| Filed On | Filing |
|---|---|
| 18 Feb 2026 | 10-K |
| 19 Feb 2025 | 10-K |
| 14 Feb 2024 | 10-K |
| 15 Feb 2023 | 10-K |
| 16 Feb 2022 | 10-K |
| 19 Feb 2021 | 10-K |
| 20 Feb 2020 | FORM 10-K |
| 22 Feb 2019 | FORM 10-K |
| 20 Feb 2018 | FORM 10-K |
| 22 Feb 2017 | FORM 10-K |
| 29 Feb 2016 | FORM 10-K |
| 02 Mar 2015 | FORM 10-K |
| 03 Mar 2014 | FORM 10-K |
| 27 Feb 2013 | FORM 10-K |
| 29 Feb 2012 | OTTER TAIL CORPORATION 10-K |
| 28 Feb 2011 | OTTER TAIL CORP. 10-K |
| 26 Feb 2010 | FORM 10-K |
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