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ClearSign Technologies Corp — Investor Relations & Filings

Ticker · CLIR ISIN · US1850641028 LEI · 529900KAAUSQWCW66J95 US Manufacturing
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Filings indexed 761 across all filing types
Latest filing 2026-06-09 Declaration of Voting R…
Country US United States of America
Listing US CLIR

About ClearSign Technologies Corp

https://clearsign.com/

ClearSign Technologies Corp. develops and commercializes emission-control and combustion enhancement technologies for industrial applications. The company's primary offering is the ClearSign Core™ technology platform, which is integrated into a range of products including process burners, boiler burners, and flares. These solutions are designed to achieve ultra-low Nitrogen Oxide (NOx) emissions, enabling operators in the refining, petrochemical, oil and gas, and power generation industries to meet stringent environmental regulations. The technology emphasizes cost-effectiveness, energy efficiency, and the ability to be retrofitted into existing equipment. ClearSign's burners also support fuel flexibility, including the capability to fire hydrogen. Additionally, the company offers the ClearSign Eye™, an electrical flame sensor for industrial use.

Recent filings

Filing Released Lang Actions
FORM 8-K
Declaration of Voting Results & Voting Rights Announcements Classification · 98% confidence The document is a Form 8-K current report filing under the Securities Exchange Act of 1934, specifically Item 5.07 “Submission of Matters to a Vote of Security Holders,” and provides detailed voting results for proposals at the 2026 Annual Meeting. This matches the category for Declaration of Voting Results & Voting Rights Announcements.
2026-06-09 English
FORM 8-K
Capital/Financing Update Classification · 92% confidence The document is a U.S. SEC Form 8-K reporting the entry into a material underwriting agreement and related public offering details—i.e., a financing activity to issue new common shares. It is neither a full annual or quarterly report nor merely a notice of publication; it details capital-raising terms, offering shares, underwriting discounts, and use of proceeds. This matches the ‘Capital/Financing Update’ definition.
2026-06-01 English
424B5
Share Issue/Capital Change Classification · 92% confidence The document is a prospectus supplement filed under SEC Rule 424(b)(5) as part of a shelf registration statement on Form S-3. It details the terms of an offering of 777,780 new common shares, underwriting discounts and commissions, use of proceeds, risk factors, and other information specifically related to this share issuance. This is an announcement and documentation of a new share issue (a capital raising transaction) rather than an earnings release, management discussion, or proxy material. According to the classification definitions, this falls under Share Issue/Capital Change (SHA).
2026-06-01 English
424B5
Capital/Financing Update Classification · 85% confidence The document is a preliminary prospectus supplement on Form 424B5 filed pursuant to Rule 424(b)(5) and relates to an offering of new shares of common stock under an S-3 shelf registration. It provides detailed terms of the equity offering and underwriter arrangements, clearly representing a fundraising transaction. This matches our definition of Capital/Financing Update (CAP) – updates on company fundraising and capital structure changes. It is neither a brief report publication announcement nor a full annual/interim report, and it is not an insider transaction, dividend notice, or other specific category.
2026-05-28 English
FORM 8-K
Regulatory Filings
2026-05-28 English
FORM 8-K
Regulatory Filings Classification · 92% confidence The document is a Form 8-K “Current Report” filed under the Securities Exchange Act of 1934, detailing press release and conference call transcript exhibits (Items 2.02 and 7.01). It does not itself contain full financial statements, nor is it a transcript or a direct earnings release; rather, it is a regulatory filing notifying the SEC of subsequent events and furnishing exhibits. This fits the fallback category for SEC compliance and miscellaneous filings—Regulatory Filings (RNS).
2026-05-21 English

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