Koppers Carbon Materials LLC Layoffs & WARN Notices — WARN Index

Koppers Carbon Materials LLC: 1 WARN layoff notice since 2026, affecting 60 workers in 1 state. Latest filing October 30, 2026.

WARN notices filed by Koppers Carbon Materials LLC

• Koppers Carbon Materials LLC: Stickney, IL · 60 workers · October 30, 2026

Layoffs in: Illinois