AMENDMENT NO.1 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 FG Imperii Acquisition Corp. As filed with the U.S. Securities and Exchange Commission on December 30, 2025 Registration No. 333- 290873 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Copies to: Mitchell S. Nussbaum Giovanni Caruso Terry Bokosha Loeb & Loeb LLP 345 Park Avenue New York, New York 10154 Tel: (212) 407-4000 Brad L. Shiffman Blank Rome LLP 1271 Avenue of the Americas New York, New York 10 ...