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Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000067716-20-000010
Filing Date
2020-02-21
Accepted
2020-02-21 09:56:31
Documents
171
Period of Report
2019-12-31

Document Format Files

Seq Description Document Type Size
1 10-K a2019form10-k.htm   iXBRL 10-K 6061047
2 MDU RESOURCES CEHI FIFTH AMENDED AND RESTATED CREDIT AGREEMENT 12-19-2019 a2019ex4c.htm EX-4.C 871800
3 MDU RESOURCES MDU AMENDED AND RESTATED CREDIT AGREEMENT 12-19-2019 a2019ex4d.htm EX-4.D 810398
4 MDU RESOURCES DESCRIPTION OF SECURITIES a2019ex4g.htm EX-4.G 26090
5 MDU RESOURCES EXECUTIVE INCENTIVE COMPENSATION PLAN AMENDED 11-13-2019 a2019ex10g.htm EX-10.G 76111
6 MDU RESOURCES LONG-TERM PERFORMANCE INCENTIVE PLAN a2019ex10k.htm EX-10.K 71226
7 MDU RESOURCES 401 K RETIREMENT PLAN AMENDMENT 10-15-2019 a2019ex10y.htm EX-10.Y 11794
8 MDU RESOURCES SUBSIDIARIES OF MDU RESOURCES a2019ex21.htm EX-21 62249
9 MDU RESOURCES CONSENT OF INDEPENDENT ACCOUNTING FIRM a2019ex23.htm EX-23 2799
10 MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER a2019ex31a.htm EX-31.A 10459
11 MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER a2019ex31b.htm EX-31.B 10449
12 MDU RESOURCES CERTIFICATION OF CEO AND CFO a2019ex32.htm EX-32 6955
13 MDU RESOURCES MINE SAFETY DISCLOSURES a2019ex95.htm EX-95 238838
  Complete submission text file 0000067716-20-000010.txt   28982977

Data Files

Seq Description Document Type Size
14 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT mdu-20191231.xsd EX-101.SCH 118830
15 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT mdu-20191231_cal.xml EX-101.CAL 155933
16 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT mdu-20191231_def.xml EX-101.DEF 988266
17 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT mdu-20191231_lab.xml EX-101.LAB 1730907
18 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT mdu-20191231_pre.xml EX-101.PRE 1185976
130 EXTRACTED XBRL INSTANCE DOCUMENT a2019form10-k_htm.xml XML 5937379
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.: 20637656
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)