Company Names, identifiers, and filing context for this profile. 1 identity field
Company location
Sioux Falls, SD
SEC filing record 1 source field available
Fiscal year end
31 December
NORTHWESTERN CORP has filed 3,022 SEC EDGAR filings since 14 Feb 1994

SEC filing history

Showing 426-450 of 1,000 matching filings.

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25
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18
4

FORM 4

Filing date
28 Feb 2018
Reporting date
27 Feb 2018
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4

FORM 4

Filing date
28 Feb 2018
Reporting date
27 Feb 2018
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4

FORM 4

Filing date
28 Feb 2018
Reporting date
27 Feb 2018
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4

FORM 4

Filing date
26 Feb 2018
Reporting date
22 Feb 2018
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4

FORM 4

Filing date
26 Feb 2018
Reporting date
22 Feb 2018
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4

FORM 4

Filing date
26 Feb 2018
Reporting date
22 Feb 2018
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4

FORM 4

Filing date
26 Feb 2018
Reporting date
22 Feb 2018
SEC evidence
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4

FORM 4

Filing date
26 Feb 2018
Reporting date
22 Feb 2018
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4

FORM 4

Filing date
26 Feb 2018
Reporting date
22 Feb 2018
SEC evidence
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4

FORM 4

Filing date
26 Feb 2018
Reporting date
22 Feb 2018
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4

FORM 4

Filing date
26 Feb 2018
Reporting date
22 Feb 2018
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4

FORM 4

Filing date
16 Feb 2018
Reporting date
15 Feb 2018
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8-K File 001-10499

8-K 2018 LTIP AWARDS

Filing date
16 Feb 2018
Reporting date
12 Feb 2018
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8-K File 001-10499

8-K

Filing date
15 Feb 2018
Reporting date
15 Feb 2018
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424B5 File 333-223019

424B5

Filing date
15 Feb 2018
Reporting date
Not listed
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8-K File 001-10499

8-K DRAPER RESIGNATION

Filing date
15 Feb 2018
Reporting date
12 Feb 2018
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S-3ASR File 333-223019

S-3ASR 2018

Filing date
13 Feb 2018
Reporting date
Not listed
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8-K File 001-10499

8-K Q4 2017 EARNINGS

Filing date
13 Feb 2018
Reporting date
12 Feb 2018
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10-K File 001-10499

FORM 10-K 2017

Filing date
13 Feb 2018
Reporting date
31 Dec 2017
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SC 13G/A File 005-36015

SC 13G/A filing

Filing date
09 Feb 2018
Reporting date
Not listed
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4

FORM 4

Filing date
05 Feb 2018
Reporting date
02 Feb 2018
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4

FORM 4

Filing date
05 Feb 2018
Reporting date
02 Feb 2018
SEC evidence
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4

FORM 4

Filing date
05 Feb 2018
Reporting date
02 Feb 2018
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
05 Feb 2018
Reporting date
02 Feb 2018
SEC evidence
Open document Open filing
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Verify source filing
4

FORM 4

Filing date
05 Feb 2018
Reporting date
02 Feb 2018
SEC evidence
Open document Open filing
Next action
Verify source filing
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