| 424B5 |
Open Document
| Data
|
Open Filing |
424B5 |
Dec 5, 2025 |
|
333-289348 |
| 424B5 |
Open Document
|
Open Filing |
424B5 |
Dec 3, 2025 |
|
333-289348 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 8-K CAP EX |
Nov 20, 2025 |
Nov 20, 2025 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Nov 14, 2025 |
Nov 13, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 14, 2025 |
Nov 13, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 14, 2025 |
Nov 13, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 14, 2025 |
Nov 13, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 14, 2025 |
Nov 13, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 14, 2025 |
Nov 13, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 14, 2025 |
Nov 13, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 14, 2025 |
Nov 13, 2025 |
|
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q |
Nov 10, 2025 |
Sep 30, 2025 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 8-K EARNINGS RELEASE |
Nov 6, 2025 |
Nov 6, 2025 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Oct 1, 2025 |
Sep 30, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Oct 1, 2025 |
Sep 30, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Sep 9, 2025 |
Sep 8, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Aug 19, 2025 |
Aug 19, 2025 |
|
| 3 |
Open Document
|
Open Filing |
|
Aug 14, 2025 |
Aug 12, 2025 |
|
| 3 |
Open Document
|
Open Filing |
|
Aug 14, 2025 |
Aug 12, 2025 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Aug 13, 2025 |
Aug 12, 2025 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
FORM 8-K |
Aug 7, 2025 |
Aug 7, 2025 |
001-03480 |
| 424B5 |
Open Document
| Data
|
Open Filing |
424B5 |
Aug 7, 2025 |
|
333-289348 |
| S-3ASR |
Open Document
| Data
|
Open Filing |
S-3ASR |
Aug 7, 2025 |
|
333-289348 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q |
Aug 7, 2025 |
Jun 30, 2025 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 8-K |
Aug 7, 2025 |
Aug 7, 2025 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Jul 16, 2025 |
May 15, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Jul 1, 2025 |
Jun 30, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Jul 1, 2025 |
Jun 30, 2025 |
|
| 11-K/A |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 11-K/A |
Jun 23, 2025 |
Dec 31, 2024 |
001-03480 |
| 11-K |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 11-K |
Jun 18, 2025 |
Dec 31, 2024 |
001-03480 |
| SD |
Open Document
|
Open Filing |
SD |
May 30, 2025 |
|
001-03480 |
| 3 |
Open Document
|
Open Filing |
|
May 19, 2025 |
May 13, 2025 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
May 15, 2025 |
May 13, 2025 |
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q |
May 8, 2025 |
Mar 31, 2025 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 8-K |
May 8, 2025 |
May 8, 2025 |
001-03480 |
| ARS |
Open Document
|
Open Filing |
ARS |
Apr 3, 2025 |
Mar 27, 2025 |
001-03480 |
| DEFA14A |
Open Document
|
Open Filing |
DEFA14A |
Apr 3, 2025 |
|
001-03480 |
| DEF 14A |
Open Document
| Data
|
Open Filing |
DEF 14A |
Apr 3, 2025 |
May 13, 2025 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Apr 1, 2025 |
Mar 31, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Apr 1, 2025 |
Mar 31, 2025 |
|
| 10-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-K |
Feb 20, 2025 |
Dec 31, 2024 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Feb 14, 2025 |
Feb 12, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 14, 2025 |
Feb 12, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 14, 2025 |
Feb 12, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 14, 2025 |
Feb 12, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 14, 2025 |
Feb 12, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 14, 2025 |
Feb 12, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 14, 2025 |
Feb 12, 2025 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 14, 2025 |
Feb 12, 2025 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Feb 14, 2025 |
Feb 14, 2025 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Feb 10, 2025 |
Feb 10, 2025 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Feb 6, 2025 |
Feb 6, 2025 |
001-03480 |
| SCHEDULE 13G/A |
Open Document
|
Open Filing |
|
Jan 30, 2025 |
|
005-35797 |
| 3 |
Open Document
|
Open Filing |
|
Jan 14, 2025 |
Jan 13, 2025 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 8-K CAP EX |
Nov 21, 2024 |
Nov 21, 2024 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Nov 19, 2024 |
Nov 15, 2024 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 19, 2024 |
Nov 15, 2024 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 19, 2024 |
Nov 15, 2024 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 19, 2024 |
Nov 15, 2024 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 19, 2024 |
Nov 15, 2024 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 19, 2024 |
Nov 15, 2024 |
|
| 3 |
Open Document
|
Open Filing |
|
Nov 15, 2024 |
Nov 15, 2024 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Nov 14, 2024 |
Nov 14, 2024 |
001-03480 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Nov 7, 2024 |
|
005-35797 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 09-30-2024 |
Nov 7, 2024 |
Sep 30, 2024 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Nov 7, 2024 |
Nov 7, 2024 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Nov 6, 2024 |
Oct 31, 2024 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Nov 1, 2024 |
Oct 31, 2024 |
001-42276 |
| SC 13D/A |
Open Document
|
Open Filing |
|
Nov 1, 2024 |
|
005-35797 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Nov 1, 2024 |
Oct 31, 2024 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Oct 31, 2024 |
Oct 31, 2024 |
|
| 3 |
Open Document
|
Open Filing |
|
Oct 17, 2024 |
Oct 17, 2024 |
001-42276 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Oct 17, 2024 |
Oct 17, 2024 |
001-03480 |
| 3 |
Open Document
|
Open Filing |
|
Oct 9, 2024 |
Oct 7, 2024 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Oct 2, 2024 |
Oct 1, 2024 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Sep 30, 2024 |
Sep 30, 2024 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Sep 3, 2024 |
Sep 3, 2024 |
001-03480 |
| 3 |
Open Document
|
Open Filing |
|
Aug 21, 2024 |
Aug 15, 2024 |
|
| 3 |
Open Document
|
Open Filing |
|
Aug 21, 2024 |
Aug 15, 2024 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Aug 15, 2024 |
Aug 15, 2024 |
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q |
Aug 8, 2024 |
Jun 30, 2024 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Aug 8, 2024 |
Aug 8, 2024 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Jul 18, 2024 |
Jul 18, 2024 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Jun 28, 2024 |
Jun 28, 2024 |
|
| 11-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 11-K |
Jun 26, 2024 |
Dec 31, 2023 |
001-03480 |
| SD |
Open Document
|
Open Filing |
SD |
May 22, 2024 |
|
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
May 20, 2024 |
May 14, 2024 |
001-03480 |
| 3 |
Open Document
|
Open Filing |
|
May 16, 2024 |
May 14, 2024 |
|
| 4 |
Open Document
|
Open Filing |
|
May 8, 2024 |
May 7, 2024 |
|
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 03-31-2024 |
May 2, 2024 |
Mar 31, 2024 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
May 2, 2024 |
May 2, 2024 |
001-03480 |
| DEFA14A |
Open Document
|
Open Filing |
DEFA14A |
Apr 29, 2024 |
|
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Apr 1, 2024 |
Mar 29, 2024 |
|
| ARS |
Open Document
|
Open Filing |
MDUR 2023 ANNUAL REPORT |
Mar 29, 2024 |
Dec 31, 2023 |
001-03480 |
| DEFA14A |
Open Document
|
Open Filing |
DEFA14A |
