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    <headerData>
        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001814777</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <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>JOO MI KIM </nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <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>1479</noOfUnitsSold>
            <aggregateMarketValue>272446.59</aggregateMarketValue>
            <noOfUnitsOutstanding>36785464</noOfUnitsOutstanding>
            <approxSaleDate>01/05/2024</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>01/01/2024</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>1479</amountOfSecuritiesAcquired>
            <paymentDate>01/01/2024</paymentDate>
            <natureOfPayment>N/A</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for JOO MI KIM TODSUBJECT TO STA RULES201 MARSHALL ST</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>12/05/2023</saleDate>
            <amountOfSecuritiesSold>629</amountOfSecuritiesSold>
            <grossProceeds>116329.03</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for JOO MI KIM TODSUBJECT TO STA RULES201 MARSHALL ST</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>11/28/2023</saleDate>
            <amountOfSecuritiesSold>1598</amountOfSecuritiesSold>
            <grossProceeds>288308.45</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for JOO MI KIM TODSUBJECT TO STA RULES201 MARSHALL ST</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>11/27/2023</saleDate>
            <amountOfSecuritiesSold>5000</amountOfSecuritiesSold>
            <grossProceeds>905363.74</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>01/05/2024</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>08/28/2023</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Joo Mi Kim</signature>
        </noticeSignature>
    </formData>
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144
0001814777
XXXXXXXX
LIVE
0001107843
QUALYS INC COM
001-35662
919 E. Hillsdale Boulevard, 4th Floor
Foster City
CA
94404
6508016100
JOO MI KIM
Officer
COMMON
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
38th Fl.
New York
NY
10004
1479
272446.59
36785464
01/05/2024
NASDAQ
Common
01/01/2024
Restricted Stock Units
Issuer
N
1479
01/01/2024
N/A
N
10b5-1 Sales for JOO MI KIM TODSUBJECT TO STA RULES201 MARSHALL ST
919 E. Hillsdale Boulevard, 4th Floor
Foster City
CA
94404
Common
12/05/2023
629
116329.03
10b5-1 Sales for JOO MI KIM TODSUBJECT TO STA RULES201 MARSHALL ST
919 E. Hillsdale Boulevard, 4th Floor
Foster City
CA
94404
Common
11/28/2023
1598
288308.45
10b5-1 Sales for JOO MI KIM TODSUBJECT TO STA RULES201 MARSHALL ST
919 E. Hillsdale Boulevard, 4th Floor
Foster City
CA
94404
Common
11/27/2023
5000
905363.74
01/05/2024
08/28/2023
/s/ Joo Mi Kim