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CLIRClearSign Technologies Corporation
$4.10$22M
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CLIR logoClearSign Technologies Corporation(CLIR)Earnings, Financials & Key Ratios

CLIR•NASDAQ
$4.10
Price updated Jul 6, 2026
SectorIndustrialsIndustryEnvironmental ServicesSub-IndustryAir and Water Treatment Systems
AboutClearSign 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.Show more
  • Revenue$5M+45.6%
  • EBITDA-$6M+9.0%
  • Net Income-$5M-3.7%
  • EPS (Diluted)-0.99+10.0%
  • Gross Margin27.21%-12.5%
  • EBITDA Margin-108.1%+37.5%
  • Operating Margin-113.39%+37.2%
  • Net Margin-105.01%+28.7%
  • ROE-47.19%+15.6%

CLIR Price & Volume

ClearSign Technologies Corporation (CLIR) stock price & volume — 10-year historical chart

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Persistent Operational Losses Challenge Long-term Viability

Investment Thesis • Updated 2026Q1

VerdictNegative
Growth:Mixed
Profitability:Negative
Financial:Adequate
Cash Flow:Burning
Primary Risk:Persistent operational cash burn

Key Thesis Takeaways

  • ClearSign Technologies faces a precarious outlook as its project-based business model fails to generate consistent revenue, evidenced by a 52.4% revenue contraction in 2026Q1.
  • The company's inability to achieve operating leverage, coupled with a massive $106.7M accumulated deficit, suggests significant long-term solvency risks.
  • Investors should remain cautious as the firm continues to burn through its $7.7M cash reserve without demonstrating a clear path to sustainable profitability.

Verdict Logic

the company's inability to achieve positive operating income, combined with a significant reduction in cash from $16.0M in 2024Q2 to $7.7M in 2026Q1, indicates a high risk of continued shareholder dilution.

CLIR Growth Metrics

ClearSign Technologies Corporation (CLIR) revenue, earnings & EPS growth — 3, 5 & 10-year CAGR

Revenue CAGR

10 Years56.08%
5 Years-
3 Years140.98%
TTM73.54%

Profit CAGR

10 Years-
5 Years-
3 Years-
TTM10.48%

EPS CAGR

10 Years-
5 Years-
3 Years-
TTM18.06%

Return on Capital

10 Years-113.1%
5 Years-69.64%
3 Years-65.67%
Last Year-50.57%

CLIR Recent Earnings

ClearSign Technologies Corporation (CLIR) EPS & revenue vs analyst estimates — last 4 quarters

Full history →
●Beat EPS 5/12 qtrs (42%)●Beat Revenue 2/12 qtrs (18%)
Q2 2026Latest
May 20, 2026
Metric
Actual
Est
EPS
$0.39-34.5%
$0.29
Rev
$191,000-85.0%
$1M
Q2 2026
May 15, 2026
Metric
Actual
Est
EPS
$0.39-34.5%
$0.29
Rev
$191,000-85.0%
$1M
Q2 2026
Apr 9, 2026
Metric
Actual
Est
EPS
$0.01+103.3%
$0.30
Rev
$4M+52.6%
$2M
Q4 2025
Nov 14, 2025
Metric
Actual
Est
EPS
$0.03+25.0%
$0.04
Rev
$1M-57.6%
$2M
QuarterDateEPS (Act vs Est)Revenue (Act vs Est)
Q2 2026LatestMay 20, 2026
$0.39vs $0.29-34.5%
$191,000vs $1M-85.0%
Q2 2026May 15, 2026
$0.39vs $0.29-34.5%
$191,000vs $1M-85.0%
Q2 2026Apr 9, 2026
$0.01vs $0.30+103.3%
$4Mvs $2M+52.6%
Q4 2025Nov 14, 2025
$0.03vs $0.04+25.0%
$1Mvs $2M-57.6%
Based on last 12 quarters of dataView full earnings history →

Latest CLIR News

Recent stock market news and headlines for ClearSign Technologies Corporation (CLIR)

