X0206 3 2020-07-23 0 0001693011 Inozyme Pharma, Inc. INZY 0001389517 Huertas Pedro C/O INOZYME PHARMA, INC. 321 SUMMER STREET, SUITE 400 BOSTON MA 02210 0 1 0 0 See Remarks Stock Option (right to buy) 2.02 2029-09-25 Common Stock 160578 D This option was granted on September 26, 2019. The shares underlying the option vested with respect to 25% of the shares on September 26, 2020 and the remainder are scheduled to vest in equal monthly installments through September 26, 2023. Senior Vice President, Chief Medical Officer Exhibit Index: 24.1 Power of Attorney /s/ Stephen Basso, as attorney-in-fact for Pedro Huertas 2020-07-23