Black Hills Corp /SD/ SEC filings BKH
Black Hills Corp /SD/ has 1,002 filings in SEC EDGAR's recent list, going back to Aug 4, 2016. Its latest annual report, Form ARS, was filed on Mar 18, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 4, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 7, 2026 | — |
| 4 | Insider transaction | May 28, 2026 | May 27, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 12, 2026 | — |
| 4 | Insider transaction | May 4, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 4, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 4, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 4, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 4, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 4, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 4, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 4, 2026 | May 1, 2026 |
| 4 | Insider transaction | May 4, 2026 | May 1, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Feb 18, 2026 | Dec 1, 2025 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 12, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 12, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 12, 2026 |
| 4 | Insider transaction | Feb 10, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 10, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 10, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 10, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 10, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 10, 2026 | Feb 6, 2026 |
| 5 | Annual insider ownership | Feb 6, 2026 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 6, 2026 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 6, 2026 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 6, 2026 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 6, 2026 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 6, 2026 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 6, 2026 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 6, 2026 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 6, 2026 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 5, 2026 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 5, 2026 | Dec 31, 2024 |
| 4 | Insider transaction | Nov 12, 2025 | Nov 10, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 7, 2025 |
| 3 | Initial insider ownership | Oct 17, 2025 | Oct 13, 2025 |
| 4 | Insider transaction | Aug 21, 2025 | Aug 1, 2025 |
| 3 | Initial insider ownership | Aug 20, 2025 | Jul 21, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 30, 2025 | — |
| 3 | Initial insider ownership | Apr 28, 2025 | Apr 23, 2025 |
| 3 | Initial insider ownership | Apr 28, 2025 | Apr 23, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 5 | Annual insider ownership | Feb 18, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Feb 14, 2025 | Feb 12, 2025 |
| 4 | Insider transaction | Feb 14, 2025 | Feb 12, 2025 |
| 4 | Insider transaction | Feb 14, 2025 | Feb 12, 2025 |
| 4 | Insider transaction | Feb 14, 2025 | Feb 12, 2025 |
| 5 | Annual insider ownership | Feb 14, 2025 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 14, 2025 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 14, 2025 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 14, 2025 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 14, 2025 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 14, 2025 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 14, 2025 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 14, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Feb 13, 2025 | Feb 11, 2025 |
| 4 | Insider transaction | Feb 13, 2025 | Feb 11, 2025 |
| 4 | Insider transaction | Feb 13, 2025 | Feb 11, 2025 |
