Revelation Biosciences (REVB) CEO has shares sold to cover tax withholding

Rhea-AI Filing Summary

Revelation Biosciences, Inc. CEO James Rolke reported a mandatory tax-related share disposition. On the vesting of restricted stock awards, the issuer sold 10,115 shares of common stock on his behalf solely to cover required tax withholding obligations.

The weighted average sale price was $1.13 per share, with individual trades between $1.12 and $1.14. After this tax-withholding transaction, Rolke directly holds 214,738 shares of common stock. The footnotes state he did not exercise investment discretion over these sales.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Rolke James

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	10,115	$1.13	$11K

Holdings After Transaction: Common Stock — 214,738 shares (Direct, null)

Footnotes (1)

1. Represents shares sold by the issuer on behalf of the reporting person solely to satisfy required tax withholding obligations arising upon the vesting of restricted stock awards. The transaction was mandatory and the reporting person did not exercise investment discretion with respect to the sale. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.12 to $1.14, inclusive. The reporting person undertakes to provide to Revelation Biosciences, Inc. (REVB), any security holder of REVB, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Key Figures

Tax-withholding shares disposed: 10,115 shares Weighted average sale price: $1.13/share Shares held after transaction: 214,738 shares +1 more

4 metrics

Tax-withholding shares disposed 10,115 shares Common stock sold by issuer to cover CEO tax obligations

Weighted average sale price $1.13/share Shares sold across trades between $1.12 and $1.14

Shares held after transaction 214,738 shares CEO James Rolke direct common stock holdings post-transaction

Tax-withholding trades price range $1.12–$1.14/share Price range for multiple trades executed for tax withholding

Key Terms

tax withholding, restricted stock awards, weighted average price, Form 4, +1 more

5 terms

tax withholding financial

"solely to satisfy required tax withholding obligations arising upon the vesting"

Tax withholding is the practice of taking a portion of a payment—such as wages, dividends, or sale proceeds—before it reaches the recipient and sending that portion to the tax authority as an advance on the recipient’s eventual tax bill. For investors it matters because withholding reduces immediate cash received and affects after‑tax returns, estimated tax payments, and whether you may owe more or receive a refund when taxes are finally calculated, like having a small automatic savings set aside for your tax bill.

restricted stock awards financial

"arising upon the vesting of restricted stock awards"

Restricted stock awards are company shares given to employees or executives that cannot be sold or transferred until certain conditions — like staying with the company for a set time or meeting performance targets — are met, like a gift that is locked in a safe until rules are satisfied. Investors care because these awards tie management’s pay to company performance, can increase the number of shares outstanding when they become tradable (dilution), and may signal expected future selling pressure or commitment to long-term growth.

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

non-derivative financial

"transaction_type": "non-derivative""

Form 4 Insider Transactions: What Each Field Means →

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Rolke James

(Last) (First) (Middle)

C/O REVELATION BIOSCIENCES, INC.

4660 LA JOLLA VILLAGE DR., SUITE 100

(Street)

SAN DIEGO CALIFORNIA 92122

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/30/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	04/30/2026		F		10,115(1)	D	$1.13(2)	214,738	D

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. Represents shares sold by the issuer on behalf of the reporting person solely to satisfy required tax withholding obligations arising upon the vesting of restricted stock awards. The transaction was mandatory and the reporting person did not exercise investment discretion with respect to the sale.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.12 to $1.14, inclusive. The reporting person undertakes to provide to Revelation Biosciences, Inc. (REVB), any security holder of REVB, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

	/s/ J.P. Galda, as attorney-in-fact for James Rolke	05/01/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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 Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did REVB CEO James Rolke report on this Form 4?

CEO James Rolke reported a mandatory tax-withholding disposition of shares. The issuer sold 10,115 common shares on his behalf to satisfy tax obligations from restricted stock vesting, rather than a discretionary open-market sale by Rolke.

How many Revelation Biosciences (REVB) shares were sold for CEO tax withholding and at what price?

The issuer sold 10,115 REVB common shares for tax withholding at a $1.13 weighted average price. Footnotes note multiple trades occurred between $1.12 and $1.14 per share to meet the CEO’s tax obligations on vesting restricted stock.

Did Revelation Biosciences CEO James Rolke choose to sell these REVB shares?

The filing states the transaction was mandatory and executed by the issuer to cover tax withholding. Rolke “did not exercise investment discretion” regarding these sales, distinguishing them from voluntary open-market selling decisions by the CEO.

How many Revelation Biosciences (REVB) shares does CEO James Rolke hold after this Form 4 transaction?

Following the tax-withholding disposition, CEO James Rolke directly holds 214,738 shares of Revelation Biosciences common stock. This figure reflects his position after the issuer sold 10,115 shares on his behalf to satisfy tax obligations tied to restricted stock vesting.

What does the weighted average price mean in the REVB CEO Form 4 filing?

The reported $1.13 weighted average price reflects multiple trades between $1.12 and $1.14 per share. The footnote explains individual trades occurred within this range and the CEO can provide detailed trade breakdowns upon request to investors or regulators.