MDU RESOURCES GROUP INC reports

Company location: Bismarck, ND
Fiscal year end: 31 December

MDU RESOURCES GROUP INC has filed 1,792 SEC EDGAR filings since 11 Feb 1994

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SEC filing history

Showing 926-950 of 1,000 matching filings.

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25

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38

4

PRIMARY DOCUMENT

Filing date: 27 Feb 2012
Reporting date: 24 Feb 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 24 Feb 2012
Reporting date: 23 Feb 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

10-K File 001-03480

MDU RESOURCES GROUP, INC. 2011 FORM 10-K

Filing date: 24 Feb 2012
Reporting date: 31 Dec 2011
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 21 Feb 2012
Reporting date: 16 Feb 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-35797

13G/A - AS OF 12/31/11

Filing date: 14 Feb 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G File 005-35797

MDU AS OF 12/31/2011

Filing date: 14 Feb 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-35797

SC 13G/A filing

Filing date: 13 Feb 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

5

PRIMARY DOCUMENT

Filing date: 03 Feb 2012
Reporting date: 31 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-03480

MDU RESOURCES GROUP, INC. FORM 8-K

Filing date: 02 Feb 2012
Reporting date: 31 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 03 Jan 2012
Reporting date: 31 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-03480

MDU RESOURCES GROUP, INC. FORM 8-K

Filing date: 21 Dec 2011
Reporting date: 19 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

S-8 POS File 333-84844

S-8 POS

Filing date: 16 Dec 2011
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

S-8 POS File 333-112035

S-8 POS

Filing date: 16 Dec 2011
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 12 Dec 2011
Reporting date: 09 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 12 Dec 2011
Reporting date: 09 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 12 Dec 2011
Reporting date: 09 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2011
Reporting date: 21 Nov 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2011
Reporting date: 21 Nov 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2011
Reporting date: 21 Nov 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2011
Reporting date: 21 Nov 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2011
Reporting date: 21 Nov 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2011
Reporting date: 21 Nov 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2011
Reporting date: 21 Nov 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2011
Reporting date: 21 Nov 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 22 Nov 2011
Reporting date: 21 Nov 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

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