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ClearSign Technologies(NASDAQ) CLIR

Current Price$3.35
Market Cap$20.50MMarket cap calculated using publicly traded shares outstanding only. Does not include unlisted, private, or dual-class non-traded shares. Implied market cap may vary.
Since IPO (2012)-92%
5 Year-92%
1 Year-45%
1 Month-13%
ClearSign Technologies last closing stock price
MetricPriceDate
Last closeUSD 3.252026-07-22
ClearSign Technologies stock price return by period
PeriodPrice returnPrice at period startPeriod start date
1 week-12.63%USD 3.722026-07-15
1 month-12.63%USD 3.722026-06-22
3 month-37.02%USD 5.162026-04-23
Year to date-41.56%USD 5.562025-12-31
1 year-45.38%USD 5.952025-07-22
3 year-75.93%USD 13.502023-07-21
5 year-92.49%USD 43.302021-07-23
Since inception-92.26%USD 42.002012-04-25

ClearSign Technologies Financials at a Glance

Market Cap

$20.50MMarket cap calculated using publicly traded shares outstanding only. Does not include unlisted, private, or dual-class non-traded shares. Implied market cap may vary.

Revenue (TTM)

$5.02M

Net Income (TTM)

-$5.61M

EPS (TTM)

-$1.01

P/E Ratio

-3.22

Dividend

$0.00

Beta (Volatility)

1.11 (Average)

Price

$3.35

Volume

10

Open

$3.35

Previous Close

$3.35

Daily Range

$3.35 - $3.35

52-Week Range

$3.16 - $11.20

Estimated Earnings Date

Aug 13, 2026

CLIR News

No articles available.

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About ClearSign Technologies

ClearSign helps factories and refineries lower air pollution from burning fuel. Its burners and sensors make industrial heating safer and more efficient. These products help companies meet strict environmental rules and save on energy costs.

Products and Services

  • Industrial Burners: Burners for factories and refineries, reducing harmful emissions (81% of 2025 revenue from top three customers).
  • Plug & Play Burners: Direct replacements for older refinery heaters, improving efficiency and safety.
  • Flame Sensors: Devices that detect flames in industrial settings, helping prevent accidents.
  • Boiler Burners: Burners for commercial and industrial boilers, targeting energy and institutional clients.
  • Flaring Burners: Burners for safe disposal of excess gases, designed for low emissions.
  • Engineering Services: Consulting, design, and spare parts for combustion systems.

Growth and Expansion

  • Launched co-branded process burner line with Zeeco in December 2024.
  • Expanded product lines with M-Series burners and ClearSign Eye sensor in 2025.
  • Received $1.9 million in U.S. Department of Energy grants for hydrogen burner development in 2025.
  • Partnered with California Boiler and Rogue Combustion for boiler and flare products.
  • Filed dormancy for China operations in March 2025, allowing future reactivation.

What Makes ClearSign Stand Out

ClearSign uses patented technology to cut emissions without extra equipment. Its asset-light model relies on partnerships, reducing costs and speeding up product delivery. The company focuses on meeting strict U.S. environmental standards, especially in California and Texas.

Five Things You Need to Know

  • Revenue was $5.23 million in 2025, up 45.6% from 2024.
  • Gross profit reached $1.42 million in 2025, up 27.4% year-over-year.
  • Net loss was $(5.50) million in 2025, up 3.8% from 2024.
  • Cash position was $9.18 million at December 31, 2025, down from $14.04 million in 2024.

Bottom Line

ClearSign has grown by expanding its product lines and forming key partnerships. The company remains focused on emission reduction and energy efficiency for industrial clients.

