ClearSign Provides Preliminary 2025 Financial Results and Expects Record Fourth Quarter Revenues of Approximately $3.6 Million and Full Year Revenues of Approximately $5.2 Million (Unaudited)

Rhea-AI Summary

ClearSign (NASDAQ:CLIR) provided preliminary, unaudited results for the quarter and year ended December 31, 2025. Q4 2025 revenue is expected to be approximately $3.6 million versus $0.59 million in Q4 2024 (≈+510% YoY). Full-year 2025 revenue is expected to be approximately $5.2 million versus $3.6 million in 2024 (≈+44% YoY).

Management attributed Q4 strength to completion of a 26-burner order for a U.S. Gulf Coast petrochemical facility and broader contributions from testing, engineering, flares, and service work. Results are preliminary, unaudited, and may change pending final adjustments and audit review.

Positive

• Q4 revenue approx. $3.6M (≈+510% YoY)
• FY 2025 revenue approx. $5.2M (≈+44% YoY)
• Completed 26-burner order for U.S. Gulf Coast petrochemical site
• Revenue mix expanded to include testing, engineering, flares, and service

Negative

• Preliminary results are unaudited and may change after final adjustments
• Q4 results materially influenced by a single large order, suggesting potential concentration risk

Key Figures

Q4 2025 revenue $3.6 million Preliminary unaudited revenue vs $590 thousand in Q4 2024

Q4 YoY growth 510% Year-over-year revenue growth for Q4 2025 vs Q4 2024

FY 2025 revenue $5.2 million Preliminary unaudited revenue vs $3.6 million in FY 2024

FY YoY growth 44% Year-over-year revenue growth for fiscal 2025 vs 2024

Burner order size 26 burners Completed order for U.S. Gulf Coast petrochemical facility in Q4 2025

Q3 2025 revenue $1.03 million Revenue reported in Q3 2025 Form 10-Q

Nine-month 2025 net loss $5.19 million Net loss for nine months ended September 30, 2025

Cash & equivalents $10.49 million Cash and cash equivalents as of September 30, 2025

Market Reality Check

$0.7290 Last Close

Volume Volume 258,441 is 1.81x the 20-day average of 142,938, indicating elevated trading interest ahead of prelim results. high

Technical Price at 0.6003 is trading below the 200-day MA of 0.67, reflecting a longer-term downtrend into this earnings update.

Peers on Argus 1 Down

CLIR fell 6.2% while peers were mixed: LIQT up 8.64%, ZONE down 5.55%, CLWT down about 4.16% and in the momentum scanner. The lack of consistent direction across peers suggests CLIR’s move was more stock-specific than sector-driven.

Historical Context

Date	Event	Sentiment	Move	Catalyst
Nov 19	Q3 2025 update	Positive	-4.5%	Multiple engineering and burner orders plus hydrogen-capable burner testing engagement.
Nov 06	Earnings call notice	Neutral	-2.2%	Announcement of Q3 2025 conference call and related investor access details.
Nov 04	M Series burner order	Positive	+1.2%	ClearSign Core M25 burner order for West Texas midstream facility retrofit.
Oct 28	M Series burner order	Positive	+8.6%	M25 burner order for New Mexico gas processing facility NOx reduction project.
Oct 23	Flare burner order	Positive	+14.4%	Fourth low-emission retrofit flare burner engineering order from repeat California customer.

Pattern Detected

Positive operational updates and orders have often seen mixed to divergent short-term price reactions, including notable selloffs after earnings-type news.

Recent Company History

Over the last few months, ClearSign reported multiple commercial wins and operational milestones. In October–November 2025, it secured repeat low-emission flare and M Series burner orders and announced engineering contracts with major energy operators, often tied to midstream and emissions-reduction projects. A Q3 2025 update on orders and hydrogen-capable burner testing on Nov 19, 2025 still saw a negative price reaction. Today’s preliminary record Q4 2025 and full-year revenue update continues this pattern of strong commercial signals against a volatile share response.

Market Pulse Summary

The stock surged +27.9% in the session following this news. A strong positive reaction aligns with the company’s disclosure of record preliminary Q4 2025 and full-year revenues of $3.6 million and $5.2 million, respectively, and robust 510%/44% growth. Historically, earnings-type updates have produced volatile moves, including a -12% reaction to the Q1 2025 update. Investors should weigh this momentum against prior operating losses and dilution potential from outstanding warrants and equity awards.

