COMPANY DOSSIER
Koppers Layoffs
Yes. Koppers filed a WARN notice to cut 66 jobs in Florence, South Carolina. It was filed Apr 21, 2026 under the federal WARN Act.
66 roles affected across 1 filing.
Canary status: ListeningEVIDENCE-BASED · NOT A PREDICTION
1 WARN filing in the last 4 months (66 jobs)
CanaryWhistle's own assessment, computed from the public filings listed on this page. It is a read of hiring and workforce activity, not a statement about Koppers's solvency or creditworthiness. Not a credit rating and not financial advice. See our sources and method.
Every filing
Florence, South Carolina
Filed Apr 21, 2026 (3mo ago) · Effective · · official filing →
66
LayoffQuestions
Is Koppers laying off employees?
Yes. Koppers filed a WARN notice to cut 66 jobs in Florence, South Carolina. It was filed Apr 21, 2026 under the federal WARN Act.
How many jobs is Koppers cutting?
66 jobs, across 1 official WARN filing.
Watching Koppers?
We'll email you if there are further filings, expansions, or new locations affected.