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Filing Detail
Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0000073088-18-000078
Filing Date
2018-03-12
Accepted
2018-03-12 12:49:30
Documents
1
Period of Report
2018-03-08

Document Format Files

Seq Description Document Type Size
1 FORM 4 wf-form4_152087335637871.html 4  
1 FORM 4 wf-form4_152087335637871.xml 4 3944
  Complete submission text file 0000073088-18-000078.txt   5360
Mailing Address 3010 W 69TH STREET SIOUX FALLS SD 57108
Business Address 3010 W 69TH STREET SIOUX FALLS SD 57108 6059782908
NORTHWESTERN CORP (Issuer) CIK: 0000073088 (see all company filings)

IRS No.: 460172280 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 4931 Electric & Other Services Combined

Mailing Address 125 S DAKOTA AVE SIOUX FALLS SD 57104
Business Address
BIRD BRIAN B (Reporting) CIK: 0001271670 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-10499 | Film No.: 18682785