 9(e) of the Plan regarding the
Company’s retained rights to terminate your Continuous Service notwithstanding the grant of the RSU Award; and 
 (c)
Section 8(c) of the Plan regarding the tax consequences of your RSU Award. 
 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, 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. 

  
 1. 

 4. WITHHOLDING OBLIGATIONS. 

(a) You acknowledge that, regardless of any action taken by the Company, or if different, the Affiliate employing or engaging you (the
“Employer”), the ultimate liability for all income tax (including U.S. federal, state, and local taxes and/or non-U.S. taxes), social insurance, payroll tax, fringe benefits tax,
payment on account or other tax-related items related to your participation in the Plan and legally applicable to you (the “Tax-Related Items”)
is and remains your responsibility and may exceed the amount, if any, actually withheld by the Company or the Employer. You further acknowledge that the Company and/or the Employer (i) make no representations or undertakings regarding the
treatment of any Tax-Related Items in connection with any aspect of the RSU Award, including, but not limited to, the grant of the RSU Award, the vesting of the RSU Award, the issuance of shares in settlement
of vesting of the RSU Award, the subsequent sale of any shares of Common Stock acquired pursuant to the RSU Award and the receipt of any dividends or Dividend Units; and (ii) do not commit to and are under no obligation to reduce or eliminate
your liability for Tax-Related Items. Further, if you become subject to taxation in more than one country, you acknowledge that the Company and/or the Employer (or former employer, as applicable) may be
required to withhold or account for Tax-Related Items in more than one country. 
 (b) On
each vesting date, and on or before the time you receive a distribution of the shares underlying your Restricted Stock Units, and at any other time as reasonably requested by the Company in accordance with Applicable Law, you agree to make adequate
provision for any sums required to satisfy the withholding obligations of the Company, the Employer or any Affiliate in connection with any Tax-Related Items that arise in connection with your RSU Award (the
“Withholding Taxes”). The Company shall arrange a mandatory sale (on your behalf pursuant to your authorization under this section and without further consent) of the shares of Common Stock issued in settlement upon the
vesting of your Restricted Stock Units in an amount necessary to satisfy the Withholding Taxes and shall satisfy the Withholding Taxes by withholding from the proceeds of such sale (the “Mandatory Sell to Cover”). You hereby
acknowledge and agree that the Company shall have the authority to administer the Mandatory Sell to Cover arrangement in its sole discretion with a registered broker-dealer that is a member of the Financial Industry Regulatory Authority (a
“FINRA Dealer”) as the Company may select as the agent (the “Agent”) who will sell on the open market at the then prevailing market price(s), as soon as practicable on or after each date on which your
Restricted Stock Units vest, the number (rounded up to the next whole number) of the shares of Common Stock to be delivered to you in connection with the vesting of the Restricted Stock Units sufficient to generate proceeds to cover (A) the
Withholding Taxes that you are required to pay pursuant to the Plan and this Agreement as a result of the vesting of the Restricted Stock Units (or shares being issued thereunder, as applicable) and (B) all applicable fees and commissions due
to, or required to be collected by, the Agent with respect thereto any remaining funds shall be remitted to you. 
 (c) If, for any
reason, such Mandatory Sell to Cover does not result in sufficient proceeds to satisfy the Withholding Taxes, the Company or an Affiliate may, in its sole discretion, satisfy all or any portion of the Withholding Taxes relating to your RSU Award by
any of the following means or by a combination of such means: (i) withholding from any compensation otherwise payable to you by the Company or the Employer; (ii) causing you to tender a cash payment (which may be in the form of a check,
electronic wire transfer or other method permitted by the Company); or (iii) withholding shares of Common Stock from the shares of Common Stock issued or otherwise issuable to you in connection with your Restricted Stock Units with a fair
market value (measured as of the date shares of Common Stock are issued to you) equal to the amount of such Withholding Taxes; provided, however, that the number of such shares of Common Stock so withheld will not exceed the amount necessary to
satisfy the Company’s required tax withholding obligations using the maximum statutory withholding rates for federal, state, local and foreign tax purposes, including payroll taxes, that are applicable to supplemental taxable income; and 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 Company’s Board or Compensation
Committee. 

  
 2. 

 (d) Unless the tax withholding obligations of the Company and/or any Affiliate with
respect to the Tax-Related Items are satisfied, the Company shall have no obligation to deliver to you any Common Stock. 