Key Terms

low-nox burners technical

"our expanded portfolio of low-NOx burners, including our latest Department of Energy-tested"

Low-NOx burners are combustion devices designed to produce heat while emitting much lower levels of nitrogen oxides (NOx), pollutants that contribute to smog and regulatory limits. Think of them like a tuned engine that burns fuel more cleanly to meet air-quality rules. Investors care because installing or selling these burners affects capital spending, operating costs, regulatory compliance, and market demand tied to emissions rules and green-energy initiatives.

hydrogen-capable technical

"Department of Energy-tested, 100% hydrogen-capable flexible fuel process burners, and our new"

Hydrogen-capable describes equipment, infrastructure, or vehicles designed or adaptable to operate using hydrogen fuel in addition to or instead of conventional fuels. Think of it like a kitchen appliance built to accept a new kind of fuel—the feature can extend useful life and avoid costly replacement. For investors, hydrogen-capable assets can lower transition risk, preserve value as regulations and markets shift toward low‑carbon fuels, and open access to emerging hydrogen markets.

flame sensors technical

"along with our advanced flares and flame sensors, strongly positions us in the market."

Flame sensors are devices that detect the presence or absence of a fire by sensing light, heat, or ionization produced by a flame—think of them as a smoke alarm tuned specifically for open flames in industrial equipment. For investors, they matter because reliable flame detection is critical for safety, regulatory compliance, preventing costly shutdowns, avoiding liability and insurance losses, and supporting the ongoing operation of facilities that rely on controlled combustion.

at-the-market program financial

"The company established a new at-the-market program of up to $10.39 million"

An at-the-market program is a way for a company to sell new shares of its stock gradually over time directly into the stock market, rather than all at once. This approach allows the company to raise money as needed while giving investors the opportunity to buy shares at current market prices. It helps manage the timing and price of new stock offerings, providing flexibility for both the company and investors.

restricted stock units financial

"a non‑executive director acquired 24,621 restricted stock units (RSUs) at $0.00"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

redeemable warrants financial

"approximately 15,147,606 shares issuable upon exercise of certain redeemable warrants at $1.05"

A redeemable warrant is a tradable right that lets its holder buy a company’s shares at a fixed price before a set date, but the issuer has the contract power to cancel (redeem) the warrant early under agreed terms. For investors this matters because early redemption can force decision-making, change the timing of when new shares might be created, and affect potential gains or dilution—much like a store coupon that the issuer can cancel by paying you off instead of letting you use it.

pre-funded warrants financial

"pre-funded warrants (2,795,395 at $0.0001), and placement agent warrants"

Pre-funded warrants are financial instruments that give investors the right to purchase a company's stock at a set price, but with most or all of the purchase price paid upfront. They function like a coupon or gift card for stock, allowing investors to buy shares later at a fixed price, which can be beneficial if they want to avoid future price increases. This makes them important for investors seeking flexibility and certainty in their investment plans.

net tangible book value financial

"discloses a net tangible book value per share of $0.18 as of June 30, 2025."

Net tangible book value is the per-share value of a company if you take all its physical assets and cash, subtract what it owes, and ignore intangible items like patents or brand names. Think of it like the cash you’d split among owners if a business sold its furniture and buildings but not its reputation. Investors use it as a conservative benchmark to judge whether a stock is cheaply priced relative to hard, sellable assets.

AI-generated analysis. Not financial advice.

Fourth Quarter Revenues up Approximately 510% Year-over-Year

Full Year Revenues up Approximately 44% Year-over-Year

TULSA, OK / ACCESS Newswire / January 7, 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 safety, and support the use of cleaner fuels including hydrogen, today provides selected preliminary, unaudited financial results for its fourth quarter and year ended December 31, 2025.

Revenues for the fourth quarter are expected to be approximately $3.6 million compared to $590 thousand for the same period in 2024, reflecting a year-over-year revenue growth of approximately 510%, and revenues for the fiscal year ended December 31, 2025 are expected to be approximately $5.2 million compared to $3.6 million for the same period in 2024, reflecting a year-over-year revenue growth of approximately 44%.

"We are pleased to report preliminary record quarterly and full-year results," said Jim Deller, Ph.D., Chief Executive Officer of ClearSign. "Our fourth quarter performance was strengthened by the completion of a significant 26 burner order for installation at a U.S. Gulf Coast facility operated by a petrochemical company client. While we are encouraged by the successful completion of this large order, we are equally glad to see meaningful revenue contributions across multiple product lines and sales channels."

"Fourth quarter revenues also included testing, engineering, flares, and service work, underscoring the continued progression of ClearSign and the growing diversity of our solutions and product mix. As we enter 2026, we believe that our expanded portfolio of low-NOx burners, including our latest Department of Energy-tested, 100% hydrogen-capable flexible fuel process burners, and our new 'M' Series burner line, along with our advanced flares and flame sensors, strongly positions us in the market. As a result, we believe that, with the increase in traction in the industries we serve and the backlog and pipeline of orders we currently have, we are well-positioned to sustain or exceed this growth trajectory in 2026," concluded Dr. Deller.

