SCHEDULE 13G/A 0001604488-24-000271 0001604488 XXXXXXXX LIVE 2 Ordinary Shares, par value $0.0001 per share (the "Ordinary Shares") 09/30/2025 0002000775 Black Hawk Acquisition Corp G1148A101 4125 BLACKHAWK PLAZA CIRCLE, SUITE 166 DANVILLE CA 94506 Rule 13d-1(b) First Trust Merger Arbitrage Fund b DE 0.00 0.00 0.00 0.00 0.00 N 0.00 IV First Trust Capital Management L.P. b DE 0.00 0.00 0.00 0.00 0.00 N 0.00 IA First Trust Capital Solutions L.P. b DE 0.00 0.00 0.00 0.00 0.00 N 0.00 HC FTCS Sub GP LLC b DE 0.00 0.00 0.00 0.00 0.00 N 0.00 HC Black Hawk Acquisition Corp 4125 BLACKHAWK PLAZA CIRCLE, SUITE 166 DANVILLE, CA 94506 This Schedule 13G/A is being filed jointly by First Trust Merger Arbitrage Fund ("VARBX"), First Trust Capital Management L.P. ("FTCM"), First Trust Capital Solutions L.P. ("FTCS") and FTCS Sub GP LLC ("Sub GP"). (1) VARBX, a series of Investment Managers Series Trust II, an investment company registered under the Investment Company Act of 1940. (2) FTCM, an investment adviser registered with the SEC that provides investment advisory services to, among others, (i) series of Investment Managers Series Trust II, an investment company registered under the Investment Company Act of 1940, specifically First Trust Multi-Strategy Fund and VARBX, (ii) First Trust Alternative Opportunities Fund, an investment company registered under the Investment Company Act of 1940 and (iii) Highland Capital Management Institutional Fund II, LLC, a Delaware limited liability company (collectively, the "Client Accounts"). (3) FTCS, a Delaware limited partnership and control person of FTCM. (4) Sub GP, a Delaware limited liability company and control person of FTCM. Each of the persons identified herein is referred to as a "Reporting Person" and, collectively, as the "Reporting Persons." Each of the Reporting Persons is a party to that certain Joint Filing Statement attached hereto. The principal business address of FTCM, FTCS and Sub GP is 225 W. Wacker Drive, 21st Floor, Chicago, IL 60606. The principal business address of VARBX is 235 West Galena Street, Milwaukee, WI 53212. United States N IV IA HC As investment adviser to the Client Accounts, FTCM has the authority to invest the funds of the Client Accounts in securities (including Ordinary Shares of Black Hawk Acquisition Corp (the "Issuer")) as well as the authority to purchase, vote and dispose of securities, and may thus be deemed the beneficial owner of any shares of the Issuer's Ordinary Shares held in the Client Accounts. As of September 30, 2025 VARBX, FTCM, FTCS and Sub GP collectively owned 0 shares of the outstanding Ordinary Shares of the Issuer. FTCS and Sub GP may be deemed to control FTCM and therefore may be deemed to be beneficial owners of the Ordinary Shares reported in this Schedule 13G/A. No one individual controls FTCS or Sub GP. FTCS and Sub GP do not own any Ordinary Shares of the Issuer for their own accounts. VARBX: 0.00% FTCM, FTCS and Sub GP: 0.00% VARBX: 0 FTCM, FTCS and Sub GP: 0 VARBX: 0 FTCM, FTCS and Sub GP: 0 VARBX: 0 FTCM, FTCS and Sub GP: 0 VARBX: 0 FTCM, FTCS and Sub GP: 0 N Y N See Item 4. N See Item 2. 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. Exhibit I: Joint Filing Statement First Trust Merger Arbitrage Fund /s/ Joy Ausili 11/14/2025 First Trust Capital Management L.P. /s/ Chad Eisenberg 11/14/2025 First Trust Capital Solutions L.P. /s/ Chad Eisenberg 11/14/2025 FTCS Sub GP LLC /s/ Chad Eisenberg 11/14/2025