Mar 29, 2024 |
|
001-03480 |
| DEF 14A |
Open Document
| Data
|
Open Filing |
DEF 14A |
Mar 29, 2024 |
May 14, 2024 |
001-03480 |
| SC 13D/A |
Open Document
|
Open Filing |
|
Mar 18, 2024 |
|
005-35797 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Mar 18, 2024 |
Mar 14, 2024 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Mar 13, 2024 |
Mar 12, 2024 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Mar 13, 2024 |
Mar 13, 2024 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Feb 26, 2024 |
Feb 22, 2024 |
|
| S-8 |
Open Document
|
Open Filing |
FORM S-8 |
Feb 23, 2024 |
|
333-277317 |
| 10-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES 2023 FORM 10-K |
Feb 22, 2024 |
Dec 31, 2023 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Feb 21, 2024 |
Feb 15, 2024 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2024 |
Feb 15, 2024 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2024 |
Feb 15, 2024 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2024 |
Feb 15, 2024 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2024 |
Feb 15, 2024 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2024 |
Feb 15, 2024 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2024 |
Feb 15, 2024 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2024 |
Feb 15, 2024 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2024 |
Feb 15, 2024 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2024 |
Feb 15, 2024 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2024 |
Jan 5, 2024 |
|
| SC 13G/A |
Open Document
|
Open Filing |
SCHEDULE 13G/A |
Feb 13, 2024 |
|
005-35797 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Feb 8, 2024 |
Feb 8, 2024 |
001-03480 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Jan 24, 2024 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Jan 23, 2024 |
|
005-35797 |
| 3 |
Open Document
|
Open Filing |
|
Jan 9, 2024 |
Jan 6, 2024 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 8-K CAP EX |
Nov 21, 2023 |
Nov 21, 2023 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Nov 17, 2023 |
Nov 15, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 17, 2023 |
Nov 15, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 17, 2023 |
Nov 15, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 17, 2023 |
Nov 15, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 17, 2023 |
Nov 15, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 17, 2023 |
Nov 15, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 17, 2023 |
Nov 16, 2023 |
|
| 3 |
Open Document
|
Open Filing |
|
Nov 17, 2023 |
Nov 16, 2023 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Nov 17, 2023 |
Nov 16, 2023 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Nov 13, 2023 |
Nov 10, 2023 |
001-41642 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 09-30-2023 |
Nov 2, 2023 |
Sep 30, 2023 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Nov 2, 2023 |
Nov 1, 2023 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Nov 2, 2023 |
Nov 2, 2023 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Aug 17, 2023 |
Aug 17, 2023 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Aug 10, 2023 |
Aug 10, 2023 |
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 06-30-2023 |
Aug 3, 2023 |
Jun 30, 2023 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Aug 3, 2023 |
Aug 2, 2023 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Aug 3, 2023 |
Aug 3, 2023 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Jul 12, 2023 |
Jul 11, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Jul 12, 2023 |
Jul 11, 2023 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Jul 10, 2023 |
Jul 10, 2023 |
001-03480 |
| 11-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 11-K |
Jun 21, 2023 |
Dec 31, 2022 |
001-03480 |
| 8-K/A |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Jun 7, 2023 |
May 30, 2023 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Jun 2, 2023 |
May 31, 2023 |
001-41642 |
| 3 |
Open Document
|
Open Filing |
|
Jun 1, 2023 |
Jun 1, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Jun 1, 2023 |
May 31, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Jun 1, 2023 |
May 31, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Jun 1, 2023 |
May 31, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Jun 1, 2023 |
May 31, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Jun 1, 2023 |
May 31, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Jun 1, 2023 |
May 31, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Jun 1, 2023 |
May 31, 2023 |
|
| 3 |
Open Document
|
Open Filing |
|
Jun 1, 2023 |
Jun 1, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Jun 1, 2023 |
May 31, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Jun 1, 2023 |
May 31, 2023 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
FORM 8-K |
Jun 1, 2023 |
May 30, 2023 |
001-03480 |
| SD |
Open Document
|
Open Filing |
SD |
May 24, 2023 |
|
001-03480 |
| 3 |
Open Document
|
Open Filing |
FORM 3 |
May 12, 2023 |
May 9, 2023 |
|
| SC 13D/A |
Open Document
|
Open Filing |
|
May 12, 2023 |
|
005-35797 |
| 8-K |
Open Document
| Data
|
Open Filing |
FORM 8-K |
May 12, 2023 |
May 10, 2023 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
May 11, 2023 |
May 9, 2023 |
001-03480 |
| 3 |
Open Document
|
Open Filing |
|
May 10, 2023 |
May 10, 2023 |
001-41642 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 03-31-2023 |
May 4, 2023 |
Mar 31, 2023 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
May 4, 2023 |
May 3, 2023 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
May 4, 2023 |
May 4, 2023 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
May 4, 2023 |
May 3, 2023 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Apr 25, 2023 |
Apr 25, 2023 |
001-03480 |
| SC 13D/A |
Open Document
|
Open Filing |
SC 13D/A |
Apr 24, 2023 |
|
005-35797 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Apr 11, 2023 |
Apr 11, 2023 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Apr 10, 2023 |
Apr 10, 2023 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Apr 10, 2023 |
Apr 7, 2023 |
001-03480 |
| ARS |
Open Document
|
Open Filing |
MDUR 2022 ANNUAL REPORT |
Mar 24, 2023 |
Dec 31, 2022 |
001-03480 |
| DEFA14A |
Open Document
|
Open Filing |
DEFA14A |
Mar 24, 2023 |
|
001-03480 |
| DEF 14A |
Open Document
| Data
|
Open Filing |
DEF 14A |
Mar 24, 2023 |
|
001-03480 |
| 3 |
Open Document
|
Open Filing |
|
Mar 3, 2023 |
Mar 1, 2023 |
|
| 10-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES 2022 FORM 10-K |
Feb 24, 2023 |
Dec 31, 2022 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Feb 21, 2023 |
Feb 16, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 21, 2023 |
Feb 16, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 21, 2023 |
Feb 16, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 21, 2023 |
Feb 16, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 21, 2023 |
Feb 16, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 21, 2023 |
Feb 16, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 21, 2023 |
Feb 16, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 21, 2023 |
Feb 16, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 21, 2023 |
Feb 16, 2023 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 21, 2023 |
Feb 16, 2023 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Feb 17, 2023 |
Feb 16, 2023 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Feb 16, 2023 |
Feb 16, 2023 |
001-03480 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Feb 10, 2023 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
SCHEDULE 13G/A |
Feb 9, 2023 |
|
005-35797 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Feb 9, 2023 |
