X0306 4 2022-06-02 0 0001720580 Adicet Bio, Inc. ACET 0001364719 Kauffman Michael C/O ADICET BIO, INC. 200 CLARENDON STREET, FLOOR 6 BOSTON MA 02116 1 0 0 0 Stock Option (Right to Buy) 11.49 2022-06-02 4 A 0 18500 0.00 A 2032-06-01 Common stock 18500 18500 D These shares shall vest in full on the earlier to occur of (a) the first anniversary of the grant date or (b) the date of the next annual meeting of stockholders following the grant date, subject to the Reporting Person's continued service on the Issuer's board of directors. /s/ Nick Harvey, Attorney-in-Fact 2022-06-03