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 51-75 of 1,000 matching filings.

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25

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3

4

FORM 4

Filing date: 09 Mar 2023
Reporting date: 07 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 09 Mar 2023
Reporting date: 07 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 09 Mar 2023
Reporting date: 07 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 09 Mar 2023
Reporting date: 07 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 09 Mar 2023
Reporting date: 07 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 09 Mar 2023
Reporting date: 07 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 09 Mar 2023
Reporting date: 07 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-36015

SC 13G/A filing

Filing date: 08 Mar 2023
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 07 Mar 2023
Reporting date: 03 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 07 Mar 2023
Reporting date: 03 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 07 Mar 2023
Reporting date: 03 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 07 Mar 2023
Reporting date: 03 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 07 Mar 2023
Reporting date: 03 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 07 Mar 2023
Reporting date: 03 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 07 Mar 2023
Reporting date: 03 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 07 Mar 2023
Reporting date: 03 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 07 Mar 2023
Reporting date: 06 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-10499

8-K

Filing date: 27 Feb 2023
Reporting date: 27 Feb 2023
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

FORM 4

Filing date: 23 Feb 2023
Reporting date: 23 Feb 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-10499

8-K

Filing date: 23 Feb 2023
Reporting date: 17 Feb 2023
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-10499

8-K

Filing date: 17 Feb 2023
Reporting date: 16 Feb 2023
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

10-K File 001-10499

10-K

Filing date: 17 Feb 2023
Reporting date: 31 Dec 2022
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

SC 13G/A File 005-36015

SC 13G/A filing

Filing date: 14 Feb 2023
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-36015

SCHEDULE 13G/A

Filing date: 09 Feb 2023
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 date: 08 Feb 2023
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

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