---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-24-062524"
form_type: "8-K"
ticker: "BKH"
cik: "0001130464"
company_name: "BLACK HILLS CORP /SD/"
filed_at: "2024-05-16T23:59:59+00:00"
generated_at: "2026-06-01T19:12:48.212266+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Black Hills issues $450M of 6.000% notes due 2035 to refinance near-term debt

## Summary
- Issued $450M principal of 6.000% Notes due January 15, 2035; semi-annual interest starts Jan 2025.
- Gross proceeds ~$446.1M after original issue discount and underwriting discounts.
- Proceeds used with available cash/short-term borrowings to retire $600M of 1.037% notes due Aug 2024.
- Notes are unsecured senior obligations ranking equally with existing unsecured debt.
- Underwriting agreement between Black Hills and several underwriters executed May 13, 2024.

## SEC filing metadata
- accession: 0001104659-24-062524
- form_type: 8-K
- ticker: BKH
- cik: 0001130464
- company_name: BLACK HILLS CORP /SD/
- filed_at: 2024-05-16T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 1.01, 8.01, 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1130464/000110465924062524/0001104659-24-062524-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1130464/000110465924062524/tm2413281d5_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-24-062524
- JSON: https://secwatch.observer/filing/0001104659-24-062524.json
- Plain text: https://secwatch.observer/filing/0001104659-24-062524.txt

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