X0306 4 2022-01-07 0 0001720580 Adicet Bio, Inc. ACET 0001886986 Aftab Blake C/O ADICET BIO, INC. 200 CLARENDON STREET, FLOOR 6 BOSTON MA 02116 0 1 0 0 Chief Scientific Officer Stock Option (Right to Buy) 15.52 2022-01-07 4 A 0 125000 0.00 A 2032-01-06 Common Stock 125000 125000 D 25% of the shares shall vest on the first anniversary of January 7, 2022 and, thereafter, the remainder of the shares shall vest in 36 equal monthly installments, provided that the Reporting Person maintains a service relationship with the Company as of the applicable vesting dates. /s/ Nick Harvey, Attorney-in-Fact 2022-01-11