Browse the latest SEC filings and forms submitted by MDU RESOURCES GROUP INC (MDU). Access annual reports, quarterly statements, and other official disclosures.
View Insider Transactions for MDU RESOURCES GROUP INC (MDU).
Search Company Filings →| Form | Filing Date | Description | Link |
|---|---|---|---|
| SCHEDULE 13G/A | March 27, 2026 | - | View Document |
| 10-K | Feb. 20, 2026 | 10-K | View Document |
| 4 | Feb. 19, 2026 | - | View Document |
| 4 | Feb. 19, 2026 | - | View Document |
| 4 | Feb. 19, 2026 | - | View Document |
| 4 | Feb. 19, 2026 | - | View Document |
| 4 | Feb. 19, 2026 | - | View Document |
| 4 | Feb. 19, 2026 | - | View Document |
| 4 | Feb. 19, 2026 | - | View Document |
| 4 | Feb. 19, 2026 | - | View Document |
| 4 | Feb. 17, 2026 | - | View Document |
| SCHEDULE 13G | Feb. 11, 2026 | - | View Document |
| 8-K | Feb. 5, 2026 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | Jan. 16, 2026 | 8-K | View Document |
| 4 | Jan. 2, 2026 | - | View Document |
| 4 | Jan. 2, 2026 | - | View Document |
| 8-K | Dec. 29, 2025 | 8-K | View Document |
| 8-K | Dec. 12, 2025 | 8-K | View Document |
| 8-K | Dec. 5, 2025 | FORM 8-K | View Document |
| 424B5 | Dec. 5, 2025 | 424B5 | View Document |
| 424B5 | Dec. 3, 2025 | 424B5 | View Document |
| 8-K | Nov. 20, 2025 | MDU RESOURCES FORM 8-K CAP EX | View Document |
| 4 | Nov. 14, 2025 | - | View Document |
| 4 | Nov. 14, 2025 | - | View Document |
| 4 | Nov. 14, 2025 | - | View Document |
| 4 | Nov. 14, 2025 | - | View Document |
| 4 | Nov. 14, 2025 | - | View Document |
| 4 | Nov. 14, 2025 | - | View Document |
| 4 | Nov. 14, 2025 | - | View Document |
| 4 | Nov. 14, 2025 | - | View Document |
| 10-Q | Nov. 10, 2025 | MDU RESOURCES FORM 10-Q | View Document |
| 8-K | Nov. 6, 2025 | MDU RESOURCES FORM 8-K EARNINGS RELEASE | View Document |
| 4 | Oct. 1, 2025 | - | View Document |
| 4 | Oct. 1, 2025 | - | View Document |
| 4 | Sept. 9, 2025 | - | View Document |
| 4 | Aug. 19, 2025 | - | View Document |
| 3 | Aug. 14, 2025 | - | View Document |
| 3 | Aug. 14, 2025 | - | View Document |
| 8-K | Aug. 13, 2025 | 8-K | View Document |
| 424B5 | Aug. 7, 2025 | 424B5 | View Document |
| 8-K | Aug. 7, 2025 | FORM 8-K | View Document |
| S-3ASR | Aug. 7, 2025 | S-3ASR | View Document |
| 10-Q | Aug. 7, 2025 | MDU RESOURCES FORM 10-Q | View Document |
| 8-K | Aug. 7, 2025 | MDU RESOURCES FORM 8-K | View Document |
| 4 | July 16, 2025 | - | View Document |
| 4 | July 1, 2025 | - | View Document |
| 4 | July 1, 2025 | - | View Document |
| 11-K/A | June 23, 2025 | MDU RESOURCES GROUP, INC. FORM 11-K/A | View Document |
| 11-K | June 18, 2025 | MDU RESOURCES GROUP, INC. FORM 11-K | View Document |
| SD | May 30, 2025 | SD | View Document |
| 3 | May 19, 2025 | - | View Document |
| 8-K | May 15, 2025 | 8-K | View Document |
| 10-Q | May 8, 2025 | MDU RESOURCES FORM 10-Q | View Document |
| 8-K | May 8, 2025 | MDU RESOURCES FORM 8-K | View Document |
| DEFA14A | April 3, 2025 | DEFA14A | View Document |
| DEF 14A | April 3, 2025 | DEF 14A | View Document |
| ARS | April 3, 2025 | ARS | View Document |
| 4 | April 1, 2025 | - | View Document |
| 4 | April 1, 2025 | - | View Document |
| 10-K | Feb. 20, 2025 | MDU RESOURCES FORM 10-K | View Document |
| 4 | Feb. 14, 2025 | - | View Document |
| 4 | Feb. 14, 2025 | - | View Document |
| 4 | Feb. 14, 2025 | - | View Document |
| 4 | Feb. 14, 2025 | - | View Document |
| 4 | Feb. 14, 2025 | - | View Document |
| 4 | Feb. 14, 2025 | - | View Document |
| 4 | Feb. 14, 2025 | - | View Document |
| 4 | Feb. 14, 2025 | - | View Document |
| 8-K | Feb. 14, 2025 | 8-K | View Document |
| 4 | Feb. 10, 2025 | - | View Document |
| 8-K | Feb. 6, 2025 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| SCHEDULE 13G/A | Jan. 30, 2025 | - | View Document |
| 3 | Jan. 14, 2025 | - | View Document |
| 8-K | Nov. 21, 2024 | MDU RESOURCES FORM 8-K CAP EX | View Document |
| 4 | Nov. 19, 2024 | - | View Document |
| 4 | Nov. 19, 2024 | - | View Document |
| 4 | Nov. 19, 2024 | - | View Document |
| 4 | Nov. 19, 2024 | - | View Document |
| 4 | Nov. 19, 2024 | - | View Document |
| 4 | Nov. 19, 2024 | - | View Document |
| 3 | Nov. 15, 2024 | - | View Document |
| 8-K | Nov. 14, 2024 | 8-K | View Document |
| SC 13G/A | Nov. 7, 2024 | - | View Document |
| 8-K | Nov. 7, 2024 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 10-Q | Nov. 7, 2024 | MDU RESOURCES FORM 10-Q 09-30-2024 | View Document |
| 8-K | Nov. 6, 2024 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | Nov. 1, 2024 | 8-K | View Document |
| SC 13D/A | Nov. 1, 2024 | - | View Document |
| 4 | Oct. 31, 2024 | - | View Document |
| 8-K | Oct. 17, 2024 | 8-K | View Document |
| 3 | Oct. 9, 2024 | - | View Document |
| 8-K | Oct. 2, 2024 | 8-K | View Document |
| 4 | Sept. 30, 2024 | - | View Document |
| 8-K | Sept. 3, 2024 | 8-K | View Document |
| 3 | Aug. 21, 2024 | - | View Document |
| 3 | Aug. 21, 2024 | - | View Document |
| 8-K | Aug. 15, 2024 | 8-K | View Document |
| 10-Q | Aug. 8, 2024 | MDU RESOURCES FORM 10-Q | View Document |
| 8-K | Aug. 8, 2024 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | July 18, 2024 | 8-K | View Document |
| 4 | June 28, 2024 | - | View Document |
| 11-K | June 26, 2024 | MDU RESOURCES FORM 11-K | View Document |
| SD | May 22, 2024 | SD | View Document |
| 8-K | May 20, 2024 | 8-K | View Document |
| 3 | May 16, 2024 | - | View Document |
| 4 | May 8, 2024 | - | View Document |
| 8-K | May 2, 2024 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 10-Q | May 2, 2024 | MDU RESOURCES FORM 10-Q 03-31-2024 | View Document |
| DEFA14A | April 29, 2024 | DEFA14A | View Document |
| 4 | April 1, 2024 | - | View Document |
| DEF 14A | March 29, 2024 | DEF 14A | View Document |
| ARS | March 29, 2024 | MDUR 2023 ANNUAL REPORT | View Document |
| DEFA14A | March 29, 2024 | DEFA14A | View Document |
| SC 13D/A | March 18, 2024 | - | View Document |
| 8-K | March 18, 2024 | 8-K | View Document |
| 8-K | March 13, 2024 | 8-K | View Document |
| 4 | March 13, 2024 | - | View Document |
| 4 | Feb. 26, 2024 | - | View Document |
| S-8 | Feb. 23, 2024 | FORM S-8 | View Document |
| 10-K | Feb. 22, 2024 | MDU RESOURCES 2023 FORM 10-K | View Document |
| 8-K | Feb. 21, 2024 | 8-K | View Document |
| 4 | Feb. 16, 2024 | - | View Document |
| 4 | Feb. 16, 2024 | - | View Document |
| 4 | Feb. 16, 2024 | - | View Document |
| 4 | Feb. 16, 2024 | - | View Document |
| 4 | Feb. 16, 2024 | - | View Document |
| 4 | Feb. 16, 2024 | - | View Document |
| 4 | Feb. 16, 2024 | - | View Document |
| 4 | Feb. 16, 2024 | - | View Document |
| 4 | Feb. 16, 2024 | - | View Document |
| 4 | Feb. 16, 2024 | - | View Document |
| SC 13G/A | Feb. 13, 2024 | SCHEDULE 13G/A | View Document |
