As filed with U.S. Securities and Exchange Commission on December 23, 2025 Registration No. 333-[ ] UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ––––––––––––––––––––––––––––––––––––––– FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ––––––––––––––––––––––––––––––––––––––– Spartacus Acquisition Corp. II (Exact name of registrant as specified in its charter) ––––––––––––––––––––––––––––––––––––––– Cayman Islands 6770 (State or other jurisdiction of incorporation or ...