How many insider trades does FilingIQ track for CLIR?

FilingIQ tracks 162 Form 4 insider transactions for CLIR (ClearSign Technologies Corp), covering filings from Mar 18, 2015 onwards. 21 of those were filed in the last 90 days.

Are CLIR insiders net buyers or net sellers?

Across the full Form 4 history for CLIR, 30 transactions (19%) were open-market purchases and 5 (3%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.

Where does CLIR insider data come from?

Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ parses the raw XML, normalises insider identity across reporting variations, and scores each trade on its multi-factor composite model.

What sector is CLIR in?

ClearSign Technologies Corp (CLIR) is classified in the Industrials sector, specifically Pollution & Treatment Controls, with a current market capitalisation of $31.42M.

CLIR insider trading

NasdaqCM Industrials

ClearSign Technologies Corp — scored insider trade history from SEC Form 4 filings, parsed and contextualised by FilingIQ.

Total Form 4 trades

162

Last 90 days

Buys / sells

19% / 3%

Market cap

$31.42M

About ClearSign Technologies Corp

ClearSign Technologies Corporation designs and develops products and technologies for the purpose of decarbonization and improving key performance characteristics of industrial and commercial systems in the United States, the People's Republic of China, and Hong Kong. The company's technologies include ClearSign core burner technology consists of an industrial burner body and a downstream porous ceramic or metal flame stabilizing structure; ClearSign core process burner technology that provides a direct burner replacement for traditional refinery process heaters; ClearSign core boiler burner technology; ClearSign core flaring burners that can be used individually, or in combination, to provide a flare product with extremely low nitrogen oxide emissions; and ClearSign eye flame sensor, an electrical flame sensor for industrial applications. It serves energy, institutional, commercial and industrial boiler, chemical, and petrochemical industries. ClearSign Technologies Corporation was formerly known as ClearSign Combustion Corporation and changed its name to ClearSign Technologies Corporation in November 2019. The company was incorporated in 2008 and is headquartered in Tulsa, Oklahoma.

Company website: www.clearsign.com

CLIR insider activity at a glance

FilingIQ has scored 162 insider transactions for CLIR since Mar 18, 2015. The most recent filing in our index is dated Apr 23, 2026.

Across the full history, 30 open-market purchases and 5 open-market sales were filed under transaction codes P and S respectively. Compensatory share awards (code A) and option exercises (code M) are tracked separately and not counted here.

The average FilingIQ composite score on CLIR insider trades is 48.8/100, produced by FilingIQ's multi-factor Form 4 model. Model framework documented at methodology.

View live CLIR trades on FilingIQ Raw filings on SEC EDGAR

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Frequently asked

How many insider trades does FilingIQ track for CLIR?: FilingIQ tracks 162 Form 4 insider transactions for CLIR (ClearSign Technologies Corp), covering filings from Mar 18, 2015 onwards. 21 of those were filed in the last 90 days.
Are CLIR insiders net buyers or net sellers?: Across the full Form 4 history for CLIR, 30 transactions (19%) were open-market purchases and 5 (3%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.
Where does CLIR insider data come from?: Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ parses the raw XML, normalises insider identity across reporting variations, and scores each trade on its multi-factor composite model.
What sector is CLIR in?: ClearSign Technologies Corp (CLIR) is classified in the Industrials sector, specifically Pollution & Treatment Controls, with a current market capitalisation of $31.42M.

Methodology & sources

Every CLIR insider transaction shown on FilingIQ is parsed directly from a public SEC Form 4 XML filing. Insider identity is normalised across reporting variants (CIK changes, name spellings, related-party indirect holdings). The FilingIQ composite score is documented in full on the team page and algo disclosure. Not investment advice; see disclaimer.