As filed with the U.S. Securities and Exchange Commission on March 20, 2026. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ___________________________ FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ___________________________ Oceanhawk Acquisition Corp. (Exact Name of Registrant as Specified in its Charter) ___________________________ | Cayman Islands | 6770 | 98-1886973 | | --- | --- | --- | | (State or Other Jurisdiction of | (Primary Stand ...