<SEC-DOCUMENT>0001144204-17-044595-index.html : 20170822
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<ACCEPTANCE-DATETIME>20170822160957
ACCESSION NUMBER:		0001144204-17-044595
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170821
FILED AS OF DATE:		20170822
DATE AS OF CHANGE:		20170822

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PIRNAT STEPHEN E
		CENTRAL INDEX KEY:			0001547961

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35521
		FILM NUMBER:		171045272

	MAIL ADDRESS:	
		STREET 1:		4728 EAST 98TH STREET
		CITY:			TULSA
		STATE:			OK
		ZIP:			74137

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CLEARSIGN COMBUSTION CORP
		CENTRAL INDEX KEY:			0001434524
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			WA

	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
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
<FILENAME>v473833_4.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
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Document 1 - RAW XML: v473833_4.xml

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