Company: REVB
Filing Date: 2025-09-30
Form Type: 424B3
Source: 0001193125-25-225254
Chunk: 0

Company: REVELATION BIOSCIENCES, INC.
Filing Date: 2025-09-30
Form: 424B3
Chunk 0
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As filed Pursuant to Rule 424(b)(3)

Registration No. 333-290309

PROSPECTUS

<div align='center'>Revelation Biosciences, Inc.

13,065,000 Shares of Common Stock</div>

This prospectus relates to the resale, from time to time, of up to 13,065,000 shares of common stock, par value $0.001 per share, by the selling stockholders identified in this prospectus under “Selling Stockholders” (the “Selling Stockholders”) to be issued upon the exercise of common stock purchase warrants (the “Class I Common Stock Warrants”) pursuant to an inducement offer letter agreement the Company entered into with the Selling Stockholders on September 10, 2025 (the “Inducement Letter”). The Class I Common Stock Warrants are exercisable after and for five years from the date of stockholder approval at an exercise price of $2.20 per share. We are not selling any shares of common stock under this prospectus and will not receive any proceeds from the sale of the shares of common stock. We may, however, receive proceeds from any warrants that are exercised through the payment of the exercise price in cash, in a maximum amount of up to approximately $28,743,000. We are paying however all of the fees and expenses in connection with the registration of the shares of common stock.

Our common stock is listed on the Nasdaq Capital Market under the symbol “REVB.” On September 11, 2025, the last reported sale price of our common stock on the Nasdaq Capital Market was $2.00.

Investing in our securities involves a high degree of risk. You should carefully consider the risk factors incorporated by reference from our filings with the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended, including particularly the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024, before you invest in our securities.

<div align='center'>The date of this prospectus is September 30, 2025</div>

TABLE OF CONTENTS

|                                                   | Page |
| ABOUT THIS PROSPECTUS                             |    1 |
| SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS |    2 |
| PROSPECTUS SUMMARY                                |    3 |
| ABOUT THE COMPANY                                 |    3 |
| SUMMARY OF THE OFFERING                           |    3 |
| R