As filed with the U.S. Securities and Exchange Commission on December 5, 2024. Registration No. 333-281806 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 3 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Ribbon Acquisition Corp (Exact name of registrant as specified in its constitutional documents) Cayman Islands 6770 N/A (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) (I.R.S. E ...