ClearSign Technologies Corporation (CLIR) | Investment Case

1. Company Snapshot

1.a. Company Description

ClearSign Technologies Corporation designs and develops products and technologies to enhance operational performance, energy efficiency, emission reduction, safety, and overall cost-effectiveness of industrial and commercial systems in the United States and the People's Republic of China.Its ClearSign Core Burner Technology consists of an industrial burner body and a downstream porous ceramic structure or metal flame stabilizing device; ClearSign Core Plug & Play technology provides direct burner replacement for traditional refinery process heaters; and ClearSign Eye Flame Sensor, an electrical flame sensor for industrial applications.The company also provides ClearSign Core Boiler Burner; and ClearSign Core Flaring Burners technologies.

It serves energy, institutional, commercial and industrial boiler, chemical, and petrochemical industries.The company was formerly known as ClearSign Combustion Corporation and changed its name ClearSign Technologies Corporation in November 2019.ClearSign Technologies Corporation was incorporated in 2008 and is headquartered in Tulsa, Oklahoma.

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1.b. Last Insights on CLIR

Negative drivers behind ClearSign Technologies Corporation's recent performance include industry headwinds in the industrial services sector, which may impact demand for its products. Additionally, the company's recent purchase orders, while positive, may not be enough to offset the challenges in the sector. The company's expansion of its partnership with Zeeco and the award of a federal grant for hydrogen burner solutions are positive developments, but may not have an immediate impact on its financial performance.

1.c. Company Highlights

Last Price	5.12
Change Percentage	2.40%
Open	5.05
Previous Close	5
Market Cap ( Millions)	28
Volume	14246
Year High	11.2
Year Low	3.24
M A 50	5.04
M A 200	6.49

FCF Yield	-17.23%
Dividend Yield	0.00%
ROE	-53.54%
Debt / Equity	1.71%
Net Debt / EBIDTA	166.33%
Price To Book	2.98
Price Earnings Ratio	-5.17
Price To FCF	-5.8
Price To sales	5.29
EV / EBITDA	-3.45

2. ClearSign Technologies: Q4 Surge Amid Margin Pressure and Expanding Pipeline

ClearSign Technologies delivered a robust fourth‑quarter performance, reporting $3.7 million in revenue—an 8‑fold jump from $590 k in the same period last year—while full‑year sales climbed 44% to $5.2 million. Gross profit fell to 27% from 31% due to a warranty accrual, and the company posted a net loss that widened by $197 k, largely attributable to a $746 k legal fee. The firm closed 2025 with $9.2 million in cash and 5.3 million shares outstanding, yielding a P/E of –5.5, P/B of 3.17, P/S of 5.63, and EV/EBITDA of –3.78.

Publication Date: Apr -20

                                    📋 Highlights
                                    Q4 2025 Revenue Surge::
                                                Revenue jumped to $3.7M (from $590K in Q4 2024), driven by a 26-burner order for a Texas petrochemical plant.
Full-Year Revenue Growth::
                                                2025 revenue hit $5.2M (+44% YoY), with process burners as the primary growth driver.
Profitability Challenges::
                                                Gross profit margin fell to 27% (from 31% in 2024) due to warranty accruals; net loss widened by $197K, largely from $746K in legal fees.
Addressable Market Potential::
                                                Targets $420M market by capturing 15% of 28,000 refinery burners in California and Texas.
Strategic Partnerships & Projects::
                                                Collaborates with Zeeco for manufacturing, with key projects like the 26-burner Texas order (October 2025 startup) and 36-burner order in progress, boosting visibility and pipeline.

                                

Revenue Growth

The $3.7 million Q4 haul reflects a 26‑burner order for a Texas petrochemical plant, the largest order in the pipeline. ClearSign’s process‑burner business is gaining traction, with additional 32‑ and 36‑burner contracts underway, signaling a steady uptick in order volume that should sustain revenue momentum.

Margin Compression

Despite top‑line gains, gross margin slipped to 27% from 31% due to a significant warranty accrual. CFO Brent Hinds highlighted that the accrual was a one‑off event, suggesting that margins could rebound as the company stabilizes its cost base and scales production.