(e) In the event the Company’s obligation to withhold arises prior to the delivery to you of Common Stock or it is determined
after the delivery of Common Stock to you that the amount of the Tax-Related Items withholding obligation was greater than the amount withheld by the Company or your Employer, you agree to indemnify and hold
the Company and your Employer harmless from any failure by the Company or your Employer to withhold the proper amount. 
 (f) You
acknowledge that the Mandatory Sell to Cover is imposed by the Company on you pursuant to the terms of the RSU Award. 
 (g) The
Company may withhold or account for Tax-Related Items by considering applicable minimum statutory withholding amounts, or other applicable withholding rates, including maximum applicable rates in your
jurisdiction(s). If the maximum rate is used, any over-withheld amount may be refunded to you in cash by the Company or Employer (with no entitlement to the equivalent in shares of Common Stock), or if not refunded, you may seek a refund from the
local tax authorities. You must pay to the Company and/or the Employer any amount of Tax-Related Items that the Company and/or the Employer may be required to withhold or account for as a result of your
participation in the Plan that cannot be satisfied by the means previously described. 
 5. DATE OF
ISSUANCE.  
 (a) Subject to the satisfaction of the withholding obligations set forth in Section 4 of this
Agreement, the Company will deliver to you a number of shares of the Company’s Common Stock equal to the number of vested Restricted Stock Units subject to your RSU Award, including any additional Restricted Stock Units received pursuant to a
Capitalization Adjustment that relate to those vested Restricted Stock Units on the applicable vesting date; provided, however, if such vesting date falls on a date that is not a business day, such delivery date shall instead fall on the next
following business day (the “Original Distribution Date”). 
 (b) Notwithstanding the foregoing, if
(i) selling shares of the Company’s Common Stock in the public market on the Original Distribution Date to satisfy your tax withholding obligation in accordance with Section 4 of this Agreement is prohibited for any reason, and
(ii) the Company elects not to instead satisfy its tax withholding obligations by withholding shares from your distribution, then such shares shall not be delivered on such Original Distribution Date and shall instead be delivered to you on the
earliest of: (1) the first date that you are not prohibited from selling shares of the Company’s Common Stock in the open market, or (2) such earlier date that the Company elects to satisfy its tax withholding obligation by
withholding shares from your distribution; provided, however, that notwithstanding the foregoing, in no event will the shares be delivered to you any later than: (A) December 31 of the calendar year in which the Original Distribution Date
occurs (that is, the last day of the taxable year in which the Original Distribution Date occurs), or (B) if and only if permitted in a manner that complies with 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 are no longer subject to a
“substantial risk of forfeiture” within the meaning of Treasury Regulations Section 1.409A-1(d). Delivery of the shares is intended to comply with the requirements for the short-term deferral
exemption available under Treasury Regulations Section 1.409A-1(b)(4) and shall be construed and administered in such manner. 

  
 3. 

 (c) To the extent the RSU Award is a
Non-Exempt RSU Award, the provisions of Section 11 of the Plan shall apply. 
 6.
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 

7. 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. 
 8. 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 tax liabilities arising from the RSU Award or other Company compensation
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. 

9. 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. 

10. 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. 

11. 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. 

  
 4.EX-10.7

 Exhibit 10.7 

BOLT BIOTHERAPEUTICS, INC. 

2021 EMPLOYEE STOCK PURCHASE PLAN 

ADOPTED BY THE BOARD OF DIRECTORS:
JANUARY 22, 2021 
 APPROVED BY THE STOCKHOLDERS:
JANUARY 25, 2021 
 1. GENERAL 

(a) Purpose. The Company, by means of the Plan, seeks to retain the services of such Employees, to secure and retain the services of
Employees and to provide incentives for such persons to exert maximum efforts for the success of the Company and its Related Corporations. The Plan provides a means by which Eligible Employees of the Company and certain designated Related
Corporations 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. Capitalized terms used in the Plan have the meanings set forth in Section 16. 

