# Filing Detail

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0000067716-22-000020
Filing Date
2022-03-25
Accepted
2022-03-25 10:35:57
Documents
3

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | DEFA14A | a2022proxynotice.htm | DEFA14A | 10540
2 | GRAPHIC | proxynotice1.jpg | GRAPHIC | 2047449
3 | GRAPHIC | proxynotice2.jpg | GRAPHIC | 1337624
| Complete submission text file | 0000067716-22-000020.txt |  | 4378988

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.: 22768824
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)