X0306 4 2020-03-16 1 0001672619 IMARA Inc. IMRA 0001700449 Arix Bioscience plc 20 BERKELEY SQUARE MAYFAIR, LONDON X0 W1J 6EQ UNITED KINGDOM 0 0 1 0 0001756884 Arix Bioscience Holdings Ltd 20 BERKELEY SQUARE MAYFAIR, LONDON X0 W1J 6EQ UNITED KINGDOM 0 0 1 0 Common Stock 2020-03-16 4 C 0 1367058 A 1367058 I By entities affiliated with Arix Bioscience plc Common Stock 2020-03-16 4 P 0 187500 16.00 A 1554558 I By entities affiliated with Arix Bioscience plc Series B Preferred Stock 2020-03-16 4 C 0 8611110 0.00 D Common Stock 1367058 0 I By entities affiliated with Arix Bioscience plc On March 16, 2020, the Issuer's Series B Preferred Stock converted into Common Stock on a 6.299-for-1 basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series B Preferred Stock was convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date. 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/ Michael P. Gray, Attorney-in-Fact 2020-03-16 Arix Bioscience Holdings Ltd., By: /s/ Michael P. Gray, Attorney-in-Fact 2020-03-16