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                    <ccc>XXXXXXXX</ccc>
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            <liveTestFlag>LIVE</liveTestFlag>



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        <issuerInfo>
            <issuerCik>0001107843</issuerCik>
            <issuerName>QUALYS INC COM</issuerName>
            <secFileNumber>001-35662</secFileNumber>
            <issuerAddress>
                <ns2:street1> 919 E. Hillsdale Boulevard, 4th Floor</ns2:street1>
                <ns2:city> Foster City</ns2:city>
                <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                <ns2:zipCode>94404</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>6508016100</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>SUMEDH SHRINAND THAKAR</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>38th Fl.</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>15013</noOfUnitsSold>
            <aggregateMarketValue>2596198.09</aggregateMarketValue>
            <noOfUnitsOutstanding>36785464</noOfUnitsOutstanding>
            <approxSaleDate>11/14/2023</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>11/01/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>5263</amountOfSecuritiesAcquired>
            <paymentDate>11/01/2023</paymentDate>
            <natureOfPayment>N/A</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>11/14/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Exercise of Stock Options</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>9750</amountOfSecuritiesAcquired>
            <paymentDate>11/14/2023</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales Plan for SUMEDH SHRINAND THAKAR</name>
                <address>
                    <ns2:street1> 919 E. Hillsdale Boulevard, 4th Floor</ns2:street1>
                    <ns2:city> Foster City</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94404</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>10/16/2023</saleDate>
            <amountOfSecuritiesSold>5005</amountOfSecuritiesSold>
            <grossProceeds>813902.99</grossProceeds>
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            <sellerDetails>
                <name>10b5-1 Sales Plan for SUMEDH SHRINAND THAKAR</name>
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                    <ns2:street1> 919 E. Hillsdale Boulevard, 4th Floor</ns2:street1>
                    <ns2:city> Foster City</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94404</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>09/14/2023</saleDate>
            <amountOfSecuritiesSold>5003</amountOfSecuritiesSold>
            <grossProceeds>763698.44</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>11/14/2023</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>02/28/2023</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Sumedh Shrinand Thakar</signature>
        </noticeSignature>
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144
0001558242
XXXXXXXX
LIVE
0001107843
QUALYS INC COM
001-35662
919 E. Hillsdale Boulevard, 4th Floor
Foster City
CA
94404
6508016100
SUMEDH SHRINAND THAKAR
Director
Officer
COMMON
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
38th Fl.
New York
NY
10004
15013
2596198.09
36785464
11/14/2023
NASDAQ
Common
11/01/2023
Restricted Stock Units
Issuer
N
5263
11/01/2023
N/A
Common
11/14/2023
Exercise of Stock Options
Issuer
N
9750
11/14/2023
Cash
N
10b5-1 Sales Plan for SUMEDH SHRINAND THAKAR
919 E. Hillsdale Boulevard, 4th Floor
Foster City
CA
94404
Common
10/16/2023
5005
813902.99
10b5-1 Sales Plan for SUMEDH SHRINAND THAKAR
919 E. Hillsdale Boulevard, 4th Floor
Foster City
CA
94404
Common
09/14/2023
5003
763698.44
11/14/2023
02/28/2023
/s/ Sumedh Shrinand Thakar