1RT Acquisition Corp Unit(ONCHU) - Prospectus

As filed with the Securities and Exchange Commission on June 11, 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 ____________________________ 1RT Acquisition Corp. (Exact name of registrant as specified in its charter) ____________________________ | Cayman Islands | 6770 | 33-1579459 | | --- | --- | --- | | (State or other jurisdiction of | (Primary Standard Industrial | (I.R.S. Employer | | ...