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1 insider bought €1.6M of shares over the last 90 days, the latest filed 24 Jul 2026.
ClearSign Technologies Corp: what insiders have been doing
Every trade that managers of ClearSign Technologies Corp disclose to SEC (Form 4) is tracked on this page. The company sits in the Energy sector and is based in Seattle, United States. It was founded in 2008. The last twelve months, up to 18 October 2026, brought 9 filings signed by 4 insiders.
Not one open-market sale was filed. On the buying side, 2 insiders reported 4 purchases totalling €1.6M. Unlike grants, an open-market purchase is paid for by the insider, at the market price. The buyers include 1 major shareholder and 1 senior executive. One trade stands out by size: a purchase of €1.6M from Pasquesi John M, disclosed on 24 July 2026, or 8.1% of market capitalisation.
For context, the typical company on the same exchange (median of 5,811 companies) published 19 filings over the same period, against 9 filings here. Our records for ClearSign Technologies Corp go back to 2022, with 7 purchases and no sales on the open market in total.
The last insider purchase was made public on 24 July 2026, 86 days ago. The median gap between a trade and its publication by SEC (Form 4) is 4 days. For comparison, the SEC allows two business days to file a Form 4.
In the same sector, recent insider purchases at RGC Resources Inc and Empire Petroleum Corp also feature in our signals. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.
Insider Decl.
24
Thresholds
n/a
Buy Volume
€6M
7 ops. · all time
Sell Volume
n/a
n/a
Who traded when
BuySaleGil Todd Silva3 buys
John M. Pasquesi1 buy
Since the insiders bought
- -38.4%Entry US$3.98 · Close 15 Oct 2026 US$2.45
- -25.3%Entry US$5.33 · Close at T+90 US$3.98
- -39.1%Entry US$9.20 · Close at T+365 US$5.60
Entry is the close on the day after publication, the first price a reader could act on. Prices in the listing currency. Past moves are not a forecast.
Analyst consensus: bullish or bearish?
Analysts rate ClearSign Technologies Corp Strong Buy (bullish), based on 1 analysts. Average price target: US$20.00.
This score ranks the purchase within its own market. A position size is suggested only on the venues of the backtested strategy universe; elsewhere, signals stay on watch. Not investment advice.
Fundamental score
Ranked 23,083 of 24,148 companies
14.9
score / 100
Value7
Quality23
FCF yld-31%
Earn yld-36%
EV/EBITDA·
ROE-52%
Gross mgn27%
Net mgn·
Debt/EBITDA·
Pillars2/3
Transparent value + quality ranking, distinct from the insider signal.
Financial data
as of FY 2025FY ended December 2025 · cache
US$2.45
Analyst consensus
1 analystsStrong buy
US$20.00Target US$20.00(+716%)US$20.00
Income statement
RevenueUS$5.2M
Gross profitUS$1.4M27% margin
EBITDA-US$5.7M-108% margin
Net income-US$5.5M-96.1% margin
Valuation
PER (forward)-4.7x
P/Book1.6x
Beta1.31
Balance sheet & cash
Market capUS$15.5M
Total debtUS$163k
Free Cash Flow-US$4.8M
Debt / Equity1%
Profitability & ownership
ROE-51.7%
ROA-30.1%
% insiders4.7%
% institutions26.0%
Last declaration on 24 July 2026
Declarations24 total
500,000 shares@ US$3.548.09% mcap100.0% of flowCommon StockSEC:0001227099-26-000005:0
Canonical exit: 20 Oct 2026 (T+90)
7,001 shares@ US$5.6160.13% mcap100.0% of flowCommon StockSEC:0001104659-26-049608:0
1,000 shares@ US$5.3190.020% mcap27.3% of flowCommon StockSEC:0001104659-26-049607:0
Canonical exit: 22 Jul 2026 (T+90)
1,000 shares@ US$5.250.020% mcap27.0% of flowCommon StockSEC:0001104659-26-049607:1
Canonical exit: 22 Jul 2026 (T+90)
2,000 shares@ US$4.35545.7% of flowCommon StockSEC:0001104659-26-032244:0
Canonical exit: 14 Jun 2026 (T+90)
210,043 shares0Common StockSEC:0001104659-26-022403:0
56,645 shares0Common StockSEC:0001104659-26-022401:0
9,315 sharesCommon StockSEC:0001104659-26-019278:0
10,127 sharesCommon StockSEC:0001104659-26-010395:0
7,547 sharesCommon StockSEC:0001104659-25-017042:0
100,393 shares0Common StockSEC:0001104659-25-016630:0
51,176 shares0Common StockSEC:0001104659-25-016631:0
2,627 sharesCommon StockSEC:0001104659-25-016240:0
3,350,000 shares@ US$0.9162.1% of flowCommon StockSEC:0001104659-24-075270:0
