# Filing Detail

Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000067716-25-000074
Filing Date
2025-08-07
Accepted
2025-08-07 08:37:29
Documents
89
Period of Report
2025-06-30

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | MDU RESOURCES FORM 10-Q | mdu-20250630.htm iXBRL | 10-Q | 2332177
2 | MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER | a2025q2ex31a.htm | EX-31.A | 9060
3 | MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER | a2025q2ex31b.htm | EX-31.B | 8653
4 | MDU RESOURCES CERTIFICATION OF CEO AND CFO | a2025q2ex32.htm | EX-32 | 5233
| Complete submission text file | 0000067716-25-000074.txt |  | 11212612

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
5 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | mdu-20250630.xsd | EX-101.SCH | 54002
6 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | mdu-20250630_cal.xml | EX-101.CAL | 110834
7 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | mdu-20250630_def.xml | EX-101.DEF | 297978
8 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | mdu-20250630_lab.xml | EX-101.LAB | 723539
9 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | mdu-20250630_pre.xml | EX-101.PRE | 530236
92 | EXTRACTED XBRL INSTANCE DOCUMENT | mdu-20250630_htm.xml | XML | 2296539

Mailing Address 1200 WEST CENTURY AVENUE BISMARCK ND 58503
Business Address 1200 WEST CENTURY AVENUE BISMARCK ND 58503 701-530-1000
MDU RESOURCES GROUP INC (Filer) CIK: 0000067716 (see all company filings)

EIN.: 301133956 | Fiscal Year End: 1231
Type: 10-Q | Act: 34 | File No.: 001-03480 | Film No.: 251191823
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)
(CF Office: 01 Energy & Transportation)