NorthWestern Energy Group, Inc. SEC filings NWE
NorthWestern Energy Group, Inc. has 318 filings in SEC EDGAR's recent list, going back to Oct 2, 2023. Its latest annual report, Form 10-K, was filed on Feb 12, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| ANNLRPT | 2025 annual report | Mar 12, 2026 | Dec 31, 2025 |
| 425 | Filing | Feb 6, 2026 | — |
| 425 | Filing | Jan 30, 2026 | — |
| 425 | 425 krtv interview transcript | Jan 22, 2026 | — |
| 425 | 425 sd bill insert january 2026 | Dec 29, 2025 | — |
| 425 | 425 ne bill insert jan 2026 | Dec 29, 2025 | — |
| 425 | 425 mt radio ads 2025 12 29 | Dec 29, 2025 | — |
| 425 | 425 bird the outlet transcript | Dec 23, 2025 | — |
| 425 | 425 employee email re dec mt bill insert | Dec 3, 2025 | — |
| 425 | 425 december 2025 mt customer bill insert | Dec 3, 2025 | — |
| 425 | 425 mt pbs impact transcript excerpts | Nov 13, 2025 | — |
| 425 | Filing | Nov 10, 2025 | — |
| 425 | Filing | Oct 28, 2025 | — |
| 425 | Filing | Oct 28, 2025 | — |
| 425 | 425 press release mt merger approval filing | Oct 21, 2025 | — |
| 425 | 425 voices of mt transcript | Sep 22, 2025 | — |
| 425 | 425 b of a interview transcript bird | Sep 11, 2025 | — |
| 425 | 425 hh transcript | Aug 28, 2025 | — |
| 425 | 425 jh linkedin post | Aug 20, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | 425 nwe supplier business partner | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | 425 regulator elected official | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | 425 nwe people leader toolkit | Aug 19, 2025 | — |
| 425 | 425 nwe people leader cover email | Aug 19, 2025 | — |
| 425 | Filing | Aug 19, 2025 | — |
| 425 | 425 nwe leader comm toolkit | Aug 19, 2025 | — |
| 425 | 425 nwe employee faq | Aug 19, 2025 | — |
| 425 | 425 nwe customer email | Aug 19, 2025 | — |
| 425 | 425 analyst investor courtesy | Aug 19, 2025 | — |
| 425 | 425 nwe employee email | Aug 19, 2025 | — |
| 8-K12G3 | Filing | Oct 2, 2023 | Oct 2, 2023 |
Showing 44 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Electric & Other Services Combined (SIC 4931)
- Listed as
- NWE (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Sioux Falls, SD
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1993004
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.