NORTHWESTERN CORP reports

Company location: Sioux Falls, SD
Fiscal year end: 31 December

NORTHWESTERN CORP has filed 3,022 SEC EDGAR filings since 14 Feb 1994

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SEC filing history

Showing 401-425 of 1,000 matching filings.

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25

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17

4

FORM 4

Filing date: 02 May 2018
Reporting date: 30 Apr 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 02 May 2018
Reporting date: 01 May 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 02 May 2018
Reporting date: 01 May 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-10499

8-K ANNUAL MEETING VOTING RESULTS

Filing date: 30 Apr 2018
Reporting date: 25 Apr 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-10499

8-K EARNINGS RELEASE Q1 2018

Filing date: 25 Apr 2018
Reporting date: 24 Apr 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

10-Q File 001-10499

FORM 10-Q 3.31.18

Filing date: 25 Apr 2018
Reporting date: 31 Mar 2018
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

UPLOAD

UPLOAD filing

Filing date: 18 Apr 2018
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-10499

8-K WEST COAST UTILITIES 2018

Filing date: 21 Mar 2018
Reporting date: 21 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2018
Reporting date: 08 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2018
Reporting date: 08 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2018
Reporting date: 08 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2018
Reporting date: 08 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2018
Reporting date: 08 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2018
Reporting date: 08 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2018
Reporting date: 08 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2018
Reporting date: 08 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

DEFA14A File 001-10499

DEFA14A 2018 ANNUAL MEETING NOTICE

Filing date: 07 Mar 2018
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

DEF 14A File 001-10499

DEF 14A 2018 PROXY STATEMENT

Filing date: 07 Mar 2018
Reporting date: 25 Apr 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 02 Mar 2018
Reporting date: 02 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 01 Mar 2018
Reporting date: 28 Feb 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 28 Feb 2018
Reporting date: 27 Feb 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 28 Feb 2018
Reporting date: 27 Feb 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 28 Feb 2018
Reporting date: 27 Feb 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 28 Feb 2018
Reporting date: 27 Feb 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 28 Feb 2018
Reporting date: 27 Feb 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

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