Knife River Corp
KNF- Exchange
- NYSE
- Industry
- Mining & Quarrying of Nonmetallic Minerals (No Fuels)
- SEC CIK
- 0001955520
No open-market purchases or sales by Knife River Corp insiders were filed in the last 90 days; 392 institutions reported holding it in 13F filings for Q2 2026, worth $4.59B in total; no superinvestor holds it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Knife River Corp insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 0 filings
- Insiders trading
- 0
- Net value
- $0
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Knife River Corp, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Fagg Karen B | Director | 33,317 | Jul 1, 2026 | 3 |
| Moss Patricia L | Director | 31,874 | May 21, 2026 | 1 |
| Hill Thomas W. | Director | 5,496 | May 21, 2026 | 1 |
| Chiodo Patricia | Director | 5,553 | May 21, 2026 | 1 |
| Sandbrook William J | Director | 7,735 | May 21, 2026 | 1 |
| Carmona-Alvarez German | Director | 9,025 | May 21, 2026 | 1 |
| Gray Brian R. | President & CEO | 84,747 | Mar 9, 2026 | 2 |
| Ring Nathan W | Vice President & CFO | 30,530 | Mar 5, 2026 | 2 |
| Hastings Trevor J | Vice President & COO | 46,760 | Mar 5, 2026 | 2 |
| Liepitz Karl A | VP, Chief Legal Officer & Sec. | 44,312 | Mar 5, 2026 | 2 |
| Pladsen Glenn R. | VP & Chief Excellence Officer | 22,094 | Mar 5, 2026 | 2 |
| Kadrmas Marney L. | VP & Chief Accounting Officer | 4,917 | Mar 5, 2026 | 2 |
| LaChapelle Sarah L. | VP & Chief People Officer | 4,578 | Mar 5, 2026 | 1 |
| Christenson Nancy K. | VP of Administration | 25,776 | Mar 3, 2025 | 0 |
| Everist Thomas S | Director | 30,260 | Nov 16, 2023 | 0 |
| Mdu Resources Group Inc | 10% Owner | 0 | Nov 13, 2023 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Mar 4, 2024 (view filing) | Feb 29 | 4 days | Gray Brian R.President & CEO | PPurchaseCommon Stock - 401(k) | +1 | $73.65 | +$73.65 | 0.0%8.17K after |