---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-036234"
form_type: "8-K"
ticker: "HNRG"
cik: "0000788965"
company_name: "HALLADOR ENERGY CO"
filed_at: "2026-03-27T23:59:59+00:00"
generated_at: "2026-05-15T08:45:10.100736+00:00"
event_type: "regulatory"
sentiment: "negative"
materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Hallador subsidiary receives MSHA imminent danger order at Oaktown Mine No. 1; company contests

## Summary
- On March 25, 2026, Sunrise Coal received a Section 107(a) imminent danger order at Oaktown Fuels Mine No. 1 (MSHA ID 12-02394).
- MSHA alleged an electrician worked on equipment that was not de-energized; order required work to cease until equipment was de-energized.
- Hallador de-energized the equipment immediately; no injuries occurred and production was not interrupted.
- The company disagrees with the imminent danger classification and intends to contest the order.

## SEC filing metadata
- accession: 0001104659-26-036234
- form_type: 8-K
- ticker: HNRG
- cik: 0000788965
- company_name: HALLADOR ENERGY CO
- filed_at: 2026-03-27T23:59:59+00:00
- event_type: regulatory
- sentiment: negative
- materiality_score: 0.5
- confidence: high
- sec_items: 1.04, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/788965/000110465926036234/0001104659-26-036234-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/788965/000110465926036234/hnrg-20260325x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-036234
- JSON: https://secwatch.observer/filing/0001104659-26-036234.json
- Plain text: https://secwatch.observer/filing/0001104659-26-036234.txt

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