| SC 13G/A | 2024-02-13 | VANGUARD GROUP INC | BLACK HILLS CORP /SD/ | 8,143,567 | 12.0% | EDGAR |
| SC 13G/A | 2024-01-25 | STATE STREET CORP | BLACK HILLS CORP /SD/ | - | 5.4% | EDGAR |
| SC 13G/A | 2024-01-22 | BlackRock Inc. | BLACK HILLS CORP /SD/ | 10,122,756 | 14.9% | EDGAR |
| SC 13G/A | 2023-02-09 | STATE STREET CORP | BLACK HILLS CORP /SD/ | - | 11.6% | EDGAR |
| SC 13G/A | 2023-02-09 | VANGUARD GROUP INC | BLACK HILLS CORP /SD/ | 7,103,703 | 10.9% | EDGAR |
| SC 13G/A | 2023-01-26 | BlackRock Inc. | BLACK HILLS CORP /SD/ | 10,877,391 | 16.7% | EDGAR |
| SC 13G/A | 2023-01-20 | BlackRock Inc. | BLACK HILLS CORP /SD/ | 10,877,391 | 16.7% | EDGAR |
| SC 13G/A | 2022-07-11 | STATE STREET CORP | BLACK HILLS CORP /SD/ | - | 10.0% | EDGAR |
| SC 13G/A | 2022-02-10 | STATE STREET CORP | BLACK HILLS CORP /SD/ | - | 8.2% | EDGAR |
| SC 13G/A | 2022-02-09 | VANGUARD GROUP INC | BLACK HILLS CORP /SD/ | 6,535,371 | 10.2% | EDGAR |
| SC 13G/A | 2022-01-28 | BlackRock Inc. | BLACK HILLS CORP /SD/ | 9,242,515 | 14.5% | EDGAR |
| SC 13G | 2021-02-11 | STATE STREET CORP | BLACK HILLS CORP /SD/ | - | 8.8% | EDGAR |
| SC 13G/A | 2021-02-10 | VANGUARD GROUP INC | BLACK HILLS CORP /SD/ | 6,576,633 | 10.5% | EDGAR |
| SC 13G/A | 2021-02-04 | WELLINGTON MANAGEMENT GROUP LLP | BLACK HILLS CORP /SD/ | 2,533,785 | 4.0% | EDGAR |
| SC 13G/A | 2021-01-26 | BlackRock Inc. | BLACK HILLS CORP /SD/ | 8,581,943 | 13.7% | EDGAR |
| SC 13G | 2020-02-13 | STATE STREET CORP | BLACK HILLS CORP /SD/ | - | 8.1% | EDGAR |
| SC 13G/A | 2020-02-12 | VANGUARD GROUP INC | BLACK HILLS CORP /SD/ | 6,849,873 | 11.1% | EDGAR |
| SC 13G/A | 2020-02-04 | BlackRock Inc. | BLACK HILLS CORP /SD/ | 8,582,829 | 14.0% | EDGAR |
| SC 13G | 2020-01-28 | WELLINGTON MANAGEMENT GROUP LLP | BLACK HILLS CORP /SD/ | 3,076,006 | 5.0% | EDGAR |
| SC 13G/A | 2019-03-11 | VANGUARD GROUP INC | BLACK HILLS CORP /SD/ | 6,027,490 | 10.0% | EDGAR |