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

    <schemaVersion>X0609</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-09-11</periodOfReport>

    <notSubjectToSection16>true</notSubjectToSection16>

    <issuer>
        <issuerCik>0001966983</issuerCik>
        <issuerName>LITHIUM AMERICAS CORP.</issuerName>
        <issuerTradingSymbol>LAC</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002045478</rptOwnerCik>
            <rptOwnerName>ZAWADZKI ALEXI ILLYA</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>C/O LITHIUM AMERICAS CORP.</rptOwnerStreet1>
            <rptOwnerStreet2>522 S. ROCK BLVD., SUITE 200</rptOwnerStreet2>
            <rptOwnerCity>RENO</rptOwnerCity>
            <rptOwnerState>NV</rptOwnerState>
            <rptOwnerZipCode>89502</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>false</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>true</isOther>
            <otherText>FORMER VP RESOURCE DEVELOPMENT</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <ownerSignature>
        <signatureName>/s/ Tereza Fonda as attorney-in-fact for Alexi Zawadzki</signatureName>
        <signatureDate>2026-09-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
