---
schema_version: "secwatch.filing_event.v1"
accession: "0001315257-25-000014"
form_type: "8-K/A"
ticker: "KOP"
cik: "0001315257"
company_name: "Koppers Holdings Inc."
filed_at: "2025-12-03T23:59:59+00:00"
generated_at: "2026-05-16T15:03:24.563407+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Koppers estimates $4M-$5M in pre-tax restructuring charges for workforce reduction program

## Summary
- Pre-tax restructuring charges, severance and related benefits estimated at $4 million to $5 million.
- Future cash expenditures from the workforce reduction program expected to be approximately $1 million.
- Amendment filed to provide cost estimates not fully defined in the original November 8, 2024 filing.

## SEC filing metadata
- accession: 0001315257-25-000014
- form_type: 8-K/A
- ticker: KOP
- cik: 0001315257
- company_name: Koppers Holdings Inc.
- filed_at: 2025-12-03T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 2.05
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1315257/000131525725000014/0001315257-25-000014-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1315257/000131525725000014/kop-20241108.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001315257-25-000014
- JSON: https://secwatch.observer/filing/0001315257-25-000014.json
- Plain text: https://secwatch.observer/filing/0001315257-25-000014.txt

## Source-grounded claims
- claim_id: d7b23b9f4e199f635d2f0d41d01d3dd75bc2e8d1
  claim: Koppers Holdings Inc. announced a restructuring with charges of $4 million to $5 million.
  evidence_excerpt: The Company estimates pre-tax restructuring charges, employee severance charges and related benefit costs for actions associated with the workforce reduction program to be in the range of $4 million to $5 million, which the Company anticipates will result in future cash expenditures of approximately $1 million.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1315257/000131525725000014/0001315257-25-000014-index.htm

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