# Filing Detail

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0000067716-23-000036
Filing Date
2023-03-24
Accepted
2023-03-24 10:34:32
Documents
3

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | DEFA14A | a2023proxynotice.htm | DEFA14A | 10564
2 | GRAPHIC | proxynotice_pagex1.jpg | GRAPHIC | 521597
3 | GRAPHIC | proxynotice_pagex2.jpg | GRAPHIC | 450065
| Complete submission text file | 0000067716-23-000036.txt |  | 1349299

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: DEFA14A | Act: 34 | File No.: 001-03480 | Film No.: 23758338
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)