SCHEDULE 13G 0000011544 XXXXXXXX LIVE Ordinary Shares, par value $0.0001 per share 06/30/2025 0002000775 Black Hawk Acquisition Corporation G1148A101 4125 Blackhawk Plaza Circle Suite 166 Danville CA 94506 Rule 13d-1(b) W. R. Berkley Corporation DE 0 462496 0 462496 462496 N 5.2 CO Berkley Insurance Company DE 0 462496 0 462496 462496 N 5.2 IC CO Black Hawk Acquisition Corporation 4125 Blackhawk Plaza Circle, Suite 166, Danville, CA 94506 The information required by Item 2(a) is set forth in Row 1 of the cover page hereto for each Reporting Person and is incorporated herein by reference for each such Reporting Person. The address of each Reporting Person is: 475 Steamboat Road Greenwich, CT 06830 The information required by Item 2(c) is set forth in Row 4 of the cover page hereto for each Reporting Person and is incorporated herein by reference for each such Reporting Person. N IC The information required by Items 4(a)-(c) is set forth in Rows 5-11 of the cover page hereto for each Reporting Person and is incorporated herein by reference for each such Reporting Person. Calculation of the ownership percentage set forth in Row 11 is based on the Issuer's publicly available Form 10-Q filed June 26, 2025, which states that the Issuer had issued and outstanding 8,929,500 Ordinary Shares as of June 26, 2025. 5.2 0 462,496.00 0 462,496.00 Y Y N See Exhibit 99.1. Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. W. R. Berkley Corporation By: /s/ Richard M. Baio 08/08/2025 Berkley Insurance Company By: /s/ Richard M. Baio 08/08/2025