PART I Otter Tail Corporation (OTC) is a holding company which has strategically invested in a portfolio of diversified operations including an electric utility and manufacturing and plastic pipe businesses. Our corporate offices are located in Fergus Falls, Minnesota and Fargo, North Dakota. We classify our five operating companies into three reportable segments consistent with our business strategy and management structure. The following table depicts our three segments and the subsidiary enti...
Q2 FY2026 — expected 2026-08-05
| Filed | Period | Accession | Source | Full Text |
|---|---|---|---|---|
| 2026-02-18 | 2025-12-31 | 0001466593-26-000008 | EDGAR | 62K words |
| 2025-02-19 | 2024-12-31 | 0001466593-25-000034 | EDGAR | — |
| 2024-02-14 | 2023-12-31 | 0001466593-24-000039 | EDGAR | — |
| 2023-02-15 | 2022-12-31 | 0001466593-23-000053 | EDGAR | — |
| 2022-02-16 | 2021-12-31 | 0001466593-22-000010 | EDGAR | — |
| 2021-02-19 | 2020-12-31 | 0001466593-21-000011 | EDGAR | — |
| 2020-02-20 | 2019-12-31 | 0001437749-20-003157 | EDGAR | — |
| 2019-02-22 | 2018-12-31 | 0001437749-19-003150 | EDGAR | — |
| 2018-02-20 | 2017-12-31 | 0001437749-18-002843 | EDGAR | — |
| 2017-02-22 | 2016-12-31 | 0001571049-17-001533 | EDGAR | — |
| Filed | Period | Accession | Source | Full Text |
|---|---|---|---|---|
| 2025-11-05 | 2025-09-30 | 0001466593-25-000122 | EDGAR | 24K words |
| 2025-08-06 | 2025-06-30 | 0001466593-25-000107 | EDGAR | — |
| 2025-05-07 | 2025-03-31 | 0001466593-25-000083 | EDGAR | — |
| 2024-11-07 | 2024-09-30 | 0001466593-24-000140 | EDGAR | — |
| 2024-08-07 | 2024-06-30 | 0001466593-24-000129 | EDGAR | — |
| 2024-05-08 | 2024-03-31 | 0001466593-24-000113 | EDGAR | — |
| 2023-11-03 | 2023-09-30 | 0001466593-23-000161 | EDGAR | — |
| 2023-08-02 | 2023-06-30 | 0001466593-23-000148 | EDGAR | — |
| 2023-05-03 | 2023-03-31 | 0001466593-23-000127 | EDGAR | — |
| 2022-11-02 | 2022-09-30 | 0001466593-22-000075 | EDGAR | — |
| 2022-08-03 | 2022-06-30 | 0001466593-22-000051 | EDGAR | — |
| 2022-05-04 | 2022-03-31 | 0001466593-22-000031 | EDGAR | — |
| Filed | Accession | Source | Full Text |
|---|---|---|---|
| 2026-03-23 | 0001466593-26-000034 | EDGAR | 38K words |
| 2026-02-17 | 0001466593-26-000002 | EDGAR | — |
| 2025-12-18 | 0001466593-25-000128 | EDGAR | — |
| 2025-11-04 | 0001466593-25-000119 | EDGAR | — |
| 2025-08-05 | 0001466593-25-000102 | EDGAR | — |
| 2025-06-06 | 0001466593-25-000097 | EDGAR | — |
| 2025-06-05 | 0001466593-25-000091 | EDGAR | — |
| 2025-05-06 | 0001466593-25-000080 | EDGAR | — |
| 2025-04-17 | 0001466593-25-000075 | EDGAR | — |
| 2025-03-31 | 0001466593-25-000054 | EDGAR | — |
260 total filings indexed. 228 additional filings (S-1, DEF 14A, etc.) View all (JSON) · SEC EDGAR
| CIK | 0001466593 |
| Ticker | OTTR |
| Exchange | Nasdaq |
| SIC | 4911: Electric Services |
| Incorporated | MN |
| Website | https://www.ottertail.com |
| Listed | 1972-06-01 |
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