Feb 9, 2023 |
001-03480 |
| SC 13D/A |
Open Document
|
Open Filing |
|
Jan 24, 2023 |
|
005-35797 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Jan 24, 2023 |
Jan 24, 2023 |
001-03480 |
| SC 13G |
Open Document
|
Open Filing |
|
Jan 24, 2023 |
|
005-35797 |
| 4 |
Open Document
|
Open Filing |
|
Dec 30, 2022 |
Dec 30, 2022 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Dec 15, 2022 |
Dec 14, 2022 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 8-K CAP EX |
Nov 22, 2022 |
Nov 22, 2022 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Nov 22, 2022 |
Nov 21, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 22, 2022 |
Nov 21, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 22, 2022 |
Nov 21, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 22, 2022 |
Nov 21, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 22, 2022 |
Nov 21, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 22, 2022 |
Nov 21, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 22, 2022 |
Nov 21, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 22, 2022 |
Nov 21, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 22, 2022 |
Nov 21, 2022 |
|
| 3 |
Open Document
|
Open Filing |
|
Nov 21, 2022 |
Nov 17, 2022 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Nov 18, 2022 |
Nov 17, 2022 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Nov 17, 2022 |
Nov 17, 2022 |
001-03480 |
| SC 13D/A |
Open Document
|
Open Filing |
|
Nov 3, 2022 |
|
005-35797 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 09-30-2022 |
Nov 3, 2022 |
Sep 30, 2022 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Nov 3, 2022 |
Nov 3, 2022 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Sep 30, 2022 |
Sep 30, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Aug 25, 2022 |
Aug 24, 2022 |
|
| SC 13D |
Open Document
|
Open Filing |
|
Aug 8, 2022 |
|
005-35797 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 06-30-2022 |
Aug 5, 2022 |
Jun 30, 2022 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Aug 4, 2022 |
Aug 4, 2022 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Aug 4, 2022 |
Aug 4, 2022 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Jun 30, 2022 |
Jun 30, 2022 |
|
| 11-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 11-K |
Jun 27, 2022 |
Dec 31, 2021 |
001-03480 |
| UPLOAD |
Open Document
|
Open Filing |
|
Jun 23, 2022 |
|
|
| SD |
Open Document
|
Open Filing |
SD |
May 25, 2022 |
|
001-03480 |
| CORRESP |
Open Document
|
Open Filing |
|
May 16, 2022 |
|
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
May 12, 2022 |
May 10, 2022 |
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 03-31-2022 |
May 5, 2022 |
Mar 31, 2022 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
May 4, 2022 |
May 4, 2022 |
001-03480 |
| CORRESP |
Open Document
|
Open Filing |
|
Apr 26, 2022 |
|
|
| UPLOAD |
Open Document
|
Open Filing |
|
Apr 14, 2022 |
|
|
| 4 |
Open Document
|
Open Filing |
|
Mar 31, 2022 |
Mar 31, 2022 |
|
| DEFA14A |
Open Document
|
Open Filing |
DEFA14A |
Mar 25, 2022 |
|
001-03480 |
| DEF 14A |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. 2022 PROXY STATEMENT |
Mar 25, 2022 |
May 10, 2022 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Feb 28, 2022 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 28, 2022 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 28, 2022 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 28, 2022 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 28, 2022 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 28, 2022 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 28, 2022 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 28, 2022 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 28, 2022 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 28, 2022 |
Feb 11, 2021 |
|
| 10-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES 2021 FORM 10-K |
Feb 23, 2022 |
Dec 31, 2021 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Feb 22, 2022 |
Feb 17, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 22, 2022 |
Feb 17, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 22, 2022 |
Feb 17, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 22, 2022 |
Feb 17, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 22, 2022 |
Feb 17, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 22, 2022 |
Feb 17, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 22, 2022 |
Feb 17, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 22, 2022 |
Feb 17, 2022 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 22, 2022 |
Feb 17, 2022 |
|
| SC 13G/A |
Open Document
|
Open Filing |
|
Feb 11, 2022 |
|
005-35797 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Feb 9, 2022 |
Feb 9, 2022 |
001-03480 |
| SC 13G/A |
Open Document
|
Open Filing |
SCHEDULE 13G/A |
Feb 9, 2022 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Feb 1, 2022 |
|
005-35797 |
| 5 |
Open Document
|
Open Filing |
|
Jan 13, 2022 |
Dec 31, 2021 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Jan 10, 2022 |
Jan 6, 2022 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Jan 3, 2022 |
Dec 31, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Jan 3, 2022 |
Dec 31, 2021 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 8-K CAP EX |
Nov 23, 2021 |
Nov 23, 2021 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Nov 17, 2021 |
Nov 16, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 17, 2021 |
Nov 16, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 17, 2021 |
Nov 16, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 17, 2021 |
Nov 16, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 17, 2021 |
Nov 16, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 17, 2021 |
Nov 16, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 17, 2021 |
Nov 16, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 17, 2021 |
Nov 16, 2021 |
|
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 09-30-2021 |
Nov 4, 2021 |
Sep 30, 2021 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Nov 3, 2021 |
Nov 3, 2021 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Oct 1, 2021 |
Sep 30, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Sep 30, 2021 |
Sep 30, 2021 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Aug 16, 2021 |
Aug 10, 2021 |
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 6-30-2021 |
Aug 5, 2021 |
Jun 30, 2021 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Aug 4, 2021 |
Aug 4, 2021 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Jul 1, 2021 |
Jun 30, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Jun 30, 2021 |
Jun 30, 2021 |
|
| 11-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 11-K |
Jun 22, 2021 |
Dec 31, 2020 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Jun 15, 2021 |
Jun 14, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Jun 14, 2021 |
Jun 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Jun 11, 2021 |
Jun 9, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Jun 9, 2021 |
Jun 8, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Jun 9, 2021 |
Jun 8, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Jun 8, 2021 |
Jun 7, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Jun 7, 2021 |
Jun 4, 2021 |
|
| SD |
Open Document
|
Open Filing |
SD |
May 27, 2021 |
|
001-03480 |
| 3 |
Open Document
|
Open Filing |
|
May 17, 2021 |
May 11, 2021 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
May 12, 2021 |
May 11, 2021 |
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 3-31-2021 |
May 6, 2021 |
Mar 31, 2021 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
May 6, 2021 |
