As filed with the Securities and Exchange Commission on September 16, 2025 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S‑1 REGISTRATION STATEMENT Under THE SECURITIES ACT OF 1933 BioCardia, Inc. (Exact name of Registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) 320 Soquel Way Sunnyvale, California 94085 (650) 226-0120 Delaware 2836 23-2753988 (I.R ...