Accesswire·Jun 16, 2026
ClearSign Receives Additional "M1" Series Burner Order for Second Midstream Heater in West Texas

Burner Sold by Heater Manufacturer Tulsa Heaters Midstream TULSA, OK / ACCESS Newswire / June 16, 2026 / ClearSign Technologies Corporation (Nasdaq:CLIR) ("ClearSign" or the "Company"), a leader in advanced combustion and sensing technologies that help industrial operators dramatically reduce emissions, increase efficiency and support the use of cleaner fuels including hydrogen, today announces that it has received another purchase order for a ClearSign Core™ M1 burner, one of its "M" Series process burners. The order came from heater manufacturer Tulsa Heaters Midstream ("THM") and is the second order from this customer within a month.

Peers Comparison

Key metrics vs top competitors for ClearSign Technologies Corporation (CLIR)

Full Screener →
CompanyPriceMarket CapP/E RatioRev Growth (1Y)Net MarginROEDiv Yield
CLIR logoCLIRClearSign Technologies CorporationCurrent
$4.10$22.19M-4.1445.55%-105.01%-47.19%—
FTEK logoFTEKFuel Tech, Inc.
$1.85$57.64M-24.636.14%-11.15%-7.34%—
PESI logoPESIPerma-Fix Environmental Services, Inc.
$14.06$261.02M-18.754.33%-30.06%-34.48%—
CECO logoCECOCECO Environmental Corp.
$80.68$2.89B58.8938.79%2.11%5.45%—
ENVX logoENVXEnovix Corporation
$5.62$1.23B-7.4937.91%-499.64%-0.28%—
CLNE logoCLNEClean Energy Fuels Corp.
$2.13$469.08M-2.112.56%-22.65%-17.17%—

Compare CLIR vs Peers

ClearSign Technologies Corporation (CLIR) vs competitors — business, growth, and fundamentals comparison against the closest industry rivals.

Closest Rival

vs FTEK

Most directly comparable listed peer for CLIR.

Scale Benchmark

vs XOM

Larger-name benchmark to compare CLIR against a more recognizable public peer.

Peer Set

Compare Top 5

vs FTEK, PESI, CECO, ENVX

CLIR SEC Filings & Documents

ClearSign Technologies Corporation (CLIR) SEC filings — annual & quarterly reports (10-K, 10-Q)

8-K Announcements

6
Material company update

May 28, 2026·SEC

Material company update

May 21, 2026·SEC

Material company update

Apr 10, 2026·SEC

10-K Annual Reports

3
FY 2026

Mar 31, 2026·SEC

FY 2025

Mar 31, 2025·SEC

FY 2024

Apr 1, 2024·SEC

10-Q Quarterly Reports

6
FY 2026

May 15, 2026·SEC

FY 2025

Nov 14, 2025·SEC

FY 2025

Aug 14, 2025·SEC

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CLIR Frequently Asked Questions

ClearSign Technologies Corporation (CLIR) stock FAQ — growth, dividends, profitability & financials explained

Growth & Financials
What is ClearSign Technologies Corporation's revenue?

ClearSign Technologies Corporation (CLIR) reported $5.0M in revenue for fiscal year 2025.

How fast is ClearSign Technologies Corporation growing?

ClearSign Technologies Corporation (CLIR) grew revenue by 45.6% over the past year. This is strong growth.

Is CLIR profitable?

ClearSign Technologies Corporation (CLIR) reported a net loss of $5.6M for fiscal year 2025.

Dividend & Returns
What is CLIR's return on equity?

ClearSign Technologies Corporation (CLIR) has a return on equity (ROE) of -47.2%. Negative ROE indicates the company is unprofitable.

What is ClearSign Technologies Corporation's free cash flow?

ClearSign Technologies Corporation (CLIR) had negative free cash flow of $5.0M in fiscal year 2025, likely due to heavy capital investments.

What if you invested $1,000 in CLIR back in 2009?

Total return calculator · dividends reinvested · 17+ years of data

See returns →