X0306 4 2018-10-16 0 0001746466 Equillium, Inc. EQ 0001754954 Biocon SA C//O BDO SA, RUE DE L'AVENIR 2 DELEMONT V8 2800 SWITZERLAND 0 0 1 0 Common Stock 2018-10-16 4 A 0 228060 0.00 A 2316134 D This shares were acquired pursuant to certain anti-dilution rights for no additional consideration. /s/ Jason A. Keyes, Attorney-in-Fact 2018-10-16