ClearSign Combustion Corporation

Call us: +1.206.673.4848

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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Form	Description	Date	Format
EFFECT	Notice from the SEC of registration effectiveness	Sep 24, 2018	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.
CORRESP	Correspondence from the Filer to the SEC	Sep 19, 2018	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	Sep 19, 2018	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	Filing by person(s) reporting owned shares of common stock in a public company >5%	Jul 30, 2018	Open Filing by person(s) reporting owned shares of common stock in a public company >5% in HTML.Open Filing by person(s) reporting owned shares of common stock in a public company >5% in DOC file.Open Filing by person(s) reporting owned shares of common stock in a public company >5% in PDF file.Open Filing by person(s) reporting owned shares of common stock in a public company >5% in XLS file.
D	Official notice of an offering of securities that is made without registration under the Securities Act in reliance on an exemption provided by Regulation D and Section 4(6) under the Act	Jul 23, 2018	Open Official notice of an offering of securities that is made without registration under the Securities Act in reliance on an exemption provided by Regulation D and Section 4(6) under the Act in HTML.Open Official notice of an offering of securities that is made without registration under the Securities Act in reliance on an exemption provided by Regulation D and Section 4(6) under the Act in DOC file.Open Official notice of an offering of securities that is made without registration under the Securities Act in reliance on an exemption provided by Regulation D and Section 4(6) under the Act in PDF file.Open Official notice of an offering of securities that is made without registration under the Securities Act in reliance on an exemption provided by Regulation D and Section 4(6) under the Act in XLS file.
SC 13D/A	Amendment to a SC 13D filing	Mar 7, 2018	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.