---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-22-023470"
form_type: "8-K"
ticker: "HNRG"
cik: "0000788965"
company_name: "HALLADOR ENERGY CO"
filed_at: "2022-10-03T23:59:59+00:00"
generated_at: "2026-06-23T06:11:20.423928+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Hallador Energy dismisses Plante & Moran, appoints Grant Thornton as auditor

## Summary
- Dismissed Plante & Moran as independent auditor, effective Sept 27, 2022; prior reports were unmodified.
- Appointed Grant Thornton as new auditor, effective for quarter ending Sept 30, 2022, approved by audit committee.
- No disagreements or reportable events occurred with Plante & Moran during fiscal 2020-2021 and through dismissal.
- No pre-appointment consultations with Grant Thornton on accounting principles or audit opinion.

## SEC filing metadata
- accession: 0001437749-22-023470
- form_type: 8-K
- ticker: HNRG
- cik: 0000788965
- company_name: HALLADOR ENERGY CO
- filed_at: 2022-10-03T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/788965/000143774922023470/0001437749-22-023470-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/788965/000143774922023470/hnrg20220929_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-22-023470
- JSON: https://secwatch.observer/filing/0001437749-22-023470.json
- Plain text: https://secwatch.observer/filing/0001437749-22-023470.txt

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