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: 30
Latest filed: Sep 01, 2026
| Form | Count |
|---|---|
| 4 | 16 |
| 8-K | 10 |
| SCHEDULE 13G | 2 |
| 144 | 1 |
| SCHEDULE 13G/A | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| Sep 01, 2026 | 8-K | Aug 28, 2026 | 0001466593-26-000074 | View |
| Aug 12, 2026 | 4 | Aug 10, 2026 | 0001559334-26-000010 | View |
| Aug 11, 2026 | 4 | Aug 07, 2026 | 0001559334-26-000006 | View |
| Aug 07, 2026 | 144 | — | 0001958244-26-000494 | View |
| Aug 04, 2026 | 8-K | Aug 03, 2026 | 0001466593-26-000068 | View |
| Jun 18, 2026 | 8-K | Jun 17, 2026 | 0001466593-26-000063 | View |
| Jun 05, 2026 | 8-K | Jun 04, 2026 | 0001466593-26-000061 | View |
| May 29, 2026 | 8-K | May 28, 2026 | 0001466593-26-000057 | View |
| May 15, 2026 | 8-K | May 15, 2026 | 0001466593-26-000054 | View |
| May 05, 2026 | 8-K | May 04, 2026 | 0001466593-26-000049 | View |
| Apr 30, 2026 | SCHEDULE 13G | — | 0002100119-26-000905 | View |
| Apr 29, 2026 | SCHEDULE 13G | — | 0002100121-26-000602 | View |
| 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 |