<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2025-10-16</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001975218</issuerCik>
        <issuerName>Nabors Energy Transition Corp. II</issuerName>
        <issuerTradingSymbol>NETD</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001937147</rptOwnerCik>
            <rptOwnerName>Funicular Funds, LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>601 CALIFORNIA STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1151</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94108</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001699575</rptOwnerCik>
            <rptOwnerName>Cable Car Capital, LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>601 CALIFORNIA STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1151</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94108</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Footnote 1</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001922140</rptOwnerCik>
            <rptOwnerName>Ma-Weaver Jacob</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>601 CALIFORNIA STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1151</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94108</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Footnote 1</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class A Ordinary Shares, $0.0001 par value</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1875115</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <remarks>1. This Form 3 is being filed by Funicular Funds, LP (the &quot;Fund&quot;), its general partner Cable Car Capital, LP (&quot;Cable Car&quot;), and Jacob Ma-Weaver. The Fund, Cable Car, and Mr. Ma-Weaver may each be deemed to beneficially own more than 10% of the Issuer's outstanding shares of Common Stock due to the Fund's ownership. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.</remarks>

    <ownerSignature>
        <signatureName>Jacob Ma-Weaver, Managing Member of the General Partner</signatureName>
        <signatureDate>2025-10-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Jacob Ma-Weaver, Managing Member of the General Partner</signatureName>
        <signatureDate>2025-10-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Jacob Ma-Weaver</signatureName>
        <signatureDate>2025-10-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
