NorthWestern Energy Group, Inc. — DEFA14A Filings

3 DEFA14A filings on record

This page lists all DEFA14A filings submitted to the SEC by NorthWestern Energy Group, Inc. (NWE), sorted by most recent first. Each row links to the full filing on EdgarLookup. NorthWestern Energy Group, Inc. has filed 3 DEFA14A documents with the SEC since 2023. To view all SEC filings by NorthWestern Energy Group, Inc., see the full filings list.

Overview All Filings Financials Insiders

All 10-K 10-Q 144 3 4 425 8-K 8-K12G3 ANNLRPT ARS DEF 14A DEFA14A DEFM14A S-3ASR S-8 SC 13G/A SCHEDULE 13G/A

Form	Description	Accession Number	Filed	Period
DEFA14A	DEFA14A	0001993004-26-000020	Mar 12, 2026	—
DEFA14A	DEFA14A	0001993004-25-000061	Mar 12, 2025	—
DEFA14A	DEFA14A	0001993004-24-000022	Mar 6, 2024	—