Knife River Corp (KNF)
NYSE · Mining & Quarrying of Nonmetallic Minerals (No Fuels) · Inc. DE
What they're doing
Not enough recent activity to summarise.
Signals, last 12 months
- Material 8-K filingFiled 8-K disclosing director or officer change
- Material 8-K filingFiled 8-K disclosing material agreement
Insider transactions
| Date | Insider | Role | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-20 | SANDBROOK WILLIAM J | director | A | 2,040 | 0 | $0 |
| 2026-05-20 | MOSS PATRICIA L | director | A | 2,040 | 0 | $0 |
| 2026-05-20 | Hill Thomas W. | director | A | 2,040 | 0 | $0 |
| 2026-05-20 | Fagg Karen B | director | A | 2,380 | 0 | $0 |
| 2026-05-20 | Chiodo Patricia | director | A | 2,040 | 0 | $0 |
| 2026-05-20 | Carmona-Alvarez German | director | A | 2,040 | 0 | $0 |
| 2026-05-20 | SANDBROOK WILLIAM J | director | A | 2,040 | 0 | $0 |
| 2026-05-20 | MOSS PATRICIA L | director | A | 2,040 | 0 | $0 |
| 2026-05-20 | Hill Thomas W. | director | A | 2,040 | 0 | $0 |
| 2026-05-20 | Fagg Karen B | director | A | 2,380 | 0 | $0 |
| 2026-05-20 | Chiodo Patricia | director | A | 2,040 | 0 | $0 |
| 2026-05-20 | Carmona-Alvarez German | director | A | 2,040 | 0 | $0 |
| 2026-03-06 | Gray Brian R. | director | A | 20,955 | 0 | $0 |
| 2026-03-06 | Gray Brian R. | director | A | 20,955 | 0 | $0 |
| 2026-03-04 | Kadrmas Marney L. | officer | A | 1,199 | 0 | $0 |
| 2026-03-04 | Pladsen Glenn R. | officer | A | 2,950 | 0 | $0 |
| 2026-03-04 | LaChapelle Sarah L. | officer | A | 2,713 | 0 | $0 |
| 2026-03-04 | Liepitz Karl A | officer | A | 4,611 | 0 | $0 |
| 2026-03-04 | Ring Nathan W | officer | A | 5,211 | 0 | $0 |
| 2026-03-04 | Hastings Trevor J | officer | A | 6,130 | 0 | $0 |
| 2026-03-04 | Kadrmas Marney L. | officer | A | 1,199 | 0 | $0 |
| 2026-03-04 | Pladsen Glenn R. | officer | A | 2,950 | 0 | $0 |
| 2026-03-04 | LaChapelle Sarah L. | officer | A | 2,713 | 0 | $0 |
| 2026-03-04 | Liepitz Karl A | officer | A | 4,611 | 0 | $0 |
| 2026-03-04 | Ring Nathan W | officer | A | 5,211 | 0 | $0 |
| 2026-03-04 | Hastings Trevor J | officer | A | 6,130 | 0 | $0 |
| 2026-02-12 | Kadrmas Marney L. | officer | F | 1,232 | 81.74 | $100,704 |
| 2026-02-12 | Ring Nathan W | officer | F | 4,336 | 81.74 | $354,425 |
| 2026-02-12 | Pladsen Glenn R. | officer | F | 1,569 | 81.74 | $128,250 |
| 2026-02-12 | Pladsen Glenn R. | officer | F | 1,385 | 81.74 | $113,210 |
| 2026-02-12 | Liepitz Karl A | officer | F | 8,648 | 81.74 | $706,888 |
| 2026-02-12 | Gray Brian R. | director | F | 19,572 | 81.74 | $1,599,815 |
| 2026-02-12 | Gray Brian R. | director | F | 10,072 | 81.74 | $823,285 |
| 2026-02-12 | Hastings Trevor J | officer | F | 2,880 | 81.74 | $235,411 |
| 2026-02-12 | Hastings Trevor J | officer | F | 4,599 | 81.74 | $375,922 |
| 2026-02-12 | Ring Nathan W | officer | F | 1,922 | 81.74 | $157,104 |
| 2026-02-12 | Ring Nathan W | officer | F | 4,336 | 81.74 | $354,425 |
| 2026-02-12 | Kadrmas Marney L. | officer | F | 1,232 | 81.74 | $100,704 |
| 2026-02-12 | Pladsen Glenn R. | officer | F | 1,385 | 81.74 | $113,210 |
| 2026-02-12 | Pladsen Glenn R. | officer | F | 1,569 | 81.74 | $128,250 |
| 2026-02-12 | Liepitz Karl A | officer | F | 8,648 | 81.74 | $706,888 |
| 2026-02-12 | Gray Brian R. | director | F | 10,072 | 81.74 | $823,285 |
| 2026-02-12 | Gray Brian R. | director | F | 19,572 | 81.74 | $1,599,815 |
| 2026-02-12 | Hastings Trevor J | officer | F | 2,880 | 81.74 | $235,411 |
| 2026-02-12 | Hastings Trevor J | officer | F | 4,599 | 81.74 | $375,922 |
| 2026-02-12 | Ring Nathan W | officer | F | 1,922 | 81.74 | $157,104 |
| 2025-05-22 | Carmona-Alvarez German | director | A | 1,551 | 0 | $0 |
| 2025-05-22 | Chiodo Patricia | director | A | 1,551 | 0 | $0 |
| 2025-05-22 | Fagg Karen B | director | A | 1,810 | 0 | $0 |
| 2025-05-22 | Hill Thomas W. | director | A | 1,551 | 0 | $0 |
Federal contracts
No federal contract actions on record for this recipient mapping.
Lobbying
No federal lobbying filings on record for this client mapping.
Public attention
No Wikipedia pageview data linked to this company.
Recent filings
- 2026-08-14 SCHEDULE 13G/A
- 2026-08-12 SCHEDULE 13G
- 2026-08-04 10-Q
- 2026-08-04 8-K
- 2026-07-31 SCHEDULE 13G
- 2026-07-01 4
- 2026-06-17 11-K
- 2026-05-21 4
- 2026-05-21 4
- 2026-05-21 4
- 2026-05-21 4
- 2026-05-21 4
- 2026-05-21 4
- 2026-05-21 3
- 2026-05-21 8-K
- 2026-05-18 8-K
- 2026-05-15 SCHEDULE 13G/A
- 2026-05-05 10-Q
- 2026-05-05 8-K
- 2026-04-30 SCHEDULE 13G