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 |
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 8, 2026 | — |
| 4 | Insider transaction | Oct 1, 2026 | Sep 30, 2026 |
| 4 | Insider transaction | Oct 1, 2026 | Sep 30, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 12, 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 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 14, 2026 | — |
| 4 | Insider transaction | Jul 1, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jul 1, 2026 | Jun 30, 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 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 13, 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 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 30, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 9, 2026 | — |
| 4 | Insider transaction | Apr 1, 2026 | Mar 31, 2026 |
| 4 | Insider transaction | Apr 1, 2026 | Mar 31, 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 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 10-K | Annual report | Feb 20, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 13, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 11, 2026 | — |
| 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 |
| 4 | Insider transaction | Jan 2, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Jan 2, 2026 | Dec 31, 2025 |
| 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 |
| 4 | Insider transaction | Nov 14, 2025 | Nov 13, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Nov 13, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Nov 13, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Nov 13, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Nov 13, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Nov 13, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Nov 13, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Nov 13, 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 |
| 4 | Insider transaction | Oct 1, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Oct 1, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Sep 9, 2025 | Sep 8, 2025 |
| 4 | Insider transaction | Aug 19, 2025 | Aug 19, 2025 |
| 3 | Initial insider ownership | Aug 14, 2025 | Aug 12, 2025 |
| 3 | Initial insider ownership | Aug 14, 2025 | Aug 12, 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 |
| 4 | Insider transaction | Jul 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 30, 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 | — |
| 3 | Initial insider ownership | May 19, 2025 | May 13, 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 |
| 4 | Insider transaction | Apr 1, 2025 | Mar 31, 2025 |
| 4 | Insider transaction | Apr 1, 2025 | Mar 31, 2025 |
| 10-K | Annual report | Feb 20, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Feb 14, 2025 | Feb 12, 2025 |
| 4 | Insider transaction | Feb 14, 2025 | Feb 12, 2025 |
| 4 | Insider transaction | Feb 14, 2025 | Feb 12, 2025 |
| 4 | Insider transaction | Feb 14, 2025 | Feb 12, 2025 |
| 4 | Insider transaction | Feb 14, 2025 | Feb 12, 2025 |
| 4 | Insider transaction | Feb 14, 2025 | Feb 12, 2025 |
| 4 | Insider transaction | Feb 14, 2025 | Feb 12, 2025 |
| 4 | Insider transaction | Feb 14, 2025 | Feb 12, 2025 |
| 8-K |
Current report
Material agreement, Bylaw or fiscal year change, Regulation FD disclosure
|
Feb 14, 2025 | Feb 14, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 10, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 6, 2025 | Feb 6, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 30, 2025 | — |
| 3 | Initial insider ownership | Jan 14, 2025 | Jan 13, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 21, 2024 | Nov 21, 2024 |
| 4 | Insider transaction | Nov 19, 2024 | Nov 15, 2024 |
| 4 | Insider transaction | Nov 19, 2024 | Nov 15, 2024 |
| 4 | Insider transaction | Nov 19, 2024 | Nov 15, 2024 |
| 4 | Insider transaction | Nov 19, 2024 | Nov 15, 2024 |
| 4 | Insider transaction | Nov 19, 2024 | Nov 15, 2024 |
| 4 | Insider transaction | Nov 19, 2024 | Nov 15, 2024 |
| 3 | Initial insider ownership | Nov 15, 2024 | Nov 15, 2024 |
| 8-K |
Current report
Officer or director change
|
Nov 14, 2024 | Nov 14, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 7, 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 |
| 4 | Insider transaction | Nov 1, 2024 | Oct 31, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 1, 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 |
| 4 | Insider transaction | Oct 31, 2024 | Oct 31, 2024 |
| 3 | Initial insider ownership | Oct 17, 2024 | Oct 17, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 17, 2024 | Oct 17, 2024 |
| 3 | Initial insider ownership | Oct 9, 2024 | Oct 7, 2024 |
| 8-K |
Current report
Other events
|
Oct 2, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Sep 30, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Sep 3, 2024 | Sep 3, 2024 |
| 3 | Initial insider ownership | Aug 21, 2024 | Aug 15, 2024 |
| 3 | Initial insider ownership | Aug 21, 2024 | Aug 15, 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 |
| 4 | Insider transaction | Jun 28, 2024 | Jun 28, 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 |
| 3 | Initial insider ownership | May 16, 2024 | May 14, 2024 |
| 4 | Insider transaction | May 8, 2024 | May 7, 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 | — |
| 4 | Insider transaction | Apr 1, 2024 | Mar 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 |
| SC 13D/A | Amended ownership over 5% (active) | Mar 18, 2024 | — |
| 8-K |
Current report
Material agreement
|
Mar 18, 2024 | Mar 14, 2024 |
| 4 | Insider transaction | Mar 13, 2024 | Mar 12, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 13, 2024 | Mar 13, 2024 |
| 4 | Insider transaction | Feb 26, 2024 | Feb 22, 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 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Jan 5, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 8, 2024 | Feb 8, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 24, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 23, 2024 | — |
| 3 | Initial insider ownership | Jan 9, 2024 | Jan 6, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 21, 2023 | Nov 21, 2023 |
| 4 | Insider transaction | Nov 17, 2023 | Nov 15, 2023 |
| 4 | Insider transaction | Nov 17, 2023 | Nov 15, 2023 |
| 4 | Insider transaction | Nov 17, 2023 | Nov 15, 2023 |
| 4 | Insider transaction | Nov 17, 2023 | Nov 15, 2023 |
| 4 | Insider transaction | Nov 17, 2023 | Nov 15, 2023 |
| 4 | Insider transaction | Nov 17, 2023 | Nov 15, 2023 |
| 4 | Insider transaction | Nov 17, 2023 | Nov 16, 2023 |
| 3 | Initial insider ownership | Nov 17, 2023 | Nov 16, 2023 |
| 8-K |
Current report
Officer or director change
|
Nov 17, 2023 | Nov 16, 2023 |
| 4 | Insider transaction | Nov 13, 2023 | Nov 10, 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 |
| 4 | Insider transaction | Jul 12, 2023 | Jul 11, 2023 |
| 4 | Insider transaction | Jul 12, 2023 | Jul 11, 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 |
| 4 | Insider transaction | Jun 2, 2023 | May 31, 2023 |
| 3 | Initial insider ownership | Jun 1, 2023 | Jun 1, 2023 |
| 4 | Insider transaction | Jun 1, 2023 | May 31, 2023 |
| 4 | Insider transaction | Jun 1, 2023 | May 31, 2023 |
| 4 | Insider transaction | Jun 1, 2023 | May 31, 2023 |
| 4 | Insider transaction | Jun 1, 2023 | May 31, 2023 |
| 4 | Insider transaction | Jun 1, 2023 | May 31, 2023 |
| 4 | Insider transaction | Jun 1, 2023 | May 31, 2023 |
| 4 | Insider transaction | Jun 1, 2023 | May 31, 2023 |
| 3 | Initial insider ownership | Jun 1, 2023 | Jun 1, 2023 |
| 4 | Insider transaction | Jun 1, 2023 | May 31, 2023 |
| 4 | Insider transaction | Jun 1, 2023 | May 31, 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 |
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.