# Filing Detail

Form 8-K - Current report:
SEC Accession No. 0001993004-26-000038
Filing Date
2026-05-27
Accepted
2026-05-27 07:05:31
Documents
65
Period of Report
2026-05-27
Items
Item 7.01: Regulation FD Disclosure
Item 9.01: Financial Statements and Exhibits

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 8-K | nwe-20260527.htm iXBRL | 8-K | 29889
2 | EX-99.1 INVESTOR CONF PRES 2026 | exh991invconfpres26.htm | EX-99.1 | 69202
6 |  | exh991invconfpres26001.jpg | GRAPHIC | 179344
7 |  | exh991invconfpres26002.jpg | GRAPHIC | 278569
8 |  | exh991invconfpres26003.jpg | GRAPHIC | 112937
9 |  | exh991invconfpres26004.jpg | GRAPHIC | 29432
10 |  | exh991invconfpres26005.jpg | GRAPHIC | 168155
11 |  | exh991invconfpres26006.jpg | GRAPHIC | 103997
12 |  | exh991invconfpres26007.jpg | GRAPHIC | 108796
13 |  | exh991invconfpres26008.jpg | GRAPHIC | 94049
14 |  | exh991invconfpres26009.jpg | GRAPHIC | 135714
15 |  | exh991invconfpres26010.jpg | GRAPHIC | 146760
16 |  | exh991invconfpres26011.jpg | GRAPHIC | 123121
17 |  | exh991invconfpres26012.jpg | GRAPHIC | 146163
18 |  | exh991invconfpres26013.jpg | GRAPHIC | 138902
19 |  | exh991invconfpres26014.jpg | GRAPHIC | 157280
20 |  | exh991invconfpres26015.jpg | GRAPHIC | 127948
21 |  | exh991invconfpres26016.jpg | GRAPHIC | 39386
22 |  | exh991invconfpres26017.jpg | GRAPHIC | 148337
23 |  | exh991invconfpres26018.jpg | GRAPHIC | 146580
24 |  | exh991invconfpres26019.jpg | GRAPHIC | 119812
25 |  | exh991invconfpres26020.jpg | GRAPHIC | 131228
26 |  | exh991invconfpres26021.jpg | GRAPHIC | 109225
27 |  | exh991invconfpres26022.jpg | GRAPHIC | 118523
28 |  | exh991invconfpres26023.jpg | GRAPHIC | 128390
29 |  | exh991invconfpres26024.jpg | GRAPHIC | 32100
30 |  | exh991invconfpres26025.jpg | GRAPHIC | 105564
31 |  | exh991invconfpres26026.jpg | GRAPHIC | 139694
32 |  | exh991invconfpres26027.jpg | GRAPHIC | 174764
33 |  | exh991invconfpres26028.jpg | GRAPHIC | 119175
34 |  | exh991invconfpres26029.jpg | GRAPHIC | 148828
35 |  | exh991invconfpres26030.jpg | GRAPHIC | 183724
36 |  | exh991invconfpres26031.jpg | GRAPHIC | 161787
37 |  | exh991invconfpres26032.jpg | GRAPHIC | 149085
38 |  | exh991invconfpres26033.jpg | GRAPHIC | 137591
39 |  | exh991invconfpres26034.jpg | GRAPHIC | 29661
40 |  | exh991invconfpres26035.jpg | GRAPHIC | 115871
41 |  | exh991invconfpres26036.jpg | GRAPHIC | 173627
42 |  | exh991invconfpres26037.jpg | GRAPHIC | 119028
43 |  | exh991invconfpres26038.jpg | GRAPHIC | 146515
44 |  | exh991invconfpres26039.jpg | GRAPHIC | 141120
45 |  | exh991invconfpres26040.jpg | GRAPHIC | 121876
46 |  | exh991invconfpres26041.jpg | GRAPHIC | 152749
47 |  | exh991invconfpres26042.jpg | GRAPHIC | 103704
48 |  | exh991invconfpres26043.jpg | GRAPHIC | 131489
49 |  | exh991invconfpres26044.jpg | GRAPHIC | 127860
50 |  | exh991invconfpres26045.jpg | GRAPHIC | 133254
51 |  | exh991invconfpres26046.jpg | GRAPHIC | 127521
52 |  | exh991invconfpres26047.jpg | GRAPHIC | 114224
53 |  | exh991invconfpres26048.jpg | GRAPHIC | 185855
54 |  | exh991invconfpres26049.jpg | GRAPHIC | 132117
55 |  | exh991invconfpres26050.jpg | GRAPHIC | 205041
56 |  | exh991invconfpres26051.jpg | GRAPHIC | 278678
57 |  | exh991invconfpres26052.jpg | GRAPHIC | 51264
58 |  | nwe-20260527_g1.jpg | GRAPHIC | 77538
| Complete submission text file | 0001993004-26-000038.txt |  | 9999147

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
3 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | nwe-20260527.xsd | EX-101.SCH | 1909
4 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | nwe-20260527_lab.xml | EX-101.LAB | 21885
5 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | nwe-20260527_pre.xml | EX-101.PRE | 12622
68 | EXTRACTED XBRL INSTANCE DOCUMENT | nwe-20260527_htm.xml | XML | 2697

Mailing Address 3010 WEST 69TH STREET SIOUX FALLS SD 57108
Business Address 3010 WEST 69TH STREET SIOUX FALLS SD 57108 605-978-2900
NorthWestern Energy Group, Inc. (Filer) CIK: 0001993004 (see all company filings)

EIN.: 932020320 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 8-K | Act: 34 | File No.: 000-56598 | Film No.: 261022143
SIC: 4931 Electric & Other Services Combined
(CF Office: 01 Energy & Transportation)