Black Hawk Acquisition Corporation 存入 15 万美元，将业务合并期限延长一个月

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report: October 22, 2026

Black Hawk Acquisition Corporation

(Exact Name of Registrant as Specified in its Charter)

(952) 217-4482

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Securities registered pursuant to Section 12(b) of the Act:

ITEM 8.01. Other Events.

On October 22, 2026, an aggregate of $150,000 (the “Extension Payment”) was deposited into the trust account of Black Hawk Acquisition Corporation (the “Company”) for its public shareholders, which enables the Company to further extend the period of time it has to consummate its initial business combination by one month (the “Extension”) from October 22, 2026 to November 22, 2026.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.