ClearSign Q4 revenue $3.7M record; FY revenue $5.2M +44% YoY

ClearSign Technologies Corp

Q4 2025 revenue $3.7M (record); FY revenue $5.2M, up 44% YoY.
Cash $9.2M at Dec 31, 2025; 5.33M shares outstanding post 1-for-10 reverse split.
Orders for 68 ClearSign Core burners from Gulf Coast and California refiners; also flare order.
Successful DOE/NETL testing of 100% hydrogen-capable ClearSign Core-2 burner.
Backlog includes new heater configurations; management expects continued momentum.

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