COMPANY DOSSIER

Is Thermal Structures laying off workers?

Not according to official filings. There is no WARN layoff notice from Thermal Structures in the last 12 months. The most recent was filed Sep 2, 2025 for 447 jobs in Corona, California. WARN covers larger layoffs only, so smaller cuts may not appear.

1,393 roles affected across 6 filings in 2 states.

Canary status: SingingEVIDENCE-BASED · NOT A PREDICTION
No WARN filing or SEC event in the recent window — quiet on the wire right now.
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 Thermal Structures'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:
California1,238Indiana155

Filing history

Thermal Structures has filed 6 WARN notices between 2018 and 2025, cutting 1,393 jobs in total. No new filings in the last 12 months. The most recent was Sep 2, 2025.

1
400
350
40
602
2018
2019
2020
2021
2022
2023
2024
2025

Every filing

Corona, California
Filed Sep 2, 2025 (1y ago) · Effective Nov 24, 2025 · official filing →
447
Closure
Plainfield, Indiana
Filed Aug 25, 2025 (1y ago) · Effective · · official filing →
155
Layoff
Corona, California
Filed Sep 26, 2024 (2y ago) · Effective Nov 25, 2024 · official filing →
40
Closure
Corona, California
Filed Sep 29, 2020 (6y ago) · Effective Oct 23, 2020 · official filing →
350
Layoff
Corona, California
Filed Oct 3, 2019 (7y ago) · Effective Dec 23, 2019 · official filing →
400
Closure
Corona, California
Filed Oct 18, 2018 (8y ago) · Effective Dec 26, 2018 · official filing →
1
Closure
REMOTE · SLIVER

Questions

Is Thermal Structures laying off employees?

Not according to official filings. There is no WARN layoff notice from Thermal Structures in the last 12 months. The most recent was filed Sep 2, 2025 for 447 jobs in Corona, California. WARN covers larger layoffs only, so smaller cuts may not appear.

How many jobs is Thermal Structures cutting?

1,393 jobs across all 6 official WARN filings on record since 2018, in 2 states.

When do the Thermal Structures layoffs take effect?

The most recent filing lists an effective date of Nov 24, 2025. The WARN Act requires roughly 60 days' advance notice, so the filing date precedes the job losses.

Is Thermal Structures on a list you care about?

Paste your suppliers, customers or holdings at /monitor and see which of them have filed a layoff that has not happened yet. A WARN notice is filed about 60 days before the jobs go, so those are still ahead of you. Free to check, no account, and we do not store your list.

Watching Thermal Structures?

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