NorthWestern Energy Group, Inc.

Symbol
NWE on Nasdaq
Entity
Company
Business address
3010 West 69 Th Street, 57108 Sioux Falls, SD
Phone
605-978-2900
State of incorporation
DE
Fiscal year end
December 31
Category
Large accelerated filer
All SEC filings
View on sec.gov
Get insider transactions for this issuer
NorthWestern Energy Group, Inc. has filed 224 SEC EDGAR filings since 10/2/2023

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
8-K Open Document | Data Open Filing 8-K Nov 13, 2025 Nov 7, 2025 000-56598
425 Open Document Open Filing 425 MT PBS IMPACT TRANSCRIPT EXCERPTS Nov 13, 2025 000-56598
8-K Open Document | Data Open Filing 8-K Nov 10, 2025 Nov 10, 2025 000-56598
425 Open Document Open Filing 425 Nov 10, 2025 000-56598
4 Open Document Open Filing FORM 4 Nov 5, 2025 Nov 4, 2025
4 Open Document Open Filing FORM 4 Nov 5, 2025 Nov 4, 2025
8-K Open Document | Data Open Filing 8-K Oct 31, 2025 Oct 27, 2025 000-56598
8-K Open Document | Data Open Filing 8-K Oct 30, 2025 Oct 29, 2025 000-56598
10-Q Open Document | Data Open Filing 10-Q Oct 30, 2025 Sep 30, 2025 000-56598
425 Open Document Open Filing 425 Oct 28, 2025 000-56598
425 Open Document Open Filing 425 Oct 28, 2025 000-56598
425 Open Document Open Filing 425 PRESS RELEASE MT MERGER APPROVAL FILING Oct 21, 2025 000-56598
4 Open Document Open Filing FORM 4 Oct 7, 2025 Oct 6, 2025
4 Open Document Open Filing FORM 4 Oct 7, 2025 Oct 6, 2025
4 Open Document Open Filing FORM 4 Oct 7, 2025 Oct 6, 2025
4 Open Document Open Filing FORM 4 Oct 7, 2025 Oct 6, 2025
4 Open Document Open Filing FORM 4 Oct 7, 2025 Oct 6, 2025
4 Open Document Open Filing FORM 4 Oct 7, 2025 Oct 6, 2025
8-K Open Document | Data Open Filing 8-K Oct 3, 2025 Sep 29, 2025 000-56598
425 Open Document Open Filing 425 VOICES OF MT TRANSCRIPT Sep 22, 2025 000-56598
425 Open Document Open Filing 425 B OF A INTERVIEW TRANSCRIPT BIRD Sep 11, 2025 000-56598
8-K Open Document | Data Open Filing 8-K Sep 3, 2025 Sep 3, 2025 000-56598
425 Open Document Open Filing 425 HH TRANSCRIPT Aug 28, 2025 000-56598
425 Open Document Open Filing 425 JH LINKEDIN POST Aug 20, 2025 000-56598
425 Open Document Open Filing 425 Aug 19, 2025 000-56598
425 Open Document Open Filing 425 Aug 19, 2025 000-56598
425 Open Document Open Filing 425 Aug 19, 2025 000-56598
425 Open Document Open Filing 425 Aug 19, 2025 000-56598
425 Open Document Open Filing 425 Aug 19, 2025 000-56598
425 Open Document Open Filing 425 Aug 19, 2025 000-56598
425 Open Document Open Filing 425 Aug 19, 2025 000-56598
425 Open Document Open Filing 425 Aug 19, 2025 000-56598
425 Open Document Open Filing 425 Aug 19, 2025 000-56598
425 Open Document Open Filing 425 Aug 19, 2025 000-56598
425 Open Document Open Filing 425 Aug 19, 2025 000-56598
425 Open Document Open Filing 425 NWE SUPPLIER BUSINESS PARTNER Aug 19, 2025 000-56598
425 Open Document Open Filing 425 Aug 19, 2025 000-56598
425 Open Document Open Filing 425 REGULATOR ELECTED OFFICIAL Aug 19, 2025 000-56598
425 Open Document Open Filing 425 Aug 19, 2025 000-56598
