Table of Contents As filed with the Securities and Exchange Commission on September 30, 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 American Dynamism Acquisition Company (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) Cayman Islands 6770 98-1873976 (Primary Standard Industrial Classification Code Number) (I.R.S. Employer ...

As filed with the U.S. Securities and Exchange Commission on January 7, 2025. Registration No. 333-281144 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ______________________ AMENDMENT NO. 4 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ______________________ Plum Acquisition Corp. IV (Exact Name of Registrant as Specified in its Charter) ______________________ | Cayman Islands | 6770 | 98-1795710 | | --- | --- | --- | | (State or Other Jurisdiction of | (Prim ...