<?xml version="1.0"?><?xml-stylesheet type="text/xsl" href="../4_X02.xsl"?><ownershipDocument>    <schemaVersion>X0303</schemaVersion>    <documentType>4</documentType>    <periodOfReport>2010-04-05</periodOfReport>    <notSubjectToSection16>0</notSubjectToSection16>    <issuer>        <issuerCik>0000748790</issuerCik>        <issuerName>Global Clean Energy Holdings, Inc.</issuerName>        <issuerTradingSymbol>GCEH</issuerTradingSymbol>    </issuer>    <reportingOwner>        <reportingOwnerId>            <rptOwnerCik>0001413582</rptOwnerCik>            <rptOwnerName>Palmer Richard NMN</rptOwnerName>        </reportingOwnerId>        <reportingOwnerAddress>            <rptOwnerStreet1>6033 W. CENTURY BLVD.,</rptOwnerStreet1>            <rptOwnerStreet2>SUITE 895</rptOwnerStreet2>            <rptOwnerCity>LOS ANGELES</rptOwnerCity>            <rptOwnerState>CA</rptOwnerState>            <rptOwnerZipCode>90045</rptOwnerZipCode>            <rptOwnerStateDescription></rptOwnerStateDescription>        </reportingOwnerAddress>        <reportingOwnerRelationship>            <isDirector>1</isDirector>            <isOfficer>1</isOfficer>            <isTenPercentOwner>1</isTenPercentOwner>            <isOther>0</isOther>            <officerTitle>President &amp; CEO</officerTitle>        </reportingOwnerRelationship>    </reportingOwner>    <nonDerivativeTable>        <nonDerivativeTransaction>            <securityTitle>                <value>Common Stock</value>            </securityTitle>            <transactionDate>                <value>2010-04-05</value>            </transactionDate>            <transactionCoding>                <transactionFormType>4</transactionFormType>                <transactionCode>P</transactionCode>                <equitySwapInvolved>0</equitySwapInvolved>            </transactionCoding>            <transactionAmounts>                <transactionShares>                    <value>50895204</value>                </transactionShares>                <transactionPricePerShare>                    <footnoteId id="F1"/>                </transactionPricePerShare>                <transactionAcquiredDisposedCode>                    <value>A</value>                </transactionAcquiredDisposedCode>            </transactionAmounts>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>60030241</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>D</value>                </directOrIndirectOwnership>            </ownershipNature>        </nonDerivativeTransaction>    </nonDerivativeTable>    <footnotes>        <footnote id="F1">Prior to the transaction reported herein, the Reporting Person owned 18.57% of the issued and outstanding membership interests of Mobius Risk Group, LLC, a Texas limited liability company (&quot;Mobius&quot;), which owned shares of the Issuer's common stock.  On April 5, 2010, the Reporting Person closed a transaction pursuant to which he sold to Mobius his 18.57% interest therein in exchange for 50,895,204 shares of the Issuer's common stock held by Mobius, $200,000 in cash and certain additional consideration.  As a result of the foregoing sale, the Reporting Person no longer possesses any ownership interest (directly, indirectly or otherwise) in Mobius.</footnote>    </footnotes>    <ownerSignature>        <signatureName>/s/ Richard Palmer</signatureName>        <signatureDate>2010-04-05</signatureDate>    </ownerSignature></ownershipDocument>
