Company: REVB
Filing Date: 2025-09-16
Form Type: S-3
Source: 0001193125-25-205145
Chunk: 0

Company: REVELATION BIOSCIENCES, INC.
Filing Date: 2025-09-16
Form: S-3
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As filed with the Securities and Exchange Commission on September 16, 2025 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Revelation Biosciences, Inc. (Exact name of registrant as specified in its charter)

| Delaware                                                       |     | 84-3898466                          |
| (State or other jurisdiction of incorporation or organization) |     | -I.R.S. Employer Identification No. |

4660 La Jolla Village Drive, Suite 100 San Diego, California 92122 (650) 800-3717 (Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices) James Rolke Chief Executive Officer Revelation Biosciences, Inc. 4660 La Jolla Village Drive, Suite 100 San Diego, California 92122 (650) 800-3717 (Name, address, including zip code, and telephone number, including area code, of agent for service) Copies to: Joseph P. Galda J.P. Galda & Co. 40 East Montgomery Avenue LTW 220 Ardmore, PA 19003 (215) 815-1534 Approximate date of commencement of proposed sale to public: From time to time after this registration statement becomes effective, as determined by the selling stockholders. If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box: ☐ If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box. ☒ If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act of 1933 registration statement number of the earlier effective registration statement for the same offering. ☐ If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐ If this Form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission