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 |
|---|---|---|---|
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 5, 2026 | Nov 5, 2026 |
| S-8 | Employee stock plan registration | Aug 6, 2026 | — |
| S-8 | Employee stock plan registration | Aug 6, 2026 | — |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 6, 2026 | Aug 6, 2026 |
| 11-K | Employee savings plan report | Jun 18, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 13, 2026 | May 11, 2026 |
| 10-Q | Quarterly report | May 7, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 7, 2026 | May 7, 2026 |
| ARS | Annual report to shareholders | Apr 1, 2026 | Mar 31, 2026 |
| DEFA14A | Additional proxy material | Apr 1, 2026 | — |
| DEF 14A | Proxy statement | Apr 1, 2026 | May 11, 2026 |
| 10-K | Annual report | Feb 20, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 5, 2026 | Feb 5, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Jan 16, 2026 | Jan 15, 2026 |
| 8-K |
Current report
Material agreement, Other events
|
Dec 29, 2025 | Dec 23, 2025 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets
|
Dec 12, 2025 | Dec 11, 2025 |
| 8-K |
Current report
Material agreement, Other events
|
Dec 5, 2025 | Dec 3, 2025 |
| 424B5 | Prospectus supplement | Dec 5, 2025 | — |
| 424B5 | Prospectus supplement | Dec 3, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 20, 2025 | Nov 20, 2025 |
| 10-Q | Quarterly report | Nov 10, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 6, 2025 | Nov 6, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Aug 13, 2025 | Aug 12, 2025 |
| 8-K |
Current report
Material agreement
|
Aug 7, 2025 | Aug 7, 2025 |
| 424B5 | Prospectus supplement | Aug 7, 2025 | — |
| S-3ASR | Automatic shelf registration | Aug 7, 2025 | — |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 7, 2025 | Aug 7, 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 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 15, 2025 | May 13, 2025 |
| 10-Q | Quarterly report | May 8, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 8, 2025 | May 8, 2025 |
| ARS | Annual report to shareholders | Apr 3, 2025 | Mar 27, 2025 |
| DEFA14A | Additional proxy material | Apr 3, 2025 | — |
| DEF 14A | Proxy statement | Apr 3, 2025 | May 13, 2025 |
| 10-K | Annual report | Feb 20, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Material agreement, Bylaw or fiscal year change, Regulation FD disclosure
|
Feb 14, 2025 | Feb 14, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 6, 2025 | Feb 6, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 21, 2024 | Nov 21, 2024 |
| 8-K |
Current report
Officer or director change
|
Nov 14, 2024 | Nov 14, 2024 |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 7, 2024 | Nov 7, 2024 |
| 8-K | Current report | Nov 6, 2024 | Oct 31, 2024 |
| 8-K |
Current report
Material agreement, Agreement ended, Acquisition or sale of assets, Officer or director change, Regulation FD disclosure
|
Nov 1, 2024 | Oct 31, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 17, 2024 | Oct 17, 2024 |
| 8-K |
Current report
Other events
|
Oct 2, 2024 | Oct 1, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Sep 3, 2024 | Sep 3, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Aug 15, 2024 | Aug 15, 2024 |
| 10-Q | Quarterly report | Aug 8, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 8, 2024 | Aug 8, 2024 |
| 8-K |
Current report
Other events
|
Jul 18, 2024 | Jul 18, 2024 |
| 11-K | Employee savings plan report | Jun 26, 2024 | Dec 31, 2023 |
| SD | Specialized disclosure (conflict minerals) | May 22, 2024 | — |
| 8-K |
Current report
Shareholder vote results
|
May 20, 2024 | May 14, 2024 |
| 10-Q | Quarterly report | May 2, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 2, 2024 | May 2, 2024 |
| DEFA14A | Additional proxy material | Apr 29, 2024 | — |
| ARS | Annual report to shareholders | Mar 29, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Mar 29, 2024 | — |
| DEF 14A | Proxy statement | Mar 29, 2024 | May 14, 2024 |
| 8-K |
Current report
Material agreement
|
Mar 18, 2024 | Mar 14, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 13, 2024 | Mar 13, 2024 |
| S-8 | Employee stock plan registration | Feb 23, 2024 | — |
| 10-K | Annual report | Feb 22, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Officer or director change
|
Feb 21, 2024 | Feb 15, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 8, 2024 | Feb 8, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 21, 2023 | Nov 21, 2023 |
| 8-K |
Current report
Officer or director change
|
Nov 17, 2023 | Nov 16, 2023 |
| 10-Q | Quarterly report | Nov 2, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 2, 2023 | Nov 1, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 2, 2023 | Nov 2, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Aug 17, 2023 | Aug 17, 2023 |
| 8-K |
Current report
Agreement ended
|
Aug 10, 2023 | Aug 10, 2023 |
| 10-Q | Quarterly report | Aug 3, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Other events
|
Aug 3, 2023 | Aug 2, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 3, 2023 | Aug 3, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 10, 2023 | Jul 10, 2023 |
| 11-K | Employee savings plan report | Jun 21, 2023 | Dec 31, 2022 |
| 8-K/A | Amended current report | Jun 7, 2023 | May 30, 2023 |
| 8-K |
Current report
Material agreement, Agreement ended, Acquisition or sale of assets, New debt, Officer or director change, Regulation FD disclosure, Other events
|
Jun 1, 2023 | May 30, 2023 |
| SD | Specialized disclosure (conflict minerals) | May 24, 2023 | — |
| 8-K |
Current report
Regulation FD disclosure
|
May 12, 2023 | May 10, 2023 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 11, 2023 | May 9, 2023 |
| 10-Q | Quarterly report | May 4, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Other events
|
May 4, 2023 | May 3, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 4, 2023 | May 4, 2023 |
| 8-K |
Current report
Other events
|
May 4, 2023 | May 3, 2023 |
| 8-K |
Current report
Other events
|
Apr 25, 2023 | Apr 25, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 11, 2023 | Apr 11, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 10, 2023 | Apr 10, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Apr 10, 2023 | Apr 7, 2023 |
| ARS | Annual report to shareholders | Mar 24, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Mar 24, 2023 | — |
| DEF 14A | Proxy statement | Mar 24, 2023 | — |
| 10-K | Annual report | Feb 24, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Officer or director change
|
Feb 17, 2023 | Feb 16, 2023 |
| 8-K |
Current report
Other events
|
Feb 16, 2023 | Feb 16, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 9, 2023 | Feb 9, 2023 |
| 8-K |
Current report
Material agreement, Officer or director change, Other events
|
Jan 24, 2023 | Jan 24, 2023 |
| 8-K |
Current report
Other events
|
Dec 15, 2022 | Dec 14, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 22, 2022 | Nov 22, 2022 |
| 8-K |
Current report
Officer or director change
|
Nov 18, 2022 | Nov 17, 2022 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Nov 17, 2022 | Nov 17, 2022 |
| 10-Q | Quarterly report | Nov 3, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 3, 2022 | Nov 3, 2022 |
| 10-Q | Quarterly report | Aug 5, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 4, 2022 | Aug 4, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 4, 2022 | Aug 4, 2022 |
| 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 | — |
| 8-K |
Current report
Shareholder vote results
|
May 12, 2022 | May 10, 2022 |
| 10-Q | Quarterly report | May 5, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 4, 2022 | May 4, 2022 |
| CORRESP | Letter to the SEC | Apr 26, 2022 | — |
| UPLOAD | Letter from the SEC | Apr 14, 2022 | — |
| DEFA14A | Additional proxy material | Mar 25, 2022 | — |
| DEF 14A | Proxy statement | Mar 25, 2022 | May 10, 2022 |
| 10-K | Annual report | Feb 23, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 9, 2022 | Feb 9, 2022 |
| 8-K | Current report | Jan 10, 2022 | Jan 6, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 23, 2021 | Nov 23, 2021 |
| 10-Q | Quarterly report | Nov 4, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 3, 2021 | Nov 3, 2021 |
| 8-K | Current report | Aug 16, 2021 | Aug 10, 2021 |
| 10-Q | Quarterly report | Aug 5, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 4, 2021 | Aug 4, 2021 |
| 11-K | Employee savings plan report | Jun 22, 2021 | Dec 31, 2020 |
| SD | Specialized disclosure (conflict minerals) | May 27, 2021 | — |
| 8-K |
Current report