| 8-K | Feb. 8, 2024 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| SC 13G/A | Jan. 24, 2024 | - | View Document |
| SC 13G/A | Jan. 23, 2024 | - | View Document |
| 3 | Jan. 9, 2024 | - | View Document |
| 8-K | Nov. 21, 2023 | MDU RESOURCES FORM 8-K CAP EX | View Document |
| 4 | Nov. 17, 2023 | - | View Document |
| 4 | Nov. 17, 2023 | - | View Document |
| 4 | Nov. 17, 2023 | - | View Document |
| 4 | Nov. 17, 2023 | - | View Document |
| 3 | Nov. 17, 2023 | - | View Document |
| 8-K | Nov. 17, 2023 | 8-K | View Document |
| 4 | Nov. 17, 2023 | - | View Document |
| 4 | Nov. 17, 2023 | - | View Document |
| 4 | Nov. 17, 2023 | - | View Document |
| 4 | Nov. 13, 2023 | - | View Document |
| 8-K | Nov. 2, 2023 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | Nov. 2, 2023 | 8-K | View Document |
| 10-Q | Nov. 2, 2023 | MDU RESOURCES FORM 10-Q 09-30-2023 | View Document |
| 8-K | Aug. 17, 2023 | 8-K | View Document |
| 8-K | Aug. 10, 2023 | 8-K | View Document |
| 8-K | Aug. 3, 2023 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | Aug. 3, 2023 | 8-K | View Document |
| 10-Q | Aug. 3, 2023 | MDU RESOURCES FORM 10-Q 06-30-2023 | View Document |
| 4 | July 12, 2023 | - | View Document |
| 4 | July 12, 2023 | - | View Document |
| 8-K | July 10, 2023 | 8-K | View Document |
| 11-K | June 21, 2023 | MDU RESOURCES FORM 11-K | View Document |
| 8-K/A | June 7, 2023 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | June 2, 2023 | - | View Document |
| 4 | June 1, 2023 | - | View Document |
| 4 | June 1, 2023 | - | View Document |
| 4 | June 1, 2023 | - | View Document |
| 4 | June 1, 2023 | - | View Document |
| 3 | June 1, 2023 | - | View Document |
| 4 | June 1, 2023 | - | View Document |
| 4 | June 1, 2023 | - | View Document |
| 8-K | June 1, 2023 | FORM 8-K | View Document |
| 3 | June 1, 2023 | - | View Document |
| 4 | June 1, 2023 | - | View Document |
| 4 | June 1, 2023 | - | View Document |
| 4 | June 1, 2023 | - | View Document |
| SD | May 24, 2023 | SD | View Document |
| 3 | May 12, 2023 | FORM 3 | View Document |
| 8-K | May 12, 2023 | FORM 8-K | View Document |
| SC 13D/A | May 12, 2023 | - | View Document |
| 8-K | May 11, 2023 | 8-K | View Document |
| 3 | May 10, 2023 | - | View Document |
| 10-Q | May 4, 2023 | MDU RESOURCES FORM 10-Q 03-31-2023 | View Document |
| 8-K | May 4, 2023 | 8-K | View Document |
| 8-K | May 4, 2023 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | May 4, 2023 | 8-K | View Document |
| 8-K | April 25, 2023 | 8-K | View Document |
| SC 13D/A | April 24, 2023 | SC 13D/A | View Document |
| 8-K | April 11, 2023 | 8-K | View Document |
| 8-K | April 10, 2023 | 8-K | View Document |
| 8-K | April 10, 2023 | 8-K | View Document |
| ARS | March 24, 2023 | MDUR 2022 ANNUAL REPORT | View Document |
| DEFA14A | March 24, 2023 | DEFA14A | View Document |
| DEF 14A | March 24, 2023 | DEF 14A | View Document |
| 3 | March 3, 2023 | - | View Document |
| 10-K | Feb. 24, 2023 | MDU RESOURCES 2022 FORM 10-K | View Document |
| 4 | Feb. 21, 2023 | - | View Document |
| 4 | Feb. 21, 2023 | - | View Document |
| 4 | Feb. 21, 2023 | - | View Document |
| 4 | Feb. 21, 2023 | - | View Document |
| 4 | Feb. 21, 2023 | - | View Document |
| 4 | Feb. 21, 2023 | - | View Document |
| 4 | Feb. 21, 2023 | - | View Document |
| 4 | Feb. 21, 2023 | - | View Document |
| 4 | Feb. 21, 2023 | - | View Document |
| 4 | Feb. 21, 2023 | - | View Document |
| 8-K | Feb. 17, 2023 | 8-K | View Document |
| 8-K | Feb. 16, 2023 | 8-K | View Document |
| SC 13G/A | Feb. 10, 2023 | - | View Document |
| SC 13G/A | Feb. 9, 2023 | SCHEDULE 13G/A | View Document |
| 8-K | Feb. 9, 2023 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| SC 13G | Jan. 24, 2023 | - | View Document |
| 8-K | Jan. 24, 2023 | 8-K | View Document |
| SC 13D/A | Jan. 24, 2023 | - | View Document |
| 4 | Dec. 30, 2022 | - | View Document |
| 8-K | Dec. 15, 2022 | 8-K | View Document |
| 4 | Nov. 22, 2022 | - | View Document |
| 4 | Nov. 22, 2022 | - | View Document |
| 4 | Nov. 22, 2022 | - | View Document |
| 4 | Nov. 22, 2022 | - | View Document |
| 4 | Nov. 22, 2022 | - | View Document |
| 4 | Nov. 22, 2022 | - | View Document |
| 4 | Nov. 22, 2022 | - | View Document |
| 4 | Nov. 22, 2022 | - | View Document |
| 8-K | Nov. 22, 2022 | MDU RESOURCES FORM 8-K CAP EX | View Document |
| 4 | Nov. 22, 2022 | - | View Document |
| 3 | Nov. 21, 2022 | - | View Document |
| 8-K | Nov. 18, 2022 | 8-K | View Document |
| 8-K | Nov. 17, 2022 | 8-K | View Document |
| SC 13D/A | Nov. 3, 2022 | - | View Document |
| 10-Q | Nov. 3, 2022 | MDU RESOURCES FORM 10-Q 09-30-2022 | View Document |
| 8-K | Nov. 3, 2022 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | Sept. 30, 2022 | - | View Document |
| 4 | Aug. 25, 2022 | - | View Document |
| SC 13D | Aug. 8, 2022 | - | View Document |
| 10-Q | Aug. 5, 2022 | MDU RESOURCES FORM 10-Q 06-30-2022 | View Document |
| 8-K | Aug. 4, 2022 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | Aug. 4, 2022 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | June 30, 2022 | - | View Document |
| 11-K | June 27, 2022 | MDU RESOURCES FORM 11-K | View Document |
| UPLOAD | June 23, 2022 | - | View Document |
| SD | May 25, 2022 | SD | View Document |
| CORRESP | May 16, 2022 | - | View Document |
| 8-K | May 12, 2022 | 8-K | View Document |
| 10-Q | May 5, 2022 | MDU RESOURCES FORM 10-Q 03-31-2022 | View Document |
| 8-K | May 4, 2022 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| CORRESP | April 26, 2022 | - | View Document |
| UPLOAD | April 14, 2022 | - | View Document |
| 4 | March 31, 2022 | - | View Document |
| DEF 14A | March 25, 2022 | MDU RESOURCES GROUP, INC. 2022 PROXY STATEMENT | View Document |
| DEFA14A | March 25, 2022 | DEFA14A | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 4 | Feb. 28, 2022 | - | View Document |
| 10-K | Feb. 23, 2022 | MDU RESOURCES 2021 FORM 10-K | View Document |
| 4 | Feb. 22, 2022 | - | View Document |
| 4 | Feb. 22, 2022 | - | View Document |
| 4 | Feb. 22, 2022 | - | View Document |
| 4 | Feb. 22, 2022 | - | View Document |
| 4 | Feb. 22, 2022 | - | View Document |
| 4 | Feb. 22, 2022 | - | View Document |
| 4 | Feb. 22, 2022 | - | View Document |
| 4 | Feb. 22, 2022 | - | View Document |
| 4 | Feb. 22, 2022 | - | View Document |
| SC 13G/A | Feb. 11, 2022 | - | View Document |
| SC 13G/A | Feb. 9, 2022 | SCHEDULE 13G/A | View Document |
| 8-K | Feb. 9, 2022 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| SC 13G/A | Feb. 1, 2022 | - | View Document |
| 5 | Jan. 13, 2022 | - | View Document |
| 8-K | Jan. 10, 2022 | 8-K | View Document |
| 4 | Jan. 3, 2022 | - | View Document |
| 4 | Jan. 3, 2022 | - | View Document |
| 8-K | Nov. 23, 2021 | MDU RESOURCES FORM 8-K CAP EX | View Document |