AI Generated • Apr 16, 2026

Industry

Machinery

Employees

15

CEO

Colin James Deller, PhD, MBA

Headquarters

Tulsa, OK 74133, US

CLIR Financials

Key Financial Metrics (TTM)

Gross Margin

16.62%

Operating Margin

-124.68%

Net Income Margin

-111.66%

Return on Equity

-61.23%

Return on Capital

-61.23%

Return on Assets

-57.04%

Earnings Yield

-31.06%

Dividend Yield

0.00%

Payout Ratio

0.00%

Stock Overview

Market Cap

$20.50MMarket cap calculated using publicly traded shares outstanding only. Does not include unlisted, private, or dual-class non-traded shares. Implied market cap may vary.

Shares Outstanding

6.31M

Volume

10

Avg. Volume

15.49K

Financials (TTM)

Gross Profit

$835.00K

Operating Income

-$6.26M

EBITDA

-$5.45M

Operating Cash Flow

-$4.97M

Capital Expenditure

-$124.00K

Free Cash Flow

-$5.10M

Cash & ST Invst.

$7.74M

Total Debt

$140.00K

ClearSign Technologies Performance Analysis

ClearSign Technologies annual revenue and year-over-year revenue growth by fiscal year
Fiscal yearPeriod endRevenueYoY growth
20222022-12-31USD 374,000-38.4%
20232023-12-31USD 2,403,000542.5%
20242024-12-31USD 3,596,00049.6%
20252025-12-31USD 5,234,00045.6%
ClearSign Technologies sequential (quarter-over-quarter) revenue growth by fiscal quarter
Fiscal quarterPeriod endQoQ growth
Q22025-06-30-66.8%
Q32025-09-30673.7%
Q42025-12-31256.8%
Q12026-03-31-94.8%
ClearSign Technologies annual diluted earnings per share and year-over-year EPS growth by fiscal year
Fiscal yearPeriod endDiluted EPSYoY growth
20222022-12-31USD -1.63-35.5%
20232023-12-31USD -1.35-17.2%
20242024-12-31USD -1.08-19.7%
20252025-12-31USD -0.99-8.6%
ClearSign Technologies sequential (quarter-over-quarter) diluted earnings per share growth by fiscal quarter
Fiscal quarterPeriod endQoQ growth
Q22025-06-3019.4%
Q32025-09-3014.5%
Q42025-12-3181.2%
Q12026-03-31-695.9%

Revenue Growth Rate

Annual and quarterly growth comparison

Earnings Per Share Growth Rate

Annual and quarterly EPS growth comparison

Quarterly Performance

Name
Q1 2026YOY CHG

Revenue

$191.00K

-52.4%

Gross Profit

-$393.00K

-300.5%

Gross Margin

-2.06%

N/A

Market Cap

$20.50MMarket cap calculated using publicly traded shares outstanding only. Does not include unlisted, private, or dual-class non-traded shares. Implied market cap may vary.

N/A

Market Cap/Employee

$1.37M

N/A

Employees

15

N/A

Net Income

-$2.19M

-5.5%

EBITDA

-$2.13M

-5.9%

Quarterly Fundamentals

Name
Q1 2026YOY CHG

Total Cash

$7.74M

-39.9%

Total Debt

$140.00K

-15.7%

Accounts Receivable

$179.00K

-37.2%

Inventory

$0.00

N/A

Long Term Debt

$42.00K

-57.1%

Short Term Debt

$98.00K

+44.1%

Return on Assets

-57.04%

N/A

Return on Invested Capital

-81.71%

N/A

Free Cash Flow

-$1.41M

-22.6%

Operating Cash Flow

-$1.35M

-21.3%

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Questions About CLIR

What is the current price of ClearSign Technologies?

ClearSign Technologies is trading at $3.35 per share.

What is the 52-week range for ClearSign Technologies?

Over the past 52 weeks, ClearSign Technologies has traded between $3.16 and $11.20.

How much debt does ClearSign Technologies have?

As of the most recent reporting period, ClearSign Technologies reported total debt of $140.00K.

How much cash does ClearSign Technologies have on hand?

ClearSign Technologies reported $7.74M in cash and cash equivalents in its most recent financial results.

What is ClearSign Technologies’s dividend yield?

ClearSign Technologies does not currently have a dividend yield.

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