May 5, 2021 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Apr 1, 2021 |
Mar 31, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Apr 1, 2021 |
Mar 31, 2021 |
|
| DEFA14A |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. 2021 PROXY NOTICE |
Mar 26, 2021 |
|
001-03480 |
| DEF 14A |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. 2021 PROXY STATEMENT |
Mar 26, 2021 |
May 11, 2021 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Mar 12, 2021 |
Mar 9, 2021 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Feb 24, 2021 |
Feb 23, 2021 |
|
| 10-K |
Open Document
| Data
|
Open Filing |
10-K |
Feb 19, 2021 |
Dec 31, 2020 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2021 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2021 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2021 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2021 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2021 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2021 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2021 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2021 |
Feb 11, 2021 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 16, 2021 |
Feb 11, 2021 |
|
| SC 13G/A |
Open Document
|
Open Filing |
SCHEDULE 13G/A |
Feb 10, 2021 |
|
005-35797 |
| SC 13G |
Open Document
|
Open Filing |
|
Feb 9, 2021 |
|
005-35797 |
| 3 |
Open Document
|
Open Filing |
|
Feb 8, 2021 |
Feb 6, 2021 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Feb 3, 2021 |
Feb 3, 2021 |
001-03480 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Jan 29, 2021 |
|
005-35797 |
| 4 |
Open Document
|
Open Filing |
|
Dec 31, 2020 |
Dec 31, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Dec 31, 2020 |
Dec 31, 2020 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Dec 18, 2020 |
Dec 15, 2020 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 8-K EARNINGS GUIDANCE |
Dec 14, 2020 |
Dec 14, 2020 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 8-K CAP EX |
Nov 19, 2020 |
Nov 19, 2020 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Nov 18, 2020 |
Nov 17, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 18, 2020 |
Nov 17, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 18, 2020 |
Nov 17, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 18, 2020 |
Nov 17, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 18, 2020 |
Nov 17, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 18, 2020 |
Nov 17, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 18, 2020 |
Nov 17, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 18, 2020 |
Nov 17, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 18, 2020 |
Nov 17, 2020 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Nov 12, 2020 |
Nov 12, 2020 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Nov 12, 2020 |
Nov 11, 2020 |
|
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 9-30-2020 |
Nov 5, 2020 |
Sep 30, 2020 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Nov 4, 2020 |
Nov 4, 2020 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Oct 8, 2020 |
Sep 16, 2020 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Oct 2, 2020 |
Sep 30, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Sep 30, 2020 |
Sep 30, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Aug 21, 2020 |
Aug 20, 2020 |
|
| S-3ASR |
Open Document
|
Open Filing |
S-3ASR |
Aug 14, 2020 |
|
333-246323 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 06-30-2020 |
Aug 6, 2020 |
Jun 30, 2020 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Aug 4, 2020 |
Aug 4, 2020 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Jul 1, 2020 |
Jun 30, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Jul 1, 2020 |
Jun 30, 2020 |
|
| 11-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 11-K |
Jun 12, 2020 |
Dec 31, 2019 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
May 26, 2020 |
May 21, 2020 |
|
| SD |
Open Document
|
Open Filing |
SD |
May 26, 2020 |
|
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
May 18, 2020 |
May 18, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
May 18, 2020 |
May 12, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
May 15, 2020 |
May 14, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
May 14, 2020 |
May 14, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
May 14, 2020 |
May 13, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
May 14, 2020 |
May 13, 2020 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
May 13, 2020 |
May 12, 2020 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
May 13, 2020 |
May 12, 2020 |
|
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 3-31-2020 |
May 8, 2020 |
Mar 31, 2020 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
May 7, 2020 |
May 7, 2020 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Apr 1, 2020 |
Mar 31, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Apr 1, 2020 |
Mar 31, 2020 |
|
| DEFA14A |
Open Document
|
Open Filing |
DEFA14A |
Mar 27, 2020 |
|
001-03480 |
| DEF 14A |
Open Document
|
Open Filing |
DEF 14A |
Mar 27, 2020 |
May 12, 2020 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Mar 10, 2020 |
Mar 9, 2020 |
|
| 10-K |
Open Document
| Data
|
Open Filing |
10-K |
Feb 21, 2020 |
Dec 31, 2019 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Feb 18, 2020 |
Feb 13, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 18, 2020 |
Feb 13, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 18, 2020 |
Feb 13, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 18, 2020 |
Feb 13, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 18, 2020 |
Feb 13, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 18, 2020 |
Feb 13, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 18, 2020 |
Feb 13, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 18, 2020 |
Feb 13, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 18, 2020 |
Feb 13, 2020 |
|
| 4 |
Open Document
|
Open Filing |
|
Feb 18, 2020 |
Feb 13, 2020 |
|
| SC 13G |
Open Document
|
Open Filing |
|
Feb 14, 2020 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
SCHEDULE 13G/A |
Feb 12, 2020 |
|
005-35797 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Feb 4, 2020 |
Feb 4, 2020 |
001-03480 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Feb 4, 2020 |
|
005-35797 |
| 4 |
Open Document
|
Open Filing |
|
Dec 31, 2019 |
Dec 31, 2019 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 8-K EARNINGS GUIDANCE |
Dec 9, 2019 |
Dec 9, 2019 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Nov 20, 2019 |
Nov 19, 2019 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 20, 2019 |
Nov 19, 2019 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 20, 2019 |
Nov 19, 2019 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 20, 2019 |
Nov 19, 2019 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 20, 2019 |
Nov 19, 2019 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 20, 2019 |
Nov 19, 2019 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 20, 2019 |
Nov 19, 2019 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 20, 2019 |
Nov 19, 2019 |
|
| 4 |
Open Document
|
Open Filing |
|
Nov 20, 2019 |
Nov 19, 2019 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 8-K CAP EX |
Nov 18, 2019 |
Nov 18, 2019 |
001-03480 |
| S-8 |
Open Document
|
Open Filing |
S-8 |
Nov 18, 2019 |
|
333-234760 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 9-30-2019 |
Nov 1, 2019 |
Sep 30, 2019 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Oct 30, 2019 |
Oct 29, 2019 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Oct 4, 2019 |
Oct 1, 2019 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Oct 1, 2019 |