Canonical exit: 22 Sept 2024 (T+90)
54,519 shares@ US$0.7937.0% of flowCommon StockSEC:0001104659-24-027566:0
21,673 shares@ US$0.79100.0% of flowCommon StockSEC:0001104659-24-027577:0
45,075 shares0Common StockSEC:0001104659-24-027584:0
131,121 shares0Common StockSEC:0001104659-24-027573:0
10,126 sharesCommon StockSEC:0001104659-24-011141:0
1,269,705 shares0Common Stock (CLIR)SEC:0001014108-24-000005:0
109,806 shares0Common StockSEC:0001104659-23-022088:0
59,135 shares0Common StockSEC:0001104659-23-022091:0
1,591,594 shares@ US$1.1137.9% of flowCommon Stock (CLIR)SEC:0001062993-22-016287:0
Canonical exit: 6 Oct 2022 (T+90)
45,000 shares@ US$1.12100.0% of flowCommon StockSEC:0001104659-22-071937:0
Canonical exit: 12 Sept 2022 (T+90)
24 of 24 declarations
About ClearSign Technologies Corp
ClearSign Technologies Corp. is a U.S.-listed industrial technology company traded on the Nasdaq market (NASDAQ: CLIR), not NYSE. Founded in 2008, the company originally started in Seattle and later relocated its headquarters to Tulsa, Oklahoma in 2022. For French-speaking investors, ClearSign should be viewed as a niche environmental and combustion-technology business focused on emissions reduction, process efficiency, and industrial safety rather than as a broad-based energy OEM. ([clearsign.com](https://clearsign.com/about-clearsign/?utm_source=openai))
ClearSign’s core business is built around proprietary combustion and sensing technologies used in industrial equipment. Its flagship platform, ClearSign Core™, is embedded in burners and combustion systems designed to materially reduce NOx emissions while improving thermal efficiency. The company also markets ClearSign Eye™, an electrical flame-sensing solution intended to strengthen safety and control in industrial burner applications. Its product set includes process burners, boiler burners, flare systems, and sensing configurations, with use cases spanning refining, petrochemicals, industrial boilers, transport, power, and selected hydrogen-related applications. ([clearsign.com](https://clearsign.com/?utm_source=openai))
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From a competitive standpoint, ClearSign remains a small-cap company competing against much larger combustion-equipment and controls vendors. Its differentiation comes from intellectual property, performance claims around ultra-low NOx combustion, and the ability to integrate its technologies into established OEM product lines rather than building a full industrial equipment franchise from scratch. That model can be attractive in regulated end markets where customers need retrofit-friendly, emissions-compliant solutions and where the push toward lower-carbon fuels, including hydrogen, creates a potential long-term tailwind. ([clearsign.com](https://clearsign.com/clearsign-reports-successful-sub-5ppm-department-of-energy-small-business-innovation-research-flexible-fuel-burner-testing/?utm_source=openai))
Geographically, the business is still primarily U.S.-centered, with offices in Tulsa and Seattle and commercialization efforts focused mainly on North American industrial customers. Its SEC filings also reference a ClearSign Asia subsidiary, indicating that the company has at least some international organizational reach, although the recent commercial narrative remains heavily tied to the United States. ([clearsign.com](https://clearsign.com/about-clearsign/?utm_source=openai))
Recent developments have been important for the investment case. In April 2026, ClearSign reported record fourth-quarter 2025 revenue of $3.7 million and full-year 2025 revenue of $5.2 million, up 44% year over year, while disclosing cash and cash equivalents of about $9.2 million at year-end 2025. During 2025, the company also highlighted new commercial orders, ongoing product traction in California and refinery-related markets, a co-branded process burner line with Zeeco, and a board refresh aimed at supporting the next stage of growth. ([clearsign.com](https://clearsign.com/clearsign-technologies-corporation-provides-fourth-quarter-and-full-year-2025-update/?utm_source=openai))
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