Cash Position

With $9.2 million in cash and no debt, ClearSign is well‑positioned to absorb the lumpy revenue profile typical of large industrial orders. The company’s self‑funding model, combined with a strong working‑capital base, mitigates financing risk as projects mature.

Order Pipeline

The firm now boasts a pipeline of roughly 225 burners, including 73 for a major refiner and 10 for another, plus a midstream M‑series backlog of 50 proposals. Two M‑series burners are already operational, validating the product’s reliability and accelerating future revenue streams.

Strategic Partnerships

ClearSign’s alliance with Zeeco, a multibillion‑dollar global manufacturer, provides access to advanced test facilities and a robust supply chain. This partnership underpins the company’s ability to scale production without heavy capital investment, enhancing its competitive advantage.

Valuation Outlook

Given the company’s projected 67.3% revenue growth next year and the sizeable $420 million addressable market, the current P/S of 5.63 appears modest. However, the negative P/E and EV/EBITDA reflect ongoing losses; investors will need to weigh the upside potential against margin risks and legal expenses before committing.

3. NewsRoom

ClearSign Technologies (NASDAQ:CLIR) Stock Crosses Above 50-Day Moving Average – What’s Next?

Apr -24

Source: defenseworld.net

ClearSign Technologies Highlights $40M SCR Savings as Tightening NOx Rules Drive Burner Demand at WTR Conference

Apr -17

Source: defenseworld.net

ClearSign Technologies Corporation Provides Fourth Quarter and Full Year 2025 Update

Apr -09

Source: accessnewswire.com

ClearSign Technologies Corporation to Participate in Water Tower Research Insights Conference on April 15th 2026

Apr -07

Source: accessnewswire.com

ClearSign Technologies Corporation Announces Full Year and Fourth Quarter 2025 Conference Call

Mar -26

Source: accessnewswire.com

ClearSign Reports Successful Sub 5ppm Department of Energy/Small Business Innovation Research Flexible Fuel Burner Testing

Mar -11

Source: accessnewswire.com

ClearSign Technologies Corporation Announces 1-for-10 Reverse Stock Split to be Effective As of March 16, 2026

Mar -10

Source: accessnewswire.com

ClearSign Technologies Corporation (CLIR) Q4 2025 Earnings Call Transcript

Feb -25

Source: seekingalpha.com

4. Business Breakdown

4.a. Revenues by Country

4.b. Revenues by Segment

5. Expected revenues mid-term growth (8.50%)

6. Segments

Combustion System

Expected Growth: 8.5%

ClearSign Technologies' Combustion System growth is driven by increasing adoption in the oil and gas industry, where it enhances efficiency and reduces emissions. Growing demand for clean energy solutions, stringent environmental regulations, and the need for cost-effective operations also contribute to the 8.5% growth rate.

7. Detailed Products

Duplex Burner

A high-temperature burner designed for industrial applications, providing high efficiency and low emissions.

Process Burner

A customized burner designed for specific industrial processes, offering high efficiency and low emissions.

Thermal Oxidizer

A system designed to destroy hazardous air pollutants and volatile organic compounds, ensuring environmental compliance.

Flare System

A system designed to safely and efficiently dispose of waste gases, reducing emissions and ensuring environmental compliance.

Emissions Control System

A system designed to reduce emissions and improve air quality, meeting environmental regulations and standards.

8. ClearSign Technologies Corporation's Porter Forces

Forces Ranking

Threat Of Substitutes

The threat of substitutes for ClearSign Technologies Corporation is moderate due to the presence of alternative technologies and products in the market.

Bargaining Power Of Customers

The bargaining power of customers is low for ClearSign Technologies Corporation due to the company's specialized products and services.

Bargaining Power Of Suppliers

The bargaining power of suppliers is moderate for ClearSign Technologies Corporation due to the presence of multiple suppliers in the market.

Threat Of New Entrants

The threat of new entrants is high for ClearSign Technologies Corporation due to the relatively low barriers to entry in the industry.

Intensity Of Rivalry

The intensity of rivalry is high for ClearSign Technologies Corporation due to the presence of several established competitors in the market.