| 4 | Insider transaction | Feb 13, 2025 | Feb 11, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 7, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 7, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 7, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 7, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 7, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 7, 2025 |
| 5 | Annual insider ownership | Feb 10, 2025 | Dec 31, 2024 |
| 5 | Annual insider ownership | Feb 10, 2025 | Dec 31, 2024 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 5, 2025 | — |
| 3 | Initial insider ownership | Nov 19, 2024 | Nov 13, 2024 |
| 4 | Insider transaction | Nov 12, 2024 | Nov 8, 2024 |
| 3 | Initial insider ownership | Nov 7, 2024 | Nov 7, 2024 |
| 4 | Insider transaction | Jun 3, 2024 | May 30, 2024 |
| 144 | Notice of proposed sale | May 30, 2024 | — |
| 4 | Insider transaction | May 2, 2024 | Apr 30, 2024 |
| 4 | Insider transaction | May 2, 2024 | Apr 30, 2024 |
| 4 | Insider transaction | May 2, 2024 | Apr 30, 2024 |
| 4 | Insider transaction | May 2, 2024 | Apr 30, 2024 |
| 4 | Insider transaction | May 2, 2024 | Apr 30, 2024 |
| 4 | Insider transaction | May 2, 2024 | Apr 30, 2024 |
| 4 | Insider transaction | May 2, 2024 | Apr 30, 2024 |
| 4 | Insider transaction | May 2, 2024 | Apr 30, 2024 |
| 4 | Insider transaction | May 2, 2024 | Apr 30, 2024 |
| 4 | Insider transaction | Mar 6, 2024 | Mar 5, 2024 |
| 4 | Insider transaction | Feb 13, 2024 | Jan 10, 2024 |
| 4 | Insider transaction | Feb 13, 2024 | Feb 9, 2024 |
| 4 | Insider transaction | Feb 13, 2024 | Feb 9, 2024 |
| 4 | Insider transaction | Feb 13, 2024 | Feb 9, 2024 |
| 4 | Insider transaction | Feb 13, 2024 | Feb 9, 2024 |
| 4 | Insider transaction | Feb 13, 2024 | Feb 9, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| 5 | Annual insider ownership | Feb 13, 2024 | Dec 31, 2023 |
| 5 | Annual insider ownership | Feb 13, 2024 | Dec 31, 2023 |
| 5 | Annual insider ownership | Feb 13, 2024 | Dec 31, 2023 |
| 5 | Annual insider ownership | Feb 13, 2024 | Dec 31, 2023 |
| 5 | Annual insider ownership | Feb 13, 2024 | Dec 31, 2023 |
| 5 | Annual insider ownership | Feb 13, 2024 | Dec 31, 2023 |
| 5 | Annual insider ownership | Feb 13, 2024 | Dec 31, 2023 |
| 5 | Annual insider ownership | Feb 13, 2024 | Dec 31, 2023 |
| 5 | Annual insider ownership | Feb 13, 2024 | Dec 31, 2023 |
| 5 | Annual insider ownership | Feb 13, 2024 | Dec 31, 2023 |
| 5 | Annual insider ownership | Feb 13, 2024 | Dec 31, 2023 |
| 5 | Annual insider ownership | Feb 13, 2024 | Dec 31, 2023 |
| 5 | Annual insider ownership | Feb 13, 2024 | Dec 31, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 25, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 22, 2024 | — |
| 4 | Insider transaction | Dec 29, 2023 | Aug 5, 2023 |
| 3 | Initial insider ownership | Jun 26, 2023 | Jun 15, 2023 |
| 3 | Initial insider ownership | Jun 26, 2023 | Jun 15, 2023 |
| 4 | Insider transaction | May 9, 2023 | May 8, 2023 |
| 144 | Notice of proposed sale | May 8, 2023 | — |
| 4 | Insider transaction | May 3, 2023 | May 1, 2023 |
| 4 | Insider transaction | May 3, 2023 | May 1, 2023 |
| 4 | Insider transaction | May 3, 2023 | May 1, 2023 |
| 4 | Insider transaction | May 3, 2023 | May 1, 2023 |
| 4 | Insider transaction | May 3, 2023 | May 1, 2023 |
| 4 | Insider transaction | May 3, 2023 | May 1, 2023 |
| 4 | Insider transaction | May 3, 2023 | May 1, 2023 |
| 4 | Insider transaction | May 3, 2023 | May 1, 2023 |
| 4 | Insider transaction | May 3, 2023 | May 1, 2023 |
| 4 | Insider transaction | May 2, 2023 | Apr 30, 2023 |
| 4 | Insider transaction | May 2, 2023 | Apr 30, 2023 |
| 4 | Insider transaction | May 2, 2023 | Apr 30, 2023 |
| 4 | Insider transaction | May 2, 2023 | Apr 30, 2023 |
| 4 | Insider transaction | May 2, 2023 | Apr 30, 2023 |
| 3 | Initial insider ownership | Apr 6, 2023 | Apr 1, 2023 |
| 4 | Insider transaction | Feb 14, 2023 | Feb 10, 2023 |
