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 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) (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Identification Number) 4125 Blackhawk Plaza Circle, Suite 166 Danville, CA 94506 Telephone: ...