---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-140217"
form_type: "8-K"
ticker: "BKH"
cik: "0001130464"
company_name: "BLACK HILLS CORP /SD/"
filed_at: "2026-04-02T23:59:59+00:00"
generated_at: "2026-05-15T07:47:42.481551+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Black Hills, NorthWestern shareholders approve merger; new name Bright Horizon Energy

## Summary
- Shareholders approved stock issuance for merger (59.8M for, 1.5M against).
- Authorized shares increased from 100M to 300M; indebtedness limit raised from $8B to $20B.
- Company name to change to Bright Horizon Energy Corporation upon closing.
- Merger still subject to federal (HSR, FERC) and state (MT, NE, SD) approvals; expected close H2 2026.

## SEC filing metadata
- accession: 0001193125-26-140217
- form_type: 8-K
- ticker: BKH
- cik: 0001130464
- company_name: BLACK HILLS CORP /SD/
- filed_at: 2026-04-02T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.07, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1130464/000119312526140217/0001193125-26-140217-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1130464/000119312526140217/bkh-20260402.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-140217
- JSON: https://secwatch.observer/filing/0001193125-26-140217.json
- Plain text: https://secwatch.observer/filing/0001193125-26-140217.txt

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