| 4 | Nov. 17, 2021 | - | View Document |
| 4 | Nov. 17, 2021 | - | View Document |
| 4 | Nov. 17, 2021 | - | View Document |
| 4 | Nov. 17, 2021 | - | View Document |
| 4 | Nov. 17, 2021 | - | View Document |
| 4 | Nov. 17, 2021 | - | View Document |
| 4 | Nov. 17, 2021 | - | View Document |
| 4 | Nov. 17, 2021 | - | View Document |
| 10-Q | Nov. 4, 2021 | MDU RESOURCES FORM 10-Q 09-30-2021 | View Document |
| 8-K | Nov. 3, 2021 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | Oct. 1, 2021 | - | View Document |
| 4 | Sept. 30, 2021 | - | View Document |
| 8-K | Aug. 16, 2021 | 8-K | View Document |
| 10-Q | Aug. 5, 2021 | MDU RESOURCES FORM 10-Q 6-30-2021 | View Document |
| 8-K | Aug. 4, 2021 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | July 1, 2021 | - | View Document |
| 4 | June 30, 2021 | - | View Document |
| 11-K | June 22, 2021 | MDU RESOURCES FORM 11-K | View Document |
| 4 | June 15, 2021 | - | View Document |
| 4 | June 14, 2021 | - | View Document |
| 4 | June 11, 2021 | - | View Document |
| 4 | June 9, 2021 | - | View Document |
| 4 | June 9, 2021 | - | View Document |
| 4 | June 8, 2021 | - | View Document |
| 4 | June 7, 2021 | - | View Document |
| SD | May 27, 2021 | SD | View Document |
| 3 | May 17, 2021 | - | View Document |
| 8-K | May 12, 2021 | 8-K | View Document |
| 8-K | May 6, 2021 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 10-Q | May 6, 2021 | MDU RESOURCES FORM 10-Q 3-31-2021 | View Document |
| 4 | April 1, 2021 | - | View Document |
| 4 | April 1, 2021 | - | View Document |
| DEFA14A | March 26, 2021 | MDU RESOURCES GROUP, INC. 2021 PROXY NOTICE | View Document |
| DEF 14A | March 26, 2021 | MDU RESOURCES GROUP, INC. 2021 PROXY STATEMENT | View Document |
| 8-K | March 12, 2021 | 8-K | View Document |
| 4 | Feb. 24, 2021 | - | View Document |
| 10-K | Feb. 19, 2021 | 10-K | View Document |
| 4 | Feb. 16, 2021 | - | View Document |
| 4 | Feb. 16, 2021 | - | View Document |
| 4 | Feb. 16, 2021 | - | View Document |
| 4 | Feb. 16, 2021 | - | View Document |
| 4 | Feb. 16, 2021 | - | View Document |
| 4 | Feb. 16, 2021 | - | View Document |
| 4 | Feb. 16, 2021 | - | View Document |
| 4 | Feb. 16, 2021 | - | View Document |
| 4 | Feb. 16, 2021 | - | View Document |
| SC 13G/A | Feb. 10, 2021 | SCHEDULE 13G/A | View Document |
| SC 13G | Feb. 9, 2021 | - | View Document |
| 3 | Feb. 8, 2021 | - | View Document |
| 8-K | Feb. 3, 2021 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| SC 13G/A | Jan. 29, 2021 | - | View Document |
| 4 | Dec. 31, 2020 | - | View Document |
| 4 | Dec. 31, 2020 | - | View Document |
| 8-K | Dec. 18, 2020 | 8-K | View Document |
| 8-K | Dec. 14, 2020 | MDU RESOURCES FORM 8-K EARNINGS GUIDANCE | View Document |
| 8-K | Nov. 19, 2020 | MDU RESOURCES FORM 8-K CAP EX | View Document |
| 4 | Nov. 18, 2020 | - | View Document |
| 4 | Nov. 18, 2020 | - | View Document |
| 4 | Nov. 18, 2020 | - | View Document |
| 4 | Nov. 18, 2020 | - | View Document |
| 4 | Nov. 18, 2020 | - | View Document |
| 4 | Nov. 18, 2020 | - | View Document |
| 4 | Nov. 18, 2020 | - | View Document |
| 4 | Nov. 18, 2020 | - | View Document |
| 4 | Nov. 18, 2020 | - | View Document |
| 4 | Nov. 12, 2020 | - | View Document |
| 8-K | Nov. 12, 2020 | 8-K | View Document |
| 10-Q | Nov. 5, 2020 | MDU RESOURCES FORM 10-Q 9-30-2020 | View Document |
| 8-K | Nov. 4, 2020 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | Oct. 8, 2020 | 8-K | View Document |
| 4 | Oct. 2, 2020 | - | View Document |
| 4 | Sept. 30, 2020 | - | View Document |
| 4 | Aug. 21, 2020 | - | View Document |
| S-3ASR | Aug. 14, 2020 | S-3ASR | View Document |
| 10-Q | Aug. 6, 2020 | MDU RESOURCES FORM 10-Q 06-30-2020 | View Document |
| 8-K | Aug. 4, 2020 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | July 1, 2020 | - | View Document |
| 4 | July 1, 2020 | - | View Document |
| 11-K | June 12, 2020 | MDU RESOURCES FORM 11-K | View Document |
| SD | May 26, 2020 | SD | View Document |
| 4 | May 26, 2020 | - | View Document |
| 4 | May 18, 2020 | - | View Document |
| 4 | May 18, 2020 | - | View Document |
| 4 | May 15, 2020 | - | View Document |
| 4 | May 14, 2020 | - | View Document |
| 4 | May 14, 2020 | - | View Document |
| 4 | May 14, 2020 | - | View Document |
| 8-K | May 13, 2020 | 8-K | View Document |
| 4 | May 13, 2020 | - | View Document |
| 10-Q | May 8, 2020 | MDU RESOURCES FORM 10-Q 3-31-2020 | View Document |
| 8-K | May 7, 2020 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | April 1, 2020 | - | View Document |
| 4 | April 1, 2020 | - | View Document |
| DEFA14A | March 27, 2020 | DEFA14A | View Document |
| DEF 14A | March 27, 2020 | DEF 14A | View Document |
| 4 | March 10, 2020 | - | View Document |
| 10-K | Feb. 21, 2020 | 10-K | View Document |
| 4 | Feb. 18, 2020 | - | View Document |
| 4 | Feb. 18, 2020 | - | View Document |
| 4 | Feb. 18, 2020 | - | View Document |
| 4 | Feb. 18, 2020 | - | View Document |
| 4 | Feb. 18, 2020 | - | View Document |
| 4 | Feb. 18, 2020 | - | View Document |
| 4 | Feb. 18, 2020 | - | View Document |
| 4 | Feb. 18, 2020 | - | View Document |
| 4 | Feb. 18, 2020 | - | View Document |
| 4 | Feb. 18, 2020 | - | View Document |
| SC 13G | Feb. 14, 2020 | - | View Document |
| SC 13G/A | Feb. 12, 2020 | SCHEDULE 13G/A | View Document |
| 8-K | Feb. 4, 2020 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| SC 13G/A | Feb. 4, 2020 | - | View Document |
| 4 | Dec. 31, 2019 | - | View Document |
| 8-K | Dec. 9, 2019 | MDU RESOURCES FORM 8-K EARNINGS GUIDANCE | View Document |
| 4 | Nov. 20, 2019 | - | View Document |
| 4 | Nov. 20, 2019 | - | View Document |
| 4 | Nov. 20, 2019 | - | View Document |
| 4 | Nov. 20, 2019 | - | View Document |
| 4 | Nov. 20, 2019 | - | View Document |
| 4 | Nov. 20, 2019 | - | View Document |
| 4 | Nov. 20, 2019 | - | View Document |
| 4 | Nov. 20, 2019 | - | View Document |
| 4 | Nov. 20, 2019 | - | View Document |
| 8-K | Nov. 18, 2019 | MDU RESOURCES FORM 8-K CAP EX | View Document |
| S-8 | Nov. 18, 2019 | S-8 | View Document |
| 10-Q | Nov. 1, 2019 | MDU RESOURCES FORM 10-Q 9-30-2019 | View Document |
| 8-K | Oct. 30, 2019 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | Oct. 4, 2019 | 8-K | View Document |
| 4 | Oct. 1, 2019 | - | View Document |
| 10-Q | Aug. 2, 2019 | MDU RESOURCES FORM 10-Q 6-30-2019 | View Document |
| 8-K | July 30, 2019 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | July 1, 2019 | - | View Document |
| 11-K | June 14, 2019 | MDU RESOURCES FORM 11-K | View Document |
| SC 13G/A | June 7, 2019 | - | View Document |
| 4 | May 31, 2019 | PRIMARY DOCUMENT | View Document |
| 4 | May 31, 2019 | PRIMARY DOCUMENT | View Document |
| SD | May 30, 2019 | SD | View Document |
