Company: INKT
Filing Date: 2025-07-15
Form Type: 424B5
Source: 0001193125-25-159014
Chunk: 27

Company: MiNK Therapeutics, Inc.
Filing Date: 2025-07-15
Form: 424B5
Chunk 27
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 the common stock. Passive market
makers must comply with applicable volume and price limitations and must be identified as passive market makers. In general, a passive market maker must display its bid at a price not in excess of the highest independent bid for such security; if
all independent bids are lowered below the passive market maker’s bid, however, the passive market maker’s bid must then be lowered when certain purchase limits are exceeded. Passive market making may stabilize the market price of the
securities at a level above that which might otherwise prevail in the open market and, if commenced, may be discontinued at any time.

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GENERAL DESCRIPTION OF SECURITIES We may offer and sell, at any time and from time to time, subject to applicable law:

| • |     | common stock; |

| • |     | preferred stock; |

| • |     | warrants to purchase our common stock, preferred stock or debt securities; |

| • |     | debt securities consisting of debentures, notes or other evidences of indebtedness; |

| • |     | units consisting of a combination of the foregoing securities; or |

| • |     | any combination of these securities. |

We may issue debt securities that are exchangeable for or convertible into common stock or any of the other securities that may be sold under this prospectus. When particular securities are offered, a supplement to this prospectus will be filed with the Commission, which will describe the terms of the offering and sale of the offered securities. If the information contained in the prospectus supplement differs from the following description, you should rely on the information in the prospectus supplement. Whenever references are made in this prospectus to information that will be included in a prospectus supplement, to the extent permitted by applicable law, rules or regulations, we may instead include such information or add, update or change the information contained in this prospectus by means of a post-effective amendment to the registration statement of which this prospectus is a part, through filings we make with the Commission that are incorporated by reference in this prospectus or by any other method as may be permitted under applicable law, rules or regulations. 11

DESCRIPTION OF OUR COMMON STOCK

The following description of our common stock and certain provisions of our amended and restated certificate of incorporation, or the Amended and Restated
Certificate of Incorporation, and amended and restated bylaws, or the Amended and Restated Bylaws are summaries and are qualified by reference to the Amended and Restated Certificate of Incorporation