← All companies
MDU RESOURCES GROUP INC
MDU - CIK 0000067716
Market cap$4.44 B
Rank#1514
SEC filings1,787
MDU RESOURCES GROUP INC has filed 1,787 documents with the SEC 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.