Preliminary Unaudited Results for the Fourth Quarter and Fiscal Year Ended December 31, 2025
Set forth above are selected estimated preliminary financial results for the fourth quarter and fiscal year ended December 31, 2025. These estimates are based on the information available to the Company at this time. The Company's actual results may vary from the estimated preliminary results presented here due to final adjustments and other developments that may arise between now and the time the financial results for the fiscal year ended December 31, 2025 are finalized. The estimated preliminary financial results have not been audited or reviewed by the Company's independent registered public accounting firm. These estimates should not be viewed as a substitute for our full interim or annual financial statements. Accordingly, you should not place undue reliance on this preliminary data.

About ClearSign Technologies Corporation
ClearSign Technologies Corporation designs and develops products and technologies for the purpose of decarbonization and improving key performance characteristics of industrial and commercial systems, including operational performance, energy efficiency, emission reduction, safety, the use of hydrogen as a fuel and overall cost-effectiveness. Our patented technologies, embedded in established OEM products as ClearSign Core™ and ClearSign Eye™ and other sensing configurations, enhance the performance of combustion systems and fuel safety systems in a broad range of markets, including the energy (upstream oil production and down-stream refining), commercial/industrial boiler, chemical, petrochemical, transport and power industries. For more information, please visit www.clearsign.com.

Cautionary Note on Forward-Looking Statements
All statements in this press release that are not based on historical fact are "forward-looking statements." You can find many (but not all) of these statements by looking for words such as "approximates," "believes," "hopes," "expects," "anticipates," "estimates," "projects," "intends," "plans," "would," "should," "could," "may," "will" or other similar expressions. While management has based any forward-looking statements included in this press release on its current expectations on the Company's strategy, plans, intentions, performance, or future occurrences or results, the information on which such expectations were based may change. These forward-looking statements rely on a number of assumptions concerning future events and are subject to a number of risks, uncertainties and other factors, many of which are outside of the Company's control, that could cause actual results to materially differ from such statements. Such risks, uncertainties and other factors include, but are not limited to, the Company's ability to sustain or exceed its revenue growth from the fiscal year ended December 31, 2025, based on current estimates; the Company's ability to successfully complete engineering and equipment supply orders for its customers; the Company's ability to successfully deliver, install, and meet the performance obligations of the Company's burners in the United States and any other markets the Company may sell products in; the Company's ability to further expand the sale of ultra-low NOx process, flare and boiler burners, and other products it sells; the Company's ability to continue expanding its customer base in the refining industry and midstream market; the Company's ability to effectively compete in the markets it serves; the Company's ability to provide low emissions solutions based on continuously changing air permit requirements at the federal and state level; the Company's ability to obtain purchase orders based on proposals provided to customers and completing such projects in the anticipated timeline; general business and economic conditions; the performance of management and the Company's employees; the Company's ability to obtain financing; whether the Company's technology will be accepted and adopted and other factors identified in the Company's Annual Report on Form 10-K and other periodic and current reports filed with the U.S. Securities and Exchange Commission and available for review at www.sec.gov. Furthermore, the Company operates in a competitive environment where new and unanticipated risks may arise. Accordingly, investors should not place any reliance on forward-looking statements as a prediction of actual results. The Company disclaims any intention to, and, except as may be required by law, undertakes no obligation to, update or revise forward-looking statements to reflect events or circumstances that subsequently occur or of which the Company hereafter become aware.

For further information:

Investor Relations:
Matthew Selinger
Firm IR Group for ClearSign
+1 415-572-8152
mselinger@firmirgroup.com

SOURCE: ClearSign Technologies

View the original press release on ACCESS Newswire

FAQ

What preliminary Q4 2025 revenue did ClearSign (CLIR) report on January 7, 2026?

ClearSign reported preliminary Q4 2025 revenue of approximately $3.6 million.

How much did ClearSign (CLIR) expect full-year 2025 revenue to be?

ClearSign expected full-year 2025 revenue of approximately $5.2 million, up about 44% year-over-year.

What drove ClearSign's Q4 2025 revenue surge for CLIR?

Management cited completion of a 26-burner order for a U.S. Gulf Coast petrochemical facility plus testing, engineering, flares, and service work.

Are ClearSign's January 7, 2026 revenue figures audited?

No; the figures are preliminary and unaudited, and the company said actual results may vary after final adjustments and audit review.

Does ClearSign (CLIR) expect 2026 growth after the reported preliminary results?

Management stated they believe their product portfolio and backlog position them to sustain or exceed the 2025 growth trajectory in 2026.