| 4 | May 20, 2019 | PRIMARY DOCUMENT | View Document |
| 3 | May 8, 2019 | PRIMARY DOCUMENT | View Document |
| 8-K | May 8, 2019 | 8-K | View Document |
| 10-Q | May 3, 2019 | MDU RESOURCES FORM 10-Q 3-31-2019 | View Document |
| 8-K | April 30, 2019 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | April 1, 2019 | PRIMARY DOCUMENT | View Document |
| DEF 14A | March 22, 2019 | DEF 14A | View Document |
| DEFA14A | March 22, 2019 | DEFA14A | View Document |
| 4 | March 14, 2019 | PRIMARY DOCUMENT | View Document |
| PRE 14A | March 8, 2019 | PRE 14A | View Document |
| 424B5 | Feb. 22, 2019 | 424B5 | View Document |
| 10-K | Feb. 22, 2019 | MDU RESOURCES 2018 FORM 10-K | View Document |
| 8-K | Feb. 22, 2019 | 8-K | View Document |
| 4 | Feb. 20, 2019 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 19, 2019 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 19, 2019 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 19, 2019 | PRIMARY DOCUMENT | View Document |
| 8-K | Feb. 19, 2019 | MDU RESOURCES FORM 8-K | View Document |
| 4 | Feb. 19, 2019 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 19, 2019 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 19, 2019 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 19, 2019 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 19, 2019 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 19, 2019 | PRIMARY DOCUMENT | View Document |
| 8-K | Feb. 15, 2019 | 8-K | View Document |
| SC 13G | Feb. 14, 2019 | MDU RESOURCES GROUP, INC. | View Document |
| SC 13G/A | Feb. 13, 2019 | SC 13G/A | View Document |
| SC 13G/A | Feb. 11, 2019 | - | View Document |
| 8-K | Feb. 6, 2019 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| SC 13G/A | Feb. 6, 2019 | - | View Document |
| 15-12B | Jan. 14, 2019 | 15-12B | View Document |
| 5 | Jan. 9, 2019 | PRIMARY DOCUMENT | View Document |
| POSASR | Jan. 2, 2019 | POSASR | View Document |
| S-8 POS | Jan. 2, 2019 | S-8 POS | View Document |
| S-8 POS | Jan. 2, 2019 | S-8 POS | View Document |
| S-8 POS | Jan. 2, 2019 | S-8 POS | View Document |
| 25-NSE | Jan. 2, 2019 | - | View Document |
| 8-K | Jan. 2, 2019 | 8-K | View Document |
| 8-K12B | Jan. 2, 2019 | 8-K12B | View Document |
| 4 | Dec. 31, 2018 | PRIMARY DOCUMENT | View Document |
| 8-K | Dec. 18, 2018 | MDU RESOURCES FORM 8-K | View Document |
| 4 | Nov. 21, 2018 | PRIMARY DOCUMENT | View Document |
| 8-K | Nov. 21, 2018 | MDU RESOURCES FORM 8-K CAP EX | View Document |
| 4 | Nov. 21, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 21, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 21, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 21, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 21, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 21, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 21, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 21, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 21, 2018 | PRIMARY DOCUMENT | View Document |
| 3 | Nov. 19, 2018 | PRIMARY DOCUMENT | View Document |
| 8-K | Nov. 15, 2018 | 8-K | View Document |
| 10-Q | Nov. 2, 2018 | MDU RESOURCES FORM 10-Q 09-30-2018 | View Document |
| 8-K | Nov. 1, 2018 | MDU RESOURCES FORM 8-K | View Document |
| 4 | Sept. 28, 2018 | PRIMARY DOCUMENT | View Document |
| 3 | Aug. 20, 2018 | PRIMARY DOCUMENT | View Document |
| 8-K | Aug. 16, 2018 | 8-K | View Document |
| 10-Q | Aug. 3, 2018 | MDU RESOURCES FORM 10-Q 06-30-2018 | View Document |
| 8-K | July 31, 2018 | MDU RESOURCES FORM 8-K | View Document |
| 4 | June 29, 2018 | PRIMARY DOCUMENT | View Document |
| 11-K | June 15, 2018 | MDU RESOURCES FORM 11-K | View Document |
| SD | May 31, 2018 | FORM SD | View Document |
| 8-K | May 9, 2018 | 8-K | View Document |
| 10-Q | May 4, 2018 | MDU RESOURCES FORM 10-Q 3-31-2018 | View Document |
| 8-K | May 3, 2018 | MDU RESOURCES FORM 8-K | View Document |
| 4 | March 30, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | March 30, 2018 | PRIMARY DOCUMENT | View Document |
| DEF 14A | March 23, 2018 | DEF 14A | View Document |
| DEFA14A | March 23, 2018 | DEFA14A | View Document |
| 4 | March 13, 2018 | PRIMARY DOCUMENT | View Document |
| 8-K | March 1, 2018 | 8-K | View Document |
| 10-K | Feb. 23, 2018 | MDU RESOURCES 2017 FORM 10-K | View Document |
| 8-K | Feb. 21, 2018 | 8-K - COMPENSATION | View Document |
| 4 | Feb. 20, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 20, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 20, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 20, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 20, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 20, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 20, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 20, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 20, 2018 | PRIMARY DOCUMENT | View Document |
| SC 13G | Feb. 14, 2018 | MCDONALD'S CORPORATION | View Document |
| SC 13G/A | Feb. 12, 2018 | SC 13G/A | View Document |
| SC 13G/A | Feb. 9, 2018 | - | View Document |
| 8-K | Feb. 7, 2018 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| SC 13G/A | Jan. 25, 2018 | - | View Document |
| 5/A | Jan. 23, 2018 | PRIMARY DOCUMENT | View Document |
| 5 | Jan. 19, 2018 | PRIMARY DOCUMENT | View Document |
| 5 | Jan. 18, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Jan. 3, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Jan. 3, 2018 | PRIMARY DOCUMENT | View Document |
| 5 | Jan. 2, 2018 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 7, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2017 | PRIMARY DOCUMENT | View Document |
| 8-K | Nov. 21, 2017 | MDU RESOURCES FORM 8-K CAP EX | View Document |
| 8-K | Nov. 21, 2017 | 8-K | View Document |
| 10-Q | Nov. 3, 2017 | MDU RESOURCES FORM 10-Q 9-30-2017 | View Document |
| 8-K | Nov. 1, 2017 | MDU RESOURCES FORM 8-K | View Document |
| 3 | Oct. 19, 2017 | PRIMARY DOCUMENT | View Document |
| 3 | Oct. 2, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Oct. 2, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Oct. 2, 2017 | PRIMARY DOCUMENT | View Document |
| 8-K | Sept. 21, 2017 | 8-K | View Document |
| S-3ASR | Aug. 18, 2017 | S-3ASR | View Document |
| 4 | Aug. 14, 2017 | PRIMARY DOCUMENT | View Document |
| 10-Q | Aug. 4, 2017 | MDU RESOURCES FORM 10-Q 06-30-2017 | View Document |
| 8-K | Aug. 1, 2017 | MDU RESOURCES FORM 8-K | View Document |
| 4 | June 30, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | June 30, 2017 | PRIMARY DOCUMENT | View Document |
| 11-K | June 16, 2017 | MDU RESOURCES FORM 11-K | View Document |
| SD | May 25, 2017 | SD | View Document |
| 8-K | May 24, 2017 | 8-K | View Document |
| 8-K | May 10, 2017 | 8-K | View Document |
| 10-Q | May 8, 2017 | MDU RESOURCES FORM 10-Q 3-31-2017 | View Document |
