---
schema_version: "secwatch.filing_event.v1"
accession: "0001993004-25-000067"
form_type: "8-K"
ticker: "NWE"
cik: "0001993004"
company_name: "NorthWestern Energy Group, Inc."
filed_at: "2025-03-27T23:59:59+00:00"
generated_at: "2026-05-24T04:23:53.123623+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# NW Corp issues $400M of 5.073% First Mortgage Bonds due 2030

## Summary
- $400M principal, 5.073% interest, matures March 21, 2030; semi-annual interest starting Sep 21, 2025.
- Proceeds to redeem outstanding 5.01% Series MT bonds due May 1, 2025, fund capex, working capital, and general purposes.
- Bonds rank equally with existing first mortgage debt; callable on/after Feb 21, 2030 at par.
- Issued in a private placement under Rule 144A/Reg S; governed by 1945 MT Indenture as supplemented.

## SEC filing metadata
- accession: 0001993004-25-000067
- form_type: 8-K
- ticker: NWE
- cik: 0001993004
- company_name: NorthWestern Energy Group, Inc.
- filed_at: 2025-03-27T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1993004/000199300425000067/0001993004-25-000067-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1993004/000199300425000067/nwe-20250321.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001993004-25-000067
- JSON: https://secwatch.observer/filing/0001993004-25-000067.json
- Plain text: https://secwatch.observer/filing/0001993004-25-000067.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.