---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-24-052134"
form_type: "8-K/A"
ticker: "KOP"
cik: "0001315257"
company_name: "Koppers Holdings Inc."
filed_at: "2024-05-02T23:59:59+00:00"
generated_at: "2026-06-03T00:07:44.704726+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Koppers appoints Director Vartanian to Audit, Strategy and Risk, and Sustainability committees

## Summary
- Nishan J. Vartanian appointed to Audit Committee, Strategy and Risk Committee, and Sustainability Committee, effective May 2, 2024.
- Board had deferred committee assignments at Vartanian's election on February 13, 2024.
- This 8-K/A amends the original 8-K to provide the committee details.

## SEC filing metadata
- accession: 0000950170-24-052134
- form_type: 8-K/A
- ticker: KOP
- cik: 0001315257
- company_name: Koppers Holdings Inc.
- filed_at: 2024-05-02T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1315257/000095017024052134/0000950170-24-052134-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1315257/000095017024052134/kop-20240502.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-24-052134
- JSON: https://secwatch.observer/filing/0000950170-24-052134.json
- Plain text: https://secwatch.observer/filing/0000950170-24-052134.txt

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