| 8-K | May 3, 2017 | MDU RESOURCES FORM 8-K | View Document |
| 4 | March 31, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | March 31, 2017 | PRIMARY DOCUMENT | View Document |
| DEF 14A | March 24, 2017 | DEF 14A | View Document |
| DEFA14A | March 24, 2017 | DEFA14A | View Document |
| PRE 14A | March 14, 2017 | PRE 14A | View Document |
| 10-K | Feb. 24, 2017 | MDU RESOURCES 2016 FORM 10-K | View Document |
| 4 | Feb. 21, 2017 | PRIMARY DOCUMENT | View Document |
| 4/A | Feb. 21, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 21, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 21, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 21, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 21, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 21, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 21, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 21, 2017 | PRIMARY DOCUMENT | View Document |
| 8-K | Feb. 21, 2017 | 8-K | View Document |
| SC 13G/A | Feb. 14, 2017 | SC 13G/A | View Document |
| SC 13G/A | Feb. 10, 2017 | - | View Document |
| SC 13G/A | Feb. 10, 2017 | - | View Document |
| SC 13G/A | Feb. 10, 2017 | - | View Document |
| SC 13G | Feb. 9, 2017 | MDU RESOURCES GROUP, INC. | View Document |
| 8-K | Feb. 1, 2017 | MDU RESOURCES FORM 8-K | View Document |
| SC 13G/A | Jan. 25, 2017 | - | View Document |
| 3 | Jan. 5, 2017 | PRIMARY DOCUMENT | View Document |
| 8-K | Jan. 3, 2017 | 8-K | View Document |
| 4 | Jan. 3, 2017 | PRIMARY DOCUMENT | View Document |
| 4 | Jan. 3, 2017 | PRIMARY DOCUMENT | View Document |
| 8-K | Dec. 13, 2016 | 8-K | View Document |
| 4 | Dec. 8, 2016 | PRIMARY DOCUMENT | View Document |
| POSASR | Dec. 5, 2016 | POSASR | View Document |
| 4 | Nov. 30, 2016 | PRIMARY DOCUMENT | View Document |
| 8-K | Nov. 23, 2016 | MDU RESOURCES FORM 8-K CAP EX | View Document |
| 4 | Nov. 22, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2016 | PRIMARY DOCUMENT | View Document |
| 8-K | Nov. 21, 2016 | 8-K | View Document |
| 8-K | Nov. 21, 2016 | 8-K | View Document |
| 10-Q | Nov. 7, 2016 | MDU RESOURCES FORM 10-Q 9-30-2016 | View Document |
| 8-K | Nov. 3, 2016 | MDU RESOURCES FORM 8-K | View Document |
| 4 | Sept. 30, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Sept. 30, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Aug. 25, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Aug. 24, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Aug. 23, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Aug. 23, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Aug. 22, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Aug. 19, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Aug. 18, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Aug. 17, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Aug. 16, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Aug. 15, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Aug. 12, 2016 | PRIMARY DOCUMENT | View Document |
| 10-Q | Aug. 5, 2016 | MDU RESOURCES FORM 10-Q 6-30-2016 | View Document |
| 8-K | Aug. 3, 2016 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| S-8 | July 22, 2016 | S-8 | View Document |
| 8-K/A | July 21, 2016 | 8-K/A | View Document |
| 4 | June 30, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | June 30, 2016 | PRIMARY DOCUMENT | View Document |
| 8-K | June 28, 2016 | 8-K | View Document |
| 11-K | June 17, 2016 | MDU RESOURCES GROUP, INC. FORM 11-K | View Document |
| SD | May 26, 2016 | SD | View Document |
| 10-Q | May 6, 2016 | MDU RESOURCES FORM 10-Q 3-31-2016 | View Document |
| 3/A | May 5, 2016 | PRIMARY DOCUMENT | View Document |
| 8-K | May 4, 2016 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K/A | April 29, 2016 | 8-K/A | View Document |
| 8-K/A | April 29, 2016 | 8-K | View Document |
| 8-K | April 27, 2016 | 8-K | View Document |
| DEFA14A | April 14, 2016 | DEFA14A | View Document |
| 8-K | April 5, 2016 | 8-K | View Document |
| 4 | March 31, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | March 31, 2016 | PRIMARY DOCUMENT | View Document |
| DEF 14A | March 16, 2016 | DEF 14A | View Document |
| 8-K | March 8, 2016 | 8-K | View Document |
| 10-K | Feb. 19, 2016 | MDU RESOURCES 2015 FORM 10-K | View Document |
| 8-K | Feb. 18, 2016 | 8-K | View Document |
| 4 | Feb. 16, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 16, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 16, 2016 | PRIMARY DOCUMENT | View Document |
| SC 13G | Feb. 16, 2016 | MDU RESOURCES GROUP, INC. | View Document |
| 4 | Feb. 16, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 16, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 16, 2016 | PRIMARY DOCUMENT | View Document |
| SC 13G/A | Feb. 12, 2016 | SCHEDULE 13G AMENDMENT NO. 1 | View Document |
| SC 13G/A | Feb. 10, 2016 | - | View Document |
| 8-K | Feb. 4, 2016 | MDU RESOURCES GROUP, INC. 12-31-2015 FORM 8-K | View Document |
| 4/A | Feb. 4, 2016 | PRIMARY DOCUMENT | View Document |
| SC 13G/A | Jan. 26, 2016 | - | View Document |
| 4 | Jan. 19, 2016 | PRIMARY DOCUMENT | View Document |
| 3 | Jan. 13, 2016 | PRIMARY DOCUMENT | View Document |
| 3 | Jan. 8, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Jan. 4, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Jan. 4, 2016 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 10, 2015 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 19, 2015 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 19, 2015 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 19, 2015 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 19, 2015 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 19, 2015 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 19, 2015 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 19, 2015 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 19, 2015 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 19, 2015 | PRIMARY DOCUMENT | View Document |
| 8-K | Nov. 17, 2015 | MDU RESOURCES FORM 8-K CAP EX | View Document |
| 10-Q | Nov. 6, 2015 | MDU RESOURCES FORM 10-Q | View Document |
| 8-K | Nov. 3, 2015 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | Sept. 30, 2015 | PRIMARY DOCUMENT | View Document |
| 4 | Sept. 30, 2015 | PRIMARY DOCUMENT | View Document |
| 8-K | Aug. 4, 2015 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 10-Q | Aug. 4, 2015 | MDU RESOURCES JUNE 2015 FORM 10-Q | View Document |
| 3 | July 27, 2015 | PRIMARY DOCUMENT | View Document |
| 8-K | July 2, 2015 | 8-K | View Document |
| 4 | July 1, 2015 | PRIMARY DOCUMENT | View Document |
| 4 | July 1, 2015 | PRIMARY DOCUMENT | View Document |
| 8-K | June 24, 2015 | 8-K | View Document |
| 11-K | June 12, 2015 | MDU RESOURCES GROUP, INC. FORM 11-K | View Document |
