687 filings
Page 4 of 35
CORRESP
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26 Apr 22
Correspondence with SEC
12:00am
UPLOAD
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14 Apr 22
Letter from SEC
12:00am
DEFA14A
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25 Mar 22
Additional proxy soliciting materials
10:35am
8-K
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9 Feb 22
MDU Resources Reports 2021 Earnings, Initiates 2022 Guidance
5:11pm
8-K
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10 Jan 22
Mine Safety - Reporting of Shutdowns and Patterns of Violations
5:14pm
8-K
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23 Nov 21
MDU Resources Announces Five-Year Capital Investment Plan
8:37am
8-K
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3 Nov 21
MDU Resources Reports Third Quarter Earnings, Adjusts Guidance
4:57pm
8-K
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16 Aug 21
Mine Safety - Reporting of Shutdowns and Patterns of Violations
9:47am
8-K
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4 Aug 21
MDU Resources Reports Second Quarter Earnings; Affirms Earnings Guidance
5:05pm
SD
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27 May 21
Conflict minerals disclosure
10:34am
8-K
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12 May 21
Submission of Matters to a Vote of Security Holders
4:06pm
8-K
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6 May 21
MDU Resources Doubles First Quarter Earnings, Narrows EPS Guidance
12:00am
DEFA14A
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26 Mar 21
Additional proxy soliciting materials
11:30am
8-K
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12 Mar 21
Departure of Directors or Certain Officers
2:33pm