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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2014-12-17</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001299130</issuerCik>
        <issuerName>PACIFIC BIOSCIENCES OF CALIFORNIA, INC.</issuerName>
        <issuerTradingSymbol>PACB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001222643</rptOwnerCik>
            <rptOwnerName>ORDONEZ KATHY</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>PACIFIC BIOSCIENCES OF CALIFORNIA, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1380 WILLOW ROAD</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>/s/ Brian Dow, Attorney-in-fact for Kathy Ordonez</signatureName>
        <signatureDate>2014-12-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
