COMPANY DOSSIER

Diamond Transportation Services Layoffs

Yes. Diamond Transportation Services filed 4 WARN notices to cut 1,091 jobs in 2 states, with the layoffs effective May 12, 2026. The most recent was filed May 13, 2026 under the federal WARN Act.

1,091 roles affected across 4 filings in 2 states.

Canary status: CallingEVIDENCE-BASED · NOT A PREDICTION
2 WARN filings in the last 4 months (715 jobs) · 2 permanent site closures
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 Diamond Transportation Services's solvency or creditworthiness. Not a credit rating and not financial advice. See our sources and method.
◆ NATIONAL FOOTPRINT · 2 states. Each state files its own WARN notice, so small per-state counts are slices of one distributed layoff. Ranked by jobs cut:
Maryland947Virginia144

Filing history

Diamond Transportation Services has filed 4 WARN notices between 2025 and 2026, cutting 1,091 jobs in total. Activity picked back up in the last 12 months (1,091 jobs) after a quiet prior year.

376
715
2025
2026

Every filing

Landover, Maryland
Filed May 13, 2026 (2mo ago) · Effective May 12, 2026 · official filing →
571
Closure
Fairfax County, Virginia
Filed May 12, 2026 (2mo ago) · Effective May 12, 2026 · official filing →
144
Closure
Capital Heights, Maryland
Filed Nov 10, 2025 (8mo ago) · Effective Nov 30, 2025 · official filing →
194
Layoff
Saint Leonard, Maryland
Filed Nov 10, 2025 (8mo ago) · Effective Nov 30, 2025 · official filing →
182
Layoff

Questions

Is Diamond Transportation Services laying off employees?

Yes. Diamond Transportation Services filed 4 WARN notices to cut 1,091 jobs in 2 states, with the layoffs effective May 12, 2026. The most recent was filed May 13, 2026 under the federal WARN Act.

How many jobs is Diamond Transportation Services cutting?

1,091 jobs, across 4 official WARN filings in 2 states.

When do the Diamond Transportation Services layoffs take effect?

The most recent filing lists an effective date of May 12, 2026. The WARN Act requires roughly 60 days' advance notice, so the filing date precedes the job losses.

Watching Diamond Transportation Services?

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