KNF - CIK 0001955520
Knife River Corp has filed 176 documents with the SEC between 2022 and 2026. The most frequent type is insider trade (62 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.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| Major company event | 8-K | 2026-05-21 | 2026-05-20 |
| Insider trade | 4 | 2026-05-21 | 2026-05-20 |
| Insider trade | 4 | 2026-05-21 | 2026-05-20 |
| Insider trade | 4 | 2026-05-21 | 2026-05-20 |
| Insider trade | 4 | 2026-05-21 | 2026-05-20 |
| Insider trade | 4 | 2026-05-21 | 2026-05-20 |
| Insider trade | 4 | 2026-05-21 | 2026-05-20 |
| New insider ownership | 3 | 2026-05-21 | 2026-05-21 |
| Major company event | 8-K | 2026-05-18 | 2026-05-15 |
| SCHEDULE 13G/A | - | 2026-05-15 | - |
| Quarterly report | 10-Q | 2026-05-05 | 2026-03-31 |
| Major company event | 8-K | 2026-05-05 | 2026-05-05 |
| SCHEDULE 13G | - | 2026-04-30 | - |
| Annual report to shareholders | ARS | 2026-04-06 | 2025-12-31 |
| Proxy materials | DEFA14A | 2026-04-06 | - |
| Proxy statement | DEF 14A | 2026-04-06 | 2026-05-20 |
| Insider trade | 4 | 2026-04-01 | 2026-03-31 |
| SCHEDULE 13G/A | - | 2026-03-27 | - |
| Insider trade | 4 | 2026-03-09 | 2026-03-06 |
| Insider trade | 4 | 2026-03-05 | 2026-03-04 |
| Insider trade | 4 | 2026-03-05 | 2026-03-04 |
| Insider trade | 4 | 2026-03-05 | 2026-03-04 |
| Insider trade | 4 | 2026-03-05 | 2026-03-04 |
| Insider trade | 4 | 2026-03-05 | 2026-03-04 |
| Insider trade | 4 | 2026-03-05 | 2026-03-04 |
| Annual report | 10-K | 2026-02-20 | 2025-12-31 |
| Major company event | 8-K | 2026-02-17 | 2026-02-17 |
| Insider trade | 4 | 2026-02-17 | 2026-02-12 |
| Insider trade | 4 | 2026-02-17 | 2026-02-12 |
| Insider trade | 4 | 2026-02-17 | 2026-02-12 |
| Insider trade | 4 | 2026-02-17 | 2026-02-12 |
| Insider trade | 4 | 2026-02-17 | 2026-02-12 |
| Insider trade | 4 | 2026-02-17 | 2026-02-12 |
| SCHEDULE 13G/A | - | 2025-11-14 | - |
| Quarterly report | 10-Q | 2025-11-05 | 2025-09-30 |
| Major company event | 8-K | 2025-11-04 | 2025-11-04 |
| SCHEDULE 13G | - | 2025-08-14 | - |
| Quarterly report | 10-Q | 2025-08-05 | 2025-06-30 |
| Major company event | 8-K | 2025-08-05 | 2025-08-05 |
| Employee plan annual report | 11-K | 2025-06-12 | 2024-12-31 |
| Major company event | 8-K | 2025-05-28 | 2025-05-22 |
| Insider trade | 4 | 2025-05-27 | 2025-05-22 |
| Insider trade | 4 | 2025-05-27 | 2025-05-22 |
| Insider trade | 4 | 2025-05-27 | 2025-05-22 |
| Insider trade | 4 | 2025-05-27 | 2025-05-22 |
| Insider trade | 4 | 2025-05-27 | 2025-05-22 |
| Insider trade | 4 | 2025-05-27 | 2025-05-22 |
| SEC correspondence | UPLOAD | 2025-05-27 | - |
| Company correspondence | CORRESP | 2025-05-14 | - |
| SEC correspondence | UPLOAD | 2025-05-08 | - |