9. SWOT Analysis

10. Capital Structure

10.a. Balance Sheet

10.b. Weighted Average Cost of capital

	Value
Debt Weight	4.47%
Debt Cost	3.95%
Equity Weight	95.53%
Equity Cost	9.29%
WACC	9.05%
Leverage	4.68%

11. Quality Control: ClearSign Technologies Corporation passed 4 out of 9 key points

Strong Liquidity

Low Debt

Strong Interest Coverage

Healthy Cash Flow

Operating Efficiency

Strong Return On Equity

Consistent Revenue Growth

Consistent Operating Cash Flow Growth

Margin Improvement

12.a Historical Valuation

12.b Price/Earnings Ratio

12.c Margin Valuation

12.d Peers Valuation

Peers Group Analysis

CECO Environmental

A-Score: 4.6/10

Value: 1.8

Growth: 6.0

Quality: 6.8

Yield: 0.0

Momentum: 9.5

Volatility: 3.7

1-Year Total Return ->

Fuel Tech

A-Score: 4.4/10

Value: 7.4

Growth: 2.4

Quality: 4.0

Yield: 0.0

Momentum: 10.0

Volatility: 2.3

1-Year Total Return ->

Energy Recovery

A-Score: 4.3/10

Value: 1.7

Growth: 7.6

Quality: 7.8

Yield: 0.0

Momentum: 4.0

Volatility: 4.7

1-Year Total Return ->

TOMI Environmental Solutions

A-Score: 3.8/10

Value: 6.8

Growth: 3.3

Quality: 3.7

Yield: 0.0

Momentum: 7.0

Volatility: 2.0

1-Year Total Return ->

Air Industries

A-Score: 3.7/10

Value: 10.0

Growth: 2.9

Quality: 5.0

Yield: 0.0

Momentum: 0.5

Volatility: 3.7

1-Year Total Return ->

ClearSign Technologies

A-Score: 3.6/10

Value: 6.7

Growth: 7.4

Quality: 3.7

Yield: 0.0

Momentum: 2.5

Volatility: 1.0

1-Year Total Return ->

Peers Metrics

12.e Scoring ^Insights

12.f DCF ^BETA

Parameters

Short Term Growth

19.08%

Short term Time

10.0

Long-Term Growth

2.00%

WACC

9.05%

ClearSign Technologies Corporation - US1850641028

1. Company Snapshot

1.a. Company Description

1.b. Last Insights on CLIR

1.c. Company Highlights

Weak Momentum

More Volatile

Average Quality

Revenues Beats

Stable Momentum

Average Yield

Revenues Miss

Earnings Beats

Lower Quality

Higher Growth

2. ClearSign Technologies: Q4 Surge Amid Margin Pressure and Expanding Pipeline

Revenue Growth

Margin Compression

Cash Position

Order Pipeline

Strategic Partnerships

Valuation Outlook

3. NewsRoom

4. Business Breakdown

4.a. Revenues by Country

4.b. Revenues by Segment

5. Expected revenues mid-term growth (8.50%)

6. Segments

Combustion System

Expected Growth: 8.5%

7. Detailed Products

Duplex Burner

Process Burner

Thermal Oxidizer

Flare System

Emissions Control System

8. ClearSign Technologies Corporation's Porter Forces

Forces Ranking

Threat Of Substitutes

Bargaining Power Of Customers

Bargaining Power Of Suppliers

Threat Of New Entrants

Intensity Of Rivalry

9. SWOT Analysis

Strength

Weaknesses

Opportunities

Threats

10. Capital Structure

10.a. Balance Sheet

10.b. Weighted Average Cost of capital

11. Quality Control: ClearSign Technologies Corporation passed 4 out of 9 key points

12.a Historical Valuation

12.b Price/Earnings Ratio

12.c Margin Valuation

12.d Peers Valuation

Peers Group Analysis

Peers Metrics

12.e Scoring Insights

12.f DCF BETA

Parameters

Short Term Growth

Short term Time

Long-Term Growth

WACC

Target Price

5.12$

Current Price

5.12$

Potential

-0.00%

Expected Cash-Flows

12.e Scoring ^Insights

12.f DCF ^BETA