---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-046204"
form_type: "8-K"
ticker: "BKH"
cik: "0001130464"
company_name: "BLACK HILLS CORP /SD/"
filed_at: "2025-05-08T23:59:59+00:00"
generated_at: "2026-05-22T03:09:30.471203+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Black Hills amends ATM sales agreement, resets capacity to $400M

## Summary
- First Amendment to Equity Distribution Sales Agreement dated May 8, 2025 resets aggregate gross sales price to $400M.
- Amendment covers at-the-market offering of common stock using existing shelf registration; same agents and forward purchasers.
- Existing Sales Agreement terms remain in effect except for the new $400M limit superseding the prior cap.
- Proceeds may be used to repay borrowings under credit facilities where affiliates of the agents are lenders.
- Offering is made under base prospectus dated June 16, 2023 and Prospectus Supplement dated May 8, 2025.

## SEC filing metadata
- accession: 0001104659-25-046204
- form_type: 8-K
- ticker: BKH
- cik: 0001130464
- company_name: BLACK HILLS CORP /SD/
- filed_at: 2025-05-08T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1130464/000110465925046204/0001104659-25-046204-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1130464/000110465925046204/tm2514279d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-046204
- JSON: https://secwatch.observer/filing/0001104659-25-046204.json
- Plain text: https://secwatch.observer/filing/0001104659-25-046204.txt

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