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 |
|---|---|---|---|
| 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 | — |
| 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 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 13, 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 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 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 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 13, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 11, 2026 | — |
| 4 | Insider transaction | Jan 2, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Jan 2, 2026 | Dec 31, 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 |
| 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 |
| 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 |
| 3 | Initial insider ownership | May 19, 2025 | May 13, 2025 |
| 4 | Insider transaction | Apr 1, 2025 | Mar 31, 2025 |
| 4 | Insider transaction | Apr 1, 2025 | Mar 31, 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 |
| 4 | Insider transaction | Feb 14, 2025 | Feb 12, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 10, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 30, 2025 | — |
| 3 | Initial insider ownership | Jan 14, 2025 | Jan 13, 2025 |
| 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 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 7, 2024 | — |
| 4 | Insider transaction | Nov 1, 2024 | Oct 31, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 1, 2024 | — |
| 4 | Insider transaction | Oct 31, 2024 | Oct 31, 2024 |
| 3 | Initial insider ownership | Oct 17, 2024 | Oct 17, 2024 |
| 3 | Initial insider ownership | Oct 9, 2024 | Oct 7, 2024 |
| 4 | Insider transaction | Sep 30, 2024 | Sep 30, 2024 |
| 3 | Initial insider ownership | Aug 21, 2024 | Aug 15, 2024 |
| 3 | Initial insider ownership | Aug 21, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Jun 28, 2024 | Jun 28, 2024 |
| 3 | Initial insider ownership | May 16, 2024 | May 14, 2024 |
| 4 | Insider transaction | May 8, 2024 | May 7, 2024 |
| 4 | Insider transaction | Apr 1, 2024 | Mar 29, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Mar 18, 2024 | — |
| 4 | Insider transaction | Mar 13, 2024 | Mar 12, 2024 |
| 4 | Insider transaction | Feb 26, 2024 | Feb 22, 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 | — |
| 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 |
| 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 |
| 4 | Insider transaction | Nov 13, 2023 | Nov 10, 2023 |
| 4 | Insider transaction | Jul 12, 2023 | Jul 11, 2023 |
| 4 | Insider transaction | Jul 12, 2023 | Jul 11, 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 |
| 3 | Initial insider ownership | May 12, 2023 | May 9, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | May 12, 2023 | — |
| 3 | Initial insider ownership | May 10, 2023 | May 10, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Apr 24, 2023 | — |
| 3 | Initial insider ownership | Mar 3, 2023 | Mar 1, 2023 |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jan 24, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Jan 24, 2023 | — |
| 4 | Insider transaction | Dec 30, 2022 | Dec 30, 2022 |
| 4 | Insider transaction | Nov 22, 2022 | Nov 21, 2022 |
| 4 | Insider transaction | Nov 22, 2022 | Nov 21, 2022 |
| 4 | Insider transaction | Nov 22, 2022 | Nov 21, 2022 |
| 4 | Insider transaction | Nov 22, 2022 | Nov 21, 2022 |
| 4 | Insider transaction | Nov 22, 2022 | Nov 21, 2022 |
| 4 | Insider transaction | Nov 22, 2022 | Nov 21, 2022 |
| 4 | Insider transaction | Nov 22, 2022 | Nov 21, 2022 |
| 4 | Insider transaction | Nov 22, 2022 | Nov 21, 2022 |
| 4 | Insider transaction | Nov 22, 2022 | Nov 21, 2022 |
| 3 | Initial insider ownership | Nov 21, 2022 | Nov 17, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 3, 2022 | — |
| 4 | Insider transaction | Sep 30, 2022 | Sep 30, 2022 |
| 4 | Insider transaction | Aug 25, 2022 | Aug 24, 2022 |
| SC 13D | Ownership over 5% (active) | Aug 8, 2022 | — |
| 4 | Insider transaction | Jun 30, 2022 | Jun 30, 2022 |
| 4 | Insider transaction | Mar 31, 2022 | Mar 31, 2022 |
| 4 | Insider transaction | Feb 28, 2022 | Feb 11, 2021 |
| 4 | Insider transaction | Feb 28, 2022 | Feb 11, 2021 |
| 4 | Insider transaction | Feb 28, 2022 | Feb 11, 2021 |
| 4 | Insider transaction | Feb 28, 2022 | Feb 11, 2021 |
| 4 | Insider transaction | Feb 28, 2022 | Feb 11, 2021 |
| 4 | Insider transaction | Feb 28, 2022 | Feb 11, 2021 |
| 4 | Insider transaction | Feb 28, 2022 | Feb 11, 2021 |
| 4 | Insider transaction | Feb 28, 2022 | Feb 11, 2021 |
| 4 | Insider transaction | Feb 28, 2022 | Feb 11, 2021 |
| 4 | Insider transaction | Feb 28, 2022 | Feb 11, 2021 |
| 4 | Insider transaction | Feb 22, 2022 | Feb 17, 2022 |
| 4 | Insider transaction | Feb 22, 2022 | Feb 17, 2022 |
| 4 | Insider transaction | Feb 22, 2022 | Feb 17, 2022 |
| 4 | Insider transaction | Feb 22, 2022 | Feb 17, 2022 |
| 4 | Insider transaction | Feb 22, 2022 | Feb 17, 2022 |
| 4 | Insider transaction | Feb 22, 2022 | Feb 17, 2022 |
| 4 | Insider transaction | Feb 22, 2022 | Feb 17, 2022 |
| 4 | Insider transaction | Feb 22, 2022 | Feb 17, 2022 |
| 4 | Insider transaction | Feb 22, 2022 | Feb 17, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 1, 2022 | — |
| 5 | Annual insider ownership | Jan 13, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Jan 3, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Jan 3, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Nov 17, 2021 | Nov 16, 2021 |
| 4 | Insider transaction | Nov 17, 2021 | Nov 16, 2021 |
| 4 | Insider transaction | Nov 17, 2021 | Nov 16, 2021 |
| 4 | Insider transaction | Nov 17, 2021 | Nov 16, 2021 |
| 4 | Insider transaction | Nov 17, 2021 | Nov 16, 2021 |
| 4 | Insider transaction | Nov 17, 2021 | Nov 16, 2021 |
| 4 | Insider transaction | Nov 17, 2021 | Nov 16, 2021 |
| 4 | Insider transaction | Nov 17, 2021 | Nov 16, 2021 |
| 4 | Insider transaction | Oct 1, 2021 | Sep 30, 2021 |
| 4 | Insider transaction | Sep 30, 2021 | Sep 30, 2021 |
| 4 | Insider transaction | Jul 1, 2021 | Jun 30, 2021 |
| 4 | Insider transaction | Jun 30, 2021 | Jun 30, 2021 |
| 4 | Insider transaction | Jun 15, 2021 | Jun 14, 2021 |
| 4 | Insider transaction | Jun 14, 2021 | Jun 11, 2021 |
| 4 | Insider transaction | Jun 11, 2021 | Jun 9, 2021 |
| 4 | Insider transaction | Jun 9, 2021 | Jun 8, 2021 |
| 4 | Insider transaction | Jun 9, 2021 | Jun 8, 2021 |
| 4 | Insider transaction | Jun 8, 2021 | Jun 7, 2021 |
| 4 | Insider transaction | Jun 7, 2021 | Jun 4, 2021 |
| 3 | Initial insider ownership | May 17, 2021 | May 11, 2021 |
| 4 | Insider transaction | Apr 1, 2021 | Mar 31, 2021 |
| 4 | Insider transaction | Apr 1, 2021 | Mar 31, 2021 |
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.