Mdu Resources Group Inc SEC filings MDU
Mdu Resources Group Inc has 1,004 filings in SEC EDGAR's recent list, going back to Dec 8, 2010. Its latest annual report, Form ARS, was filed on Apr 1, 2026 for the period ended Mar 31, 2026. The latest quarterly report (Form 10-Q) was filed on Aug 6, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| DEFA14A | Additional proxy material | Apr 1, 2026 | — |
| DEF 14A | Proxy statement | Apr 1, 2026 | May 11, 2026 |
| DEFA14A | Additional proxy material | Apr 3, 2025 | — |
| DEF 14A | Proxy statement | Apr 3, 2025 | May 13, 2025 |
| DEFA14A | Additional proxy material | Apr 29, 2024 | — |
| DEFA14A | Additional proxy material | Mar 29, 2024 | — |
| DEF 14A | Proxy statement | Mar 29, 2024 | May 14, 2024 |
| DEFA14A | Additional proxy material | Mar 24, 2023 | — |
| DEF 14A | Proxy statement | Mar 24, 2023 | — |
| DEFA14A | Additional proxy material | Mar 25, 2022 | — |
| DEF 14A | Proxy statement | Mar 25, 2022 | May 10, 2022 |
| DEFA14A | Additional proxy material | Mar 26, 2021 | — |
| DEF 14A | Proxy statement | Mar 26, 2021 | May 11, 2021 |
| DEFA14A | Additional proxy material | Mar 27, 2020 | — |
| DEF 14A | Proxy statement | Mar 27, 2020 | May 12, 2020 |
| DEFA14A | Additional proxy material | Mar 22, 2019 | — |
| DEF 14A | Proxy statement | Mar 22, 2019 | May 7, 2019 |
| PRE 14A | Preliminary proxy statement | Mar 8, 2019 | May 7, 2019 |
| DEFA14A | Additional proxy material | Mar 23, 2018 | — |
| DEF 14A | Proxy statement | Mar 23, 2018 | May 8, 2018 |
| DEFA14A | Additional proxy material | Mar 24, 2017 | — |
| DEF 14A | Proxy statement | Mar 24, 2017 | Mar 24, 2017 |
| PRE 14A | Preliminary proxy statement | Mar 14, 2017 | Mar 14, 2017 |
| DEFA14A | Additional proxy material | Apr 14, 2016 | — |
| DEF 14A | Proxy statement | Mar 16, 2016 | Mar 16, 2016 |
| DEF 14A | Proxy statement | Mar 18, 2015 | Apr 28, 2015 |
| DEF 14A | Proxy statement | Mar 12, 2014 | Apr 22, 2014 |
| DEF 14A | Proxy statement | Mar 13, 2013 | Apr 23, 2013 |
| DEF 14A | Proxy statement | Mar 9, 2012 | Apr 24, 2012 |
| DEF 14A | Proxy statement | Mar 11, 2011 | Apr 26, 2011 |
Showing 30 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Natural Gas Distribution (SIC 4924)
- Listed as
- MDU (NYSE)
- Fiscal year ends
- December 31
- Headquarters
- Bismarck, ND
- SEC filer status
- Large accelerated filer
- SEC CIK
- 67716
- Former names
- MDU RESOURCES GROUP INC (until Nov 5, 2026)
Other Natural Gas Distribution companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.