---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-087681"
form_type: "8-K"
ticker: "KOP"
cik: "0001315257"
company_name: "Koppers Holdings Inc."
filed_at: "2025-06-18T23:59:59+00:00"
generated_at: "2026-05-19T02:36:06.096690+00:00"
event_type: "debt"
sentiment: "positive"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Koppers extends $800M revolver maturity to 2030, eases leverage covenant

## Summary
- Maturity extended to June 17, 2030 (or 91 days before term loan maturity).
- Net leverage covenant fixed at 4.75x through life; step-down to 4.50x removed.
- 10 bps credit spread adjustment on SOFR loans eliminated; margin grid adjusted.
- All other material terms and covenants of the Revolving Facility unchanged.
- CFO cites strengthened capital position, lower borrowing costs, and bank confidence.

## SEC filing metadata
- accession: 0000950170-25-087681
- form_type: 8-K
- ticker: KOP
- cik: 0001315257
- company_name: Koppers Holdings Inc.
- filed_at: 2025-06-18T23:59:59+00:00
- event_type: debt
- sentiment: positive
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1315257/000095017025087681/0000950170-25-087681-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1315257/000095017025087681/kop-20250617.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-087681
- JSON: https://secwatch.observer/filing/0000950170-25-087681.json
- Plain text: https://secwatch.observer/filing/0000950170-25-087681.txt

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