X0508 4 2023-08-24 0 0001840229 MiNK Therapeutics, Inc. INKT 0001098972 AGENUS INC 3 FORBES ROAD LEXINGTON MA 02421 0 0 1 0 0 Common Stock 2023-08-24 4 P 0 170244 1.5443 A 21692401 D Common Stock 2023-08-28 4 P 0 12808 1.4499 A 21705209 D Open market purchases reported on this line occurred at a weighted average price of $1.5443 (range of $1.52 to $1.55). Agenus Inc. undertakes to provide (upon request by the SEC staff, the issuer or a security holder of the issuer) full information regarding the number of shares purchased at each separate price. Open market purchases reported on this line occurred at a weighted average price of $1.4499 (range of $1.44 to $1.45). /s/ Christine Klaskin, Vice President, Finance 2023-08-28