---
schema_version: "secwatch.filing_event.v1"
accession: "0000073088-23-000106"
form_type: "8-K"
ticker: null
cik: "0000073088"
company_name: "NORTHWESTERN CORP"
filed_at: "2023-05-05T23:59:59+00:00"
generated_at: "2026-06-15T18:36:01.434161+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# NorthWestern issues $30M South Dakota First Mortgage Bonds at 5.42%

## Summary
- Issued $30M principal of South Dakota First Mortgage Bonds due May 1, 2033, at 5.42% interest rate.
- Received remaining $50M proceeds from previously announced $239M Montana First Mortgage Bonds issuance.
- Bonds are secured by first mortgage lien and rank equally with existing secured debt.
- May be redeemed at make-whole price prior to maturity; subject to customary events of default.

## SEC filing metadata
- accession: 0000073088-23-000106
- form_type: 8-K
- cik: 0000073088
- company_name: NORTHWESTERN CORP
- filed_at: 2023-05-05T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.01, 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/73088/000007308823000106/0000073088-23-000106-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/73088/000007308823000106/nwe-20230501.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000073088-23-000106
- JSON: https://secwatch.observer/filing/0000073088-23-000106.json
- Plain text: https://secwatch.observer/filing/0000073088-23-000106.txt

## Key facts
- Debt Financings
  NORTHWESTERN CORP incurred senior notes of $30 million with The Bank of New York Mellon, as trustee at 5.42% maturing May 1, 2033.
  - Instrument: senior notes
  - Principal: $30 million
  - Counterparty: The Bank of New York Mellon, as trustee
  - Rate: 5.42%
  - Maturity: May 1, 2033
  - Event: incurrence
  source text: On May 1, 2023, NorthWestern Corporation d/b/a NorthWestern Energy (NYSE: NWE) (the " Company ") issued and sold $30 million principal amount of the Company's South Dakota First Mortgage Bonds
  evidence_url: https://www.sec.gov/Archives/edgar/data/73088/000007308823000106/0000073088-23-000106-index.htm

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