Company: IMRX
Filing Date: 2025-08-13
Form Type: S-3
Source: 0001104659-25-077655
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Company: Immuneering Corp
Filing Date: 2025-08-13
Form: S-3
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TABLE OF CONTENTS

As filed with the Securities and Exchange Commission on August 13, 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 IMMUNEERING CORPORATION (Exact name of registrant as specified in its charter)

| ​ | Delaware                                                       
 (State or other jurisdiction ofincorporation or organization)​ | ​ | ​ | 26-1976972                             
 (I.R.S. EmployerIdentification Number) | ​ |

245 Main Street, Second Floor
Cambridge, MA 02142
(617) 500-8080 (Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices) Benjamin J. Zeskind, Ph.D.
Chief Executive Officer
Immuneering Corporation
245 Main Street, Second Floor
Cambridge, MA 02142
Telephone: (617) 500-8080 (Name, Address, including zip code, and telephone number, including area code, of agent for service) Copies to : Wesley C. Holmes
Evan G. Smith
Latham & Watkins LLP
200 Clarendon Street
Boston, MA 02116
(617) 948-6000 APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: From time to time after the effective date of this registration statement. 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 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, 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