Sep 30, 2019 |
|
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 6-30-2019 |
Aug 2, 2019 |
Jun 30, 2019 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Jul 30, 2019 |
Jul 30, 2019 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
|
Jul 1, 2019 |
Jun 28, 2019 |
|
| 11-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 11-K |
Jun 14, 2019 |
Dec 31, 2018 |
001-03480 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Jun 7, 2019 |
|
005-35797 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
May 31, 2019 |
May 30, 2019 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
May 31, 2019 |
May 30, 2019 |
|
| SD |
Open Document
|
Open Filing |
SD |
May 30, 2019 |
|
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
May 20, 2019 |
May 17, 2019 |
|
| 3 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
May 8, 2019 |
May 7, 2019 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
May 8, 2019 |
May 7, 2019 |
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 3-31-2019 |
May 3, 2019 |
Mar 31, 2019 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Apr 30, 2019 |
Apr 30, 2019 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Apr 1, 2019 |
Mar 29, 2019 |
|
| DEFA14A |
Open Document
|
Open Filing |
DEFA14A |
Mar 22, 2019 |
|
001-03480 |
| DEF 14A |
Open Document
|
Open Filing |
DEF 14A |
Mar 22, 2019 |
May 7, 2019 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Mar 14, 2019 |
Mar 14, 2019 |
|
| PRE 14A |
Open Document
|
Open Filing |
PRE 14A |
Mar 8, 2019 |
May 7, 2019 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Feb 22, 2019 |
Feb 22, 2019 |
001-03480 |
| 424B5 |
Open Document
|
Open Filing |
424B5 |
Feb 22, 2019 |
|
333-220026 |
| 10-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES 2018 FORM 10-K |
Feb 22, 2019 |
Dec 31, 2018 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 20, 2019 |
Feb 19, 2019 |
|
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 8-K |
Feb 19, 2019 |
Feb 19, 2019 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 19, 2019 |
Feb 14, 2019 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 19, 2019 |
Feb 14, 2019 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 19, 2019 |
Feb 14, 2019 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 19, 2019 |
Feb 14, 2019 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 19, 2019 |
Feb 14, 2019 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 19, 2019 |
Feb 14, 2019 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 19, 2019 |
Feb 14, 2019 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 19, 2019 |
Feb 14, 2019 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 19, 2019 |
Feb 14, 2019 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Feb 15, 2019 |
Feb 14, 2019 |
001-03480 |
| SC 13G |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. |
Feb 14, 2019 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
SC 13G/A |
Feb 13, 2019 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Feb 11, 2019 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Feb 6, 2019 |
|
005-35797 |
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Feb 6, 2019 |
Feb 5, 2019 |
001-03480 |
| 15-12B |
Open Document
|
Open Filing |
15-12B |
Jan 14, 2019 |
|
001-03480 |
| 5 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 9, 2019 |
Dec 31, 2018 |
|
| 25-NSE |
Open Document
|
Open Filing |
|
Jan 2, 2019 |
|
001-03480 |
| S-8 POS |
Open Document
|
Open Filing |
S-8 POS |
Jan 2, 2019 |
|
333-212635 |
| S-8 POS |
Open Document
|
Open Filing |
S-8 POS |
Jan 2, 2019 |
|
333-114488 |
| S-8 POS |
Open Document
|
Open Filing |
S-8 POS |
Jan 2, 2019 |
|
333-27877 |
| POSASR |
Open Document
|
Open Filing |
POSASR |
Jan 2, 2019 |
|
333-220026 |
| 8-K12B |
Open Document
|
Open Filing |
8-K12B |
Jan 2, 2019 |
Dec 31, 2018 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Jan 2, 2019 |
Dec 31, 2018 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Dec 31, 2018 |
Dec 31, 2018 |
|
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 8-K |
Dec 18, 2018 |
Dec 18, 2018 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 21, 2018 |
Nov 20, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 21, 2018 |
Nov 20, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 21, 2018 |
Nov 20, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 21, 2018 |
Nov 20, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 21, 2018 |
Nov 20, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 21, 2018 |
Nov 20, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 21, 2018 |
Nov 20, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 21, 2018 |
Nov 20, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 21, 2018 |
Nov 20, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 21, 2018 |
Nov 20, 2018 |
|
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 8-K CAP EX |
Nov 21, 2018 |
Nov 20, 2018 |
001-03480 |
| 3 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 19, 2018 |
Nov 15, 2018 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Nov 15, 2018 |
Nov 15, 2018 |
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 09-30-2018 |
Nov 2, 2018 |
Sep 30, 2018 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 8-K |
Nov 1, 2018 |
Oct 31, 2018 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Sep 28, 2018 |
Sep 28, 2018 |
|
| 3 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Aug 20, 2018 |
Aug 16, 2018 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Aug 16, 2018 |
Aug 16, 2018 |
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 06-30-2018 |
Aug 3, 2018 |
Jun 30, 2018 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 8-K |
Jul 31, 2018 |
Jul 31, 2018 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jun 29, 2018 |
Jun 29, 2018 |
|
| 11-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 11-K |
Jun 15, 2018 |
Dec 31, 2017 |
001-03480 |
| SD |
Open Document
|
Open Filing |
FORM SD |
May 31, 2018 |
|
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
May 9, 2018 |
May 8, 2018 |
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 3-31-2018 |
May 4, 2018 |
Mar 31, 2018 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 8-K |
May 3, 2018 |
May 2, 2018 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Mar 30, 2018 |
Mar 30, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Mar 30, 2018 |
Mar 30, 2018 |
|
| DEFA14A |
Open Document
|
Open Filing |
DEFA14A |
Mar 23, 2018 |
|
001-03480 |
| DEF 14A |
Open Document
|
Open Filing |
DEF 14A |
Mar 23, 2018 |
May 8, 2018 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Mar 13, 2018 |
Mar 13, 2018 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Mar 1, 2018 |
Mar 1, 2018 |
001-03480 |
| 10-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES 2017 FORM 10-K |
Feb 23, 2018 |
Dec 31, 2017 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K - COMPENSATION |
Feb 21, 2018 |
Feb 14, 2018 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 20, 2018 |
Feb 16, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 20, 2018 |
Feb 16, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 20, 2018 |
Feb 16, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 20, 2018 |
Feb 16, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 20, 2018 |
Feb 16, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 20, 2018 |
Feb 16, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 20, 2018 |
Feb 16, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 20, 2018 |
Feb 16, 2018 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 20, 2018 |
Feb 16, 2018 |
|
| SC 13G |
Open Document
|
Open Filing |
MCDONALD'S CORPORATION |
Feb 14, 2018 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
