Company: INKT
Filing Date: 2025-12-10
Form Type: S-3/A
Source: 0001193125-25-314252
Chunk: 54

Company: MiNK Therapeutics, Inc.
Filing Date: 2025-12-10
Form: S-3/A
Chunk 54
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 in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by
controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

(9) If and when applicable, the undersigned registrant hereby undertakes to file an application for the purpose of determining
the eligibility of the trustee to act under subsection (a) of Section 310 of the Trust Indenture Act in accordance with the rules and regulations prescribed by the Commission under Section 305(b)(2) of the Trust Indenture Act.

II-5

SIGNATURES Pursuant to the requirements of the Securities Act of 1933, as amended, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of New York, New York, on the 10th day of December, 2025.

| MINK THERAPEUTICS, INC. |     |                                                 |
| By:                     |     | /s/ Jennifer S. Buell, Ph.D.                    |
| Name:                   |     | Jennifer S. Buell, Ph.D.                        |
| Title:                  |     | President, Chief Executive Officer and Director |

II-6

Pursuant to the requirements of the Securities Act of 1933, as amended, this registration statement has been signed by the following persons in the capacities and on the dates indicated.

| Signature                    
 /s/ Jennifer S. Buell, Ph.D. 
 Jennifer S. Buell, Ph.D.     
 /s/ Christine M. Klaskin     
 Christine M. Klaskin         |     | Title                                                                         
 President, Chief Executive Officer and Director (Principal Executive Officer) 
 Treasurer (Principal Financial Officer and Principal Accounting Officer)      |     | Date              
 December 10, 2025 
 December 10, 2025 |
|:-----------------------------|:----|:------------------------------------------------------------------------------|:----|:------------------|
| *                            
 Garo H. Armen, Ph.D.         |     | Chairman of the Board of Directors                                            |     | December 10, 2025 |
| *                            
 Peter Behner                 |     | Director                                                                      |