<SEC-DOCUMENT>0001104659-24-058677.txt : 20240508
<SEC-HEADER>0001104659-24-058677.hdr.sgml : 20240508
<ACCEPTANCE-DATETIME>20240508161553
ACCESSION NUMBER:		0001104659-24-058677
CONFORMED SUBMISSION TYPE:	D
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		<ITEMS>06b
FILED AS OF DATE:		20240508
DATE AS OF CHANGE:		20240508
EFFECTIVENESS DATE:		20240508

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ClearSign Technologies Corp
		CENTRAL INDEX KEY:			0001434524
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		D
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-512725
		FILM NUMBER:		24926313

	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>
<DOCUMENT>
<TYPE>D
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0708</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001434524</cik>
        <entityName>ClearSign Technologies Corp</entityName>
        <issuerAddress>
            <street1>8023 E. 63RD PLACE</street1>
            <street2>SUITE 101</street2>
            <city>TULSA</city>
            <stateOrCountry>OK</stateOrCountry>
            <stateOrCountryDescription>OKLAHOMA</stateOrCountryDescription>
            <zipCode>74133</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>(918) 236-6461</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <issuerPreviousNameList>
            <previousName>ClearSign Combustion Corporation</previousName>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <previousName>CLEARSIGN COMBUSTION CORP</previousName>
        </edgarPreviousNameList>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Colin</firstName>
                <middleName>James</middleName>
                <lastName>Deller</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8023 E. 63rd Place</street1>
                <street2>Suite 101</street2>
                <city>Tulsa</city>
                <stateOrCountry>OK</stateOrCountry>
                <stateOrCountryDescription>OKLAHOMA</stateOrCountryDescription>
                <zipCode>74133</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Chief Executive Officer</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Brent</firstName>
                <lastName>Hinds</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8023 E. 63rd Place</street1>
                <street2>Suite 101</street2>
                <city>Tulsa</city>
                <stateOrCountry>OK</stateOrCountry>
                <stateOrCountryDescription>OKLAHOMA</stateOrCountryDescription>
                <zipCode>74133</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Chief Financial Officer</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Robert</firstName>
                <middleName>T.</middleName>
                <lastName>Hoffman Sr.</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8023 E. 63rd Place</street1>
                <street2>Suite 101</street2>
                <city>Tulsa</city>
                <stateOrCountry>OK</stateOrCountry>
                <stateOrCountryDescription>OKLAHOMA</stateOrCountryDescription>
                <zipCode>74133</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Judith</firstName>
                <middleName>S.</middleName>
                <lastName>Schrecker</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8023 E. 63rd Place</street1>
                <street2>Suite 101</street2>
                <city>Tulsa</city>
                <stateOrCountry>OK</stateOrCountry>
                <stateOrCountryDescription>OKLAHOMA</stateOrCountryDescription>
                <zipCode>74133</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Catharine</firstName>
                <lastName>de Lacy</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8023 E. 63rd Place</street1>
                <street2>Suite 101</street2>
                <city>Tulsa</city>
                <stateOrCountry>OK</stateOrCountry>
                <stateOrCountryDescription>OKLAHOMA</stateOrCountryDescription>
                <zipCode>74133</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>David</firstName>
                <middleName>M.</middleName>
                <lastName>Maley</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>8023 E. 63rd Place</street1>
                <street2>Suite 101</street2>
                <city>Tulsa</city>
                <stateOrCountry>OK</stateOrCountry>
                <stateOrCountryDescription>OKLAHOMA</stateOrCountryDescription>
                <zipCode>74133</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other Technology</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2024-04-23</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
            <isOptionToAcquireType>true</isOptionToAcquireType>
            <isSecurityToBeAcquiredType>true</isSecurityToBeAcquiredType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>Public Ventures, LLC</recipientName>
                <recipientCRDNumber>000042677</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>14135 Midway Road</street1>
                    <street2>Suite G-150</street2>
                    <city>Addison</city>
                    <stateOrCountry>TX</stateOrCountry>
                    <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                    <zipCode>75001</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <state>CA</state>
                    <description>CALIFORNIA</description>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>14425891</totalOfferingAmount>
            <totalAmountSold>4999684</totalAmountSold>
            <totalRemaining>9426207</totalRemaining>
            <clarificationOfResponse>Reflects the sale of common stock, pre-funded warrants and warrants in a private offering for proceeds of $4,999,684 and proceeds of $9,426,207 from the exercise, if any, of such warrants and related placement agent and underwriter warrants.</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>1</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>399975</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse>Reflects a cash fee of 8% of gross proceeds in the offering. Does not include warrants received and included in Item 13 above or a cash fee of 8% of the gross proceeds from the concurrent public offering.</clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>ClearSign Technologies Corp</issuerName>
                <signatureName>/s/ Colin James Deller</signatureName>
                <nameOfSigner>Colin James Deller</nameOfSigner>
                <signatureTitle>Chief Executive Officer</signatureTitle>
                <signatureDate>2024-05-07</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
