COMPANY DOSSIER
Martin Marietta Materials Layoffs
Yes. Martin Marietta Materials filed a WARN notice to cut 83 jobs in Cave-in-Rock, Illinois. It was filed May 5, 2006 under the federal WARN Act.
83 roles affected across 1 filing.
Canary status: SingingEVIDENCE-BASED · NOT A PREDICTION
2 executive changes disclosed to the SEC · M&A activity (SEC 8-K Item 2.01)
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 Martin Marietta Materials's solvency or creditworthiness. Not a credit rating and not financial advice. See our sources and method.
Corporate signalsSEC · PBGC · PRIMARY SOURCES
Material corporate events on record for Martin Marietta Materials, beyond the WARN notice, that fill in the wider story of a company under pressure. Each links to its official source. No other layoff tracker connects these.
May 14, 2026Executive ChangeSEC Form 8-K, Item 5.02, filed 2026-05-14 by MARTIN MARIETTA MATERIALS INC (MLM).SEC filing →
Apr 27, 2026Executive ChangeSEC Form 8-K, Item 5.02, filed 2026-04-27 by MARTIN MARIETTA MATERIALS INC (MLM).SEC filing →
Feb 23, 2026AcquisitionSEC Form 8-K, Item 2.01, filed 2026-02-23 by MARTIN MARIETTA MATERIALS INC (MLM).SEC filing →
Jul 8, 2025Executive ChangeSEC Form 8-K, Item 5.02, filed 2025-07-08 by MARTIN MARIETTA MATERIALS INC (MLM).SEC filing →
Apr 10, 2025Executive ChangeSEC Form 8-K, Item 5.02, filed 2025-04-10 by MARTIN MARIETTA MATERIALS INC (MLM).SEC filing →
Dec 3, 2024Executive ChangeSEC Form 8-K, Item 5.02, filed 2024-12-03 by MARTIN MARIETTA MATERIALS INC (MLM).SEC filing →
Every filing
Cave-in-Rock, Illinois
Filed May 5, 2006 (20y ago) · Effective · · official filing →
83
LayoffQuestions
Is Martin Marietta Materials laying off employees?
Yes. Martin Marietta Materials filed a WARN notice to cut 83 jobs in Cave-in-Rock, Illinois. It was filed May 5, 2006 under the federal WARN Act.
How many jobs is Martin Marietta Materials cutting?
83 jobs, across 1 official WARN filing.
Watching Martin Marietta Materials?
We'll email you if there are further filings, expansions, or new locations affected.