| 8-K | June 8, 2015 | 8-K | View Document |
| 8-K | June 3, 2015 | 8-K | View Document |
| SD | May 28, 2015 | SPECIALIZED DISCLOSURE REPORT | View Document |
| 10-Q | May 8, 2015 | MDU RESOURCES GROUP 3-31-2015 FORM 10-Q | View Document |
| 8-A12B/A | May 8, 2015 | 8-A12B/A AMENDMENT NO. 9 | View Document |
| 8-K/A | May 7, 2015 | MDU RESOURCES FORM 8-K/A EARNINGS RELEASE 3.31.15 | View Document |
| 8-K | May 5, 2015 | MDU RESOURCES FORM 8-K EARNINGS RELEASE 3.31.15 | View Document |
| 8-K | April 30, 2015 | 8-K ITEM 5.07 | View Document |
| 8-K | April 7, 2015 | CURRENT REPORT | View Document |
| 4 | April 1, 2015 | PRIMARY DOCUMENT | View Document |
| 4 | April 1, 2015 | PRIMARY DOCUMENT | View Document |
| DEFR14A | March 24, 2015 | DEFR14A | View Document |
| S-8 POS | March 19, 2015 | S-8 POS | View Document |
| ARS | March 18, 2015 | AUTO-GENERATED PAPER DOCUMENT | View Document |
| DEF 14A | March 18, 2015 | DEF 14A | View Document |
| 3 | March 3, 2015 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 27, 2015 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 25, 2015 | PRIMARY DOCUMENT | View Document |
| 10-K | Feb. 20, 2015 | MDU RESOURCES 2014 FORM 10-K | View Document |
| 4 | Feb. 19, 2015 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 18, 2015 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 18, 2015 | PRIMARY DOCUMENT | View Document |
| 8-K | Feb. 18, 2015 | 8-K | View Document |
| 8-K/A | Feb. 18, 2015 | 8-K/A | View Document |
| 8-K/A | Feb. 18, 2015 | 8-K/A | View Document |
| SC 13G | Feb. 12, 2015 | MDU | View Document |
| SC 13G | Feb. 12, 2015 | SC 13G | View Document |
| SC 13G/A | Feb. 11, 2015 | - | View Document |
| 8-K | Feb. 3, 2015 | MDU-12-31-2014 EARNINGS RELEASE | View Document |
| SC 13G/A | Jan. 26, 2015 | - | View Document |
| 8-K | Jan. 23, 2015 | 8-K | View Document |
| 3 | Jan. 14, 2015 | PRIMARY DOCUMENT | View Document |
| 8-K | Jan. 9, 2015 | 8-K | View Document |
| 8-K | Jan. 8, 2015 | - | View Document |
| 4 | Dec. 31, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 31, 2014 | PRIMARY DOCUMENT | View Document |
| 4/A | Dec. 29, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 11, 2014 | PRIMARY DOCUMENT | View Document |
| 3 | Dec. 1, 2014 | PRIMARY DOCUMENT | View Document |
| 8-K | Nov. 24, 2014 | 8-K | View Document |
| 8-K | Nov. 24, 2014 | 8-K | View Document |
| 4 | Nov. 20, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2014 | PRIMARY DOCUMENT | View Document |
| S-3ASR | Nov. 13, 2014 | S-3ASR | View Document |
| 8-K | Nov. 13, 2014 | 8-K | View Document |
| 10-Q | Nov. 7, 2014 | MDU 2014930 FORM 10-Q | View Document |
| 8-K | Nov. 4, 2014 | 8-K | View Document |
| 4 | Oct. 1, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Oct. 1, 2014 | PRIMARY DOCUMENT | View Document |
| 8-K | Sept. 23, 2014 | 8-K | View Document |
| 8-K | Sept. 15, 2014 | 8-K | View Document |
| S-8 | Aug. 26, 2014 | S-8 | View Document |
| 8-K | Aug. 19, 2014 | 8-K | View Document |
| 8-A12B/A | Aug. 19, 2014 | 8-A12B/A | View Document |
| 4 | Aug. 15, 2014 | PRIMARY DOCUMENT | View Document |
| 10-Q | Aug. 8, 2014 | 10-Q | View Document |
| 8-K | Aug. 5, 2014 | 8-K | View Document |
| 8-K | July 21, 2014 | MDU FORM 8-K ITEM 1 | View Document |
| 4 | June 30, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | June 30, 2014 | PRIMARY DOCUMENT | View Document |
| 11-K | June 18, 2014 | 11-K | View Document |
| SD | May 30, 2014 | SD | View Document |
| 8-K | May 19, 2014 | 8-K | View Document |
| 424B2 | May 16, 2014 | PROSPECTUS SUPPLEMENT | View Document |
| S-3ASR | May 15, 2014 | S-3ASR | View Document |
| 8-K | May 15, 2014 | 8-K | View Document |
| 4 | May 13, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | May 13, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | May 13, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | May 13, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | May 8, 2014 | PRIMARY DOCUMENT | View Document |
| 10-Q | May 7, 2014 | 10-Q | View Document |
| 8-K | May 1, 2014 | 8-K | View Document |
| 8-K | April 24, 2014 | 8-K | View Document |
| 8-K | April 14, 2014 | 8-K | View Document |
| 4 | March 31, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | March 31, 2014 | PRIMARY DOCUMENT | View Document |
| 8-K | March 13, 2014 | 8-K | View Document |
| ARS | March 12, 2014 | AUTO-GENERATED PAPER DOCUMENT | View Document |
| DEF 14A | March 12, 2014 | DEFINITIVE PROXY STATEMENT | View Document |
| 4 | Feb. 24, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 24, 2014 | PRIMARY DOCUMENT | View Document |
| 10-K | Feb. 21, 2014 | 10-K | View Document |
| 4 | Feb. 21, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 20, 2014 | PRIMARY DOCUMENT | View Document |
| 8-K/A | Feb. 19, 2014 | 8-K/A | View Document |
| 8-K | Feb. 19, 2014 | 8-K | View Document |
| 4 | Feb. 18, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 18, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 18, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 18, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 18, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 18, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 18, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 18, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 18, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 18, 2014 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 18, 2014 | PRIMARY DOCUMENT | View Document |
| 8-K | Feb. 13, 2014 | 8-K | View Document |
| SC 13G/A | Feb. 12, 2014 | MDU AS OF 12/31/2013 | View Document |
| SC 13G/A | Feb. 11, 2014 | - | View Document |
| 8-K | Feb. 4, 2014 | 8-K | View Document |
| SC 13G | Feb. 3, 2014 | MDU | View Document |
| SC 13G/A | Jan. 30, 2014 | - | View Document |
| 5 | Jan. 24, 2014 | PRIMARY DOCUMENT | View Document |
| 8-K | Jan. 23, 2014 | 8-K | View Document |
| 3 | Jan. 8, 2014 | PRIMARY DOCUMENT | View Document |
| 8-K | Dec. 19, 2013 | 8-K | View Document |
| 4 | Dec. 10, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 10, 2013 | PRIMARY DOCUMENT | View Document |
| 8-K | Dec. 3, 2013 | 8-K | View Document |
| UPLOAD | Dec. 2, 2013 | - | View Document |
| 4 | Nov. 22, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 21, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 21, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 21, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 21, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 21, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 21, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 21, 2013 | PRIMARY DOCUMENT | View Document |
| 8-K | Nov. 20, 2013 | 8-K | View Document |
| 10-Q | Nov. 7, 2013 | MDU RESOURCES GROUP, INC. 3RD QUARTER 2013 FORM 10-Q | View Document |
