Otter Tail Corp - OTTR
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: 33
Latest filed: Apr 15, 2026
| Form | Count |
|---|---|
| 4 | 26 |
| 8-K | 6 |
| SCHEDULE 13G/A | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| Apr 15, 2026 | 4 | Apr 13, 2026 | 0002002077-26-000009 | View |
| Apr 15, 2026 | 4 | Apr 13, 2026 | 0001605621-26-000007 | View |
| Apr 15, 2026 | 4 | Apr 13, 2026 | 0002129002-26-000004 | View |
| Apr 15, 2026 | 4 | Apr 13, 2026 | 0001726153-26-000007 | View |
| Apr 15, 2026 | 8-K | Apr 13, 2026 | 0001466593-26-000040 | View |
| Apr 14, 2026 | 4 | Apr 13, 2026 | 0001901903-26-000002 | View |
| Apr 14, 2026 | 4 | Apr 13, 2026 | 0001629899-26-000005 | View |
| Apr 14, 2026 | 4 | Apr 13, 2026 | 0001297719-26-000005 | View |
| Apr 14, 2026 | 4 | Apr 13, 2026 | 0001179875-26-000002 | View |
| Apr 14, 2026 | 4 | Apr 13, 2026 | 0001959390-26-000002 | View |
| Apr 14, 2026 | 4 | Apr 13, 2026 | 0001191483-26-000002 | View |
| Apr 14, 2026 | 8-K | Apr 13, 2026 | 0001466593-26-000037 | View |
| Apr 14, 2026 | 4 | Apr 13, 2026 | 0001959466-26-000002 | View |
| Apr 14, 2026 | 4 | Apr 13, 2026 | 0001574100-26-000002 | View |
| Apr 14, 2026 | 4 | Apr 13, 2026 | 0001180965-26-000002 | View |
| Apr 09, 2026 | 4 | Apr 08, 2026 | 0002002077-26-000007 | View |
| Mar 27, 2026 | SCHEDULE 13G/A | — | 0000102909-26-001980 | View |
| Mar 23, 2026 | 8-K | Mar 19, 2026 | 0001466593-26-000034 | View |
| Feb 17, 2026 | 8-K | Feb 16, 2026 | 0001466593-26-000002 | View |
| Feb 12, 2026 | 4 | Feb 10, 2026 | 0002002077-26-000005 | View |
| Feb 12, 2026 | 4 | Feb 10, 2026 | 0001726153-26-000005 | View |
| Feb 12, 2026 | 4 | Feb 10, 2026 | 0001559334-26-000004 | View |
| Feb 12, 2026 | 4 | Feb 10, 2026 | 0001278053-26-000005 | View |
| Feb 12, 2026 | 4 | Feb 10, 2026 | 0001605621-26-000005 | View |
| Feb 12, 2026 | 4 | Feb 10, 2026 | 0001639060-26-000006 | View |
| Feb 09, 2026 | 4 | Feb 06, 2026 | 0001726153-26-000002 | View |
| Feb 09, 2026 | 4 | Feb 06, 2026 | 0001559334-26-000002 | View |
| Feb 09, 2026 | 4 | Feb 06, 2026 | 0001639060-26-000002 | View |
| Feb 09, 2026 | 4 | Feb 06, 2026 | 0001278053-26-000002 | View |
| Feb 09, 2026 | 4 | Feb 06, 2026 | 0001605621-26-000002 | View |
| Feb 09, 2026 | 4 | Feb 06, 2026 | 0002002077-26-000002 | View |
| Dec 18, 2025 | 8-K | Dec 16, 2025 | 0001466593-25-000128 | View |
| Nov 04, 2025 | 8-K | Nov 03, 2025 | 0001466593-25-000119 | View |