As filed with the Securities and Exchange Commission on March 13, 2025. Registration No. 333-285152 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM S-1 Amendment No. 3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 QUARTZSEA ACQUISITION CORPORATION (I.R.S. Employer Identification Number) 1185 Avenue of the Americas, Suite 304 New York, NY 10036 Telephone: (212) 612-1400 (Address, Including Zip Code, and Telephone Number, Including Area Code, of Registrant's Principal Ex ...