<SEC-DOCUMENT>0001144204-19-033921-index.html : 20190708
<SEC-HEADER>0001144204-19-033921.hdr.sgml : 20190708
<ACCEPTANCE-DATETIME>20190705200320
ACCESSION NUMBER:		0001144204-19-033921
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20190708
DATE AS OF CHANGE:		20190705

SUBJECT COMPANY:	

	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
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-86820
		FILM NUMBER:		19944126

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SIMMONS JAMES M
		CENTRAL INDEX KEY:			0001238466

	FILING VALUES:
		FORM TYPE:		SC 13D/A
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>tv524851_sc13da.htm
<DESCRIPTION>SC 13D/A
<TEXT>
Document 1 - file: tv524851_sc13da.htm

</DOCUMENT>
</SEC-DOCUMENT>