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NorthWestern Energy Group SEC Filings

NASDAQ: NWEUtilitiesPower GenerationUSD

74.15-0.48 (-0.64%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

NorthWestern Energy Group filing overview

This page lists 60 recent SEC filings by NorthWestern Energy Group (NWE), including 39 4, 13 8-K, 2 10-Q, 2 SCHEDULE 13G. The latest annual report (10-K) was filed on Feb 12, 2026 for the period ending Dec 31, 2025. The most recent quarterly report (10-Q) was filed on Jul 30, 2026.

The latest current report (8-K), used to disclose material events such as earnings releases and executive changes, was filed on Sep 9, 2026. Form 10-K is the audited annual report, 10-Q the quarterly report, 8-K covers material events, and Form 4 reports insider transactions. All documents link directly to SEC EDGAR.

Summary generated from market data by MetaCap's automated system. Methodology

NWE SEC filings

NorthWestern Energy Group SEC filings
FiledFormDescriptionDocument
Oct 5, 20264Statement of changes in beneficial ownershipView on EDGAR
Oct 5, 20264Statement of changes in beneficial ownershipView on EDGAR
Oct 5, 20264Statement of changes in beneficial ownershipView on EDGAR
Oct 5, 20264Statement of changes in beneficial ownershipView on EDGAR
Oct 5, 20264Statement of changes in beneficial ownershipView on EDGAR
Oct 5, 20264Statement of changes in beneficial ownershipView on EDGAR
Oct 5, 20264Statement of changes in beneficial ownershipView on EDGAR
Oct 5, 20264Statement of changes in beneficial ownershipView on EDGAR
Sep 9, 20268-KRegulation FD DisclosureView on EDGAR
Aug 6, 20264Statement of changes in beneficial ownershipView on EDGAR
Aug 5, 20264Statement of changes in beneficial ownershipView on EDGAR
Jul 30, 202610-QQuarterly reportView on EDGAR
Jul 30, 20268-KResults of Operations and Financial Condition; Regulation FD DisclosureView on EDGAR
Jul 13, 20264Statement of changes in beneficial ownershipView on EDGAR
Jul 13, 20264/AStatement of changes in beneficial ownership (amendment)View on EDGAR
Jul 13, 20264Statement of changes in beneficial ownershipView on EDGAR
Jul 13, 20264Statement of changes in beneficial ownershipView on EDGAR
Jul 13, 20264Statement of changes in beneficial ownershipView on EDGAR
Jul 13, 20264Statement of changes in beneficial ownershipView on EDGAR
Jul 13, 20264Statement of changes in beneficial ownershipView on EDGAR
Jun 22, 20268-KEntry into a Material Definitive Agreement; Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet ArrangementView on EDGAR
Jun 2, 20268-KRegulation FD DisclosureView on EDGAR
Jun 2, 20268-KEntry into a Material Definitive Agreement; Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet ArrangementView on EDGAR
May 27, 20268-KRegulation FD DisclosureView on EDGAR
May 18, 20268-KRegulation FD DisclosureView on EDGAR
May 12, 20264Statement of changes in beneficial ownershipView on EDGAR
May 12, 20264Statement of changes in beneficial ownershipView on EDGAR
May 5, 20268-KSubmission of Matters to a Vote of Security HoldersView on EDGAR
Apr 30, 202610-QQuarterly reportView on EDGAR
Apr 30, 20268-KResults of Operations and Financial Condition; Regulation FD DisclosureView on EDGAR
Apr 30, 2026SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Apr 29, 2026SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Apr 7, 20264Statement of changes in beneficial ownershipView on EDGAR
Apr 7, 20264Statement of changes in beneficial ownershipView on EDGAR
Apr 7, 20264Statement of changes in beneficial ownershipView on EDGAR
Apr 7, 20264Statement of changes in beneficial ownershipView on EDGAR
Apr 7, 20264Statement of changes in beneficial ownershipView on EDGAR
Apr 7, 20264Statement of changes in beneficial ownershipView on EDGAR
Apr 3, 20268-KSubmission of Matters to a Vote of Security Holders; Other EventsView on EDGAR
Mar 27, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Mar 12, 2026DEF 14ADefinitive proxy statementView on EDGAR
Mar 3, 20264Statement of changes in beneficial ownershipView on EDGAR
Mar 2, 20264Statement of changes in beneficial ownershipView on EDGAR
Mar 2, 20264Statement of changes in beneficial ownershipView on EDGAR
Mar 2, 20264Statement of changes in beneficial ownershipView on EDGAR
Mar 2, 20264Statement of changes in beneficial ownershipView on EDGAR
Mar 2, 20264Statement of changes in beneficial ownershipView on EDGAR
Mar 2, 20264Statement of changes in beneficial ownershipView on EDGAR
Mar 2, 20264Statement of changes in beneficial ownershipView on EDGAR
Mar 2, 20264Statement of changes in beneficial ownershipView on EDGAR
Mar 2, 20264Statement of changes in beneficial ownershipView on EDGAR
Feb 25, 20264Statement of changes in beneficial ownershipView on EDGAR
Feb 25, 20264Statement of changes in beneficial ownershipView on EDGAR
Feb 25, 20264Statement of changes in beneficial ownershipView on EDGAR
Feb 25, 20264Statement of changes in beneficial ownershipView on EDGAR
Feb 25, 20264Statement of changes in beneficial ownershipView on EDGAR
Feb 17, 20268-KDeparture or Appointment of Directors or Officers; Compensatory ArrangementsView on EDGAR
Feb 12, 202610-KAnnual reportView on EDGAR
Feb 12, 20268-KResults of Operations and Financial Condition; Regulation FD DisclosureView on EDGAR
Dec 9, 20258-KRegulation FD Disclosure; Other EventsView on EDGAR

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