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. CIK#: 0001993004 (see all company filings)

SIC: 4931 - ELECTRIC & OTHER SERVICES COMBINED
State location: SD | State of Inc.: DE | Fiscal Year End: 1231
(CF Office: 01 Energy & Transportation)
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Items 1 - 40  0001993004 Filings RSS Feed
Filings Format Description Filing Date File/Film Number
8-K  Documents   Interactive Data Current report, items 2.02, 7.01, and 9.01
Acc-no: 0001993004-25-000086 (34 Act)  Size: 11 MB
2025-04-30 000-56598
25891212
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001993004-25-000084 (34 Act)  Size: 5 MB
2025-04-30 000-56598
25889997
8-K  Documents   Interactive Data Current report, items 7.01 and 9.01
Acc-no: 0001993004-25-000081 (34 Act)  Size: 8 MB
2025-04-10 000-56598
25827464
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000079 Size: 4 KB
2025-04-07
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000077 Size: 4 KB
2025-04-07
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000075 Size: 4 KB
2025-04-07
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000073 Size: 4 KB
2025-04-07
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000071 Size: 4 KB
2025-04-07
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000069 Size: 4 KB
2025-04-07
SCHEDULE 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001060021-25-000060 (34 Act)  Size: 11 KB
2025-04-03 005-94291
25808887
8-K  Documents   Interactive Data Current report, items 1.01, 2.03, and 9.01
Acc-no: 0001993004-25-000067 (34 Act)  Size: 6 MB
2025-03-27 000-56598
25777349
8-K  Documents   Interactive Data Current report, items 7.01 and 9.01
Acc-no: 0001993004-25-000065 (34 Act)  Size: 8 MB
2025-03-25 000-56598
25766263
ARS  Documents Annual Report to Security Holders
Acc-no: 0001993004-25-000062 (34 Act)  Size: 30 MB
2025-03-12 000-56598
25731050
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0001993004-25-000061 (34 Act)  Size: 1 MB
2025-03-12 000-56598
25731043
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001993004-25-000060 (34 Act)  Size: 29 MB
2025-03-12 000-56598
25731039
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000051 Size: 5 KB
2025-03-10
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000049 Size: 5 KB
2025-03-10
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000047 Size: 6 KB
2025-03-10
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000045 Size: 6 KB
2025-03-05
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000043 Size: 6 KB
2025-03-05
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000041 Size: 6 KB
2025-03-05
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000039 Size: 6 KB
2025-03-05
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000037 Size: 6 KB
2025-03-05
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000034 Size: 6 KB
2025-03-05
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000032 Size: 6 KB
2025-03-05
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000029 Size: 6 KB
2025-03-05
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000027 Size: 6 KB
2025-03-05
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000025 Size: 4 KB
2025-02-26
144  Documents Report of proposed sale of securities
Acc-no: 0001973379-25-000048 (33 Act)  Size: 4 KB
2025-02-25 000-56598
25662434
SCHEDULE 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000052388-25-000053 (34 Act)  Size: 11 KB
2025-02-14 005-94291
25623533
8-K  Documents   Interactive Data Current report, items 2.02, 7.01, and 9.01
Acc-no: 0001993004-25-000023 (34 Act)  Size: 10 MB
2025-02-13 000-56598
25617621
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0001993004-25-000021 (34 Act)  Size: 19 MB
2025-02-13 000-56598
25616581
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000016 Size: 4 KB
2025-02-06
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000014 Size: 5 KB
2025-02-06
SCHEDULE 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0002012383-25-001535 (34 Act)  Size: 12 KB
2025-02-05 005-94291
25594607
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000012 Size: 4 KB
2025-01-06
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000010 Size: 4 KB
2025-01-06
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000008 Size: 4 KB
2025-01-06
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000006 Size: 4 KB
2025-01-06
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001993004-25-000004 Size: 4 KB
2025-01-06