LayoffLeads

Koppers Inc. layoffs 2026: WARN notices & reports

Koppers Inc.: 1 layoff event on record since Apr 2026, 1 state WARN filing in SC naming 66 workers. Latest: Apr 21, 2026. Every event links to its source.

1events on record
1WARN filings
66workers in WARN filings
Apr 21, 2026latest event

States with WARN filings: South Carolina.

Latest Koppers Inc. layoff events

DateEventWhereWorkersSource
Apr 21, 2026WARNWARN noticeFlorence, SC66South Carolina Department of Employment and Workforce

About this data

WARN notices are filed by employers with state workforce agencies, usually 60 days before a mass layoff or plant closing. Counts are as reported in the notice and can change if the employer amends it. See methodology for how records are matched to companies.

Other recent WARN filings in South Carolina