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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2013-05-22</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001035748</issuerCik>
        <issuerName>CALLIDUS SOFTWARE INC</issuerName>
        <issuerTradingSymbol>CALD</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001265647</rptOwnerCik>
            <rptOwnerName>FIOR RONALD J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CALLIDUS SOFTWARE INC.</rptOwnerStreet1>
            <rptOwnerStreet2>6200 STONERIDGE MALL ROAD, SUITE 500</rptOwnerStreet2>
            <rptOwnerCity>PLEASANTON</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94588</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP, Finance &amp; Ops; CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <remarks>- The Reporting Person ceased to be an officer as of May 22, 2013.</remarks>

    <ownerSignature>
        <signatureName>/s/ Michelle Novotny by power of attorney For: Ronald J. Fior</signatureName>
        <signatureDate>2013-05-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
