KNF · Insider Trading
Knife River Corporation
Every open-market purchase and sale reported by KNF officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-01 | Karen B Fagg | Director | A | — | — |
| 2026-07-01 | Karen B Fagg | Director | A | — | — |
| 2026-05-21 | German Carmona-Alvarez | Director | A | +2,040 | — |
| 2026-05-21 | Patricia Chiodo | Director | A | +2,040 | — |
| 2026-05-21 | Karen B Fagg | Director | A | +2,380 | — |
| 2026-05-21 | Thomas W. Hill | Director | A | +2,040 | — |
| 2026-05-21 | Patricia L Moss | Director | A | +2,040 | — |
| 2026-05-21 | William J Sandbrook | Director | A | +2,040 | — |
| 2026-04-01 | Karen B Fagg | Director | A | — | — |
| 2026-03-09 | Brian R. Gray | President & CEO | A | +20,955 | — |
| 2026-03-05 | Trevor J Hastings | Vice President & COO | A | +6,130 | — |
| 2026-03-05 | Nathan W Ring | Vice President & CFO | A | +5,211 | — |
| 2026-03-05 | Karl A Liepitz | VP, Chief Legal Officer & Sec. | A | +4,611 | — |
| 2026-03-05 | Sarah L. LaChapelle | VP & Chief People Officer | A | +2,713 | — |
| 2026-03-05 | Glenn R. Pladsen | VP & Chief Excellence Officer | A | +2,950 | — |
| 2026-03-05 | Marney L. Kadrmas | VP & Chief Accounting Officer | A | +1,199 | — |
| 2026-02-17 | Marney L. Kadrmas | VP & Chief Accounting Officer | F | −1,232 | −$100.70K |
| 2026-02-17 | Nathan W Ring | Vice President & CFO | F | −6,258 | −$511.53K |
| 2026-02-17 | Trevor J Hastings | Vice President & COO | F | −7,479 | −$611.33K |
| 2026-02-17 | Brian R. Gray | President & CEO | F | −29,644 | −$2.42M |
| 2026-02-17 | Karl A Liepitz | VP, Chief Legal Officer & Sec. | F | −8,648 | −$706.89K |
| 2026-02-17 | Glenn R. Pladsen | VP & Chief Excellence Officer | F | −2,954 | −$241.46K |
| 2025-05-27 | German Carmona-Alvarez | Director | A | +1,551 | — |
| 2025-05-27 | Patricia Chiodo | Director | A | +1,551 | — |
| 2025-05-27 | Karen B Fagg | Director | A | +1,810 | — |
| 2025-05-27 | Thomas W. Hill | Director | A | +1,551 | — |
| 2025-05-27 | Patricia L Moss | Director | A | +1,551 | — |
| 2025-05-27 | William J Sandbrook | Director | A | +1,551 | — |
| 2025-03-03 | Nancy K. Christenson | VP of Administration | F | −1,583 | −$149.96K |
| 2025-03-03 | Marney L. Kadrmas | VP & Chief Accounting Officer | A | +709 | — |
| 2025-03-03 | Nathan W Ring | Vice President & CFO | MIXED | +1,416 | −$160.85K |
| 2025-03-03 | Glenn R. Pladsen | VP & Chief Excellence Officer | MIXED | +494 | −$122.39K |
| 2025-03-03 | Karl A Liepitz | VP, Chief Legal Officer & Sec. | MIXED | −4,313 | −$670.97K |
| 2025-03-03 | Trevor J Hastings | Vice President & COO | MIXED | −902 | −$380.44K |
| 2025-03-03 | Brian R. Gray | President & CEO | A | +12,599 | — |
| 2025-01-02 | Karen B Fagg | Director | A | — | — |
| 2024-10-01 | Karen B Fagg | Director | A | — | — |
| 2024-06-28 | Karen B Fagg | Director | A | — | — |
| 2024-06-28 | Patricia Chiodo | Director | A | +1,962 | — |
| 2024-05-16 | German Carmona-Alvarez | Director | A | +2,625 | +$55.58K |
| 2024-05-16 | Karen B Fagg | Director | A | +3,063 | +$64.92K |
| 2024-05-16 | Thomas W. Hill | Director | A | +1,905 | — |
| 2024-05-16 | Patricia L Moss | Director | A | +2,625 | +$55.58K |
| 2024-05-16 | William J Sandbrook | Director | A | +2,625 | +$55.58K |
| 2024-04-01 | Karen B Fagg | Director | A | — | — |
| 2024-03-04 | Brian R. Gray | President & CEO | Buy | +1 | +$74 |
| 2024-02-26 | Nancy K. Christenson | VP of Administration | MIXED | +773 | −$100.12K |
| 2024-02-26 | Trevor J Hastings | Vice President & COO | MIXED | +1,525 | −$237.96K |
| 2024-02-26 | Brian R. Gray | President & CEO | A | +17,769 | — |
| 2024-02-26 | Marney L. Kadrmas | Chief Accounting Officer | A | +1,050 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Brian R. Gray | President & CEO | 92,911 | $5.55M |
| Trevor J Hastings | Vice President & COO | 48,244 | $2.88M |
| Nancy K. Christenson | VP of Administration | 47,109 | $2.81M |
| Karl A Liepitz | VP, Chief Legal Officer & Sec. | 46,208 | $2.76M |
| Karen B Fagg | Director | 33,317 | $1.99M |
| Nathan W Ring | Vice President & CFO | 32,932 | $1.97M |
| Patricia L Moss | Director | 31,874 | $1.90M |
| Glenn R. Pladsen | VP & Chief Excellence Officer | 25,579 | $1.53M |
| German Carmona-Alvarez | Director | 9,025 | $538.70K |
| William J Sandbrook | Director | 7,735 | $461.70K |
| Marney L. Kadrmas | VP & Chief Accounting Officer | 7,377 | $440.34K |
| Sarah L. LaChapelle | VP & Chief People Officer | 6,475 | $386.54K |
| Patricia Chiodo | Director | 5,553 | $331.46K |
| Thomas W. Hill | Director | 5,496 | $328.06K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the KNF quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.