Otter Tail Corp
OTTRNasdaqCIK 1466593UtilitiesFiscal year ends Dec 31
Reports and events: 275 filings
Newest first, by EDGAR acceptance time (Eastern). Each filing’s page lists its documents on sec.gov and, for 10-K and 10-Q reports, the extracted sections.
What the forms are: 10-K, 10-Q, 8-K, Form 4, DEF 14A, Schedule 13D, Schedule 13G, amendments, accession numbers.
| Filed | Form | What it is | Accession number |
|---|---|---|---|
| 2026-09-0109:58 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0001466593-26-000074 |
| 2026-08-0512:58 ET | 10-Q | Quarterly reportPeriod 2026-06-30 | 0001466593-26-000071 |
| 2026-08-0408:29 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001466593-26-000068 |
| 2026-06-1808:02 ET | 8-K | 1.01 Entry into a material agreement | 0001466593-26-000063 |
| 2026-06-0509:52 ET | 8-K | 2.03 New direct financial obligation | 0001466593-26-000061 |
| 2026-05-2910:47 ET | 8-K | 1.01 Entry into a material agreement | 0001466593-26-000057 |
| 2026-05-1513:57 ET | 8-K | 8.01 Other events | 0001466593-26-000054 |
| 2026-05-0613:17 ET | 10-Q | Quarterly reportPeriod 2026-03-31 | 0001466593-26-000051 |
| 2026-05-0509:16 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001466593-26-000049 |
| 2026-04-1510:04 ET | 8-K | 5.07 Shareholder vote results | 0001466593-26-000040 |
| 2026-04-1414:32 ET | 8-K | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001466593-26-000037 |
| 2026-03-2309:40 ET | 8-K | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001466593-26-000034 |
| 2026-03-0210:15 ET | DEF 14A | Proxy statementPeriod 2026-04-13 | 0001466593-26-000023 |
| 2026-02-2316:03 ET | 10-K/A | Annual report, amendedPeriod 2025-12-31 | 0001466593-26-000015 |
| 2026-02-1813:27 ET | 10-K | Annual reportPeriod 2025-12-31 | 0001466593-26-000008 |
| 2026-02-1709:18 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001466593-26-000002 |
| 2025-12-1809:16 ET | 8-K | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001466593-25-000128 |
| 2025-11-0516:19 ET | 10-Q | Quarterly reportPeriod 2025-09-30 | 0001466593-25-000122 |
| 2025-11-0409:23 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001466593-25-000119 |
| 2025-08-0613:54 ET | 10-Q | Quarterly reportPeriod 2025-06-30 | 0001466593-25-000107 |
| 2025-08-0509:20 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001466593-25-000102 |
| 2025-06-0609:34 ET | 8-K | 2.03 New direct financial obligation | 0001466593-25-000097 |
| 2025-06-0509:58 ET | 8-K | 8.01 Other events | 0001466593-25-000091 |
| 2025-05-0712:13 ET | 10-Q | Quarterly reportPeriod 2025-03-31 | 0001466593-25-000083 |
| 2025-05-0608:28 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001466593-25-000080 |
| 2025-04-1710:17 ET | 8-K | 5.07 Shareholder vote results | 0001466593-25-000075 |
| 2025-03-3110:31 ET | 8-K | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001466593-25-000054 |
| 2025-03-0309:27 ET | DEF 14A | Proxy statementPeriod 2024-12-31 | 0001466593-25-000049 |
| 2025-02-1915:09 ET | 10-K | Annual reportPeriod 2024-12-31 | 0001466593-25-000034 |
| 2025-02-1808:34 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001466593-25-000027 |
| 2024-12-3115:09 ET | 8-K | 8.01 Other events | 0001466593-24-000149 |
| 2024-12-1615:23 ET | 8-K | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001466593-24-000147 |
| 2024-11-0712:30 ET | 10-Q | Quarterly reportPeriod 2024-09-30 | 0001466593-24-000140 |
| 2024-11-0508:36 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001466593-24-000136 |
| 2024-10-0316:15 ET | SC 13D/A | Ownership report, active investor, amended | 0001104659-24-105851 |
| 2024-08-0712:48 ET | 10-Q | Quarterly reportPeriod 2024-06-30 | 0001466593-24-000129 |
| 2024-08-0609:15 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001466593-24-000125 |
| 2024-06-0510:48 ET | 8-K | 8.01 Other events | 0001466593-24-000121 |
| 2024-05-0815:37 ET | 10-Q | Quarterly reportPeriod 2024-03-31 | 0001466593-24-000113 |
| 2024-05-0709:21 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001466593-24-000109 |
| 2024-04-1010:03 ET | 8-K | 5.07 Shareholder vote results | 0001466593-24-000085 |
| 2024-04-0508:58 ET | 8-K | 8.01 Other events | 0001466593-24-000064 |
| 2024-04-0209:55 ET | 8-K | 1.01 Entry into a material agreement; 2.03 New direct financial obligation | 0001466593-24-000061 |
| 2024-02-2809:11 ET | DEF 14A | Proxy statementPeriod 2023-12-31 | 0001466593-24-000055 |
| 2024-02-1416:05 ET | 10-K | Annual reportPeriod 2023-12-31 | 0001466593-24-000039 |
| 2024-02-1309:11 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001466593-24-000034 |
| 2024-01-2909:26 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0001466593-24-000010 |
| 2023-12-2112:59 ET | 8-K | 8.01 Other events | 0001466593-23-000165 |
| 2023-11-0313:13 ET | 10-Q | Quarterly reportPeriod 2023-09-30 | 0001466593-23-000161 |
| 2023-10-3109:26 ET | 8-K | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001466593-23-000159 |
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 24, 2026, 15:08 ET. Listed shows no prices and gives no investment advice.