As filed with the U.S. Securities and Exchange Commission under the Securities Act of 1933, as amended, on May 23, 2025. Registration No. 333-286237 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 __________________________________________ Form S-1/A (Amendment No. 1) REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 __________________________________________ BEST SPAC I Acquisition Corp. (Exact name of registrant as specified in its charter) ___________________________________ ...