Company: INKT
Filing Date: 2025-12-10
Form Type: S-3/A
Source: 0001193125-25-314252
Chunk: 44

Company: MiNK Therapeutics, Inc.
Filing Date: 2025-12-10
Form: S-3/A
Chunk 44
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| Dilution per share to new investors participating in this offering |     |     |       |   |     | $ | (8.87 | ) |

The above discussion and table exclude:

| • |     | 772,038 shares of common stock issuable upon exercise of the options granted to employees and non-employees, as well as options granted to members of the board of directors, at a weighted-average exercise price of $5.84 per share, as of September 30, 2025; |

| • |     | 75,308 shares of common stock issuable upon vesting of non-vested stock    
 granted to employees, consultants and directors, as of September 30, 2025; |

| • |     | 359,417 shares of common stock reserved for issuance under our 2021 Equity Incentive Plan, as of 
 September 30, 2025;                                                                              |

| • |     | 173,380 shares of common stock reserved for issuance under our 2021 Employee Stock Purchase Plan, as of 
 September 30, 2025; and                                                                                 |

To the extent any of these outstanding options or warrants are exercised at a price less than the public offering price, there may be further dilution to purchasers of our common stock in this offering. The information above reflects and assumes no exercise of outstanding options and warrants to purchase common stock, and no issuance of shares available for future issuance under our equity compensation plans. S-8

PLAN OF DISTRIBUTION

Pursuant to the ATM Sales Agreement we may issue and sell an aggregate of up to $50,000,000 of our common stock from time to time through the
Sales Agent. The ATM Sales Agreement has been filed with the SEC and is incorporated by reference into this prospectus. This is a brief summary of the material terms of the ATM Sales Agreement and does not purport to be a complete statement of its
terms and conditions.

Each time that we wish to sell common stock under the ATM Sales Agreement, we will provide the Sales Agent with a
placement notice describing the number or dollar value of shares to be issued, the time period during which sales are requested to be made, any limitation on the number of shares that may be sold in any one day and any minimum price below which
sales may not be made.

Upon receipt of a placement notice from us, and subject to the terms and conditions of the ATM Sales Agreement,
the Sales Agent has agreed to use its commercially reasonable efforts consistent