Shareholder vote results
|
May 12, 2021 | May 11, 2021 |
| 10-Q | Quarterly report | May 6, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 6, 2021 | May 5, 2021 |
| DEFA14A | Additional proxy material | Mar 26, 2021 | — |
| DEF 14A | Proxy statement | Mar 26, 2021 | May 11, 2021 |
| 8-K |
Current report
Officer or director change
|
Mar 12, 2021 | Mar 9, 2021 |
| 10-K | Annual report | Feb 19, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 3, 2021 | Feb 3, 2021 |
| 8-K |
Current report
Officer or director change
|
Dec 18, 2020 | Dec 15, 2020 |
| 8-K |
Current report
Regulation FD disclosure
|
Dec 14, 2020 | Dec 14, 2020 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 19, 2020 | Nov 19, 2020 |
| 8-K |
Current report
Officer or director change
|
Nov 12, 2020 | Nov 12, 2020 |
| 10-Q | Quarterly report | Nov 5, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 4, 2020 | Nov 4, 2020 |
| 8-K | Current report | Oct 8, 2020 | Sep 16, 2020 |
| S-3ASR | Automatic shelf registration | Aug 14, 2020 | — |
| 10-Q | Quarterly report | Aug 6, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 4, 2020 | Aug 4, 2020 |
| 11-K | Employee savings plan report | Jun 12, 2020 | Dec 31, 2019 |
| SD | Specialized disclosure (conflict minerals) | May 26, 2020 | — |
| 8-K |
Current report
Shareholder vote results
|
May 13, 2020 | May 12, 2020 |
| 10-Q | Quarterly report | May 8, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 7, 2020 | May 7, 2020 |
| DEFA14A | Additional proxy material | Mar 27, 2020 | — |
| DEF 14A | Proxy statement | Mar 27, 2020 | May 12, 2020 |
| 10-K | Annual report | Feb 21, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 4, 2020 | Feb 4, 2020 |
| 8-K |
Current report
Regulation FD disclosure
|
Dec 9, 2019 | Dec 9, 2019 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 18, 2019 | Nov 18, 2019 |
| S-8 | Employee stock plan registration | Nov 18, 2019 | — |
| 10-Q | Quarterly report | Nov 1, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Oct 30, 2019 | Oct 29, 2019 |
| 8-K | Current report | Oct 4, 2019 | Oct 1, 2019 |
| 10-Q | Quarterly report | Aug 2, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jul 30, 2019 | Jul 30, 2019 |
| 11-K | Employee savings plan report | Jun 14, 2019 | Dec 31, 2018 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2019 | — |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
May 8, 2019 | May 7, 2019 |
| 10-Q | Quarterly report | May 3, 2019 | Mar 31, 2019 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Apr 30, 2019 | Apr 30, 2019 |
| 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 |
| 8-K |
Current report
Material agreement
|
Feb 22, 2019 | Feb 22, 2019 |
| 424B5 | Prospectus supplement | Feb 22, 2019 | — |
| 10-K | Annual report | Feb 22, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 19, 2019 | Feb 19, 2019 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Feb 15, 2019 | Feb 14, 2019 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 6, 2019 | Feb 5, 2019 |
| 15-12B | Deregistration | Jan 14, 2019 | — |
| 25-NSE | Delisting notice | Jan 2, 2019 | — |
| S-8 POS | Filing | Jan 2, 2019 | — |
| S-8 POS | Filing | Jan 2, 2019 | — |
| S-8 POS | Filing | Jan 2, 2019 | — |
| POSASR | Filing | Jan 2, 2019 | — |
| 8-K12B | Filing | Jan 2, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Material agreement, Listing notice, Change to shareholder rights, Officer or director change, Bylaw or fiscal year change
|
Jan 2, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Regulation FD disclosure
|
Dec 18, 2018 | Dec 18, 2018 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 21, 2018 | Nov 20, 2018 |
| 8-K |
Current report
Officer or director change
|
Nov 15, 2018 | Nov 15, 2018 |
| 10-Q | Quarterly report | Nov 2, 2018 | Sep 30, 2018 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 1, 2018 | Oct 31, 2018 |
| 8-K |
Current report
Officer or director change
|
Aug 16, 2018 | Aug 16, 2018 |
| 10-Q | Quarterly report | Aug 3, 2018 | Jun 30, 2018 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jul 31, 2018 | Jul 31, 2018 |
| 11-K | Employee savings plan report | Jun 15, 2018 | Dec 31, 2017 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2018 | — |
Showing 200 filings, the most recent 200. 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.