SC 13G/A |
Feb 12, 2018 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Feb 9, 2018 |
|
005-35797 |
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Feb 7, 2018 |
Feb 6, 2018 |
001-03480 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Jan 25, 2018 |
|
005-35797 |
| 5/A |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 23, 2018 |
Dec 31, 2017 |
|
| 5 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 19, 2018 |
Dec 31, 2017 |
|
| 5 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 18, 2018 |
Dec 31, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 3, 2018 |
Dec 29, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 3, 2018 |
Dec 29, 2017 |
|
| 5 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 2, 2018 |
Dec 31, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Dec 7, 2017 |
Dec 6, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2017 |
Nov 21, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2017 |
Nov 21, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2017 |
Nov 21, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2017 |
Nov 21, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2017 |
Nov 21, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2017 |
Nov 21, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2017 |
Nov 21, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2017 |
Nov 21, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2017 |
Nov 21, 2017 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Nov 21, 2017 |
Nov 16, 2017 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 8-K CAP EX |
Nov 21, 2017 |
Nov 21, 2017 |
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 9-30-2017 |
Nov 3, 2017 |
Sep 30, 2017 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 8-K |
Nov 1, 2017 |
Nov 1, 2017 |
001-03480 |
| 3 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Oct 19, 2017 |
Oct 16, 2017 |
|
| 3 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Oct 2, 2017 |
Sep 30, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Oct 2, 2017 |
Sep 30, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Oct 2, 2017 |
Sep 30, 2017 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Sep 21, 2017 |
Sep 15, 2017 |
001-03480 |
| S-3ASR |
Open Document
|
Open Filing |
S-3ASR |
Aug 18, 2017 |
|
333-220026 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Aug 14, 2017 |
Aug 11, 2017 |
|
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 06-30-2017 |
Aug 4, 2017 |
Jun 30, 2017 |
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 8-K |
Aug 1, 2017 |
Aug 1, 2017 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jun 30, 2017 |
Jun 30, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jun 30, 2017 |
Jun 30, 2017 |
|
| 11-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 11-K |
Jun 16, 2017 |
Dec 31, 2016 |
001-03480 |
| SD |
Open Document
|
Open Filing |
SD |
May 25, 2017 |
|
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
May 24, 2017 |
May 23, 2017 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
May 10, 2017 |
May 9, 2017 |
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 3-31-2017 |
May 8, 2017 |
Mar 31, 2017 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 8-K |
May 3, 2017 |
May 3, 2017 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Mar 31, 2017 |
Mar 31, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Mar 31, 2017 |
Mar 31, 2017 |
|
| DEFA14A |
Open Document
|
Open Filing |
DEFA14A |
Mar 24, 2017 |
|
001-03480 |
| DEF 14A |
Open Document
|
Open Filing |
DEF 14A |
Mar 24, 2017 |
Mar 24, 2017 |
001-03480 |
| PRE 14A |
Open Document
|
Open Filing |
PRE 14A |
Mar 14, 2017 |
Mar 14, 2017 |
001-03480 |
| 10-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES 2016 FORM 10-K |
Feb 24, 2017 |
Dec 31, 2016 |
001-03480 |
| 4/A |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 21, 2017 |
Feb 16, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 21, 2017 |
Feb 16, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 21, 2017 |
Feb 16, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 21, 2017 |
Feb 16, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 21, 2017 |
Feb 16, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 21, 2017 |
Feb 16, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 21, 2017 |
Feb 16, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 21, 2017 |
Feb 16, 2017 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 21, 2017 |
Feb 16, 2017 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Feb 21, 2017 |
Feb 16, 2017 |
001-03480 |
| SC 13G/A |
Open Document
|
Open Filing |
SC 13G/A |
Feb 14, 2017 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Feb 10, 2017 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Feb 10, 2017 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Feb 10, 2017 |
|
005-35797 |
| SC 13G |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. |
Feb 9, 2017 |
|
005-35797 |
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 8-K |
Feb 1, 2017 |
Feb 1, 2017 |
001-03480 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Jan 25, 2017 |
|
005-35797 |
| 3 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 5, 2017 |
Jan 1, 2017 |
|
| 4 |
Open Document
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Open Filing |
PRIMARY DOCUMENT |
Jan 3, 2017 |
Dec 31, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 3, 2017 |
Dec 31, 2016 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Jan 3, 2017 |
Jan 3, 2017 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Dec 13, 2016 |
Nov 29, 2016 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Dec 8, 2016 |
Dec 7, 2016 |
|
| POSASR |
Open Document
|
Open Filing |
POSASR |
Dec 5, 2016 |
|
333-200174 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 30, 2016 |
Nov 29, 2016 |
|
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 8-K CAP EX |
Nov 23, 2016 |
Nov 22, 2016 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2016 |
Nov 21, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2016 |
Nov 21, 2016 |
|
| 4 |
Open Document
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Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2016 |
Nov 21, 2016 |
|
| 4 |
Open Document
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Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2016 |
Nov 21, 2016 |
|
| 4 |
Open Document
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Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2016 |
Nov 21, 2016 |
|
| 4 |
Open Document
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Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2016 |
Nov 21, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2016 |
Nov 21, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2016 |
Nov 21, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 22, 2016 |
Nov 21, 2016 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Nov 21, 2016 |
Nov 21, 2016 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Nov 21, 2016 |
Nov 17, 2016 |
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 9-30-2016 |
Nov 7, 2016 |
Sep 30, 2016 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 8-K |
Nov 3, 2016 |
Nov 2, 2016 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Sep 30, 2016 |
Sep 30, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Sep 30, 2016 |
Sep 30, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Aug 25, 2016 |
Aug 24, 2016 |
|
| 4 |
Open Document
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Open Filing |
PRIMARY DOCUMENT |
Aug 24, 2016 |
Aug 23, 2016 |
|
| 4 |
Open Document
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Open Filing |
PRIMARY DOCUMENT |
