Black Hills Corp /SD/ SEC filings BKH
Black Hills Corp /SD/ has 1,001 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 Aug 6, 2026, covering the quarter ended Jun 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 |
|---|---|---|---|
| 11-K | Employee savings plan report | Jun 18, 2026 | Dec 31, 2025 |
| EFFECT | Filing | Feb 6, 2026 | — |
| 425 | Filing | Feb 6, 2026 | — |
| CORRESP | Letter to the SEC | Feb 5, 2026 | — |
| CORRESP | Letter to the SEC | Feb 4, 2026 | — |
| 425 | Filing | Jan 30, 2026 | — |
| 425 | Filing | Nov 10, 2025 | — |
| DRSLTR | Filing | Oct 30, 2025 | — |
| DRS | Filing | Oct 30, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 11-K | Employee savings plan report | Jun 23, 2025 | Dec 31, 2024 |
| 11-K | Employee savings plan report | Jun 20, 2024 | Dec 31, 2023 |
| POSASR | Filing | Jul 10, 2023 | — |
| 11-K | Employee savings plan report | Jun 22, 2023 | Dec 31, 2022 |
| 11-K | Employee savings plan report | Jun 23, 2022 | Dec 31, 2021 |
| 11-K | Employee savings plan report | Jun 22, 2021 | Dec 31, 2020 |
| 11-K | Employee savings plan report | Jun 22, 2020 | Dec 31, 2019 |
| 11-K | Employee savings plan report | Jun 21, 2019 | Dec 31, 2018 |
| 25-NSE | Delisting notice | Nov 1, 2018 | — |
| 11-K | Employee savings plan report | Jun 26, 2018 | Dec 31, 2017 |
| 11-K | Employee savings plan report | Jun 26, 2018 | Dec 31, 2017 |
| 11-K | Employee savings plan report | Jun 29, 2017 | Dec 31, 2016 |
| 11-K | Employee savings plan report | Jun 29, 2017 | Dec 31, 2016 |
| UPLOAD | Letter from the SEC | Oct 14, 2016 | — |
| CORRESP | Letter to the SEC | Oct 7, 2016 | — |
| UPLOAD | Letter from the SEC | Sep 23, 2016 | — |
Showing 40 filings. 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.