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Filing Detail
Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000073088-22-000019
Filing Date
2022-02-11
Accepted
2022-02-10 20:15:32
Documents
127
Period of Report
2021-12-31

Document Format Files

Seq Description Document Type Size
1 10-K nwe-20211231.htm   iXBRL 10-K 4011689
2 EX-4.5 DESCRIPTION OF CAPITAL STOCK exhibit45descriptionofcapi.htm EX-4.5 21383
3 EX-21 SUBSIDIARIES 10-K 2021 exhibit21subsidiaries2021.htm EX-21 6160
4 EX-23 AUDITOR CONSENT exhibit23consent10k2021.htm EX-23 3174
5 EX-31.1 CERTIFICATION OF CHIEF EXECUTIVE OFFICER exhibit311certification2021.htm EX-31.1 10442
6 EX-31.2 CERTIFICATION OF CHIEF FINANCIAL OFFICER exhibit312certification2021.htm EX-31.2 10210
7 EX-32.1 CERTIFICATION OF ROBERT C. ROWE PURSUANT TO SECTION 906 exhibit321certification2021.htm EX-32.1 4825
8 EX-32.2 CERTIFICATION OF CRYSTAL D. LAIL PURSUANT TO SECTION 906 exhibit322certification2021.htm EX-32.2 4863
14 nwe-20211231_g1.jpg GRAPHIC 123972
15 nwe-20211231_g2.jpg GRAPHIC 79530
16 nwe-20211231_g3.jpg GRAPHIC 119169
17 nwe-20211231_g4.jpg GRAPHIC 138231
18 nwe-20211231_g5.jpg GRAPHIC 90928
19 nwe-20211231_g6.jpg GRAPHIC 51065
20 nwe-20211231_g7.jpg GRAPHIC 104340
  Complete submission text file 0000073088-22-000019.txt   19543800

Data Files

Seq Description Document Type Size
9 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT nwe-20211231.xsd EX-101.SCH 97709
10 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT nwe-20211231_cal.xml EX-101.CAL 143053
11 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT nwe-20211231_def.xml EX-101.DEF 717391
12 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT nwe-20211231_lab.xml EX-101.LAB 1195560
13 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT nwe-20211231_pre.xml EX-101.PRE 877816
121 EXTRACTED XBRL INSTANCE DOCUMENT nwe-20211231_htm.xml XML 3814152
Mailing Address 3010 W 69TH STREET SIOUX FALLS SD 57108
Business Address 3010 W 69TH STREET SIOUX FALLS SD 57108 6059782908
NORTHWESTERN CORP (Filer) CIK: 0000073088 (see all company filings)

IRS No.: 460172280 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-10499 | Film No.: 22616175
SIC: 4931 Electric & Other Services Combined