---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-24-021675"
form_type: "8-K"
ticker: "KOP"
cik: "0001315257"
company_name: "Koppers Holdings Inc."
filed_at: "2024-02-28T23:59:59+00:00"
generated_at: "2026-06-05T08:22:54.191252+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Koppers reports record Q4 sales of $513.2M; FY 2023 record sales $2.15B; guides 2024 adj. EBITDA ~$275M

## Summary
- Q4 sales $513.2M (+6.3% YoY); net income $12.9M ($0.59 diluted EPS) vs $13.8M ($0.65) prior year.
- Full-year record sales $2.15B (+8.8%); record adj. EBITDA $256.4M (+12.4%); operating cash flow record $146.1M.
- RUPS & PC segments drove growth; CMC adj. EBITDA fell to $3.8M from $21.2M on lower carbon prices.
- 2024 guidance: sales ~$2.25B, adj. EBITDA ~$275M, adj. EPS $4.60-$4.80; expects softer Q1 then improvement.
- Company targeting U.S. pension plan termination in Q4 2024 requiring ~$25M funding.

## SEC filing metadata
- accession: 0000950170-24-021675
- form_type: 8-K
- ticker: KOP
- cik: 0001315257
- company_name: Koppers Holdings Inc.
- filed_at: 2024-02-28T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1315257/000095017024021675/0000950170-24-021675-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1315257/000095017024021675/kop-20240228.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-24-021675
- JSON: https://secwatch.observer/filing/0000950170-24-021675.json
- Plain text: https://secwatch.observer/filing/0000950170-24-021675.txt

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