425 Open Document Open Filing 425 Aug 19, 2025 000-56598
425 Open Document Open Filing 425 NWE PEOPLE LEADER TOOLKIT Aug 19, 2025 000-56598
425 Open Document Open Filing 425 NWE PEOPLE LEADER COVER EMAIL Aug 19, 2025 000-56598
425 Open Document Open Filing 425 Aug 19, 2025 000-56598
425 Open Document Open Filing 425 NWE LEADER COMM TOOLKIT Aug 19, 2025 000-56598
425 Open Document Open Filing 425 NWE EMPLOYEE FAQ Aug 19, 2025 000-56598
425 Open Document Open Filing 425 NWE CUSTOMER EMAIL Aug 19, 2025 000-56598
425 Open Document Open Filing 425 ANALYST INVESTOR COURTESY Aug 19, 2025 000-56598
425 Open Document Open Filing 425 NWE EMPLOYEE EMAIL Aug 19, 2025 000-56598
8-K Open Document | Data Open Filing 8-K Aug 19, 2025 Aug 18, 2025 000-56598
8-K Open Document | Data Open Filing 8-K Aug 19, 2025 Aug 19, 2025 000-56598
SCHEDULE 13G/A Open Document Open Filing Aug 14, 2025 005-94291
4 Open Document Open Filing FORM 4 Aug 4, 2025 Aug 1, 2025
4 Open Document Open Filing FORM 4 Aug 4, 2025 Aug 1, 2025
8-K Open Document | Data Open Filing 8-K Jul 31, 2025 Jul 30, 2025 000-56598
10-Q Open Document | Data Open Filing 10-Q Jul 31, 2025 Jun 30, 2025 000-56598
4 Open Document Open Filing FORM 4 Jul 9, 2025 Jul 1, 2025
4 Open Document Open Filing FORM 4 Jul 7, 2025 Jul 1, 2025
4 Open Document Open Filing FORM 4 Jul 7, 2025 Jul 1, 2025
4 Open Document Open Filing FORM 4 Jul 7, 2025 Jul 1, 2025
4 Open Document Open Filing FORM 4 Jul 7, 2025 Jul 1, 2025
4 Open Document Open Filing FORM 4 Jul 7, 2025 Jul 1, 2025
8-K Open Document | Data Open Filing 8-K Jun 5, 2025 Jun 5, 2025 000-56598
8-K Open Document | Data Open Filing 8-K May 28, 2025 May 28, 2025 000-56598
8-K Open Document | Data Open Filing 8-K May 19, 2025 May 19, 2025 000-56598
8-K Open Document | Data Open Filing 8-K May 7, 2025 May 1, 2025 000-56598
4 Open Document Open Filing FORM 4 May 6, 2025 May 5, 2025
4 Open Document Open Filing FORM 4 May 5, 2025 May 2, 2025
8-K Open Document | Data Open Filing 8-K May 5, 2025 Apr 30, 2025 000-56598
4 Open Document Open Filing FORM 4 May 2, 2025 May 2, 2025
144 Open Document Open Filing May 2, 2025 000-56598
8-K Open Document | Data Open Filing 8-K Apr 30, 2025 Apr 29, 2025 000-56598
10-Q Open Document | Data Open Filing 10-Q Apr 30, 2025 Mar 31, 2025 000-56598
8-K Open Document | Data Open Filing 8-K Apr 10, 2025 Apr 10, 2025 000-56598
4 Open Document Open Filing FORM 4 Apr 7, 2025 Apr 4, 2025
4 Open Document Open Filing FORM 4 Apr 7, 2025 Apr 4, 2025
4 Open Document Open Filing FORM 4 Apr 7, 2025 Apr 4, 2025
4 Open Document Open Filing FORM 4 Apr 7, 2025 Apr 4, 2025
4 Open Document Open Filing FORM 4 Apr 7, 2025 Apr 4, 2025
4 Open Document Open Filing FORM 4 Apr 7, 2025 Apr 4, 2025
SCHEDULE 13G/A Open Document Open Filing Apr 3, 2025 005-94291
8-K Open Document | Data Open Filing 8-K Mar 27, 2025 Mar 21, 2025 000-56598
8-K Open Document | Data Open Filing 8-K Mar 25, 2025 Mar 25, 2025 000-56598
ARS Open Document Open Filing ARS NWE ANNUAL REPORT (FILED 2025) Mar 12, 2025 Dec 31, 2024 000-56598