| 8-K | Nov. 1, 2013 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| UPLOAD | Oct. 31, 2013 | - | View Document |
| CORRESP | Oct. 16, 2013 | - | View Document |
| 8-K | Oct. 15, 2013 | 8-K | View Document |
| CORRESP | Sept. 13, 2013 | - | View Document |
| CORRESP | Sept. 9, 2013 | - | View Document |
| UPLOAD | Aug. 23, 2013 | - | View Document |
| 3 | Aug. 9, 2013 | PRIMARY DOCUMENT | View Document |
| 3 | Aug. 9, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | Aug. 9, 2013 | PRIMARY DOCUMENT | View Document |
| 3/A | Aug. 7, 2013 | PRIMARY DOCUMENT | View Document |
| 10-Q | Aug. 7, 2013 | 10-Q | View Document |
| CORRESP | Aug. 6, 2013 | - | View Document |
| 8-K | Aug. 1, 2013 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | July 26, 2013 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| CORRESP | July 24, 2013 | - | View Document |
| UPLOAD | July 11, 2013 | - | View Document |
| 4 | June 27, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | June 24, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | June 21, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | June 18, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | June 18, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | June 17, 2013 | PRIMARY DOCUMENT | View Document |
| CORRESP | June 17, 2013 | - | View Document |
| 11-K | June 14, 2013 | MDU RESOURCES GROUP, INC. FORM 11-K | View Document |
| 4 | June 14, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | June 13, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | June 12, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | June 10, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | June 10, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | June 7, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | June 6, 2013 | PRIMARY DOCUMENT | View Document |
| 3 | June 5, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | June 5, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | June 4, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | May 24, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | May 23, 2013 | PRIMARY DOCUMENT | View Document |
| 3 | May 22, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | May 22, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | May 21, 2013 | PRIMARY DOCUMENT | View Document |
| 424B5 | May 20, 2013 | 424B5 | View Document |
| 3 | May 20, 2013 | PRIMARY DOCUMENT | View Document |
| 8-K | May 20, 2013 | 8-K | View Document |
| 4 | May 20, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | May 17, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | May 16, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | May 15, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | May 13, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | May 13, 2013 | PRIMARY DOCUMENT | View Document |
| CORRESP | May 13, 2013 | - | View Document |
| 4 | May 10, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | May 9, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | May 8, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | May 8, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | May 8, 2013 | PRIMARY DOCUMENT | View Document |
| 10-Q | May 7, 2013 | MDU RESOURCES GROUP, INC. 1ST QUARTER 2013 FORM 10-Q | View Document |
| 4 | May 7, 2013 | PRIMARY DOCUMENT | View Document |
| 8-K | May 6, 2013 | MDU RESOURCES GROUP, INC. FORM 8-K ITEM 1.04 | View Document |
| 8-K | May 1, 2013 | 8-K | View Document |
| 8-K | April 25, 2013 | 8-K | View Document |
| CORRESP | April 17, 2013 | - | View Document |
| UPLOAD | April 15, 2013 | - | View Document |
| 4 | March 29, 2013 | PRIMARY DOCUMENT | View Document |
| ARS | March 14, 2013 | AUTO-GENERATED PAPER DOCUMENT | View Document |
| DEF 14A | March 13, 2013 | DEFINITIVE PROXY STATEMENT | View Document |
| 8-K | March 7, 2013 | 8-K | View Document |
| 10-K | Feb. 28, 2013 | MDU RESOURCES GROUP, INC. 2012 FORM 10-K | View Document |
| SC 13G/A | Feb. 14, 2013 | SCHEDULE 13G/A - 12/31/2012 | View Document |
| SC 13G | Feb. 13, 2013 | - | View Document |
| SC 13G | Feb. 12, 2013 | - | View Document |
| 8-K | Feb. 11, 2013 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| SC 13G/A | Feb. 7, 2013 | MDU AS OF 12/31/2012 | View Document |
| 8-K | Feb. 5, 2013 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| SC 13G/A | Feb. 5, 2013 | - | View Document |
| 5 | Jan. 8, 2013 | PRIMARY DOCUMENT | View Document |
| 3 | Jan. 8, 2013 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 31, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 10, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 10, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 10, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 30, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2012 | PRIMARY DOCUMENT | View Document |
| 8-K | Nov. 20, 2012 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K/A | Nov. 20, 2012 | MDU RESOURCES GROUP, INC. FORM 8-K/A | View Document |
| 4 | Nov. 20, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 20, 2012 | PRIMARY DOCUMENT | View Document |
| 10-Q | Nov. 7, 2012 | MDU RESOURCES GROUP, INC. 3RD QUARTER 2012 FORM 10-Q | View Document |
| 8-K | Nov. 1, 2012 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | Oct. 15, 2012 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | Sept. 28, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | Aug. 31, 2012 | PRIMARY DOCUMENT | View Document |
| 8-K | Aug. 21, 2012 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 10-Q | Aug. 7, 2012 | MDU RESOURCES GROUP, INC. 2ND QUARTER 2012 FORM 10-Q | View Document |
| 8-K | Aug. 2, 2012 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | June 29, 2012 | PRIMARY DOCUMENT | View Document |
| 11-K | June 14, 2012 | MDU RESOURCES GROUP, INC. FORM 11-K | View Document |
| 4 | May 30, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | May 29, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | May 25, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | May 25, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | May 24, 2012 | PRIMARY DOCUMENT | View Document |
| 10-Q | May 4, 2012 | MDU RESOURCES GROUP, INC. 1ST QUARTER FORM 10-Q | View Document |
| 8-K | May 1, 2012 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | April 27, 2012 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | April 18, 2012 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | April 12, 2012 | PRIMARY DOCUMENT | View Document |
| ARS | March 9, 2012 | AUTO-GENERATED PAPER DOCUMENT | View Document |
| DEF 14A | March 9, 2012 | DEFINITIVE PROXY STATEMENT | View Document |
| 8-K | March 6, 2012 | 8-K | View Document |
