Table of Contents As filed with the Securities and Exchange Commission on April 29, 2024 Registration No. 333-278383 Washington, D.C. 20549 AMENDMENT NO. 1 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 TIVIC HEALTH SYSTEMS, INC. (Exact name of registrant as specified in its charter) 25821 Industrial Blvd., Suite 100 Hayward, CA 94545 (888) 276-6888 (Address, including zip code, and telephone number, including area code, of registrant's principal executive offices) UNITED STATES SECURIT ...