Aug 23, 2016 |
Aug 22, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Aug 23, 2016 |
Aug 22, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Aug 22, 2016 |
Aug 19, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Aug 19, 2016 |
Aug 18, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Aug 18, 2016 |
Aug 17, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Aug 17, 2016 |
Aug 16, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Aug 16, 2016 |
Aug 15, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Aug 15, 2016 |
Aug 12, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Aug 12, 2016 |
Aug 11, 2016 |
|
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 6-30-2016 |
Aug 5, 2016 |
Jun 30, 2016 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Aug 3, 2016 |
Aug 2, 2016 |
001-03480 |
| S-8 |
Open Document
|
Open Filing |
S-8 |
Jul 22, 2016 |
|
333-212635 |
| 8-K/A |
Open Document
|
Open Filing |
8-K/A |
Jul 21, 2016 |
Jun 24, 2016 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jun 30, 2016 |
Jun 30, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jun 30, 2016 |
Jun 30, 2016 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Jun 28, 2016 |
Jun 24, 2016 |
001-03480 |
| 11-K |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 11-K |
Jun 17, 2016 |
Dec 31, 2015 |
001-03480 |
| SD |
Open Document
|
Open Filing |
SD |
May 26, 2016 |
|
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q 3-31-2016 |
May 6, 2016 |
Mar 31, 2016 |
001-03480 |
| 3/A |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
May 5, 2016 |
Jan 9, 2016 |
|
| 8-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
May 4, 2016 |
May 3, 2016 |
001-03480 |
| 8-K/A |
Open Document
|
Open Filing |
8-K/A |
Apr 29, 2016 |
Feb 10, 2016 |
001-03480 |
| 8-K/A |
Open Document
|
Open Filing |
8-K |
Apr 29, 2016 |
Apr 26, 2016 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Apr 27, 2016 |
Apr 26, 2016 |
001-03480 |
| DEFA14A |
Open Document
|
Open Filing |
DEFA14A |
Apr 14, 2016 |
|
001-03480 |
| 8-K |
Open Document
| Data
|
Open Filing |
8-K |
Apr 5, 2016 |
Apr 4, 2016 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Mar 31, 2016 |
Mar 31, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Mar 31, 2016 |
Mar 31, 2016 |
|
| DEF 14A |
Open Document
|
Open Filing |
DEF 14A |
Mar 16, 2016 |
Mar 16, 2016 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Mar 8, 2016 |
Mar 2, 2016 |
001-03480 |
| 10-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES 2015 FORM 10-K |
Feb 19, 2016 |
Dec 31, 2015 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Feb 18, 2016 |
Feb 11, 2016 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 16, 2016 |
Feb 11, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 16, 2016 |
Feb 11, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 16, 2016 |
Feb 11, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 16, 2016 |
Feb 11, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 16, 2016 |
Feb 11, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 16, 2016 |
Feb 11, 2016 |
|
| SC 13G |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. |
Feb 16, 2016 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
SCHEDULE 13G AMENDMENT NO. 1 |
Feb 12, 2016 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Feb 10, 2016 |
|
005-35797 |
| 4/A |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 4, 2016 |
Nov 18, 2015 |
|
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. 12-31-2015 FORM 8-K |
Feb 4, 2016 |
Feb 3, 2016 |
001-03480 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Jan 26, 2016 |
|
005-35797 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 19, 2016 |
Dec 18, 2015 |
|
| 3 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 13, 2016 |
Jan 9, 2016 |
|
| 3 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 8, 2016 |
Jan 1, 2016 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 4, 2016 |
Dec 31, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 4, 2016 |
Dec 31, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Dec 10, 2015 |
Dec 9, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 19, 2015 |
Nov 18, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 19, 2015 |
Nov 18, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 19, 2015 |
Nov 18, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 19, 2015 |
Nov 18, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 19, 2015 |
Nov 18, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 19, 2015 |
Nov 18, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 19, 2015 |
Nov 18, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 19, 2015 |
Nov 18, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 19, 2015 |
Nov 18, 2015 |
|
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 8-K CAP EX |
Nov 17, 2015 |
Nov 16, 2015 |
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES FORM 10-Q |
Nov 6, 2015 |
Sep 30, 2015 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Nov 3, 2015 |
Nov 2, 2015 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Sep 30, 2015 |
Sep 30, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Sep 30, 2015 |
Sep 30, 2015 |
|
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES JUNE 2015 FORM 10-Q |
Aug 4, 2015 |
Jun 30, 2015 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 8-K |
Aug 4, 2015 |
Aug 3, 2015 |
001-03480 |
| 3 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jul 27, 2015 |
Jul 20, 2015 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Jul 2, 2015 |
Jun 30, 2015 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jul 1, 2015 |
Jun 30, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jul 1, 2015 |
Jun 30, 2015 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Jun 24, 2015 |
Jun 12, 2015 |
001-03480 |
| 11-K |
Open Document
|
Open Filing |
MDU RESOURCES GROUP, INC. FORM 11-K |
Jun 12, 2015 |
Dec 31, 2014 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Jun 8, 2015 |
Jun 3, 2015 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Jun 3, 2015 |
Jun 1, 2015 |
001-03480 |
| SD |
Open Document
|
Open Filing |
SPECIALIZED DISCLOSURE REPORT |
May 28, 2015 |
|
001-03480 |
| 8-A12B/A |
Open Document
|
Open Filing |
8-A12B/A AMENDMENT NO. 9 |
May 8, 2015 |
|
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU RESOURCES GROUP 3-31-2015 FORM 10-Q |
May 8, 2015 |
Mar 31, 2015 |
001-03480 |
| 8-K/A |
Open Document
|
Open Filing |
MDU RESOURCES FORM 8-K/A EARNINGS RELEASE 3.31.15 |
May 7, 2015 |
May 4, 2015 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
MDU RESOURCES FORM 8-K EARNINGS RELEASE 3.31.15 |
May 5, 2015 |
May 4, 2015 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K ITEM 5.07 |
Apr 30, 2015 |
Apr 28, 2015 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
CURRENT REPORT |
Apr 7, 2015 |
Apr 2, 2015 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Apr 1, 2015 |
Mar 31, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Apr 1, 2015 |
Mar 31, 2015 |
|
| DEFR14A |
Open Document
|
Open Filing |
DEFR14A |
Mar 24, 2015 |
|
001-03480 |
| S-8 POS |
Open Document
|
Open Filing |
S-8 POS |
Mar 19, 2015 |
|
333-158572 |
| ARS |
Open Document
|
Open Filing |
AUTO-GENERATED PAPER DOCUMENT |
Mar 18, 2015 |
Dec 31, 2014 |
001-03480 |
| DEF 14A |
Open Document
|
Open Filing |
DEF 14A |
Mar 18, 2015 |
Apr 28, 2015 |
001-03480 |
| 3 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Mar 3, 2015 |
Mar 1, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 27, 2015 |
Feb 26, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 25, 2015 |
Feb 25, 2015 |
|
| 10-K |
Open Document
| Data
|
Open Filing |
MDU RESOURCES 2014 FORM 10-K |
Feb 20, 2015 |
