Company: IMRX
Filing Date: 2025-09-25
Form Type: 424B5
Source: 0001104659-25-093438
Chunk: 28

Company: Immuneering Corp
Filing Date: 2025-09-25
Form: 424B5
Chunk 28
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 stock, proposed Treasury Regulations eliminate FATCA withholding on payments of gross proceeds entirely. Taxpayers generally may rely on these proposed Treasury Regulations until final Treasury Regulations are issued.

Prospective investors should consult their tax advisors regarding the potential application of withholding under FATCA to their investment in our Securities.

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TABLE OF CONTENTS

UNDERWRITING Subject to the terms and conditions set forth in the underwriting agreement, dated September 24, 2025, between us and Leerink Partners LLC and Oppenheimer & Co. Inc. (the “underwriters”), we have agreed to sell to the underwriters, and the underwriters have agreed, to purchase from us, 18,959,914 shares of Class A common stock.

| Name                   | ​ | ​ | Number ofShares |   |            |   | ​ |
| Leerink Partners LLC   | ​ | ​ | ​               | ​ | 12,134,345 | ​ | ​ |
| Oppenheimer & Co. Inc. | ​ | ​ | ​               | ​ |  6,825,569 | ​ | ​ |
| Total:                 | ​ | ​ | ​               | ​ | 18,959,914 | ​ | ​ |

The underwriting agreement provides that the obligations of the underwriters are subject to certain conditions precedent such as the receipt by the underwriters of officers’ certificates and legal opinions and approval of certain legal matters by their counsel. The underwriting agreement provides that the underwriters will purchase all of the shares of Class A common stock if any of the shares are purchased. If an underwriter defaults, the underwriting agreement provides that the purchase commitments of the nondefaulting underwriters may be increased or the underwriting agreement may be terminated. We have agreed to indemnify the underwriters and certain of their respective controlling persons against certain liabilities, including liabilities under the Securities Act, and to contribute to payments that the underwriters may be required to make in respect of those liabilities. The underwriters have advised us that, following the completion of this offering, they currently intend to make a market in the shares of Class A common stock as permitted by applicable laws and regulations. However, none of the underwriters is not obligated to do so, and any of the underwriters may discontinue any market-making activities at any time without notice in their respective sole discretion. Accordingly, no assurance can be given as to the liquidity of the trading market for the Class A common stock that you