---
schema_version: "secwatch.filing_event.v1"
accession: "0001315257-25-000006"
form_type: "8-K"
ticker: "KOP"
cik: "0001315257"
company_name: "Koppers Holdings Inc."
filed_at: "2025-11-05T23:59:59+00:00"
generated_at: "2026-05-17T00:12:31.971468+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Koppers expands board to nine, elects Laura Posadas as director

## Summary
- Board increased from eight to nine directors; Laura Posadas elected effective Nov 5, 2025.
- Posadas is CEO of Canlak Coatings (wood coating systems), with 20+ years specialty chemicals experience.
- Board determined she is independent under NYSE rules; committees not yet assigned.
- Will stand for election at 2026 annual meeting; compensation per standard non-employee director plan.
- No reportable transactions or arrangements with company; no material relationships.

## SEC filing metadata
- accession: 0001315257-25-000006
- form_type: 8-K
- ticker: KOP
- cik: 0001315257
- company_name: Koppers Holdings Inc.
- filed_at: 2025-11-05T23:59:59+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/1315257/000131525725000006/0001315257-25-000006-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1315257/000131525725000006/kop-20251105.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001315257-25-000006
- JSON: https://secwatch.observer/filing/0001315257-25-000006.json
- Plain text: https://secwatch.observer/filing/0001315257-25-000006.txt

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