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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 CIK#: 0000067716 (see all company filings)

SIC: 1400 - MINING, QUARRYING OF NONMETALLIC MINERALS (NO FUELS)
State location: ND | Fiscal Year End: 1231
(CF Office: 01 Energy & Transportation)
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Items 1 - 40  0000067716 Filings RSS Feed
Filings Format Description Filing Date File/Film Number
ARS  Documents Annual Report to Security Holders
Acc-no: 0000067716-24-000044 (34 Act)  Size: 34 MB
2024-03-29 001-03480
24802397
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0000067716-24-000043 (34 Act)  Size: 1 MB
2024-03-29 001-03480
24802362
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0000067716-24-000042 (34 Act)  Size: 30 MB
2024-03-29 001-03480
24802351
SC 13D/A  Documents [Amend] General statement of acquisition of beneficial ownership
Acc-no: 0001011438-24-000285 (34 Act)  Size: 50 KB
2024-03-18 005-35797
24759912
8-K  Documents   Interactive Data Current report, items 1.01 and 9.01
Acc-no: 0000067716-24-000026 (34 Act)  Size: 352 KB
2024-03-18 001-03480
24756977
8-K  Documents   Interactive Data Current report, items 7.01 and 9.01
Acc-no: 0000067716-24-000022 (34 Act)  Size: 260 KB
2024-03-13 001-03480
24744658
S-8  Documents Securities to be offered to employees in employee benefit plans
Acc-no: 0001104659-24-027036 (33 Act)  Size: 95 KB
2024-02-23 333-277317
24671497
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0000067716-24-000017 (34 Act)  Size: 33 MB
2024-02-22 001-03480
24666265
8-K  Documents   Interactive Data Current report, items 5.02 and 9.01
Acc-no: 0000067716-24-000013 (34 Act)  Size: 464 KB
2024-02-21 001-03480
24659079
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001104659-24-020081 (34 Act)  Size: 13 KB
2024-02-13 005-35797
24627117
8-K  Documents   Interactive Data Current report, items 2.02, 7.01, and 9.01
Acc-no: 0000067716-24-000009 (34 Act)  Size: 1 MB
2024-02-08 001-03480
24606973
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001086364-24-002712 (34 Act)  Size: 13 KB
2024-01-24 005-35797
24557847
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0000093751-24-000088 (34 Act)  Size: 8 KB
2024-01-23 005-35797
24550798
8-K  Documents   Interactive Data Current report, items 7.01 and 9.01
Acc-no: 0000067716-23-000119 (34 Act)  Size: 271 KB
2023-11-21 001-03480
231428705
8-K  Documents   Interactive Data Current report, items 5.02 and 9.01
Acc-no: 0000067716-23-000116 (34 Act)  Size: 252 KB
2023-11-17 001-03480
231416518
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0000067716-23-000112 (34 Act)  Size: 13 MB
2023-11-02 001-03480
231373167
8-K  Documents   Interactive Data Current report, items 7.01 and 9.01
Acc-no: 0000067716-23-000109 (34 Act)  Size: 309 KB
2023-11-02 001-03480
231370271
8-K  Documents   Interactive Data Current report, items 2.02, 7.01, and 9.01
Acc-no: 0000067716-23-000108 (34 Act)  Size: 1 MB
2023-11-02 001-03480
231370266
8-K  Documents   Interactive Data Current report, items 5.02, 7.01, and 9.01
Acc-no: 0000067716-23-000102 (34 Act)  Size: 317 KB
2023-08-17 001-03480
231182171
8-K  Documents   Interactive Data Current report, items 1.02 and 9.01
Acc-no: 0000067716-23-000099 (34 Act)  Size: 182 KB
2023-08-10 001-03480
231160203
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0000067716-23-000096 (34 Act)  Size: 13 MB
2023-08-03 001-03480
231139769
8-K  Documents   Interactive Data Current report, items 8.01 and 9.01
Acc-no: 0000067716-23-000092 (34 Act)  Size: 311 KB
2023-08-03 001-03480
231138251
8-K  Documents   Interactive Data Current report, items 2.02, 7.01, and 9.01
Acc-no: 0000067716-23-000091 (34 Act)  Size: 1 MB
2023-08-03 001-03480
231138241
8-K  Documents   Interactive Data Current report, items 7.01 and 9.01
Acc-no: 0000067716-23-000085 (34 Act)  Size: 331 KB
2023-07-10 001-03480
231080498
11-K  Documents Annual report of employee stock purchase, savings and similar plans
Acc-no: 0000067716-23-000080 (34 Act)  Size: 219 KB
2023-06-21 001-03480
231029433
8-K/A  Documents   Interactive Data [Amend] Current report, item 9.01
Acc-no: 0000067716-23-000077 (34 Act)  Size: 625 KB
2023-06-07 001-03480
23997223
8-K  Documents   Interactive Data Current report, items 1.01, 1.02, 2.01, 2.03, 5.02, 7.01, 8.01, and 9.01
Acc-no: 0001140361-23-027660 (34 Act)  Size: 4 MB
2023-06-01 001-03480
23983141
SD  Documents Specialized disclosure report
Acc-no: 0000067716-23-000072 (34 Act)  Size: 348 KB
2023-05-24 001-03480
23953775
SC 13D/A  Documents [Amend] General statement of acquisition of beneficial ownership
Acc-no: 0001011438-23-000395 (34 Act)  Size: 52 KB
2023-05-12 005-35797
23916141
8-K  Documents   Interactive Data Current report, items 7.01 and 9.01
Acc-no: 0001140361-23-024278 (34 Act)  Size: 6 MB
2023-05-12 001-03480
23913446
8-K  Documents   Interactive Data Current report, items 5.02 and 5.07
Acc-no: 0000067716-23-000069 (34 Act)  Size: 236 KB
2023-05-11 001-03480
23911684
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0000067716-23-000066 (34 Act)  Size: 11 MB
2023-05-04 001-03480
23886737
8-K  Documents   Interactive Data Current report, items 8.01 and 9.01
Acc-no: 0000067716-23-000064 (34 Act)  Size: 330 KB
2023-05-04 001-03480
23886707
8-K  Documents   Interactive Data Current report, items 2.02, 7.01, and 9.01
Acc-no: 0000067716-23-000063 (34 Act)  Size: 1 MB
2023-05-04 001-03480
23886689
8-K  Documents   Interactive Data Current report, items 8.01 and 9.01
Acc-no: 0000067716-23-000062 (34 Act)  Size: 345 KB
2023-05-04 001-03480
23886680
8-K  Documents   Interactive Data Current report, items 8.01 and 9.01
Acc-no: 0000067716-23-000051 (34 Act)  Size: 344 KB
2023-04-25 001-03480
23845433
SC 13D/A  Documents [Amend] General statement of acquisition of beneficial ownership
Acc-no: 0001193125-23-113109 (34 Act)  Size: 51 KB
2023-04-24 005-35797
23841062
8-K  Documents   Interactive Data Current report, items 7.01 and 9.01
Acc-no: 0000067716-23-000048 (34 Act)  Size: 319 KB
2023-04-11 001-03480
23813801
8-K  Documents   Interactive Data Current report, items 7.01 and 9.01
Acc-no: 0000067716-23-000044 (34 Act)  Size: 316 KB
2023-04-10 001-03480
23809710
8-K  Documents   Interactive Data Current report, items 5.02, 7.01, and 9.01
Acc-no: 0000067716-23-000041 (34 Act)  Size: 324 KB
2023-04-10 001-03480
23809346