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 |
|---|---|---|---|
| S-8 | Employee stock plan registration | Aug 6, 2026 | — |
| S-8 | Employee stock plan registration | Aug 6, 2026 | — |
| 424B5 | Prospectus supplement | Dec 5, 2025 | — |
| 424B5 | Prospectus supplement | Dec 3, 2025 | — |
| 424B5 | Prospectus supplement | Aug 7, 2025 | — |
| S-3ASR | Automatic shelf registration | Aug 7, 2025 | — |
| S-8 | Employee stock plan registration | Feb 23, 2024 | — |
| S-3ASR | Automatic shelf registration | Aug 14, 2020 | — |
| S-8 | Employee stock plan registration | Nov 18, 2019 | — |
| 424B5 | Prospectus supplement | Feb 22, 2019 | — |
| S-8 POS | Filing | Jan 2, 2019 | — |
| S-8 POS | Filing | Jan 2, 2019 | — |
| S-8 POS | Filing | Jan 2, 2019 | — |
| S-3ASR | Automatic shelf registration | Aug 18, 2017 | — |
| S-8 | Employee stock plan registration | Jul 22, 2016 | — |
| S-8 POS | Filing | Mar 19, 2015 | — |
| S-3ASR | Automatic shelf registration | Nov 13, 2014 | — |
| S-8 | Employee stock plan registration | Aug 26, 2014 | — |
| 424B2 | Prospectus | May 16, 2014 | — |
| S-3ASR | Automatic shelf registration | May 15, 2014 | — |
| 424B5 | Prospectus supplement | May 20, 2013 | — |
| S-8 POS | Filing | Dec 16, 2011 | — |
| S-8 POS | Filing | Dec 16, 2011 | — |
| S-3ASR | Automatic shelf registration | Nov 18, 2011 | — |
| S-3ASR | Automatic shelf registration | May 19, 2011 | — |
Showing 25 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.