Bolt Biotherapeutics Inc.

12/16/2025 | Press release | Distributed by Public on 12/16/2025 16:12

Statement of Changes in Beneficial Ownership (Form 4)

FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Yonehiro Grant
2. Issuer Name and Ticker or Trading Symbol
Bolt Biotherapeutics, Inc. [BOLT]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chief Operating Officer
(Last) (First) (Middle)
C/O BOLT BIOTHERAPEUTICS, INC., 900 CHESAPEAKE DRIVE
3. Date of Earliest Transaction (Month/Day/Year)
12/12/2025
(Street)
REDWOOD CITY, CA 94063
4. If Amendment, Date Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City) (State) (Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 1474 (9-02)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (Right to Buy) $5.44 12/12/2025 A 3,214 (1) 01/17/2027 Common Stock 3,214 (2) 3,214 D
Employee Stock Option (Right to Buy) $42 12/12/2025 D 3,214 (1) 01/17/2027 Common Stock 3,214 (2) 0 D
Employee Stock Option (Right to Buy) $5.44 12/12/2025 A 660 (1) 01/16/2028 Common Stock 660 (3) 660 D
Employee Stock Option (Right to Buy) $40.6 12/12/2025 D 660 (1) 01/17/2028 Common Stock 660 (3) 0 D
Employee Stock Option (Right to Buy) $5.44 12/12/2025 A 822 (1) 04/03/2028 Common Stock 822 (4) 822 D
Employee Stock Option (Right to Buy) $40.6 12/12/2025 D 822 (1) 04/03/2028 Common Stock 822 (4) 0 D
Employee Stock Option (Right to Buy) $5.44 12/12/2025 A 1,653 (1) 01/10/2029 Common Stock 1,653 (5) 1,653 D
Employee Stock Option (Right to Buy) $44.8 12/12/2025 D 1,653 (1) 01/10/2029 Common Stock 1,653 (5) 0 D
Employee Stock Option (Right to Buy) $5.44 12/12/2025 A 4,642 (1) 11/12/2029 Common Stock 4,642 (6) 4,642 D
Employee Stock Option (Right to Buy) $54.6 12/12/2025 D 4,642 (1) 11/12/2029 Common Stock 4,642 (6) 0 D
Employee Stock Option (Right to Buy) $5.44 12/12/2025 A 2,142 (1) 09/02/2030 Common Stock 2,142 (7) 2,142 D
Employee Stock Option (Right to Buy) $86.8 12/12/2025 D 2,142 (1) 09/02/2030 Common Stock 2,142 (7) 0 D
Employee Stock Option (Right to Buy) $5.44 12/12/2025 A 4,999 (1) 02/03/2031 Common Stock 4,999 (8) 4,999 D
Employee Stock Option (Right to Buy) $400 12/12/2025 D 4,999 (1) 02/03/2031 Common Stock 4,999 (8) 0 D
Employee Stock Option (Right to Buy) $5.44 12/12/2025 A 9,499 (1) 02/17/2032 Common Stock 9,499 (9) 9,499 D
Employee Stock Option (Right to Buy) $61.6 12/12/2025 D 9,499 (1) 02/17/2032 Common Stock 9,499 (9) 0 D
Employee Stock Option (Right to Buy) $5.44 12/12/2025 A 11,399 (10) 02/26/2033 Common Stock 11,399 (11) 11,399 D
Employee Stock Option (Right to Buy) $31.8 12/12/2025 D 11,399 (10) 02/26/2033 Common Stock 11,399 (11) 0 D
Employee Stock Option (Right to Buy) $5.44 12/12/2025 A 11,749 (12) 03/03/2034 Common Stock 11,749 (13) 11,749 D
Employee Stock Option (Right to Buy) $25.4 12/12/2025 D 11,749 (12) 03/03/2034 Common Stock 11,749 (13) 0 D
Employee Stock Option (Right to Buy) $5.44 12/12/2025 A 7,749 (14) 07/22/2034 Common Stock 7,749 (15) 7,749 D
Employee Stock Option (Right to Buy) $14.602 12/12/2025 D 7,749 (14) 07/22/2034 Common Stock 7,749 (15) 0 D
Employee Stock Option (Right to Buy) $5.44 12/12/2025 A 17,499 (16) 04/30/2035 Common Stock 17,499 (17) 17,499 D
Employee Stock Option (Right to Buy) $7.02 12/12/2025 D 17,499 (16) 04/30/2035 Common Stock 17,499 (17) 0 D

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Yonehiro Grant
C/O BOLT BIOTHERAPEUTICS, INC.
900 CHESAPEAKE DRIVE
REDWOOD CITY, CA 94063
Chief Operating Officer

Signatures

/s/ William P. Quinn, Attorney-in-Fact 12/16/2025
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The option is fully vested and exercisable.
(2) The reporting person agreed to cancellation of an option granted on January 18, 2017, in exchange for a new option having a lower price.
(3) The reporting person agree to cancellation of an option granted on January 17, 2018, in exchange for a new option having a lower exercise price.
(4) The reporting person agreed to cancellation of an option granted on April 4, 2018, in exchange for a new option having a lower exercise price.
(5) The reporting person agreed to cancellation of an option granted on January 11, 2019, in exchange for a new option having a lower exercise price.
(6) The reporting person agreed to cancellation of an option granted on November 13, 2019, in exchange for a new option having a lower exercise price.
(7) The reporting person agreed to cancellation of an option granted on September 3, 2020, in exchange for a new option having a lower exercise price.
(8) The reporting person agreed to cancellation of an option granted on February 4, 2021, in exchange for a new option having a lower exercise price.
(9) The reporting person agreed to cancellation of an option granted on February 18, 2022, in exchange for a new option having a lower exercise price.
(10) For so long as the Reporting Person continuously provides services to the Issuer this option will vest with respect to the shares as follows: 1/36th of the Shares will vest upon the Reporting Person completing each month of continuous service following January 1, 2023.
(11) The reporting person agreed to cancellation of an option granted on February 27, 2023, in exchange for a new option having a lower exercise price.
(12) For so long as the Reporting Person continuously provides services to the Issuer this option will vest with respect to the shares as follows: 1/36th of the Shares will vest upon the Reporting Person completing each month of continuous service following January 1, 2024.
(13) The reporting person agreed to cancellation of an option granted on March 4, 2024, in exchange for a new option having a lower exercise price.
(14) For so long as the Reporting Person continuously provides services to the Issuer this option will vest with respect to the shares as follows: 1/36th of the Shares will vest upon the Reporting Person completing each month of continuous service following July 15, 2024.
(15) The reporting person agreed to cancellation of an option granted on July 23, 2024, in exchange for a new option having a lower exercise price.
(16) For so long as the Reporting Person continuously provides services to the Issuer this option will vest with respect to the shares as follows: 1/36th of the Shares will vest upon the Reporting Person completing each month of continuous service following January 1, 2025.
(17) The reporting person agreed to cancellation of an option granted on May 1, 2025, in exchange for a new option having a lower exercise price.
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure. Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.
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