As filed with the U.S. Securities and Exchange Commission on December 2, 2025. Registration No. 333-290609 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT No. 1 To FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 VERNAL CAPITAL 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 ...

TABLE OF CONTENTS As filed with the U.S. Securities and Exchange Commission on April 16, 2024 Registration No. 333-276283 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 4 TO FORM F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 JIADE LIMITED (Exact name of registrant as specified in its charter) 8200 Cayman Islands (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) Not Applicable (I.R.S. Em ...