DEFA14A Open Document Open Filing DEFA14A Mar 12, 2025 000-56598
DEF 14A Open Document | Data Open Filing DEF 14A Mar 12, 2025 Apr 30, 2025 000-56598
4 Open Document Open Filing FORM 4 Mar 10, 2025 Mar 7, 2025
4 Open Document Open Filing FORM 4 Mar 10, 2025 Mar 7, 2025
4 Open Document Open Filing FORM 4 Mar 10, 2025 Mar 3, 2025
4 Open Document Open Filing FORM 4 Mar 5, 2025 Mar 3, 2025
4 Open Document Open Filing FORM 4 Mar 5, 2025 Mar 3, 2025
4 Open Document Open Filing FORM 4 Mar 5, 2025 Mar 3, 2025
4 Open Document Open Filing FORM 4 Mar 5, 2025 Mar 3, 2025
4 Open Document Open Filing FORM 4 Mar 5, 2025 Mar 3, 2025
4 Open Document Open Filing FORM 4 Mar 5, 2025 Mar 3, 2025
4 Open Document Open Filing FORM 4 Mar 5, 2025 Mar 3, 2025
4 Open Document Open Filing FORM 4 Mar 5, 2025 Mar 3, 2025
4 Open Document Open Filing FORM 4 Mar 5, 2025 Mar 3, 2025
4 Open Document Open Filing FORM 4 Feb 26, 2025 Feb 25, 2025
144 Open Document Open Filing Feb 25, 2025 000-56598
SCHEDULE 13G/A Open Document Open Filing Feb 14, 2025 005-94291
8-K Open Document | Data Open Filing 8-K Feb 13, 2025 Feb 12, 2025 000-56598
10-K Open Document | Data Open Filing 10-K Feb 13, 2025 Dec 31, 2024 000-56598
4 Open Document Open Filing FORM 4 Feb 6, 2025 Feb 5, 2025
4 Open Document Open Filing FORM 4 Feb 6, 2025 Feb 5, 2025
SCHEDULE 13G/A Open Document Open Filing Feb 5, 2025 005-94291
4 Open Document Open Filing FORM 4 Jan 6, 2025 Jan 6, 2025
4 Open Document Open Filing FORM 4 Jan 6, 2025 Jan 6, 2025
4 Open Document Open Filing FORM 4 Jan 6, 2025 Jan 6, 2025
4 Open Document Open Filing FORM 4 Jan 6, 2025 Jan 6, 2025
4 Open Document Open Filing FORM 4 Jan 6, 2025 Jan 6, 2025
4 Open Document Open Filing FORM 4 Jan 6, 2025 Jan 6, 2025
8-K Open Document | Data Open Filing 8-K Dec 19, 2024 Dec 12, 2024 000-56598
4 Open Document Open Filing FORM 4 Dec 13, 2024 Dec 12, 2024
144 Open Document Open Filing Dec 12, 2024 000-56598
144 Open Document Open Filing Dec 9, 2024 000-56598
4 Open Document Open Filing FORM 4 Dec 9, 2024 Dec 9, 2024
4 Open Document Open Filing FORM 4 Dec 4, 2024 Dec 3, 2024
3 Open Document Open Filing FORM 3 Dec 2, 2024 Dec 1, 2024
8-K Open Document | Data Open Filing 8-K Nov 21, 2024 Nov 20, 2024 000-56598
8-K Open Document | Data Open Filing 8-K Nov 8, 2024 Nov 8, 2024 000-56598
SC 13G/A Open Document Open Filing Nov 8, 2024 005-94291
SC 13G/A Open Document Open Filing SC 13G/A Nov 8, 2024 005-94291
4 Open Document Open Filing FORM 4 Nov 4, 2024 Nov 1, 2024
8-K Open Document | Data Open Filing 8-K Oct 30, 2024 Oct 28, 2024 000-56598
10-Q Open Document | Data Open Filing 10-Q Oct 29, 2024 Sep 30, 2024 000-56598
SC 13G/A Open Document Open Filing Oct 18, 2024 005-94291
4 Open Document Open Filing FORM 4 Oct 2, 2024 Oct 1, 2024
4 Open Document Open Filing FORM 4 Oct 2, 2024 Oct 1, 2024
4 Open Document Open Filing FORM 4 Oct 2, 2024 Oct 1, 2024
4 Open Document Open Filing FORM 4 Oct 2, 2024 Oct 1, 2024
4 Open Document Open Filing FORM 4 Oct 2, 2024 Oct 1, 2024
