---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-048041"
form_type: "8-K"
ticker: "KOP"
cik: "0001315257"
company_name: "Koppers Holdings Inc."
filed_at: "2023-09-14T23:59:59+00:00"
generated_at: "2026-06-10T17:23:21.320600+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Koppers raises 2023 adjusted EBITDA guidance to $250M-$260M, EPS to $4.30-$4.60

## Summary
- Affirms 2023 sales ~$2.1B; adjusted EBITDA guidance raised to $250M-$260M, adjusted EPS to $4.30-$4.60 from $4.40.
- Cites volume strength in utility poles, wood preservatives, rail pricing actions, and better CM&C performance.
- Reiterates long-term target of $300M adjusted EBITDA by 2025.
- Hosts Investor Day in Chicago with CEO, CFO, COO, and CSO presenting strategic plan.
- Guidance increase reflects confidence in record quarterly results and progress on 2025 goals.

## SEC filing metadata
- accession: 0000950170-23-048041
- form_type: 8-K
- ticker: KOP
- cik: 0001315257
- company_name: Koppers Holdings Inc.
- filed_at: 2023-09-14T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1315257/000095017023048041/0000950170-23-048041-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1315257/000095017023048041/kop-20230914.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-048041
- JSON: https://secwatch.observer/filing/0000950170-23-048041.json
- Plain text: https://secwatch.observer/filing/0000950170-23-048041.txt

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