<SEC-DOCUMENT>0001062993-18-003062.txt : 20180730
<SEC-HEADER>0001062993-18-003062.hdr.sgml : 20180730
<ACCEPTANCE-DATETIME>20180730164346
ACCESSION NUMBER:		0001062993-18-003062
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180720
FILED AS OF DATE:		20180730
DATE AS OF CHANGE:		20180730

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			clirSPV LLC
		CENTRAL INDEX KEY:			0001747304
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35521
		FILM NUMBER:		18978149

	BUSINESS ADDRESS:	
		STREET 1:		119 WARREN AVE
		STREET 2:		3RD FLOOR
		CITY:			SPRING LAKE
		STATE:			NJ
		ZIP:			07762-1217
		BUSINESS PHONE:		7322820743

	MAIL ADDRESS:	
		STREET 1:		119 WARREN AVE
		STREET 2:		3RD FLOOR
		CITY:			SPRING LAKE
		STATE:			NJ
		ZIP:			07762-1217

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
		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
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>form3.xml
<DESCRIPTION>INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2018-07-20</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001434524</issuerCik>
        <issuerName>CLEARSIGN COMBUSTION CORP</issuerName>
        <issuerTradingSymbol>CLIR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001747304</rptOwnerCik>
            <rptOwnerName>clirSPV LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>119 WARREN AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>3RD FLOOR</rptOwnerStreet2>
            <rptOwnerCity>SPRING LAKE</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07762</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5213543</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Contractual Right to Purchase Common Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>4</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2018-07-20</value>
            </exerciseDate>
            <expirationDate>
                <value>2019-02-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Contractual Right to Purchase Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>478854</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Notes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">clirSPV LLC (&quot;clirSPV&quot;) is the record holder of the securities reported herein. GPclirSPV LLC (&quot;GPclirSPV&quot;) is the Manager of clirSPV.  Princeton Opportunity Management LLC (&quot;Princeton Opportunity Management&quot;) has an Investment Management Agreement for clirSPV.</footnote>
        <footnote id="F2">Robert T. Hoffman is the Managing Member of GPclirSPV and Princeton Opportunity Management and shares the power to vote and dispose of the securities beneficially owned by clirSPV. As such, each of GPclirSPV, Princeton Opportunity Management and Robert T. Hoffman Sr. may be deemed to have or share beneficial ownership of the Common Stock or Contractual Rights to Purchase Common Stock held directly by clirSPV. Each such entity or individual other than clirSPV disclaims any such beneficial ownership except to the extent of their pecuniary interest therein.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Robert T. Hoffman Sr, Managing Member</signatureName>
        <signatureDate>2018-07-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
