<SEC-DOCUMENT>0001104659-22-105892.txt : 20221004
<SEC-HEADER>0001104659-22-105892.hdr.sgml : 20221004
<ACCEPTANCE-DATETIME>20221004163552
ACCESSION NUMBER:		0001104659-22-105892
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20221003
FILED AS OF DATE:		20221004
DATE AS OF CHANGE:		20221004

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Schrecker Judith S
		CENTRAL INDEX KEY:			0001850679

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35521
		FILM NUMBER:		221292281

	MAIL ADDRESS:	
		STREET 1:		12870 INTERURBAN AVENUE SOUTH
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98168

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) 236-7770

	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
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<DESCRIPTION>OWNERSHIP DOCUMENT
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        <issuerName>ClearSign Technologies Corp</issuerName>
        <issuerTradingSymbol>CLIR</issuerTradingSymbol>
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            <rptOwnerName>Schrecker Judith S</rptOwnerName>
        </reportingOwnerId>
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            <rptOwnerStreet1>8023 E. 63RD PLACE, SUITE 101</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>TULSA</rptOwnerCity>
            <rptOwnerState>OK</rptOwnerState>
            <rptOwnerZipCode>74133</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
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            <securityTitle>
                <value>Options to Purchase Common Stock</value>
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                <value>4.15</value>
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            <exerciseDate>
                <value>2021-07-28</value>
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                <value>2031-07-27</value>
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                <underlyingSecurityTitle>
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    <footnotes>
        <footnote id="F1">As compensation for services as a non-executive director during the quarter ending December 31, 2022, the reporting person was granted restricted stock units (&quot;RSUs&quot;) under the ClearSign Technologies Corporation 2021 Equity Incentive Plan and each RSU represents a right to receive one share of common stock or the cash equivalent thereof.</footnote>
        <footnote id="F2">The RSUs will vest upon the first to occur of: (1) a Change in Control (as defined in the applicable RSU award agreement), (2) the reporting person's Disability (as defined in the applicable RSU award agreement); (3) the reporting peron's death; or (4) the reporting person's separation from service.</footnote>
        <footnote id="F3">As compensation for services as a non-executive director during the quarter ended September 30, 2022, the reporting person was granted RSUs under the ClearSign Technologies Corporation 2021 Equity Incentive Plan and each RSU represents a right to receive one share of common stock or the cash equivalent thereof.</footnote>
        <footnote id="F4">As compensation for services as a non-executive director during the quarter ended June 30, 2022, the reporting person was granted RSUs under the ClearSign Technologies Corporation 2021 Equity Incentive Plan and each RSU represents a right to receive one share of common stock or the cash equivalent thereof.</footnote>
        <footnote id="F5">As compensation for services as a non-executive director during the quarter ended March 31, 2022, the reporting person was granted RSUs under the ClearSign Technologies Corporation 2021 Equity Incentive Plan and each RSU represents a right to receive one share of common stock or the cash equivalent thereof.</footnote>
        <footnote id="F6">As compensation for services as a non-executive director during the quarter ended December 31, 2021, the reporting person was granted RSUs under the ClearSign Technologies Corporation 2021 Equity Incentive Plan and each RSU represents a right to receive one share of common stock or the cash equivalent thereof.</footnote>
        <footnote id="F7">As compensation for services as a non-executive director during the quarter ended September 30, 2021, the reporting person was granted RSUs under the ClearSign Technologies Corporation 2021 Equity Incentive Plan and each RSU represents a right to receive one share of common stock or the cash equivalent thereof.</footnote>
        <footnote id="F8">As compensation for services as a non-executive director during the quarter ended June 30, 2021, the reporting person was granted RSUs under the ClearSign Technologies Corporation 2021 Equity Incentive Plan and each RSU represents a right to receive one share of common stock or the cash equivalent thereof.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Judith S. Schrecker</signatureName>
        <signatureDate>2022-10-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
