[SCHEDULE 13G] Black Hawk Acquisition Corporation Units SEC Filing

Rhea-AI Filing Summary

W.R. Berkley Corporation and its subsidiary Berkley Insurance Company report beneficial ownership of 462,496 ordinary shares of Black Hawk Acquisition Corporation, representing 5.2% of the class based on 8,929,500 outstanding ordinary shares. Both reporting persons disclose shared voting power and shared dispositive power over all 462,496 shares and state they have no sole voting or dispositive power. The filing includes a certification that the securities are held in the ordinary course of business and were not acquired to change or influence control. The reporting persons list their principal address as 475 Steamboat Road, Greenwich, CT.

Insights

Financial Analyst

TL;DR: A passive, material 5.2% stake by W.R. Berkley is disclosed; size is notable but filing asserts non-control intent.

The filing shows W.R. Berkley Corporation and Berkley Insurance Company together beneficially hold 462,496 shares, equal to 5.2% of the issued ordinary shares (8,929,500 outstanding). All disclosed power is shared rather than sole, and the Item 10 certification states the position is held in the ordinary course and not to influence control. For investors, the key facts are the stake size and its certified passive status; no operational or financial changes to the issuer are described.

Corporate Governance Expert

TL;DR: Ownership crosses the 5% disclosure threshold but is presented as passive with shared voting/dispositive authority.

The reporting persons report shared voting and dispositive authority over the entire 462,496-share position and explicitly deny any purpose to change or influence control. The governance implication is that a significant financial stakeholder is present without claiming control rights. The filing does not indicate any agreements, board nominations, or coordination with other holders, and no changes to governance structure are disclosed.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Black Hawk Acquisition Corporation

(Name of Issuer)

Ordinary Shares, par value $0.0001 per share

(Title of Class of Securities)

G1148A101

(CUSIP Number)

06/30/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. G1148A101

1

Names of Reporting Persons

W. R. Berkley Corporation

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 462,496.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 462,496.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

462,496.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.2 %

12

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13G

CUSIP No. G1148A101

1

Names of Reporting Persons

Berkley Insurance Company

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 462,496.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 462,496.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

462,496.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.2 %

12

Type of Reporting Person (See Instructions)

IC, CO

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Black Hawk Acquisition Corporation
(b)	Address of issuer's principal executive offices: 4125 Blackhawk Plaza Circle, Suite 166, Danville, CA 94506
Item 2.
(a)	Name of person filing: 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.
(b)	Address or principal business office or, if none, residence: The address of each Reporting Person is: 475 Steamboat Road Greenwich, CT 06830
(c)	Citizenship: 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.
(d)	Title of class of securities: Ordinary Shares, par value $0.0001 per share
(e)	CUSIP No.: G1148A101
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 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.
(b)	Percent of class: 5.2 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 462,496.00
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 462,496.00
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Exhibit 99.1.
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

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.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

W. R. Berkley Corporation

Signature:	By: /s/ Richard M. Baio
Name/Title:	Richard M. Baio, Executive Vice President and Chief Financial Officer
Date:	08/08/2025

Berkley Insurance Company

Signature:	By: /s/ Richard M. Baio
Name/Title:	Richard M. Baio, Executive Vice President and Treasurer
Date:	08/08/2025