X0306 4 2020-03-16 1 0001672619 IMARA Inc. IMRA 0001288452 BAY CITY CAPITAL LLC 750 BATTERY STREET STE 400 SAN FRANCISCO CA 94111 0 0 1 0 0001461543 Bay City Capital Management V LLC 750 BATTERY STREET SUITE 400 SAN FRANCISCO CA 94111 0 0 1 0 0001401826 Bay City Capital Fund V, L.P. 750 BATTERY STREET SUITE 400 SAN FRANCISCO CA 94111 0 0 1 0 0001409813 Bay City Capital Fund V Co-Investment Fund, L.P. 750 BATTERY STREET SUITE 400 SAN FRANCISCO CA 94111 0 0 1 0 Common Stock 2020-03-16 4 C 0 690232 A 690232 I By entities affiliated with Bay City Capital LLC Common Stock 2020-03-16 4 C 0 13148 A 703380 I By entities affiliated with Bay City Capital LLC Series Seed Preferred Stock 2020-03-16 4 C 0 281878 D Common Stock 44749 0 I By entities affiliated with Bay City Capital LLC Series Seed Preferred Stock 2020-03-16 4 C 0 5372 D Common Stock 852 0 I (By entities affiliated with Bay City Capital LLC Series A Preferred Stock 2020-03-16 4 C 0 3220915 D Common Stock 511335 0 I By entities affiliated with Bay City Capital LLC Series A Preferred Stock 2020-03-16 4 C 0 61378 D Common Stock 9741 0 I By entities affiliated with Bay City Capital LLC Series B Preferred Stock 2020-03-16 4 C 0 845008 D Common Stock 134148 0 I By entities affiliated with Bay City Capital LLC Series B Preferred Stock 2020-03-16 4 C 0 16103 D Common Stock 2555 0 I By entities affiliated with Bay City Capital LLC Stock Option (right to buy) 16.00 2020-03-16 4 A 0 15457 0.00 A 2030-03-15 Common Stock 15457 15457 D Bay City Capital LLC, a Delaware limited liability company ("BCC"), Bay City Capital Management V LLC, a Delaware limited liability company ("Management V"), Bay City Capital Fund V, L.P., a Delaware limited partnership ("Fund V"), and Bay City Capital Fund V Co-Investment Fund, L.P., a Delaware limited partnership ("Co-Investment V") are deemed to be a "group" for the purposes of Section 13(d) under the Securities Exchange Act of 1934. Management V is the general partner of Fund V and Co-Investment V and has sole voting and dispositive power with respect to the securities held by Fund V and Co-Investment V. BCC, the manager of Management V, is also an advisor to Fund V and Co-Investment V and has sole voting and dispositive power with respect to the securities held by Fund V and Co-Investment V. Carl Goldfischer, a Managing Director of BCC, is a member of the Issuer's Board of Directors. Represent securities held by Fund V, including indirect interests of BCC and Management V. BCC and Management V each disclaims beneficial ownership with respect to these securities, except to the extent of their pecuniary interest therein. Represent securities held by Co-Investment V, including indirect interests of BCC and Management V. BCC and Management V each disclaims beneficial ownership with respect to these securities, except to the extent of their pecuniary interest therein. On March 16, 2020, the Series Seed 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 Seed 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. On March 16, 2020, Series A 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 A 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. On March 16, 2020, the 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. The option vests in three equal installments on March 16, 2021, 2022 and 2023. The securities are held directly by Bay City Capital LLC ("BCC LLC") and represent stock options granted to Carl Goldfischer and transferred to BCC LLC pursuant to an agreement between Dr. Goldfischer and BCC LLC. Bay City Capital LLC, By: /s/ Michael P. Gray, Attorney-in-Fact 2020-03-16 Bay City Capital Management V LLC, By: /s/ Michael P. Gray, Attorney-in-Fact 2020-03-16 Bay City Capital Fund V, L.P., By: /s/ Michael P. Gray, Attorney-in-Fact 2020-03-16 Bay City Capital Fund V Co-Investment Fund, L.P., By: /s/ Michael P. Gray, Attorney-in-Fact 2020-03-16