NORTHWESTERN CORP SEC filing history

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SEC filing history

Showing 901–925 of 1,000 matching filings.

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FORM 4

Filing date: 01 Mar 2013
Reporting date: 01 Mar 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

FORM 4

Filing date: 01 Mar 2013
Reporting date: 01 Mar 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

FORM 4

Filing date: 22 Feb 2013
Reporting date: 21 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

FORM 4

Filing date: 22 Feb 2013
Reporting date: 21 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

FORM 4

Filing date: 22 Feb 2013
Reporting date: 21 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

FORM 4

Filing date: 22 Feb 2013
Reporting date: 21 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

FORM 4

Filing date: 22 Feb 2013
Reporting date: 21 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

FORM 4

Filing date: 22 Feb 2013
Reporting date: 21 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-10499

8-K

Filing date: 19 Feb 2013
Reporting date: 19 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-10499

8-K

Filing date: 19 Feb 2013
Reporting date: 13 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-10499

8-K

Filing date: 14 Feb 2013
Reporting date: 14 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

10-K File 001-10499

10-K

Filing date: 14 Feb 2013
Reporting date: 31 Dec 2012
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

SC 13G File 005-36015

MUNDER 13G FILING FOR NORTHWESTERN CORPORATION

Filing date: 13 Feb 2013
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-36015

NWE AS OF 12/31/12

Filing date: 11 Feb 2013
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-36015

SC 13G/A filing

Filing date: 11 Feb 2013
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

FORM 4

Filing date: 04 Feb 2013
Reporting date: 01 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

FORM 4

Filing date: 04 Feb 2013
Reporting date: 01 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

FORM 4

Filing date: 04 Feb 2013
Reporting date: 01 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

FORM 4

Filing date: 04 Feb 2013
Reporting date: 01 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

FORM 4

Filing date: 04 Feb 2013
Reporting date: 01 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

FORM 4

Filing date: 04 Feb 2013
Reporting date: 01 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

FORM 4

Filing date: 04 Feb 2013
Reporting date: 01 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G File 005-36015

NORTHWESTERN CORPORATION SC 13G

Filing date: 29 Jan 2013
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-36015

SC 13G/A filing

Filing date: 11 Jan 2013
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

FORM 4

Filing date: 02 Jan 2013
Reporting date: 31 Dec 2012
SEC evidence: Open document Open filing
Next action: Verify source filing