ClearSign Combustion Corporation

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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.

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NASDAQCLIR

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NASDAQCLIR

Form	Description	Date	Format
8-K	Report of unscheduled material events or corporate event	Nov 15, 2019	Open Report of unscheduled material events or corporate event in HTML.Open Report of unscheduled material events or corporate event in DOC file.Open Report of unscheduled material events or corporate event in PDF file.Open Report of unscheduled material events or corporate event in XLS file.
10-Q	Quarterly report which provides a continuing view of a company's financial position	Nov 13, 2019	Open Quarterly report which provides a continuing view of a company's financial position in HTML.Open Quarterly report which provides a continuing view of a company's financial position in DOC file.Open Quarterly report which provides a continuing view of a company's financial position in PDF file.Open Quarterly report which provides a continuing view of a company's financial position in XLS file.Open Quarterly report which provides a continuing view of a company's financial position in XBLR Viewer.Open Quarterly report which provides a continuing view of a company's financial position in XBLR file.
4/A	Amendment to a previously filed 4	Oct 31, 2019	Open Amendment to a previously filed 4 in HTML.Open Amendment to a previously filed 4 in DOC file.Open Amendment to a previously filed 4 in PDF file.Open Amendment to a previously filed 4 in XLS file.
4/A	Amendment to a previously filed 4	Oct 31, 2019	Open Amendment to a previously filed 4 in HTML.Open Amendment to a previously filed 4 in DOC file.Open Amendment to a previously filed 4 in PDF file.Open Amendment to a previously filed 4 in XLS file.
4/A	Amendment to a previously filed 4	Oct 31, 2019	Open Amendment to a previously filed 4 in HTML.Open Amendment to a previously filed 4 in DOC file.Open Amendment to a previously filed 4 in PDF file.Open Amendment to a previously filed 4 in XLS file.
4/A	Amendment to a previously filed 4	Oct 31, 2019	Open Amendment to a previously filed 4 in HTML.Open Amendment to a previously filed 4 in DOC file.Open Amendment to a previously filed 4 in PDF file.Open Amendment to a previously filed 4 in XLS file.
4/A	Amendment to a previously filed 4	Oct 31, 2019	Open Amendment to a previously filed 4 in HTML.Open Amendment to a previously filed 4 in DOC file.Open Amendment to a previously filed 4 in PDF file.Open Amendment to a previously filed 4 in XLS file.
8-K	Report of unscheduled material events or corporate event	Sep 27, 2019	Open Report of unscheduled material events or corporate event in HTML.Open Report of unscheduled material events or corporate event in DOC file.Open Report of unscheduled material events or corporate event in PDF file.Open Report of unscheduled material events or corporate event in XLS file.
8-K	Report of unscheduled material events or corporate event	Aug 28, 2019	Open Report of unscheduled material events or corporate event in HTML.Open Report of unscheduled material events or corporate event in DOC file.Open Report of unscheduled material events or corporate event in PDF file.Open Report of unscheduled material events or corporate event in XLS file.
8-K	Report of unscheduled material events or corporate event	Aug 16, 2019	Open Report of unscheduled material events or corporate event in HTML.Open Report of unscheduled material events or corporate event in DOC file.Open Report of unscheduled material events or corporate event in PDF file.Open Report of unscheduled material events or corporate event in XLS file.
10-Q	Quarterly report which provides a continuing view of a company's financial position	Aug 14, 2019	Open Quarterly report which provides a continuing view of a company's financial position in HTML.Open Quarterly report which provides a continuing view of a company's financial position in DOC file.Open Quarterly report which provides a continuing view of a company's financial position in PDF file.Open Quarterly report which provides a continuing view of a company's financial position in XLS file.Open Quarterly report which provides a continuing view of a company's financial position in XBLR Viewer.Open Quarterly report which provides a continuing view of a company's financial position in XBLR file.
