X0306 4 2018-10-23 0 0001664106 LogicBio Therapeutics, Inc. LOGC 0001700449 Arix Bioscience plc 20 BERKELEY SQUARE MAYFAIR, LONDON X0 W1J 6EQ UNITED KINGDOM 0 0 1 0 0001756884 Arix Bioscience Holdings Ltd 20 BERKLEY SQUARE MAYFAIR, LONDON X0 W1J6EQ UNITED KINGDOM 0 0 1 0 Common stock 2018-10-23 4 C 0 2279023 A 2279023 I See Footnote Common stock 2018-10-23 4 P 0 700000 10.00 A 2979023 I See Footnote Series B Preferred Stock 2018-10-23 4 C 0 4352775 0.00 D Common Stock 2279023 0 I See Footnote The Series B Preferred Stock converted into LogicBio Therapeutics, Inc. (the "Issuer") common stock effective upon closing of the Issuer's initial public offering. These shares are owned directly by Arix Bioscience Holdings Limited, which is a wholly owned subsidiary of Arix Bioscience Plc. Arix Bioscience Plc is an indirect beneficial owner of the reported securities and disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein. Arix Bioscience, Plc by: /s/ James Rawlingson, Chief Financial Officer 2018-10-25 Arix Bioscience Holdings Limited, by: /s/ James Rawlingson, Authorized Officer 2018-10-25