Company record

Koppers Inc. layoffs and WARN notices.

Koppers Inc. has 1 WARN notice on PinkSlipped's Layoff Wire covering 66 workers at 1 location in South Carolina, filed in April 2026.

A WARN filing does not, by itself, indicate why a layoff happened. Read the methodology

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According to PinkSlipped's Layoff Wire, which tracks WARN notices filed with 33 state labor departments, …

Source: PinkSlipped's Layoff Wire (gotpinkslipped.com/layoff-wire/company/koppers-inc)