0001746466 2025-09-08 2025-09-08 0001746466 1 2025-09-08 2025-09-08 iso4217:USD pure shares S-3 S-3 EX-FILING FEES 0001746466 Equillium, Inc. N/A N/A S-3 Equillium, Inc. false Equity Common stock, par value $0.0001 per share true 52631579 1.745 91842105.36 0.0001531 14061.03 91842105.36 14061.03 0.00 0.00 14061.03 The amount of shares registered represents an aggregate of 52,631,579 shares of Equillium, Inc. common stock, par value $0.0001 per share ("common stock"), which includes 30,816,705 shares of common stock that may be issued upon the exercise of pre-funded warrants, held by the selling stockholders named in the prospectus that forms a part of this registration statement (this "Registration Statement"). Pursuant to Rule 416 under the Securities Act of 1933, as amended (the "Securities Act"), this Registration Statement also covers any additional number of shares of common stock as may be issuable as a result of stock splits, stock dividends, or other distribution, recapitalization or similar events with respect to the shares of common stock being registered pursuant to this Registration Statement. The proposed maximum offering price per share has been estimated in accordance with Rule 457(c) under the Securities Act solely for purposes of calculating the registration fee. The proposed maximum offering price per unit and the maximum aggregate offering price are based on the average of the high and low sale price of common stock, as reported on the Nasdaq Capital Market on September 3, 2025, which date is within five business days prior to filing this Registration Statement.