(b) Qualified and Non-Qualified Offerings Permitted. 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 Committee, the
Non-423 Component will operate and be administered in the same manner as the 423 Component. 
 2.
ADMINISTRATION. 
 (a) Administration by Committee. The Committee will administer the Plan pursuant to the
delegation of authority to the Committee as set forth in the Committee’s charter, unless otherwise determined by the Board. The Board retains concurrent authority to administer the Plan. To the extent the Board administers the Plan, references
herein to the Committee shall be deemed to refer to the Board except where context dictates otherwise. 
 (b) Powers of Committee. The
Committee 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 of the Company will be eligible to participate in the Plan, (B) whether such Related Corporations will participate in the 423 Component or the Non-423
Component, and (C) to the extent that the Company makes separate Offerings under the 423 Component, in which Offering the Related Corporations in the 423 Component will participate. 

(iii) To construe and interpret the Plan and Purchase Rights, and to establish, amend and revoke rules and regulations for its
administration. The Committee, 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. 

  
 1. 

 (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 Committee 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 Related Corporation designated for participation in the Non-423 Component, do not have to comply with the
requirements of Section 423 of the Code. 
 (c) Delegation of Powers. The Committee will have the power to delegate to a
subcommittee any of the administrative powers the Committee is authorized to exercise (and references to the Committee in this Plan and in any applicable Offering Document will thereafter be to such subcommittee, as applicable, except where context
dictates otherwise), subject, however, to such resolutions, not inconsistent with the provisions of the Plan, as may be adopted from time to time. The Committee retains the authority to concurrently administer the Plan with any subcommittee. The
Committee will have the final power to determine all questions of policy and expediency that may arise in the administration of the Plan. 

(d) Effect of Committee’s Decisions. All determinations, interpretations and constructions made by the Committee 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)
Number of Shares Available. 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 420,000 shares of Common
Stock, plus the number of shares of Common Stock that are automatically added on January 1st of each calendar year for a period of up to ten years, commencing on January 1st of the calendar
year following the year in which the IPO Date occurs 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 31st of the preceding calendar
year, and (ii) 840,000 shares of Common Stock. Notwithstanding the foregoing, the Board may act prior to the first day of any calendar year to provide that there will be no January 1st increase in
the share reserve for such fiscal 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. 

  
 2. 

 (b) Share Recycling. 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) Source of Shares. 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) Offerings. The Committee 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 Committee. Each Offering will be in such form and will contain such terms and
conditions as the Committee 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) Multiple Purchase Rights. 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: (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) Restart Provision Permitted. The Committee 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) General. Purchase Rights may be granted only to Employees of the Company or, as the Committee may designate in accordance with
Section 2(b), to Employees of a Related Corporation. 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, as the case may be, for such continuous period preceding such Offering Date as the Committee may require, but in no event will the required period of continuous employment be equal to or greater
than two years. In addition, the Committee (unless prohibited by Applicable Law) may 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 or the Related Corporation is more than 20 hours per week and more than five months per calendar year or such other criteria as the Committee may determine consistent with Section 423 of the Code with respect to the 423 Component.  

  
 3. 

 (b) Grant of Purchase Rights. The Committee 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 Committee 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) 5% Stockholders. No Employee will be eligible for the grant of any Purchase Rights if, immediately after any such Purchase Rights
are granted, such Employee owns shares 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) $25,000 Limit. As specified by Section 423(b)(8) of the Code, an Eligible Employee may be granted Purchase Rights 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 and Highly Compensated Employees.
Officers of the Company and any designated Related Corporation, if they are otherwise Eligible Employees, will be eligible to participate in Offerings under the Plan. Notwithstanding the foregoing, the Committee 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. 

(f) Non 423 Component Offerings. 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 Committee has determined, in its sole discretion, that participation of
such Eligible Employee(s) is not advisable or practical for any reason. 

  
 4. 

 6. PURCHASE RIGHTS; PURCHASE PRICE. 

(a) Grant and Maximum Contribution Rate. 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 such Eligible Employee’s earnings or with a maximum dollar amount (as specified by the Committee for such Offering)
during the period that begins on the Offering Date (or such later date as the Committee 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) Purchase Dates. The Committee will establish one or more Purchase Dates during an Offering on which Purchase Rights granted for that
Offering will be exercised and Common Stock will be purchased in accordance with such Offering. 
 (c) Purchase Limits. In connection
with each Offering made under the Plan, the Committee 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 number 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 Committee 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) Purchase Price. 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 Common Stock on the Offering Date; or 

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

7. PARTICIPATION; WITHDRAWAL; TERMINATION. 

(a) Enrollment and Contributions. 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, within the time specified in the Offering, an enrollment form provided by the Company. The enrollment form will specify the amount of Contributions not to exceed the maximum
amount specified by the Committee. 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 practicable 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 or required by Applicable Law, a Participant may
thereafter reduce (including to zero) or increase his or her Contributions. If specifically provided in the Offering, in addition to or instead of making Contributions by payroll deductions, a Participant may make Contributions prior to a Purchase
Date through payment by cash, check, wire transfer or such other payment method specified by the Committee for such Offering. 

