As filed with the Securities and Exchange Commission on September 17, 2025 Registration No. 333-290283 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 1 to 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) Delaware 2836 23-2753988 (Primary Standard Industrial Classification Code Number) 320 Soquel Way Sunnyvale, California ...