---
schema_version: "secwatch.filing_event.v1"
accession: "0001227654-23-000232"
form_type: "8-K"
ticker: "CMP"
cik: "0001227654"
company_name: "COMPASS MINERALS INTERNATIONAL INC"
filed_at: "2023-12-07T23:59:59+00:00"
generated_at: "2026-06-07T16:01:41.719537+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Compass Minerals dismisses EY, appoints KPMG as new auditor

## Summary
- Dismissed Ernst & Young on Dec 1, 2023 after a comprehensive selection process.
- Engaged KPMG on Dec 6, 2023 as independent auditor for FY2024 and interim periods.
- No disagreements with EY on accounting principles, audit scope, or disclosure during FY2022, FY2023, or subsequent period.
- EY's reports on FY2022 and FY2023 financial statements were unqualified with no adverse opinion.
- Previously disclosed material weaknesses in internal control over financial reporting remain unchanged.

## SEC filing metadata
- accession: 0001227654-23-000232
- form_type: 8-K
- ticker: CMP
- cik: 0001227654
- company_name: COMPASS MINERALS INTERNATIONAL INC
- filed_at: 2023-12-07T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1227654/000122765423000232/0001227654-23-000232-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1227654/000122765423000232/cmp-20231201.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001227654-23-000232
- JSON: https://secwatch.observer/filing/0001227654-23-000232.json
- Plain text: https://secwatch.observer/filing/0001227654-23-000232.txt

## Key facts
- Auditor Changes
  COMPASS MINERALS INTERNATIONAL INC dismissed Ernst & Young LLP as its auditor.
  - Action: dismissal
  - Auditor: Ernst & Young LLP
  - Successor: KPMG LLP
  source text: dismissed its current independent registered public accounting firm, Ernst & Young LLP ("Ernst & Young").
  evidence_url: https://www.sec.gov/Archives/edgar/data/1227654/000122765423000232/0001227654-23-000232-index.htm
- Auditor Changes
  COMPASS MINERALS INTERNATIONAL INC engaged KPMG LLP as its auditor.
  - Action: engagement
  - Auditor: KPMG LLP
  source text: engaged KPMG LLP, ("KPMG") as the Company's new independent registered public accounting firm.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1227654/000122765423000232/0001227654-23-000232-index.htm

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