  
 5. 

 (b) Withdrawals. During an Offering, a Participant may cease making Contributions and
withdraw from the Offering by delivering to the Company 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) Termination of Eligibility. 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 to such individual as soon as practicable all of his or her accumulated but unused Contributions. 

(d) Employee Transfers. Unless otherwise determined by the Committee, 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 Related Corporation that has been designated for participation in the Plan 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 Committee 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) No Transfer of Purchase Rights. 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) No Interest. Unless otherwise specified in the Offering or required by Applicable Law, the Company will have no obligation to pay
interest on Contributions. 
 8. EXERCISE OF PURCHASE RIGHTS. 

(a) Accumulated Contributions. On each Purchase Date, each Participant’s accumulated Contributions will be applied to the purchase
of shares of Common Stock (rounded down to the nearest whole share), 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) Remaining Contributions. 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 and such remaining amount is less than the amount required to purchase one share of Common Stock on the final Purchase Date
of an Offering, then such remaining amount will be held in such Participant’s account for the purchase of Common Stock under the next Offering under the Plan, unless 

  
 6. 

 
such Participant withdraws from or is not eligible to participate in such next Offering, in which case such amount will be distributed to such Participant after the final Purchase Date without
interest (unless the payment of interest is otherwise required by Applicable Law). If the amount of Contributions remaining in a Participant’s account after the purchase of Common Stock is at least equal to the amount required to purchase one
(1) whole share of Common Stock on the final Purchase Date of an Offering, then such remaining amount will be refunded in full to such Participant after the final Purchase Date of such Offering without interest (unless the payment of interest
is otherwise required by Applicable Law). 
 (c) Limitations on Exercise. 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 Laws, as determined by the Company in its sole
discretion, no Purchase Rights will be exercised and all accumulated but unused Contributions will be distributed as soon as practicable to the Participants without interest (unless the payment of interest is otherwise required by Applicable Law).

 9. AUTHORIZATIONS. 

(a) U.S. Participants. With respect to U.S. Participants the Company will seek to obtain from each Governing Entity such authority as
may be required to grant Purchase Rights and issue and sell Common Stock thereunder to such Participants 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 to
U.S. Participants, 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 to such Participants. 

(b) Non-U.S. Participants. With respect to Non-U.S.
Participants the Company may, but is not obligated to, seek to obtain from each Governing Entity such authority as may be required to grant Purchase Rights and issue and sell Common Stock thereunder to such Participants. If the Company does not
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 to Non-U.S. Participants, 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 to such Participants. 

10. PARTICIPANT BENEFICIARIES. 

(a) Beneficiary Designation. 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. 

  
 7. 

 (b) Death of Participant. 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) Capitalization Adjustment. In the event of a Capitalization Adjustment, the Committee 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 automatically increase 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 individual
and any aggregate purchase limits under each ongoing Offering. The Committee will make these adjustments, and its determination will be final, binding and conclusive. 

(b) Corporate Transaction. 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 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) Plan Amendment. The Committee may amend
the Plan at any time in any respect the Committee 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) Suspension or Termination. The Committee 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. 
 (c) No Material
Impairment of Rights. 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 comply with any laws, 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 Committee, or (iii) as necessary to obtain or maintain favorable tax, listing, or regulatory treatment. To be clear, the Committee 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 Laws.

  
 8. 

 (d) Corrections and Administrative Procedures. Notwithstanding anything in the Plan
or any Offering Document to the contrary, the Committee 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 Committee determines
in its sole discretion advisable that are consistent with the Plan. The actions of the Committee 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. 
 13. TAX QUALIFICATION; TAX
WITHHOLDING. 
 (a) No Guaranteed Tax Treatment. 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) Withholding. 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, the amount necessary to satisfy such withholding
obligation may be withheld as determined in the Company’s sole discretion to the extent permitted by Applicable Law: (i) from the Participant’s salary or any other cash payment due to the Participant from the Company or a Related
Corporation, (ii) from the proceeds of the sale of Common Stock acquired under the Plan, either through a voluntary sale or mandatory sale arranged by the Company, or (iii) any other method approved by the Committee. 

