<SEC-DOCUMENT>0001104659-25-033392.txt : 20250409
<SEC-HEADER>0001104659-25-033392.hdr.sgml : 20250409
<ACCEPTANCE-DATETIME>20250409160523
ACCESSION NUMBER:		0001104659-25-033392
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250409
DATE AS OF CHANGE:		20250409

SUBJECT COMPANY:	

	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
		EIN:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-86820
		FILM NUMBER:		25825220

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PASQUESI JOHN M
		CENTRAL INDEX KEY:			0001227099
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G

	MAIL ADDRESS:	
		STREET 1:		C/O OTTER CAPITAL
		STREET 2:		ONE MARITIME PLAZA SUITE 1400
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94111
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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  <headerData>
    <submissionType>SCHEDULE 13G</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <!-- Field: Pseudo-Tag; ID: Name; Data: PASQUESI JOHN M -->
          <cik>0001227099</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



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  </headerData>
  <formData>
    <coverPageHeader>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>02/14/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0001434524</issuerCik>
        <issuerName>ClearSign Technologies Corporation</issuerName>
        <issuerCusip>185064102</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>8023 E. 63rd Place, Suite 101</com:street1>
          <com:city>Tulsa</com:city>
          <com:stateOrCountry>OK</com:stateOrCountry>
          <com:zipCode>74133</com:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(c)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>John M Pasquesi</reportingPersonName>
      <citizenshipOrOrganization>X1</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>10989774.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>10989774.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>10989774.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>19.99</classPercent>
      <typeOfReportingPerson>IN</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>Otter Capital LLC</reportingPersonName>
      <citizenshipOrOrganization>CA</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>10989774.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>10989774.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>10989774.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>19.99</classPercent>
      <typeOfReportingPerson>OO</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>ClearSign Technologies Corporation</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>8023 E. 63rd Place, Suite 101 Tulsa, OK, 74133</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>John M Pasquesi and Otter Capital LLC are collectively referred to herein as the "Reporting Persons."</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>Otter Capital LLC
PO Box 620067
Woodside, CA 94062</principalBusinessOfficeOrResidenceAddress>
        <citizenship>John M Pasquesi is a citizen of the United States and Otter Capital LLC was formed in the State of California.</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>Y</notApplicableFlag>
      </item3>
      <item4>
        <amountBeneficiallyOwned>As of February 14, 2025, Otter Capital LLC was the record owner of 8,434,774 shares of the Issuer's Common Stock and Private Warrants to purchase up to 6,633,315 shares of Common Stock. The Private Warrants will be exercisable at an exercise price of $1.05 per share and are currently exercisable and will expire 5 years from the date of issuance. Additionally, the Issuer may redeem the Private Warrants once they become exercisable upon 30 days' advance notice if the closing price of the common stock reported equals to or exceeds $2.275 for any 20 business days within a 30 consecutive business-day period, provided that they may only be redeemed if there is an effective registration statement covering the resale of the Private Warrant shares. The Issuer is prohibited from effecting an exercise of any Private Warrants to the extent that such exercise would result in the number of shares of common stock beneficially owned by Otter Capital LLC and its affiliates exceeding 19.99% of the total number of shares of common stock outstanding immediately after giving effect to the exercise.  As such, Private Warrants to purchase up to 2,555,000 shares of Common Stock are exercisable as of February 14, 2025.  Mr. Pasquesi, as the managing and sole member of Otter Capital LLC, has sole voting and dispositive power over the shares of Issuer's Common Stock held by Otter Capital LLC.</amountBeneficiallyOwned>
        <classPercent>Mr. Pasquesi: 19.99% and Otter Capital LLC: 19.99%.  The foregoing percentages are calculated based on 52,418,782 shares of Common Stock represented to be outstanding by the Issuer on March 26, 2025, as reported in the Issuer's Form 10-K for the period ended December 31, 2024.</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>10,989,774</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>0</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>10,989,774</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>0</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>Y</notApplicableFlag>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>Y</notApplicableFlag>
      </item7>
      <item8>
        <notApplicableFlag>Y</notApplicableFlag>
      </item8>
      <item9>
        <notApplicableFlag>Y</notApplicableFlag>
      </item9>
      <item10>
        <notApplicableFlag>N</notApplicableFlag>
        <certifications>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.</certifications>
      </item10>
    </items>
    <exhibitInfo>Exhibit I
Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required on Schedule 13G need be filed with respect to ownership by each of the undersigned of the shares of Common Stock of ClearSign Technologies Corporation.
This Agreement may be executed in any number of counterparts, each of which shall be deemed an original.
Date: April 8, 2025
Otter Capital LLC
By: /s/ John M. Pasquesi
Name: John M. Pasquesi
Title: Managing Member
/s/ John M. Pasquesi
John M. Pasquesi</exhibitInfo>
    <signatureInformation>
      <reportingPersonName>John M Pasquesi</reportingPersonName>
      <signatureDetails>
        <signature>/s/ John M. Pasquesi</signature>
        <title>John M. Pasquesi</title>
        <date>04/08/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Otter Capital LLC</reportingPersonName>
      <signatureDetails>
        <signature>/s/ John M. Pasquesi</signature>
        <title>Managing Member</title>
        <date>04/08/2025</date>
      </signatureDetails>
    </signatureInformation>
  </formData>
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</DOCUMENT>
</SEC-DOCUMENT>
