BKHA SEC Filings: 8-K, 10-Q, S-3 & 424B

Financials

TYPE

HEADLINE

FILED AT

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Oct 6, 2026

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Jul 15, 2026

10-K/A

Form 10-K/A - Annual report [Section 13 and 15(d), not S-K Item 405]: [Amend]

Apr 28, 2026

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Apr 20, 2026

NT 10-Q

Form NT 10-Q - Notification of inability to timely file Form 10-Q or 10-QSB

Apr 14, 2026

10-K

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]

Mar 6, 2026

News

TYPE

HEADLINE

FILED AT

8-K

Black Hawk Acquisition Corporation Extends Business Combination Period to November 2026

Oct 23, 2026

8-K

Black Hawk Acquisition Corporation Shareholders Approve Business Combination with Vesicor Therapeutics

Oct 13, 2026

8-K

Black Hawk Acquisition Corporation Enters into Financing and Related Agreements with Meteora for Business Combination with Vesicor Therapeutics

Sep 24, 2026

8-K

Black Hawk Acquisition Corporation Extends Business Combination Deadline to October 22, 2026

Sep 22, 2026

8-K

Black Hawk Acquisition Corporation Issues $300,000 Convertible Promissory Note to Sponsor

Aug 26, 2026

8-K

Black Hawk Acquisition Corporation Extends Business Combination Deadline

Aug 24, 2026

Prospectus

TYPE

HEADLINE

FILED AT

425

Form 425 - Prospectuses and communications, business combinations

Sep 24, 2026

424B4

Form 424B4 - Prospectus [Rule 424(b)(4)]

Sep 21, 2026

425

Form 425 - Prospectuses and communications, business combinations

Apr 28, 2025

424B4

OFFERING (Firm Commitment) - EF Hutton LLC, B. Riley Securities, Inc., RF Lafferty & Co., Inc. | Shares amount: 6,900,000 | Share price: $10.00 | Offering amount: $69,000,000.00

Mar 22, 2024

Registrations

TYPE

HEADLINE

FILED AT

S-4/A

Black Hawk Acquisition Corporation Announces Special Meeting to Approve Business Combination with Vesicor Therapeutics, Inc. EFFECTIVE, DATED 2026-09-17

Sep 4, 2026

S-4/A

Black Hawk Acquisition Corporation Announces Special Meeting to Approve Business Combination with Vesicor Therapeutics, Inc. EFFECTIVE, DATED 2026-09-17

Jul 31, 2026

S-4/A

Form S-4/A - Registration of securities, business combinations: [Amend]

Jul 2, 2026

S-4/A

Form S-4/A - Registration of securities, business combinations: [Amend]

Jun 11, 2026

S-4/A

Form S-4/A - Registration of securities, business combinations: [Amend]

May 1, 2026

S-4/A

Form S-4/A - Registration of securities, business combinations: [Amend]

Mar 4, 2026

Proxies

TYPE

HEADLINE

FILED AT

DEFA14A

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material

Jul 8, 2025

DEFA14A

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material

Jun 20, 2025

DEFA14A

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material

Jun 18, 2025

DEFR14A

Form DEFR14A - Revised definitive proxy soliciting materials

Jun 10, 2025

DEF 14A

Form DEF 14A - Other definitive proxy statements

Jun 9, 2025

PRE 14A

Form PRE 14A - Other preliminary proxy statements

May 28, 2025

Ownerships

TYPE

HEADLINE

FILED AT

SCHEDULE 13G/A

NEWBERKLEY W R CORP (Filed by)

Nov 9, 2026

SCHEDULE 13G/A

WOLVERINE ASSET MANAGEMENT LLC (Filed by)

Nov 5, 2026

SCHEDULE 13G/A

WOLVERINE ASSET MANAGEMENT LLC (Filed by)

Oct 7, 2026

S-4/A

Form S-4/A - Registration of securities, business combinations: [Amend]

Sep 4, 2026

S-4/A

Form S-4/A - Registration of securities, business combinations: [Amend]

Jul 31, 2026

S-4/A

Form S-4/A - Registration of securities, business combinations: [Amend]

Jul 2, 2026

Other

TYPE

HEADLINE

FILED AT

Black Hawk Acquisition Corporation BKHA · SEC Filings