---
schema_version: "secwatch.filing_event.v1"
accession: "0001227654-22-000214"
form_type: "8-K"
ticker: "CMP"
cik: "0001227654"
company_name: "COMPASS MINERALS INTERNATIONAL INC"
filed_at: "2022-07-12T23:59:59+00:00"
generated_at: "2026-06-24T16:25:53.067863+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Compass Minerals appoints Melissa Miller to board, expanding to 10 members

## Summary
- Melissa Miller appointed as independent director effective July 11, 2022; board expands from 9 to 10.
- Miller serves on Nominating/Corporate Governance and EHS&S committees.
- Received prorated equity grant of $120,000 vesting July 2023.
- Miller is EVP & CHRO of Arconic Corporation with over 20 years HR experience.

## SEC filing metadata
- accession: 0001227654-22-000214
- form_type: 8-K
- ticker: CMP
- cik: 0001227654
- company_name: COMPASS MINERALS INTERNATIONAL INC
- filed_at: 2022-07-12T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1227654/000122765422000214/0001227654-22-000214-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1227654/000122765422000214/cmp-20220711.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001227654-22-000214
- JSON: https://secwatch.observer/filing/0001227654-22-000214.json
- Plain text: https://secwatch.observer/filing/0001227654-22-000214.txt

## Key facts
- Executive change
  Melissa M. Miller was appointed as director at COMPASS MINERALS INTERNATIONAL INC.
  - Action: appointed
  - Role: director
  source text: Effective July 11, 2022, the Board of Directors (the “Board”) of Compass Minerals International, Inc. (the “Company”) increased the size of the Board from nine directors to ten directors and appointed Melissa M. Miller as a director with a term expiring at the Company’s next annual meeting of stockholders.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1227654/000122765422000214/0001227654-22-000214-index.htm

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