EFFECT	Notice from the SEC of registration effectiveness	Jul 15, 2019	Open Notice from the SEC of registration effectiveness in HTML.Open Notice from the SEC of registration effectiveness in DOC file.Open Notice from the SEC of registration effectiveness in PDF file.Open Notice from the SEC of registration effectiveness in XLS file.
8-K	Report of unscheduled material events or corporate event	Jul 10, 2019	Open Report of unscheduled material events or corporate event in HTML.Open Report of unscheduled material events or corporate event in DOC file.Open Report of unscheduled material events or corporate event in PDF file.Open Report of unscheduled material events or corporate event in XLS file.
8-K	Report of unscheduled material events or corporate event	Jul 10, 2019	Open Report of unscheduled material events or corporate event in HTML.Open Report of unscheduled material events or corporate event in DOC file.Open Report of unscheduled material events or corporate event in PDF file.Open Report of unscheduled material events or corporate event in XLS file.
CORRESP	Correspondence from the Filer to the SEC	Jul 10, 2019	Open Correspondence from the Filer to the SEC in HTML.Open Correspondence from the Filer to the SEC in DOC file.Open Correspondence from the Filer to the SEC in PDF file.Open Correspondence from the Filer to the SEC in XLS file.
UPLOAD	Correspondence from the SEC to the Filer	Jul 10, 2019	Open Correspondence from the SEC to the Filer in HTML.Open Correspondence from the SEC to the Filer in DOC file.Open Correspondence from the SEC to the Filer in PDF file.Open Correspondence from the SEC to the Filer in XLS file.
SC 13D/A	Amendment to a SC 13D filing	Jul 5, 2019	Open Amendment to a SC 13D filing in HTML.Open Amendment to a SC 13D filing in DOC file.Open Amendment to a SC 13D filing in PDF file.Open Amendment to a SC 13D filing in XLS file.
4	Statement of changes in beneficial ownership of securities	Jul 3, 2019	Open Statement of changes in beneficial ownership of securities in HTML.Open Statement of changes in beneficial ownership of securities in DOC file.Open Statement of changes in beneficial ownership of securities in PDF file.Open Statement of changes in beneficial ownership of securities in XLS file.
4	Statement of changes in beneficial ownership of securities	Jul 3, 2019	Open Statement of changes in beneficial ownership of securities in HTML.Open Statement of changes in beneficial ownership of securities in DOC file.Open Statement of changes in beneficial ownership of securities in PDF file.Open Statement of changes in beneficial ownership of securities in XLS file.
4	Statement of changes in beneficial ownership of securities	Jul 3, 2019	Open Statement of changes in beneficial ownership of securities in HTML.Open Statement of changes in beneficial ownership of securities in DOC file.Open Statement of changes in beneficial ownership of securities in PDF file.Open Statement of changes in beneficial ownership of securities in XLS file.
4	Statement of changes in beneficial ownership of securities	Jul 3, 2019	Open Statement of changes in beneficial ownership of securities in HTML.Open Statement of changes in beneficial ownership of securities in DOC file.Open Statement of changes in beneficial ownership of securities in PDF file.Open Statement of changes in beneficial ownership of securities in XLS file.
4	Statement of changes in beneficial ownership of securities	Jul 3, 2019	Open Statement of changes in beneficial ownership of securities in HTML.Open Statement of changes in beneficial ownership of securities in DOC file.Open Statement of changes in beneficial ownership of securities in PDF file.Open Statement of changes in beneficial ownership of securities in XLS file.
S-3	Simplified registration form	Jun 27, 2019	Open Simplified registration form in HTML.Open Simplified registration form in DOC file.Open Simplified registration form in PDF file.Open Simplified registration form in XLS file.
8-K	Report of unscheduled material events or corporate event	Jun 12, 2019	Open Report of unscheduled material events or corporate event in HTML.Open Report of unscheduled material events or corporate event in DOC file.Open Report of unscheduled material events or corporate event in PDF file.Open Report of unscheduled material events or corporate event in XLS file.
8-K/A	Amendment to a previously filed 8-K	Jun 4, 2019	Open Amendment to a previously filed 8-K in HTML.Open Amendment to a previously filed 8-K in DOC file.Open Amendment to a previously filed 8-K in PDF file.Open Amendment to a previously filed 8-K in XLS file.
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