<SEC-DOCUMENT>0001104659-23-001057-index.html : 20230104
<SEC-HEADER>0001104659-23-001057.hdr.sgml : 20230104
<ACCEPTANCE-DATETIME>20230104202004
ACCESSION NUMBER:		0001104659-23-001057
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20230103
FILED AS OF DATE:		20230104
DATE AS OF CHANGE:		20230104

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HOFFMAN Robert Thurston Sr
		CENTRAL INDEX KEY:			0001748409

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35521
		FILM NUMBER:		23509374

	MAIL ADDRESS:	
		STREET 1:		119 WARREN AVENUE
		CITY:			SPRING LAKE
		STATE:			NJ
		ZIP:			07762

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:		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>4
<SEQUENCE>1
<FILENAME>tm231746-1_4seq1.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
Document 1 - file: tm231746-1_4seq1.html

Document 1 - RAW XML: tm231746-1_4seq1.xml

</DOCUMENT>
</SEC-DOCUMENT>