144 0001797818 XXXXXXXX LIVE 0001746466 Equillium, Inc. 001-38692 2223 AVENIDA DE LA PLAYA SUITE 105 LA JOLLA CA 92037 (858) 412-5302 Zedelmayer Christine Officer Common Stock Maxim Group

300 Park Ave 16th Floor New York NY 10022

8098 7428.00 60893283 11/25/2025 NASDAQ Common Stock 10/16/2018 Restricted Stock Issuer N 8098 11/25/2025 Compensation Y 11/25/2025 08/27/2025 /s/ Dominick Iadicicco, as a duly authorized representative of Maxim Group LLC., as attorney-in-fact for Christine Zedelmayer