CLIRCIK 1434524

ClearSign Technologies Corp

EDGAR filings

Customers

1 active

Suppliers

None disclosed

Largest customer

66%

Birwelco USA Inc · FY to 2025-12-31

Named-customer revenue

$3.5M

1 customer · FY to 2025-12-31

Latest period

Dec 31, 2025

10-K filed 2026-03-31

Band height is the estimated dollar value: the disclosed share × the discloser's revenue for that period (latest full year where available). Thin bands are named without a figure. Click a band to open its filing.

Customers 1

Companies CLIR discloses as major customers, as a share of CLIR revenue. 1 active, 0 lapsed.

Company	% of CLIR revenue	Est. revenue	Period	Trend	Status	Source
Birwelco USA Inc Non-SEC Birwelco USA Inc	66%	$3.5M	FY 2025-12-31	+62.0pp	Active	10-K 2026-03-31
Birwelco USA Inc. (a BIH Group company) accounted for 66% and 4% of our annual revenue for the years ended December 31, 2025 and 2024, respectively. 10-K filed 2026-03-31 Period FY 2025-01-01 to 2025-12-31 (66%), FY 2024-01-01 to 2024-12-31 (4%)Accession 0001104659-26-037699

Unnamed major customers

Disclosed without names in the fiscal year ending 2025-12-31. Identities are not inferred.

Three Customers81%
Two Customer15%
Customer B12%

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