ClearSign Technologies Corp SEC filings CLIR

ClearSign Technologies Corp has 794 filings in SEC EDGAR's recent list, going back to May 5, 2008. Its latest annual report, Form ARS, was filed on Apr 28, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 14, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Sep 14, 2026 (regulation fd disclosure). The company's fiscal year ends on December 31.

Form Description Filed Period
10-Q Quarterly report Aug 14, 2026 Jun 30, 2026
10-Q Quarterly report May 15, 2026 Mar 31, 2026
10-Q Quarterly report Nov 14, 2025 Sep 30, 2025
10-Q Quarterly report Aug 14, 2025 Jun 30, 2025
10-Q Quarterly report May 15, 2025 Mar 31, 2025
10-Q Quarterly report Nov 14, 2024 Sep 30, 2024
10-Q Quarterly report Aug 14, 2024 Jun 30, 2024
10-Q Quarterly report May 15, 2024 Mar 31, 2024
10-Q Quarterly report Nov 14, 2023 Sep 30, 2023
10-Q Quarterly report Aug 14, 2023 Jun 30, 2023
10-Q Quarterly report May 15, 2023 Mar 31, 2023
10-Q Quarterly report Nov 14, 2022 Sep 30, 2022
10-Q Quarterly report Aug 15, 2022 Jun 30, 2022
10-Q Quarterly report May 16, 2022 Mar 31, 2022
10-Q/A Amended quarterly report Dec 23, 2021 Sep 30, 2021
10-Q/A Amended quarterly report Dec 23, 2021 Jun 30, 2021
10-Q Quarterly report Nov 12, 2021 Sep 30, 2021
10-Q Quarterly report Aug 20, 2021 Jun 30, 2021
10-Q Quarterly report May 17, 2021 Mar 31, 2021
10-Q Quarterly report Nov 13, 2020 Sep 30, 2020
10-Q Quarterly report Aug 14, 2020 Jun 30, 2020
10-Q Quarterly report May 14, 2020 Mar 31, 2020
10-Q Quarterly report Nov 13, 2019 Sep 30, 2019
10-Q Quarterly report Aug 14, 2019 Jun 30, 2019
10-Q Quarterly report May 14, 2019 Mar 31, 2019
10-Q Quarterly report Nov 8, 2018 Sep 30, 2018
10-Q Quarterly report Aug 13, 2018 Jun 30, 2018
10-Q Quarterly report May 10, 2018 Mar 31, 2018
10-Q Quarterly report Nov 9, 2017 Sep 30, 2017
10-Q Quarterly report Aug 14, 2017 Jun 30, 2017
10-Q Quarterly report May 11, 2017 Mar 31, 2017
10-Q Quarterly report Nov 14, 2016 Sep 30, 2016
10-Q Quarterly report Aug 11, 2016 Jun 30, 2016
10-Q Quarterly report May 12, 2016 Mar 31, 2016
10-Q Quarterly report Nov 12, 2015 Sep 30, 2015
10-Q Quarterly report Aug 13, 2015 Jun 30, 2015
10-Q Quarterly report May 14, 2015 Mar 31, 2015
10-Q Quarterly report Nov 13, 2014 Sep 30, 2014
10-Q Quarterly report Aug 12, 2014 Jun 30, 2014
10-Q Quarterly report May 8, 2014 Mar 31, 2014
10-Q Quarterly report Nov 12, 2013 Sep 30, 2013
10-Q Quarterly report Aug 14, 2013 Jun 30, 2013
10-Q Quarterly report May 6, 2013 Mar 31, 2013
10-Q Quarterly report Nov 8, 2012 Sep 30, 2012
10-Q Quarterly report Aug 6, 2012 Jun 30, 2012
10-Q Quarterly report Jun 11, 2012 Mar 31, 2012

Showing 46 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.

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Company profile

Industry
Industrial Instruments For Measurement, Display, and Control (SIC 3823)
Listed as
CLIR (Nasdaq)
Fiscal year ends
December 31
Incorporated in
DE
Headquarters
Tulsa, OK
SEC filer status
Non-accelerated filer, Smaller reporting company
SEC CIK
1434524
Former names
CLEARSIGN COMBUSTION CORP (until Oct 31, 2019)

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Source: SEC EDGAR filings. This is company-reported data, not investment advice.