MDU RESOURCES GROUP INC - MDU
All tracked SEC files for this issuer. Showing up to 200 latest records.
Need parsed ownership details (13D/13G with shares/percent)?
Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 14
Latest filed: Aug 12, 2026
| Form | Count |
|---|---|
| SCHEDULE 13G | 5 |
| 4 | 4 |
| 8-K | 3 |
| SCHEDULE 13G/A | 2 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| Aug 12, 2026 | SCHEDULE 13G | — | 0000313028-26-000040 | View |
| Aug 06, 2026 | 8-K | Aug 06, 2026 | 0000067716-26-000064 | View |
| Jul 14, 2026 | SCHEDULE 13G/A | — | 0000354204-26-000843 | View |
| Jul 01, 2026 | 4 | Jun 30, 2026 | 0001225208-26-006306 | View |
| Jul 01, 2026 | 4 | Jun 30, 2026 | 0001225208-26-006307 | View |
| May 13, 2026 | 8-K | May 11, 2026 | 0000067716-26-000054 | View |
| May 13, 2026 | SCHEDULE 13G | — | 0000313028-26-000033 | View |
| May 07, 2026 | 8-K | May 07, 2026 | 0000067716-26-000045 | View |
| Apr 30, 2026 | SCHEDULE 13G | — | 0002100119-26-000863 | View |
| Apr 29, 2026 | SCHEDULE 13G | — | 0002100121-26-000489 | View |
| Apr 09, 2026 | SCHEDULE 13G | — | 0000354204-26-000563 | View |
| Apr 01, 2026 | 4 | Mar 31, 2026 | 0001225208-26-004135 | View |
| Apr 01, 2026 | 4 | Mar 31, 2026 | 0001225208-26-004136 | View |
| Mar 27, 2026 | SCHEDULE 13G/A | — | 0000102909-26-001749 | View |