| 4 | Insider transaction | Feb 14, 2023 | Feb 10, 2023 |
| 4 | Insider transaction | Feb 14, 2023 | Feb 10, 2023 |
| 4 | Insider transaction | Feb 14, 2023 | Feb 10, 2023 |
| 4 | Insider transaction | Feb 14, 2023 | Feb 11, 2023 |
| 4 | Insider transaction | Feb 13, 2023 | Feb 9, 2023 |
| 4 | Insider transaction | Feb 13, 2023 | Feb 9, 2023 |
| 4 | Insider transaction | Feb 13, 2023 | Feb 9, 2023 |
| 4 | Insider transaction | Feb 13, 2023 | Feb 9, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| 5 | Annual insider ownership | Feb 1, 2023 | Dec 31, 2022 |
| 5 | Annual insider ownership | Feb 1, 2023 | Dec 31, 2022 |
| 5 | Annual insider ownership | Feb 1, 2023 | Dec 31, 2022 |
| 5 | Annual insider ownership | Feb 1, 2023 | Dec 31, 2022 |
| 5 | Annual insider ownership | Feb 1, 2023 | Dec 31, 2022 |
| 5 | Annual insider ownership | Feb 1, 2023 | Dec 31, 2022 |
| 5 | Annual insider ownership | Feb 1, 2023 | Dec 31, 2022 |
| 5 | Annual insider ownership | Feb 1, 2023 | Dec 31, 2022 |
| 5 | Annual insider ownership | Feb 1, 2023 | Dec 31, 2022 |
| 5 | Annual insider ownership | Jan 31, 2023 | Dec 31, 2022 |
| 5 | Annual insider ownership | Jan 31, 2023 | Dec 31, 2022 |
| 5 | Annual insider ownership | Jan 31, 2023 | Dec 31, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 26, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 20, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 11, 2022 | — |
| 4 | Insider transaction | Jun 28, 2022 | Jun 27, 2022 |
| 4 | Insider transaction | Jun 3, 2022 | Mar 1, 2022 |
| 4 | Insider transaction | May 23, 2022 | May 20, 2022 |
| 4 | Insider transaction | May 10, 2022 | May 6, 2022 |
| 4 | Insider transaction | May 3, 2022 | Apr 30, 2022 |
| 4 | Insider transaction | May 3, 2022 | Apr 30, 2022 |
| 4 | Insider transaction | May 3, 2022 | Apr 30, 2022 |
| 4 | Insider transaction | May 3, 2022 | Apr 30, 2022 |
| 4 | Insider transaction | May 3, 2022 | Apr 30, 2022 |
| 4 | Insider transaction | May 3, 2022 | Apr 30, 2022 |
| 4 | Insider transaction | May 3, 2022 | Apr 30, 2022 |
| 4 | Insider transaction | May 3, 2022 | Apr 30, 2022 |
| 4 | Insider transaction | May 3, 2022 | Apr 30, 2022 |
| 4 | Insider transaction | May 3, 2022 | Apr 30, 2022 |
| 4 | Insider transaction | Feb 15, 2022 | Feb 11, 2022 |
| 4 | Insider transaction | Feb 15, 2022 | Feb 11, 2022 |
| 4 | Insider transaction | Feb 15, 2022 | Feb 11, 2022 |
| 4 | Insider transaction | Feb 15, 2022 | Feb 11, 2022 |
| 4 | Insider transaction | Feb 15, 2022 | Feb 11, 2022 |
| 4 | Insider transaction | Feb 15, 2022 | Feb 11, 2022 |
| 4 | Insider transaction | Feb 14, 2022 | Feb 10, 2022 |
| 4 | Insider transaction | Feb 14, 2022 | Feb 10, 2022 |
| 4 | Insider transaction | Feb 14, 2022 | Feb 10, 2022 |
| 4 | Insider transaction | Feb 14, 2022 | Feb 10, 2022 |
| 4 | Insider transaction | Feb 14, 2022 | Feb 10, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 28, 2022 | — |
| 5 | Annual insider ownership | Jan 12, 2022 | Dec 31, 2021 |
| 5 | Annual insider ownership | Jan 12, 2022 | Dec 31, 2021 |
| 5 | Annual insider ownership | Jan 12, 2022 | Dec 31, 2021 |
| 5 | Annual insider ownership | Jan 12, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Jan 5, 2022 | Jan 3, 2022 |
| 4 | Insider transaction | Jan 5, 2022 | Jan 3, 2022 |
| 4 | Insider transaction | Jan 5, 2022 | Jan 3, 2022 |
| 4 | Insider transaction | Jan 5, 2022 | Jan 3, 2022 |
| 4 | Insider transaction | Jan 5, 2022 | Jan 3, 2022 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Electric Services (SIC 4911)
- Listed as
- BKH (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- SD
- Headquarters
- Rapid City, SD
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1130464
- Former names
- BLACK HILLS HOLDING CORP (until Dec 26, 2000)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.