As filed with the Securities and Exchange Commission on January 29, 2026. Registration No. 333-292147 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Table of Contents FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Cambridge Acquisition Corp. (Exact name of registrant as specified in its charter) Cayman Islands 6770 N/A (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Identificat ...

Table of Contents As filed with the Securities and Exchange Commission on December 15, 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 Cambridge Acquisition Corp. (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) Cayman Islands 6770 98-1881241 (I.R.S. Employer Identific ...