BKH - Company ID 0001130464
BLACK HILLS CORP /SD/ has filed 3,087 public company documents between 2000 and 2026. The most frequent type is insider trade (2,124 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Type | Filing | Filed | Period covered | Open |
|---|---|---|---|---|
| UPLOAD | SEC correspondence | 15y ago2010-12-28 | - | View filing |
| 8-K | Major company event | 15y ago2010-12-16 | 2010-12-15 | View filing |
| 4 | Insider trade | 15y ago2010-12-14 | 2010-12-11 | View filing |
| 4 | Insider trade | 15y ago2010-12-14 | 2010-12-11 | View filing |
| 8-K | Major company event | 15y ago2010-12-10 | 2010-12-07 | View filing |
| 4 | Insider trade | 15y ago2010-12-08 | 2010-12-07 | View filing |
| 4 | Insider trade | 15y ago2010-12-03 | 2010-12-02 | View filing |
| 4 | Insider trade | 15y ago2010-12-02 | 2010-11-30 | View filing |
| 4 | Insider trade | 15y ago2010-12-02 | 2010-11-30 | View filing |
| 4 | Insider trade | 15y ago2010-12-02 | 2010-11-30 | View filing |
| 4 | Insider trade | 15y ago2010-12-02 | 2010-11-30 | View filing |
| 4 | Insider trade | 15y ago2010-12-02 | 2010-11-30 | View filing |
| 4 | Insider trade | 15y ago2010-12-02 | 2010-11-30 | View filing |
| 4 | Insider trade | 15y ago2010-12-02 | 2010-11-30 | View filing |
| 4 | Insider trade | 15y ago2010-12-02 | 2010-11-30 | View filing |
| 4 | Insider trade | 15y ago2010-12-02 | 2010-11-30 | View filing |
| 8-K | Major company event | 15y ago2010-12-02 | 2010-12-02 | View filing |
| 4 | Insider trade | 15y ago2010-11-19 | 2010-11-19 | View filing |
| 4 | Insider trade | 15y ago2010-11-17 | 2010-11-17 | View filing |
| 8-K | Major company event | 15y ago2010-11-17 | 2010-11-10 | View filing |
| 424B2 | Prospectus supplement | 15y ago2010-11-12 | - | View filing |
| FWP | Free writing prospectus | 15y ago2010-11-10 | - | View filing |
| 424B5 | Prospectus supplement | 15y ago2010-11-09 | - | View filing |
| 4 | Insider trade | 15y ago2010-11-08 | 2010-11-07 | View filing |
| S-8 | Employee stock plan | 15y ago2010-11-08 | - | View filing |
| S-8 | Employee stock plan | 15y ago2010-11-08 | - | View filing |
| S-8 | Employee stock plan | 15y ago2010-11-08 | - | View filing |
| SC 13G/A | Passive ownership stake (update) | 15y ago2010-11-05 | - | View filing |
| 4 | Insider trade | 15y ago2010-11-04 | 2010-11-04 | View filing |
| 4 | Insider trade | 15y ago2010-11-04 | 2010-11-04 | View filing |
| 10-Q | Quarterly report | 15y ago2010-11-04 | 2010-09-30 | View filing |
| 8-K | Major company event | 15y ago2010-10-29 | 2010-10-28 | View filing |
| 4 | Insider trade | 15y ago2010-10-07 | 2010-10-07 | View filing |
| 4 | Insider trade | 15y ago2010-10-07 | 2010-10-07 | View filing |
| 8-K | Major company event | 15y ago2010-09-10 | 2010-09-09 | View filing |
| 4 | Insider trade | 15y ago2010-09-02 | 2010-08-31 | View filing |
| 4 | Insider trade | 15y ago2010-09-02 | 2010-08-31 | View filing |
| 4 | Insider trade | 15y ago2010-09-02 | 2010-08-31 | View filing |
| 4 | Insider trade | 15y ago2010-09-02 | 2010-08-31 | View filing |
| 4 | Insider trade | 15y ago2010-09-02 | 2010-08-31 | View filing |
| 4 | Insider trade | 15y ago2010-09-02 | 2010-08-31 | View filing |
| 4 | Insider trade | 15y ago2010-09-02 | 2010-08-31 | View filing |
| 4 | Insider trade | 15y ago2010-09-02 | 2010-08-31 | View filing |
| 4 | Insider trade | 15y ago2010-09-02 | 2010-08-31 | View filing |
| 8-K | Major company event | 15y ago2010-09-01 | 2010-08-31 | View filing |
| 4 | Insider trade | 15y ago2010-08-17 | 2010-08-13 | View filing |
| 4 | Insider trade | 15y ago2010-08-17 | 2010-08-13 | View filing |
| 4 | Insider trade | 15y ago2010-08-17 | 2010-08-13 | View filing |
| 4 | Insider trade | 15y ago2010-08-17 | 2010-08-13 | View filing |
| 4 | Insider trade | 15y ago2010-08-17 | 2010-08-13 | View filing |