Dec 31, 2014 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 19, 2015 |
Feb 18, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 18, 2015 |
Feb 17, 2015 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 18, 2015 |
Feb 17, 2015 |
|
| 8-K/A |
Open Document
|
Open Filing |
8-K/A |
Feb 18, 2015 |
Jan 4, 2015 |
001-03480 |
| 8-K/A |
Open Document
|
Open Filing |
8-K/A |
Feb 18, 2015 |
Jan 20, 2015 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Feb 18, 2015 |
Feb 11, 2015 |
001-03480 |
| SC 13G |
Open Document
|
Open Filing |
MDU |
Feb 12, 2015 |
|
005-35797 |
| SC 13G |
Open Document
|
Open Filing |
SC 13G |
Feb 12, 2015 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Feb 11, 2015 |
|
005-35797 |
| 8-K |
Open Document
|
Open Filing |
MDU-12-31-2014 EARNINGS RELEASE |
Feb 3, 2015 |
Feb 2, 2015 |
001-03480 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Jan 26, 2015 |
|
005-35797 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Jan 23, 2015 |
Jan 20, 2015 |
001-03480 |
| 3 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 14, 2015 |
Jan 9, 2015 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Jan 9, 2015 |
Jan 9, 2015 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
|
Jan 8, 2015 |
Jan 4, 2015 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Dec 31, 2014 |
Dec 31, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Dec 31, 2014 |
Dec 31, 2014 |
|
| 4/A |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Dec 29, 2014 |
May 7, 2013 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Dec 11, 2014 |
Dec 10, 2014 |
|
| 3 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Dec 1, 2014 |
Nov 29, 2014 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Nov 24, 2014 |
Nov 19, 2014 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Nov 24, 2014 |
Nov 24, 2014 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 20, 2014 |
Nov 19, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 20, 2014 |
Nov 19, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 20, 2014 |
Nov 19, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 20, 2014 |
Nov 19, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 20, 2014 |
Nov 19, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 20, 2014 |
Nov 19, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 20, 2014 |
Nov 19, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 20, 2014 |
Nov 19, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Nov 20, 2014 |
Nov 19, 2014 |
|
| S-3ASR |
Open Document
|
Open Filing |
S-3ASR |
Nov 13, 2014 |
|
333-200174 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Nov 13, 2014 |
Nov 13, 2014 |
001-03480 |
| 10-Q |
Open Document
| Data
|
Open Filing |
MDU 2014930 FORM 10-Q |
Nov 7, 2014 |
Sep 30, 2014 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Nov 4, 2014 |
Nov 3, 2014 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Oct 1, 2014 |
Sep 30, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Oct 1, 2014 |
Sep 30, 2014 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Sep 23, 2014 |
Sep 18, 2014 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Sep 15, 2014 |
Sep 15, 2014 |
001-03480 |
| S-8 |
Open Document
|
Open Filing |
S-8 |
Aug 26, 2014 |
|
333-198364 |
| 8-A12B/A |
Open Document
|
Open Filing |
8-A12B/A |
Aug 19, 2014 |
|
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Aug 19, 2014 |
Aug 14, 2014 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Aug 15, 2014 |
Aug 13, 2014 |
|
| 10-Q |
Open Document
| Data
|
Open Filing |
10-Q |
Aug 8, 2014 |
Jun 30, 2014 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Aug 5, 2014 |
Aug 4, 2014 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
MDU FORM 8-K ITEM 1 |
Jul 21, 2014 |
Jul 17, 2014 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jun 30, 2014 |
Jun 30, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jun 30, 2014 |
Jun 30, 2014 |
|
| 11-K |
Open Document
|
Open Filing |
11-K |
Jun 18, 2014 |
Dec 31, 2013 |
001-03480 |
| SD |
Open Document
|
Open Filing |
SD |
May 30, 2014 |
|
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
May 19, 2014 |
May 19, 2014 |
001-03480 |
| 424B2 |
Open Document
|
Open Filing |
PROSPECTUS SUPPLEMENT |
May 16, 2014 |
|
333-195990 |
| S-3ASR |
Open Document
|
Open Filing |
S-3ASR |
May 15, 2014 |
|
333-195990 |
| 8-K |
Open Document
|
Open Filing |
8-K |
May 15, 2014 |
May 15, 2014 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
May 13, 2014 |
May 12, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
May 13, 2014 |
May 12, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
May 13, 2014 |
May 12, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
May 13, 2014 |
May 12, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
May 8, 2014 |
May 7, 2014 |
|
| 10-Q |
Open Document
| Data
|
Open Filing |
10-Q |
May 7, 2014 |
Mar 31, 2014 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
May 1, 2014 |
Apr 30, 2014 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Apr 24, 2014 |
Apr 22, 2014 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Apr 14, 2014 |
Apr 8, 2014 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Mar 31, 2014 |
Mar 31, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Mar 31, 2014 |
Mar 31, 2014 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Mar 13, 2014 |
Mar 6, 2014 |
001-03480 |
| ARS |
Open Document
|
Open Filing |
AUTO-GENERATED PAPER DOCUMENT |
Mar 12, 2014 |
Dec 31, 2013 |
001-03480 |
| DEF 14A |
Open Document
|
Open Filing |
DEFINITIVE PROXY STATEMENT |
Mar 12, 2014 |
Apr 22, 2014 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 24, 2014 |
Feb 21, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 24, 2014 |
Feb 21, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 21, 2014 |
Feb 20, 2014 |
|
| 10-K |
Open Document
| Data
|
Open Filing |
10-K |
Feb 21, 2014 |
Dec 31, 2013 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 20, 2014 |
Feb 19, 2014 |
|
| 8-K/A |
Open Document
|
Open Filing |
8-K/A |
Feb 19, 2014 |
Dec 3, 2013 |
001-03480 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Feb 19, 2014 |
Feb 12, 2014 |
001-03480 |
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 18, 2014 |
Feb 13, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 18, 2014 |
Feb 13, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 18, 2014 |
Feb 13, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 18, 2014 |
Feb 13, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 18, 2014 |
Feb 13, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 18, 2014 |
Feb 13, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 18, 2014 |
Feb 13, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 18, 2014 |
Feb 13, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 18, 2014 |
Feb 13, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 18, 2014 |
Feb 13, 2014 |
|
| 4 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Feb 18, 2014 |
Feb 13, 2014 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Feb 13, 2014 |
Feb 10, 2014 |
001-03480 |
| SC 13G/A |
Open Document
|
Open Filing |
MDU AS OF 12/31/2013 |
Feb 12, 2014 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Feb 11, 2014 |
|
005-35797 |
| 8-K |
Open Document
|
Open Filing |
8-K |
Feb 4, 2014 |
Feb 3, 2014 |
001-03480 |
| SC 13G |
Open Document
|
Open Filing |
MDU |
Feb 3, 2014 |
|
005-35797 |
| SC 13G/A |
Open Document
|
Open Filing |
|
Jan 30, 2014 |
|
005-35797 |
| 5 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 24, 2014 |
Dec 31, 2013 |
|
| 8-K |
Open Document
|
Open Filing |
8-K |
Jan 23, 2014 |
Jan 21, 2014 |
001-03480 |
| 3 |
Open Document
|
Open Filing |
PRIMARY DOCUMENT |
Jan 8, 2014 |
Jan 3, 2014 |
|