STAK Inc.(STAK) - Prospectus(update)

As filed with the U.S. Securities and Exchange Commission on December 30, 2025. Registration No. 333-291542 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 STAK Inc. 斯塔克工业集团有限公司 (Exact Name of Registrant as Specified in its Charter) Not Applicable (Translation of Registrant's Name into English) Cayman Islands 3533 Not Applicable (State or other jurisdiction of incorporation or organization) (Primary St ...