As filed with the U.S. Securities and Exchange Commission on December 10, 2024 Registration No. 333-275155 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 4 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 FG Merger II Corp. (Exact name of registrant as specified in its charter) (State or other jurisdiction of (Primary Standard Industrial (I.R.S. Employer incorporation or organization) Classification Code Number) Identification Number) Nevada 6770 86- ...