REVB CFO awarded 390,614 RS under 2021 plan, vests over 1 year

Rhea-AI Filing Summary

Revelation Biosciences (REVB) reported an insider equity award for its Chief Financial Officer, Chester S. Zygmont III. On 10/29/2025, the CFO acquired 390,614 shares of common stock as a restricted stock grant under the 2021 Equity Incentive Plan at a stated price of $1.28 per share. The award vests quarterly over one year from the date of grant.

Following the reported transaction, the filing lists 395,645 shares of common stock indirectly held by The Zygmont Family Trust, and additional small indirect holdings of 5,026 shares by the trust and 5 shares by Czeslaw Capital Fund, LLC. The filing indicates the use of indirect ownership structures (trust and LLC) and confirms the CFO’s status as an officer.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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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 for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Zygmont Chester Stanley III

(Last) (First) (Middle)

C/O REVELATION BIOSCIENCES, INC.

4660 LA JOLLA VILLAGE DR., SUITE 100

(Street)

SAN DIEGO CA 92122

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
REVELATION BIOSCIENCES, INC. [ REVB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
10/29/2025

4. If Amendment, Date of 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

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
Common Stock								5,026	I	By Trust(2)
Common Stock								5	I	By LLC(3)
Common Stock(1)	10/29/2025		A		390,614	A	$1.28	395,645	I	By Trust(2)

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 Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. Restricted Stock Grant under the 2021 Equity Incentive Plan. Vests quarterly over one year from the date of grant.

2. Shares are held by The Zygmont Family Trust Dated October 25, 2016, with respect to which Chester S Zygmont III is a trustee.

3. Shares are held by Czeslaw Capital Fund, LLC. Chester S Zygmont III is the sole manager of Czeslaw Capital Fund, LLC.

	/s/ J.P. Galda, as attorney-in-fact for Chester S Zygmont III	10/31/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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