4 Open Document Open Filing FORM 4 Oct 2, 2024 Oct 1, 2024
4 Open Document Open Filing FORM 4 Oct 2, 2024 Oct 1, 2024
8-K Open Document | Data Open Filing 8-K Sep 4, 2024 Sep 4, 2024 000-56598
8-K Open Document | Data Open Filing 8-K Aug 9, 2024 Aug 7, 2024 000-56598
4 Open Document Open Filing FORM 4 Aug 8, 2024 Aug 8, 2024
4 Open Document Open Filing FORM 4 Aug 5, 2024 Aug 1, 2024
8-K Open Document | Data Open Filing 8-K Aug 2, 2024 Jul 30, 2024 000-56598
8-K Open Document | Data Open Filing 8-K Jul 31, 2024 Jul 30, 2024 000-56598
10-Q Open Document | Data Open Filing 10-Q Jul 31, 2024 Jun 30, 2024 000-56598
8-K Open Document | Data Open Filing 8-K Jul 15, 2024 Jul 15, 2024 000-56598
4 Open Document Open Filing FORM 4 Jul 2, 2024 Jul 2, 2024
4 Open Document Open Filing FORM 4 Jul 2, 2024 Jul 2, 2024
4 Open Document Open Filing FORM 4 Jul 2, 2024 Jul 2, 2024
4 Open Document Open Filing FORM 4 Jul 2, 2024 Jul 2, 2024
4 Open Document Open Filing FORM 4 Jul 2, 2024 Jul 2, 2024
4 Open Document Open Filing FORM 4 Jul 2, 2024 Jul 2, 2024
4 Open Document Open Filing FORM 4 Jul 2, 2024 Jul 2, 2024
8-K Open Document | Data Open Filing 8-K Jun 3, 2024 Jun 3, 2024 000-56598
8-K Open Document | Data Open Filing 8-K May 20, 2024 May 20, 2024 000-56598
4 Open Document Open Filing FORM 4 May 8, 2024 May 7, 2024
144 Open Document Open Filing May 7, 2024 000-56598
4 Open Document Open Filing FORM 4 May 6, 2024 May 2, 2024
4 Open Document Open Filing FORM 4 May 3, 2024 May 3, 2024
144 Open Document Open Filing May 3, 2024 000-56598
8-K Open Document | Data Open Filing 8-K May 2, 2024 Apr 26, 2024 000-56598
4 Open Document Open Filing FORM 4 May 1, 2024 May 1, 2024
144 Open Document Open Filing May 1, 2024 000-56598
8-K Open Document | Data Open Filing 8-K Apr 26, 2024 Apr 25, 2024 000-56598
10-Q Open Document | Data Open Filing 10-Q Apr 26, 2024 Mar 31, 2024 000-56598
8-K Open Document | Data Open Filing 8-K Apr 18, 2024 Apr 12, 2024 000-56598
8-K Open Document | Data Open Filing 8-K Apr 3, 2024 Mar 28, 2024 000-56598
4 Open Document Open Filing FORM 4 Apr 2, 2024 Apr 2, 2024
4 Open Document Open Filing FORM 4 Apr 2, 2024 Apr 2, 2024
4 Open Document Open Filing FORM 4 Apr 2, 2024 Apr 2, 2024
4 Open Document Open Filing FORM 4 Apr 2, 2024 Apr 2, 2024
4 Open Document Open Filing FORM 4 Apr 2, 2024 Apr 2, 2024
4 Open Document Open Filing FORM 4 Apr 2, 2024 Apr 2, 2024
4 Open Document Open Filing FORM 4 Apr 2, 2024 Apr 2, 2024
4 Open Document Open Filing FORM 4 Apr 2, 2024 Apr 2, 2024
8-K Open Document | Data Open Filing 8-K Mar 21, 2024 Mar 21, 2024 000-56598
4 Open Document Open Filing FORM 4 Mar 14, 2024 Mar 13, 2024
4 Open Document Open Filing FORM 4 Mar 14, 2024 Mar 13, 2024
4 Open Document Open Filing FORM 4 Mar 14, 2024 Mar 13, 2024
4 Open Document Open Filing FORM 4 Mar 14, 2024 Mar 13, 2024
4 Open Document Open Filing FORM 4 Mar 14, 2024 Mar 13, 2024
4 Open Document Open Filing FORM 4 Mar 14, 2024 Mar 13, 2024
4 Open Document Open Filing FORM 4 Mar 14, 2024 Mar 13, 2024
