<SEC-DOCUMENT>0001104659-20-139209-index.html : 20201223
<SEC-HEADER>0001104659-20-139209.hdr.sgml : 20201223
<ACCEPTANCE-DATETIME>20201223171136
ACCESSION NUMBER:		0001104659-20-139209
CONFORMED SUBMISSION TYPE:	424B5
PUBLIC DOCUMENT COUNT:		8
FILED AS OF DATE:		20201223
DATE AS OF CHANGE:		20201223

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ClearSign Technologies Corp
		CENTRAL INDEX KEY:			0001434524
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			WA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		424B5
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-232402
		FILM NUMBER:		201413437

	BUSINESS ADDRESS:	
		STREET 1:		12870 INTERURBAN AVENUE SOUTH
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98168
		BUSINESS PHONE:		(206) 673-4848

	MAIL ADDRESS:	
		STREET 1:		12870 INTERURBAN AVENUE SOUTH
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98168

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CLEARSIGN COMBUSTION CORP
		DATE OF NAME CHANGE:	20080507
</SEC-HEADER>
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<TYPE>424B5
<SEQUENCE>1
<FILENAME>tm2038893-1_424b5.htm
<DESCRIPTION>424B5
<TEXT>
Document 1 - file: tm2038893-1_424b5.htm

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<SEQUENCE>2
<FILENAME>image_001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: image_001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>image_002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: image_002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>image_003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: image_003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>image_004.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: image_004.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>img002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: img002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>img003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: img003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>img004.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: img004.jpg

</DOCUMENT>
</SEC-DOCUMENT>