<SEC-DOCUMENT>0001104659-21-003502-index.html : 20210112
<SEC-HEADER>0001104659-21-003502.hdr.sgml : 20210112
<ACCEPTANCE-DATETIME>20210112170049
ACCESSION NUMBER:		0001104659-21-003502
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210110
FILED AS OF DATE:		20210112
DATE AS OF CHANGE:		20210112

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Fike Brian Grant
		CENTRAL INDEX KEY:			0001706465

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35521
		FILM NUMBER:		21524102

	MAIL ADDRESS:	
		STREET 1:		12755 SE 73RD PLACE
		CITY:			NEWCASTLE
		STATE:			WA
		ZIP:			98056-1315

ISSUER:		

	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

	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>4
<SEQUENCE>1
<FILENAME>tm212905-2_4seq1.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
Document 1 - file: tm212905-2_4seq1.html

Document 1 - RAW XML: tm212905-2_4seq1.xml

</DOCUMENT>
</SEC-DOCUMENT>