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Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000067716-24-000017
Filing Date
2024-02-22
Accepted
2024-02-22 17:28:03
Documents
175
Period of Report
2023-12-31

Document Format Files

Seq Description Document Type Size
1 MDU RESOURCES 2023 FORM 10-K mdu-20231231.htm   iXBRL 10-K 4583310
2 MDU RESOURCES 401 K RETIREMENT PLAN AMENDMENT 5-1-23 a2023ex10ae.htm EX-10.AE 26608
3 MDU RESOURCES 401 K RETIREMENT PLAN AMENDMENT 8-23-23 a2023ex10af.htm EX-10.AF 5895
4 MDU RESOURCES 401 K RETIREMENT PLAN AMENDMENT 1-1-24 a2023ex10ag.htm EX-10.AG 8526
5 MDU RESOURCES SECTION 16 OFFICERS AND DIRECTORS a2023ex10u.htm EX-10.U 22918
6 MDU RESOURCES SUBSIDIARIES OF MDU RESOURCES a2023ex21.htm EX-21 31049
7 MDU RESOURCES CONSENT OF INDEPENDENT ACCOUNTING FIRM a2023ex23.htm EX-23 2118
8 MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER a2023ex31a.htm EX-31.A 8538
9 MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER a2023ex31b.htm EX-31.B 8550
10 MDU RESOURCES CERTIFICATION OF CEO AND CFO a2023ex32.htm EX-32 5725
11 MDU RESOURCES INCENTIVE COMPENSATION RECOVERY POLICY ex97.htm EX-97 41104
17 mdu-20231231_g1.jpg GRAPHIC 302998
18 mdu-20231231_g10.jpg GRAPHIC 427857
19 mdu-20231231_g2.jpg GRAPHIC 340177
20 mdu-20231231_g3.jpg GRAPHIC 594202
21 mdu-20231231_g4.jpg GRAPHIC 419799
22 mdu-20231231_g5.jpg GRAPHIC 341144
23 mdu-20231231_g6.jpg GRAPHIC 138384
24 mdu-20231231_g7.jpg GRAPHIC 524955
25 mdu-20231231_g8.jpg GRAPHIC 574187
26 mdu-20231231_g9.jpg GRAPHIC 576051
  Complete submission text file 0000067716-24-000017.txt   33078294

Data Files

Seq Description Document Type Size
12 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT mdu-20231231.xsd EX-101.SCH 124291
13 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT mdu-20231231_cal.xml EX-101.CAL 182549
14 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT mdu-20231231_def.xml EX-101.DEF 796189
15 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT mdu-20231231_lab.xml EX-101.LAB 1539729
16 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT mdu-20231231_pre.xml EX-101.PRE 1161775
177 EXTRACTED XBRL INSTANCE DOCUMENT mdu-20231231_htm.xml XML 4278342
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)

IRS No.: 301133956 | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-03480 | Film No.: 24666265
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)
(CF Office: 01 Energy & Transportation)