MDU - Company ID 0000067716
MDU RESOURCES GROUP INC has filed 1,787 public company documents between 1994 and 2026. The most frequent type is insider trade (843 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Type | Filing | Filed | Period covered | Open |
|---|---|---|---|---|
| 424B5 | Prospectus supplement | 7mo ago2025-12-05 | - | View filing |
| 424B5 | Prospectus supplement | 7mo ago2025-12-03 | - | View filing |
| 424B5 | Prospectus supplement | 11mo ago2025-08-07 | - | View filing |
| 424B5 | Prospectus supplement | 7y ago2019-02-22 | - | View filing |
| 424B5 | Prospectus supplement | 13y ago2013-05-20 | - | View filing |
| 424B5 | Prospectus supplement | 19y ago2007-06-28 | - | View filing |
| 424B5 | Prospectus supplement | 19y ago2006-07-27 | - | View filing |
| 424B5 | Prospectus supplement | 22y ago2004-02-05 | - | View filing |
| 424B5 | Prospectus supplement | 22y ago2004-02-03 | - | View filing |
| 424B5 | Prospectus supplement | 22y ago2003-12-18 | - | View filing |
| 424B5 | Prospectus supplement | 22y ago2003-12-16 | - | View filing |
| 424B5 | Prospectus supplement | 23y ago2002-11-21 | - | View filing |
| 424B5 | Prospectus supplement | 23y ago2002-11-20 | - | View filing |
| 424B5 | Prospectus supplement | 28y ago1998-04-22 | - | View filing |
| 424B5 | Prospectus supplement | 28y ago1998-04-03 | - | View filing |
| 424B5 | Prospectus supplement | 28y ago1997-09-15 | - | View filing |