Company: IMRX
Filing Date: 2025-08-13
Form Type: S-3
Source: 0001104659-25-077655
Chunk: 3

Company: Immuneering Corp
Filing Date: 2025-08-13
Form: S-3
Chunk 3
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 or through a combination of these methods. If any underwriters, dealers or agents are involved in the sale of any of the securities, their names and any applicable purchase price, fee, commission or discount arrangement between or among them will be set forth, or will be calculable from the information set forth, in the applicable prospectus supplement. See the sections of this prospectus entitled “About this Prospectus” and “Plan of Distribution” for more information. No securities may be sold without delivery of this prospectus and the applicable prospectus supplement describing the method and terms of the offering of such securities.

INVESTING IN OUR SECURITIES INVOLVES RISKS. SEE THE “RISK FACTORS” ON PAGE 6OF THIS PROSPECTUS AND ANY SIMILAR SECTION CONTAINED IN THE APPLICABLE PROSPECTUS SUPPLEMENT CONCERNING FACTORS YOU SHOULD CONSIDER BEFORE INVESTING IN OUR SECURITIES.

Our Class A common stock is listed on the Nasdaq Global Market under the symbol “IMRX.” On August 12, 2025, the last reported sale price of our Class A common stock on the Nasdaq Global Market was $3.25 per share.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.**

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

TABLE OF CONTENTS

TABLE OF CONTENTS

| ​ | ABOUT THIS PROSPECTUS                                           | ​ | ​ | ​ | ​ |  1 | ​ | ​ |
| ​ | SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS               | ​ | ​ | ​ | ​ |  2 | ​ | ​ |
| ​ | WHERE YOU CAN FIND MORE INFORMATION; INCORPORATION BY REFERENCE | ​ | ​ | ​ | ​ |  3 | ​ | ​ |
| ​ | THE COMPANY                                                     | ​ | ​ | ​ | ​ |  5 | ​ | ​ |
| ​ | RISK FACTORS                                                    | ​ | ​ | ​ | ​ |  6 | ​ | ​ |
| ​ | USE OF PROCEEDS                                                 | ​ | ​ | ​ | ​ |  7 | ​ | ​ |
| ​ | DESCRIPTION OF CAPITAL STOCK                                    | ​ | ​ | ​ | ​ |  8 | ​ | ​ |
|