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 Committee. 

15. Miscellaneous Provisions. 
 (a)
Electronic Delivery. Any reference herein to a “written” agreement, form, or document will include any agreement, form, or document delivered electronically, filed publicly at www.sec.gov (or any successor website thereto), or posted
on the Company’s intranet (or other shared electronic medium controlled by the Company to which the Participant has access). By participating in the Plan, the Participant consents to receive documents by electronic delivery and to participate
in the Plan through any online electronic system established and maintained by the Company or another third party selected by the Company. The form of delivery of any Common Stock (e.g., a stock certificate or electronic entry evidencing such
shares) shall be determined by the Company. 

  
 9. 

 (b) Use of Proceeds. Proceeds from the sale of shares of Common Stock pursuant to
Purchase Rights will constitute general funds of the Company. 
 (c) Stockholder Rights. 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). 
 (d) No Employment or Other Service Rights. 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, 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 on the part of the Company or a Related Corporation to continue the employment of a Participant. 

(e) Choice of Law. 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. 
 (f) Severability. 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. 

(g) Interpretation. 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) “Applicable Law” means shall mean 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 Exchange or the Financial Industry Regulatory Authority). 

(c) “Board” means the Board of Directors of the Company. 

(d) “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 Committee 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. 

  
 10. 

 (e) “Code” means the U.S. Internal Revenue Code of
1986, as amended, including any applicable regulations and guidance thereunder. 
 (f) “Committee”
means the Compensation Committee of the Board. 
 (g) “Common Stock” means the Company’s common
stock. 
 (h) “Company” means Bolt Biotherapeutics, Inc., a Delaware corporation. 

(i) “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. 
 (j) “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 Committee in its sole discretion, of the
consolidated assets of the Company and its subsidiaries; 
 (ii) a sale or other disposition of more than 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. 
 (k) “Director” means a member of the Board. 

(l) “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. 

(m) “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. 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. 
 (n) “Employee Stock Purchase Plan” means a plan that grants Purchase Rights intended to be
options issued under an “employee stock purchase plan,” within the meaning of Section 423(b) of the Code. 

  
 11. 

 (o) “Exchange” means the stock exchange or established market
on which the Common Stock is listed, including but not limited to the New York Stock Exchange, the Nasdaq Stock Market, or any successors thereto. 

(p) “Exchange Act” means the U.S. Securities Exchange Act of 1934, as amended and the rules and
regulations promulgated thereunder. 
 (q) “Fair Market Value” means, as of any date, the value of the Common
Stock determined as follows: 
 (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, unless otherwise determined by the Committee, the closing sales price for such share of Common 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 Committee deems reliable. Unless otherwise provided by the Committee, 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 Committee in good faith in
compliance with Applicable Laws and in a manner that complies with Sections 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. 
 (r) “Governmental
Body” means any: (a) nation, state, commonwealth, province, territory, county, municipality, district or other jurisdiction of any nature; (b) federal, state, local, municipal, foreign or other government;
(c) 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 (d) self-regulatory organization (including the Exchange and
the Financial Industry Regulatory Authority). 
 (s) “Governing Entity” means each U.S. federal or state,
foreign or other regulatory commission or agency having jurisdiction over the Plan. 
 (t) “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. 

(u) “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. 

(v) “Non-U.S. Participants” means Participants employed by any Related
Corporation that is not incorporated or organized in the United States. 

  
 12. 

 (w) “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. 

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

(y) “Offering Document” means the document that sets forth the terms and conditions of an Offering that
has been approved by the Committee for that Offering. 
 (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 Bolt Biotherapeutics, Inc. 2021 Employee Stock Purchase Plan, as amended from time to time, including both the 423 Component and the Non-423 Component. 

(cc) “Purchase Date” means one or more dates during an Offering selected by the Committee 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 U.S. 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 is open for trading. 

(jj) “U.S. Participants” means Participants employed by the Company or any Related Corporation that is
incorporated or organized in the United States. 

  
 13.

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