FORM S-1 AMENDMENT NO.2 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 BLACK HAWK ACQUISITION CORPORATION (Exact name of registrant as specified in its charter) As filed with the U.S. Securities and Exchange Commission on March 8, 2024. Registration No. 333-276857 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Cayman Islands 6770 N/A (State or Other Jurisdiction of Incorporation or Organization) (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Ident ...