As filed with the U.S. Securities and Exchange Commission on September 25, 2025. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Ridgetech, Inc. (Exact name of registrant as specified in its charter) Cayman Islands 5122 Not Applicable (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Identification No.) 5th Floor ...