---
schema_version: "secwatch.filing_event.v1"
accession: "0001315257-26-000036"
form_type: "8-K"
ticker: "KOP"
cik: "0001315257"
company_name: "Koppers Holdings Inc."
filed_at: "2026-05-08T23:59:59+00:00"
generated_at: "2026-05-14T19:52:24.829716+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Koppers conditionally plans to shut Stickney, IL chemical operations; Q1 adjusted EPS down 19.7%

## Summary
- Q1 sales $455.3M (flat YoY); net income $7.1M vs loss of $13.9M; adjusted EPS $0.57 vs $0.71.
- Conditional decision to discontinue Stickney distillation by Dec 31, 2026, affecting ~85 employees; pending union negotiations.
- Pre-tax charges $227M–$262M through 2029, including $170M–$195M non-cash and $57M–$67M cash outlays.
- Expected annual free cash flow improvement of $15M–$25M; adjusted EBITDA benefit $15M–$20M/yr; adjusted EPS benefit $1.00–$1.20.
- Production to shift to Nyborg, Denmark facility in Q4 2026; enhanced shipping/terminal capabilities to serve customers.

## SEC filing metadata
- accession: 0001315257-26-000036
- form_type: 8-K
- ticker: KOP
- cik: 0001315257
- company_name: Koppers Holdings Inc.
- filed_at: 2026-05-08T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 2.05, 5.02, 5.07, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1315257/000131525726000036/0001315257-26-000036-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1315257/000131525726000036/kop-20260507.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001315257-26-000036
- JSON: https://secwatch.observer/filing/0001315257-26-000036.json
- Plain text: https://secwatch.observer/filing/0001315257-26-000036.txt

## Source-grounded claims
- claim_id: fe54d0e42c778f3e1264c8d1043ef5077e43d7c2
  claim: Koppers Holdings Inc. reported first quarter of 2026 results: revenue Sales of $455.3 million, net income Net income (loss) of $7.1 million, EPS Diluted EPS of $0.35.
  evidence_excerpt: McGuireQT@koppers.com Koppers Holdings Inc. 436 Seventh Avenue Pittsburgh, PA 15219-1800 Tel 412 227 2001 www.koppers.com KOPPERS REPORTS FIRST QUARTER 2026 RESULTS • Sales of $455.3 million vs. $456.5 million in Prior Year Quarter • Net income (loss) of $7.1 million vs. $(13.9) million in Prior Year Quarter • Diluted EPS of $0.35 vs. $(0.68) in Prior Year Quarter •
  evidence_url: https://www.sec.gov/Archives/edgar/data/1315257/000131525726000036/0001315257-26-000036-index.htm
- claim_id: cf25faee2fecdaee8c58a86d834655da24360878
  claim: Koppers Holdings Inc. announced a restructuring with charges of $227 million to $262 million affecting Stickney, Illinois facility (approximately 85 employees).
  evidence_excerpt: potentially appropriate uses for the Stickney facility following the end of production activities. The Company expects this action to result in pre-tax charges to earnings of $227 million to $262 million through the end of 2029, approximately $170 million to $195 million of which constitutes non-cash charges and approximately $57 million to $67 million of which
  evidence_url: https://www.sec.gov/Archives/edgar/data/1315257/000131525726000036/0001315257-26-000036-index.htm

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