---
schema_version: "secwatch.filing_event.v1"
accession: "0001227654-23-000174"
form_type: "8-K"
ticker: "CMP"
cik: "0001227654"
company_name: "COMPASS MINERALS INTERNATIONAL INC"
filed_at: "2023-09-21T23:59:59+00:00"
generated_at: "2026-06-10T10:19:03.702152+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Compass Minerals to file resale registration statement for Koch Minerals shares

## Summary
- Company to file Form S-3 registering shares held by Koch Minerals & Trading (KM&T) under a 2022 stock purchase agreement.
- Registration is required by agreement; no request from KM&T triggered the filing.
- Company will not sell shares or receive proceeds from any future sales by KM&T.
- KM&T may sell shares in the future; amount and timing unknown.

## SEC filing metadata
- accession: 0001227654-23-000174
- form_type: 8-K
- ticker: CMP
- cik: 0001227654
- company_name: COMPASS MINERALS INTERNATIONAL INC
- filed_at: 2023-09-21T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 7.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1227654/000122765423000174/0001227654-23-000174-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1227654/000122765423000174/cmp-20230921.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001227654-23-000174
- JSON: https://secwatch.observer/filing/0001227654-23-000174.json
- Plain text: https://secwatch.observer/filing/0001227654-23-000174.txt

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