Form SD - Specialized disclosure report:
SEC Accession No. 0000067716-25-000058
Filing Date
2025-05-30
Accepted
2025-05-30 08:51:35
Documents
2

Document Format Files

Seq Description Document Type Size
1 SD formsd2025.htm SD 18083
2 EX-1.01 a2025ex101conflictminerals.htm EX-1.01 391887
  Complete submission text file 0000067716-25-000058.txt   411204
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: SD | Act: 34 | File No.: 001-03480 | Film No.: 251006788
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)
(CF Office: 01 Energy & Transportation)