X0206 3/A 2021-10-12 2021-10-13 0 0001720580 Adicet Bio, Inc. ACET 0001886986 Aftab Blake C/O ADICET BIO, INC. 200 CLARENDON STREET BOSTON MA 02116 0 1 0 0 Chief Scientific Officer Stock Option (Right to Buy) 15.93 2031-04-29 Common Stock 50000 D 25% of the shares shall vest on the first anniversary of April 5, 2021 (the "Vesting Commencement Date") and as to the remaining 75% of such shares in thirty-six (36) equal monthly installments following the first anniversary of the Vesting Commencement Date; provided that the option holder remains continuously engaged by the Company on each such date. This Form 3/A is being filed to include Exhibit 24, a Power of Attorney for the Reporting Person, which was inadvertently omitted from the original Form 3 filing on October 13, 2021. Exhibit: Power of Attorney /s/ Nick Harvey, as Attorney-in-Fact 2021-10-14