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BKHA

Black Hawk Acquisition Corp SEC filings

Biological Products, (No Diagnostic Substances) · Nasdaq, Nasdaq, Nasdaq

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Filing history

2026-11-05

Passive 5%+ stake update SCHEDULE 13G/A

2026-10-23

Current report 8-K

Other event

2026-10-13

Current report 8-K

Shareholder vote

2026-10-07

Passive 5%+ stake update SCHEDULE 13G/A

2026-10-06

Quarterly report 10-Q

2026-09-25

425 425

2026-09-24

Current report 8-K

Material agreementShare sale (dilution)

2026-09-22

Current report 8-K

Other event

2026-09-22

Prospectus 424B4

2026-09-17

EFFECT EFFECT

2026-09-04

S-4/A S-4/A

2026-08-26

Current report 8-K

Material agreementNew debtShare sale (dilution)

2026-08-25

Current report 8-K

Other event

2026-08-03

S-4/A S-4/A

2026-07-22

Current report 8-K

Other event

2026-07-15

Quarterly report 10-Q

2026-07-06

S-4/A S-4/A

2026-06-11

S-4/A S-4/A

2026-05-08

Current report 8-K

Material agreementNew debtShare sale (dilution)

2026-05-01

S-4/A S-4/A

2026-04-28

Annual report (amended) 10-K/A

2026-04-21

Quarterly report 10-Q

2026-04-14

Late quarterly report NT 10-Q

2026-04-01

Current report 8-K

Listing notice (delisting or exchange move)

2026-03-17

Current report 8-K

Exec/director changeReg FD disclosure

2026-03-06

Annual report 10-K

2026-03-05

S-4/A S-4/A

2026-03-02

Late annual report NT 10-K

2026-02-19

Current report 8-K

Material agreementNew debtShare sale (dilution)

2026-02-03

Current report 8-K

Exec/director change

2026-01-26

S-4/A S-4/A

2026-01-23

S-4/A S-4/A

2025-12-29

DEL AM DEL AM

2025-12-23

S-4 S-4

2025-11-14

Passive 5%+ stake update SCHEDULE 13G/A

2025-11-13

Passive 5%+ stake update SCHEDULE 13G/A

2025-11-12

Passive 5%+ stake update SCHEDULE 13G/A

2025-11-10

Passive 5%+ stake update SCHEDULE 13G/A

2025-10-21

Quarterly report 10-Q

2025-10-15

Late quarterly report NT 10-Q