MDU Resources Group, Inc. (MDU)
NYSE: MDU · Mining & Quarrying of Nonmetallic Minerals (No Fuels) · Bismarck, ND · filing with the SEC since 1994
Grade4.5
◀ Past 4.3● Present 5.2▶ Future 4.0
Filings
280 filings since 2017 beside 315 insider forms · Large accelerated filer · read from EDGAR on Nov 13, 2026Due nextLarge accelerated filer
10-K
Annual report for the fiscal year ending Dec 31, 2026Large accelerated filers have 60 days after the fiscal year ends.
by Mar 1, 2027
10-Q
Quarterly report for the quarter ending Mar 31, 2027Large accelerated filers have 40 days after the quarter ends; quarter ends are taken to the month end.
by May 10, 2027
A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files. Last time, the results release (8-K item 2.02) came 36 days after the quarter ended. The proxy statement was last filed Apr 1, 2026.
Filings a yearinsider forms included
6460526575655743
2026 counts to Nov 13, 2026.
Officer or director change (8-K item 5.02): 9 times in the last 36 months, the newest May 13, 2026.
Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.
FiledFormWhat it is, in plain wordsPeriodAsk
Nov 5, 2026
8-K items 2.02, 7.01, 9.01
Results released; Investor disclosure (Regulation FD) · Current report
Aug 6, 2026
8-K items 2.02, 7.01, 9.01
Results released; Investor disclosure (Regulation FD) · Current report
May 13, 2026
8-K items 5.02, 5.05, 5.07, 9.01
Officer or director change; item 5.05; Shareholder vote · Current report
May 11, 2026
May 7, 2026
8-K items 2.02, 7.01, 9.01
Results released; Investor disclosure (Regulation FD) · Current report
Feb 5, 2026
8-K items 2.02, 7.01, 9.01
Results released; Investor disclosure (Regulation FD) · Current report
Jan 16, 2026
8-K items 1.01, 2.03, 9.01
Major agreement signed; New debt or obligation taken on · Current report
Jan 15, 2026
Dec 29, 2025
8-K items 1.01, 8.01, 9.01
Major agreement signed; Other event · Current report
Dec 23, 2025
Dec 12, 2025
8-K items 1.01, 2.01, 9.01
Major agreement signed; Purchase or sale of a business completed · Current report
Dec 11, 2025
Dec 5, 2025
8-K items 1.01, 8.01, 9.01
Major agreement signed; Other event · Current report
Dec 3, 2025
Nov 6, 2025
8-K items 2.02, 7.01, 9.01
Results released; Investor disclosure (Regulation FD) · Current report
Aug 13, 2025
8-K items 5.02, 7.01, 9.01
Officer or director change; Investor disclosure (Regulation FD) · Current report
Aug 12, 2025
Aug 7, 2025
8-K items 2.02, 7.01, 9.01
Results released; Investor disclosure (Regulation FD) · Current report
40 of 280 shown
Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.