| Filed On | Filing |
|---|---|
| 01 Apr 2026 | DEFA14A |
| 03 Apr 2025 | DEFA14A |
| 29 Apr 2024 | DEFA14A |
| 29 Mar 2024 | DEFA14A |
| 24 Mar 2023 | DEFA14A |
| 25 Mar 2022 | DEFA14A |
| 26 Mar 2021 | MDU RESOURCES GROUP, INC. 2021 PROXY NOTICE |
| 27 Mar 2020 | DEFA14A |
| 22 Mar 2019 | DEFA14A |
| 23 Mar 2018 | DEFA14A |
| 24 Mar 2017 | DEFA14A |
| 14 Apr 2016 | DEFA14A |
| 08 Apr 2010 | DEFA14A |
| 31 Mar 2006 | DEFA14A |
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