Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT S-1 1 hspo_s1.htm FORM S-1 As filed with the Securities and Exchange Commission on October 21, 2024 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION UNDER THE SECURITIES ACT OF 1933 HORIZON SPACE ACQUISITION II CORP. (Exact name of registrant as specified in its constitutional documents) Not Applicable (Translation of Registrant's name into English) Cayman Islands 6770 Not Applicable (State or other jurisdiction of incorporation or ...