As filed with the U.S. Securities and Exchange Commission on October 14, 2025. Registration No. 333-290030 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 1 to FORM F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Nihon Shintatsu Co., Ltd. (Exact name of registrant as specified in its charter) n/a (Translation of Registrant's name into English) (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Numb ...