ClearSign Technologies Corporation (CLIR) Stock Analysis

Company Overview

ClearSign Technologies Corporation (CLIR) carries a market capitalisation of $26.62M. It is classified in the Pollution & Treatment Controls industry, within the Industrials sector. The company reports 16 employees.

The 52-week range on file runs from $3.16 to $11.20. CLIR last closed at $3.91 on September 4, 2026. That is −$0.19 (−4.63%) against the previous close. The latest close sits 23.73% above that 52-week low.

Financial Health

In fiscal 2025, ClearSign Technologies Corporation reported revenue of $5.23M. That is +45.55% against the prior fiscal year, when revenue was $3.60M. The same year closed with a net loss of $5.50M. Profit margin runs at −96.07%. That is 96.1 percentage points below the Pollution & Treatment Controls median of 0%. Earnings per share on a trailing basis come to −0.01.

Across the 4 fiscal years on file, revenue moves from $374.00K in 2022 to $5.23M in 2025. Of those 4 years, 0 report positive net income.

Valuation Assessment

The record shows negative trailing earnings, so no price-to-earnings ratio is published. Measured against sales, the shares trade at 4.88 times revenue. On price-to-sales that is 5.86% above the Pollution & Treatment Controls median of 4.61. The medians here are taken across 20 Pollution & Treatment Controls companies that report the metric.

Beta against the wider market is reported at 1.42. Daily returns over the trailing 10 years annualize to a volatility of 112.8%. Over the trailing twelve months the price has returned −32.59%. Across 10 years the annualized return works out at −23.16%.

Growth & Income

No dividend is on file for CLIR.

2026 is still running; the price is −30.18% year to date. The strongest complete calendar year on file is 2020 at +285.53%; the weakest is 2018 at −71.67%. Of the 9 complete calendar years on file, 4 finished higher.