---
schema_version: "secwatch.filing_event.v1"
accession: "0001315257-26-000010"
form_type: "8-K"
ticker: "KOP"
cik: "0001315257"
company_name: "Koppers Holdings Inc."
filed_at: "2026-02-26T23:59:59+00:00"
generated_at: "2026-05-15T23:27:00.537798+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Koppers reports Q4 sales down 9.3% but net income swings to $29.7M gain vs prior year loss

## Summary
- Q4 net sales $432.7M (-9.3% YoY); full-year $1.88B (-10.0% YoY).
- Q4 diluted EPS $1.47 (vs $(0.50) in Q4 2024); adjusted EPS $0.70 (vs $0.77).
- Full-year adjusted EBITDA $256.7M vs $261.6M; adjusted EPS $4.07 vs $4.11.
- 2026 outlook provided but no specific numeric guidance in press release.
- Operating cash flow $122.5M for 2025; $12M pension termination payment.

## SEC filing metadata
- accession: 0001315257-26-000010
- form_type: 8-K
- ticker: KOP
- cik: 0001315257
- company_name: Koppers Holdings Inc.
- filed_at: 2026-02-26T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1315257/000131525726000010/0001315257-26-000010-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1315257/000131525726000010/kop-20260226.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001315257-26-000010
- JSON: https://secwatch.observer/filing/0001315257-26-000010.json
- Plain text: https://secwatch.observer/filing/0001315257-26-000010.txt

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