<SEC-DOCUMENT>0001104659-24-049009-index.html : 20240419
<SEC-HEADER>0001104659-24-049009.hdr.sgml : 20240419
<ACCEPTANCE-DATETIME>20240419060219
ACCESSION NUMBER:		0001104659-24-049009
CONFORMED SUBMISSION TYPE:	424B5
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20240419
DATE AS OF CHANGE:		20240419

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ClearSign Technologies Corp
		CENTRAL INDEX KEY:			0001434524
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		424B5
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-265967
		FILM NUMBER:		24855522

	BUSINESS ADDRESS:	
		STREET 1:		8023 E. 63RD PLACE, SUITE 101
		CITY:			TULSA
		STATE:			OK
		ZIP:			74133
		BUSINESS PHONE:		(918) 236-6461

	MAIL ADDRESS:	
		STREET 1:		8023 E. 63RD PLACE, SUITE 101
		CITY:			TULSA
		STATE:			OK
		ZIP:			74133

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CLEARSIGN COMBUSTION CORP
		DATE OF NAME CHANGE:	20080507
</SEC-HEADER>
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<TYPE>424B5
<SEQUENCE>1
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<DESCRIPTION>424B5
<TEXT>
Document 1 - file: tm2411455d1_424b5.htm

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<SEQUENCE>2
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<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: tm2411455d1_424b5img01.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>tm2411455d1_424b5img02.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: tm2411455d1_424b5img02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>tm2411455d1_424b5img03.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: tm2411455d1_424b5img03.jpg

</DOCUMENT>
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