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 |
|---|---|---|---|
| 11-K | Employee savings plan report | Jun 18, 2026 | Dec 31, 2025 |
| 11-K/A | Mdu resources group, inc. form 11-k/a | Jun 23, 2025 | Dec 31, 2024 |
| 11-K | Employee savings plan report | Jun 18, 2025 | Dec 31, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2025 | — |
| 11-K | Employee savings plan report | Jun 26, 2024 | Dec 31, 2023 |
| SD | Specialized disclosure (conflict minerals) | May 22, 2024 | — |
| 11-K | Employee savings plan report | Jun 21, 2023 | Dec 31, 2022 |
| SD | Specialized disclosure (conflict minerals) | May 24, 2023 | — |
| 11-K | Employee savings plan report | Jun 27, 2022 | Dec 31, 2021 |
| UPLOAD | Letter from the SEC | Jun 23, 2022 | — |
| SD | Specialized disclosure (conflict minerals) | May 25, 2022 | — |
| CORRESP | Letter to the SEC | May 16, 2022 | — |
| CORRESP | Letter to the SEC | Apr 26, 2022 | — |
| UPLOAD | Letter from the SEC | Apr 14, 2022 | — |
| 11-K | Employee savings plan report | Jun 22, 2021 | Dec 31, 2020 |
| SD | Specialized disclosure (conflict minerals) | May 27, 2021 | — |
| 11-K | Employee savings plan report | Jun 12, 2020 | Dec 31, 2019 |
| SD | Specialized disclosure (conflict minerals) | May 26, 2020 | — |
| 11-K | Employee savings plan report | Jun 14, 2019 | Dec 31, 2018 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2019 | — |
| 15-12B | Deregistration | Jan 14, 2019 | — |
| 25-NSE | Delisting notice | Jan 2, 2019 | — |
| POSASR | Filing | Jan 2, 2019 | — |
| 8-K12B | Filing | Jan 2, 2019 | Dec 31, 2018 |
| 11-K | Employee savings plan report | Jun 15, 2018 | Dec 31, 2017 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2018 | — |
| 11-K | Employee savings plan report | Jun 16, 2017 | Dec 31, 2016 |
| SD | Specialized disclosure (conflict minerals) | May 25, 2017 | — |
| POSASR | Filing | Dec 5, 2016 | — |
| 11-K | Employee savings plan report | Jun 17, 2016 | Dec 31, 2015 |
| SD | Specialized disclosure (conflict minerals) | May 26, 2016 | — |
| 11-K | Employee savings plan report | Jun 12, 2015 | Dec 31, 2014 |
| SD | Specialized disclosure (conflict minerals) | May 28, 2015 | — |
| 8-A12B/A | 8-a12b/a amendment no. 9 | May 8, 2015 | — |
| DEFR14A | Filing | Mar 24, 2015 | — |
| 8-A12B/A | Filing | Aug 19, 2014 | — |
| 11-K | Employee savings plan report | Jun 18, 2014 | Dec 31, 2013 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2014 | — |
| UPLOAD | Letter from the SEC | Dec 2, 2013 | — |
| UPLOAD | Letter from the SEC | Oct 31, 2013 | — |
| CORRESP | Letter to the SEC | Oct 16, 2013 | — |
| CORRESP | Letter to the SEC | Sep 13, 2013 | — |
| CORRESP | Letter to the SEC | Sep 9, 2013 | — |
| UPLOAD | Letter from the SEC | Aug 23, 2013 | — |
| CORRESP | Letter to the SEC | Aug 6, 2013 | — |
| CORRESP | Letter to the SEC | Jul 24, 2013 | — |
| UPLOAD | Letter from the SEC | Jul 11, 2013 | — |
| CORRESP | Letter to the SEC | Jun 17, 2013 | — |
| 11-K | Employee savings plan report | Jun 14, 2013 | Dec 31, 2012 |
| CORRESP | Letter to the SEC | May 13, 2013 | — |
| CORRESP | Letter to the SEC | Apr 17, 2013 | — |
| UPLOAD | Letter from the SEC | Apr 15, 2013 | — |
| 11-K | Employee savings plan report | Jun 14, 2012 | Dec 31, 2011 |
| UPLOAD | Letter from the SEC | Oct 3, 2011 | — |
| CORRESP | Letter to the SEC | Sep 29, 2011 | — |
| CORRESP | Letter to the SEC | Sep 2, 2011 | — |
| UPLOAD | Letter from the SEC | Aug 31, 2011 | — |
| 11-K | Employee savings plan report | Jun 14, 2011 | Dec 31, 2010 |
| NO ACT | Auto-generated paper document | Jan 13, 2011 | Jan 11, 2011 |
Showing 59 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.