4 Open Document Open Filing FORM 4 Mar 14, 2024 Mar 13, 2024
4 Open Document Open Filing FORM 4 Mar 14, 2024 Mar 13, 2024
4 Open Document Open Filing FORM 4 Mar 14, 2024 Mar 13, 2024
4 Open Document Open Filing FORM 4 Mar 14, 2024 Mar 13, 2024
4 Open Document Open Filing FORM 4 Mar 6, 2024 Mar 5, 2024
4 Open Document Open Filing FORM 4 Mar 6, 2024 Mar 5, 2024
4 Open Document Open Filing FORM 4 Mar 6, 2024 Mar 5, 2024
4 Open Document Open Filing FORM 4 Mar 6, 2024 Mar 5, 2024
4 Open Document Open Filing FORM 4 Mar 6, 2024 Mar 5, 2024
4 Open Document Open Filing FORM 4 Mar 6, 2024 Mar 5, 2024
4 Open Document Open Filing FORM 4 Mar 6, 2024 Mar 5, 2024
4 Open Document Open Filing FORM 4 Mar 6, 2024 Mar 5, 2024
4 Open Document Open Filing FORM 4 Mar 6, 2024 Mar 5, 2024
ARS Open Document Open Filing ARS NWE ANNUAL REPORT (FILED 2024) Mar 6, 2024 Dec 31, 2023 000-56598
DEFA14A Open Document Open Filing DEFA14A Mar 6, 2024 000-56598
DEF 14A Open Document | Data Open Filing DEF 14A Mar 6, 2024 Apr 26, 2024 000-56598
4 Open Document Open Filing FORM 4 Mar 5, 2024 Mar 1, 2024
8-K Open Document | Data Open Filing 8-K Mar 5, 2024 Mar 5, 2024 000-56598
4 Open Document Open Filing FORM 4 Feb 27, 2024 Feb 27, 2024
4 Open Document Open Filing FORM 4 Feb 21, 2024 Feb 20, 2024
8-K Open Document | Data Open Filing 8-K Feb 20, 2024 Feb 14, 2024 000-56598
8-K Open Document | Data Open Filing 8-K Feb 15, 2024 Feb 14, 2024 000-56598
10-K Open Document | Data Open Filing 10-K Feb 15, 2024 Dec 31, 2023 000-56598
SC 13G/A Open Document Open Filing SC 13G/A Feb 12, 2024 005-94291
4 Open Document Open Filing FORM 4 Feb 7, 2024 Feb 5, 2024
SC 13G/A Open Document Open Filing Jan 22, 2024 005-94291
4 Open Document Open Filing FORM 4 Jan 8, 2024 Jan 8, 2024
4 Open Document Open Filing FORM 4 Jan 8, 2024 Jan 8, 2024
4 Open Document Open Filing FORM 4 Jan 8, 2024 Jan 8, 2024
4 Open Document Open Filing FORM 4 Jan 8, 2024 Jan 8, 2024
4 Open Document Open Filing FORM 4 Jan 8, 2024 Jan 8, 2024
4 Open Document Open Filing FORM 4 Jan 8, 2024 Jan 8, 2024
4 Open Document Open Filing FORM 4 Jan 8, 2024 Jan 8, 2024
4 Open Document Open Filing FORM 4 Jan 8, 2024 Jan 8, 2024
8-K Open Document | Data Open Filing 8-K Jan 2, 2024 Dec 27, 2023 000-56598
8-K Open Document | Data Open Filing 8-K Dec 27, 2023 Dec 20, 2023 000-56598
8-K Open Document | Data Open Filing 8-K Dec 6, 2023 Dec 6, 2023 000-56598
8-K Open Document | Data Open Filing 8-K Dec 5, 2023 Nov 29, 2023 000-56598
8-K Open Document | Data Open Filing 8-K Nov 13, 2023 Nov 12, 2023 000-56598
8-K Open Document | Data Open Filing 8-K Oct 27, 2023 Oct 26, 2023 000-56598
10-Q Open Document | Data Open Filing 10-Q Oct 27, 2023 Sep 30, 2023 000-56598
S-8 Open Document Open Filing S-8 Oct 3, 2023 333-274844
S-8 Open Document Open Filing S-8 Oct 3, 2023 333-274843
S-3ASR Open Document Open Filing S-3ASR Oct 2, 2023 333-274814
S-3ASR Open Document Open Filing S-3ASR Oct 2, 2023 333-274813
8-K12G3 Open Document | Data Open Filing 8-K12G3 Oct 2, 2023 Oct 2, 2023 000-56598