| 4 | March 1, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 27, 2012 | PRIMARY DOCUMENT | View Document |
| 10-K | Feb. 24, 2012 | MDU RESOURCES GROUP, INC. 2011 FORM 10-K | View Document |
| 4 | Feb. 24, 2012 | PRIMARY DOCUMENT | View Document |
| 4 | Feb. 21, 2012 | PRIMARY DOCUMENT | View Document |
| SC 13G | Feb. 14, 2012 | MDU AS OF 12/31/2011 | View Document |
| SC 13G/A | Feb. 14, 2012 | 13G/A - AS OF 12/31/11 | View Document |
| SC 13G/A | Feb. 13, 2012 | - | View Document |
| 5 | Feb. 3, 2012 | PRIMARY DOCUMENT | View Document |
| 8-K | Feb. 2, 2012 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | Jan. 3, 2012 | PRIMARY DOCUMENT | View Document |
| 8-K | Dec. 21, 2011 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| S-8 POS | Dec. 16, 2011 | S-8 POS | View Document |
| S-8 POS | Dec. 16, 2011 | S-8 POS | View Document |
| 4 | Dec. 12, 2011 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 12, 2011 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 12, 2011 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2011 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2011 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2011 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2011 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2011 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2011 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2011 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2011 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2011 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 22, 2011 | PRIMARY DOCUMENT | View Document |
| 8-K | Nov. 21, 2011 | 8-K | View Document |
| S-3ASR | Nov. 18, 2011 | S-3ASR | View Document |
| 4 | Nov. 15, 2011 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 14, 2011 | PRIMARY DOCUMENT | View Document |
| 10-Q | Nov. 4, 2011 | MDU RESOURCES GROUP, INC. 3RD QUARTER 2011 FORM 10-Q | View Document |
| 8-K | Nov. 1, 2011 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | Oct. 17, 2011 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| UPLOAD | Oct. 3, 2011 | - | View Document |
| 4 | Sept. 30, 2011 | PRIMARY DOCUMENT | View Document |
| CORRESP | Sept. 29, 2011 | - | View Document |
| CORRESP | Sept. 2, 2011 | - | View Document |
| UPLOAD | Aug. 31, 2011 | - | View Document |
| 10-Q | Aug. 5, 2011 | MDU RESOURCES GROUP, INC. 2ND QUARTER 2011 FORM 10-Q | View Document |
| 8-K | Aug. 2, 2011 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | June 30, 2011 | PRIMARY DOCUMENT | View Document |
| 8-K | June 27, 2011 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 11-K | June 14, 2011 | MDU RESOURCES GROUP, INC. FORM 11-K | View Document |
| 8-K | May 27, 2011 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | May 25, 2011 | FORM 4 | View Document |
| S-3ASR | May 19, 2011 | MDU RESOURCES GROUP, INC. FORM S-3ASR | View Document |
| 8-K/A | May 13, 2011 | MDU RESOURCES GROUP, INC. FORM 8-K/A | View Document |
| 10-Q | May 5, 2011 | MDU RESOURCES GROUP, INC. 1ST QUARTER 2011 FORM 10-Q | View Document |
| 3 | May 4, 2011 | PRIMARY DOCUMENT | View Document |
| 8-K | May 3, 2011 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | April 29, 2011 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | April 27, 2011 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | April 4, 2011 | PRIMARY DOCUMENT | View Document |
| DEF 14A | March 11, 2011 | DEFINITIVE PROXY STATEMENT | View Document |
| ARS | March 11, 2011 | AUTO-GENERATED PAPER DOCUMENT | View Document |
| 4 | Feb. 24, 2011 | PRIMARY DOCUMENT | View Document |
| 10-K | Feb. 23, 2011 | MDU RESOURCES GROUP, INC. FORM 10-K FOR PERIOD ENDED 12/31/2010 | View Document |
| 8-K | Feb. 22, 2011 | 8-K | View Document |
| SC 13G/A | Feb. 11, 2011 | 13G/A FILING AS OF 12/31/10 | View Document |
| 4 | Feb. 11, 2011 | PRIMARY DOCUMENT | View Document |
| 8-K | Feb. 3, 2011 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| SC 13G/A | Feb. 2, 2011 | - | View Document |
| NO ACT | Jan. 13, 2011 | AUTO-GENERATED PAPER DOCUMENT | View Document |
| 8-K | Jan. 12, 2011 | 8K | View Document |
| 4 | Jan. 3, 2011 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 8, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 8, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 8, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 8, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 1, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | Dec. 1, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | Nov. 16, 2010 | PRIMARY DOCUMENT | View Document |
| 8-K | Nov. 16, 2010 | 8-K | View Document |
| 4 | Nov. 8, 2010 | PRIMARY DOCUMENT | View Document |
| 10-Q | Nov. 3, 2010 | MDU RESOURCES GROUP, INC. 3RD QUARTER 2010 FORM 10-Q | View Document |
| 8-K | Oct. 28, 2010 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-K | Oct. 21, 2010 | MDU RESOURCES GROUP, INC. FORM 8K | View Document |
| 4 | Sept. 30, 2010 | PRIMARY DOCUMENT | View Document |
| 8-K | Aug. 17, 2010 | 8-K | View Document |
| 10-Q | Aug. 6, 2010 | MDU RESOURCES GROUP, INC. 2ND QUARTER 2010 FORM 10-Q | View Document |
| 8-K | Aug. 3, 2010 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 4 | June 30, 2010 | PRIMARY DOCUMENT | View Document |
| 8-K | June 18, 2010 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 11-K | June 17, 2010 | MDU RESOURCES GROUP, INC. 2009 FORM 11-K | View Document |
| 4 | May 26, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | May 24, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | May 24, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | May 18, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | May 18, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | May 18, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | May 18, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | May 18, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | May 18, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | May 18, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | May 18, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | May 18, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | May 10, 2010 | PRIMARY DOCUMENT | View Document |
| 4 | May 7, 2010 | PRIMARY DOCUMENT | View Document |
| 10-Q | May 5, 2010 | MDU RESOURCES GROUP, INC. 1ST QUARTER 2010 FORM 10-Q | View Document |
| S-8 POS | April 30, 2010 | S-8 POS | View Document |
| 8-K | April 30, 2010 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| 8-A12B/A | April 30, 2010 | 8-A12B/A | View Document |
| 8-K | April 30, 2010 | MDU RESOURCES GROUP, INC. FORM 8-K | View Document |
| AW | April 30, 2010 | AW | View Document |
| POS AM | April 19, 2010 | - | View Document |
| DEFA14A | April 8, 2010 | DEFA14A | View Document |
| 8-K | April 8, 2010 | 8-K | View Document |