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            <secFileNumber>001-33026</secFileNumber>
            <issuerAddress>
                <ns2:street1>1 Commvault Way</ns2:street1>
                <ns2:city>Tinton Falls</ns2:city>
                <ns2:stateOrCountry>NJ</ns2:stateOrCountry>
                <ns2:zipCode>07724</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>(732) 870-4000</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>SANJAY MIRCHANDANI</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
            </relationshipsToIssuer>
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        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>38th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>10996</noOfUnitsSold>
            <aggregateMarketValue>720754.81</aggregateMarketValue>
            <noOfUnitsOutstanding>43973836</noOfUnitsOutstanding>
            <approxSaleDate>05/19/2023</approxSaleDate>
            <securitiesExchangeName>NASD</securitiesExchangeName>
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            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>05/16/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>7791</amountOfSecuritiesAcquired>
            <paymentDate>05/16/2023</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>05/17/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>3205</amountOfSecuritiesAcquired>
            <paymentDate>05/17/2023</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
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            <sellerDetails>
                <name>SANJAY MIRCHANDANI</name>
                <address>
                    <ns2:street1>1 Commvault Way</ns2:street1>
                    <ns2:city>Tinton Falls</ns2:city>
                    <ns2:stateOrCountry>NJ</ns2:stateOrCountry>
                    <ns2:zipCode>07724</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>05/18/2023</saleDate>
            <amountOfSecuritiesSold>7791</amountOfSecuritiesSold>
            <grossProceeds>502540.54</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>SANJAY MIRCHANDANI</name>
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                    <ns2:stateOrCountry>NJ</ns2:stateOrCountry>
                    <ns2:zipCode>07724</ns2:zipCode>
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            <securitiesClassTitle>common</securitiesClassTitle>
            <saleDate>05/17/2023</saleDate>
            <amountOfSecuritiesSold>16873</amountOfSecuritiesSold>
            <grossProceeds>1070896.00</grossProceeds>
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        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>SANJAY MIRCHANDANI</name>
                <address>
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                    <ns2:stateOrCountry>NJ</ns2:stateOrCountry>
                    <ns2:zipCode>07724</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>common</securitiesClassTitle>
            <saleDate>03/08/2023</saleDate>
            <amountOfSecuritiesSold>22358</amountOfSecuritiesSold>
            <grossProceeds>1289946.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>SANJAY MIRCHANDANI</name>
                <address>
                    <ns2:street1>1 Commvault Way</ns2:street1>
                    <ns2:city>Tinton Falls</ns2:city>
                    <ns2:stateOrCountry>NJ</ns2:stateOrCountry>
                    <ns2:zipCode>07724</ns2:zipCode>
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            </sellerDetails>
            <securitiesClassTitle>common</securitiesClassTitle>
            <saleDate>03/07/2023</saleDate>
            <amountOfSecuritiesSold>22358</amountOfSecuritiesSold>
            <grossProceeds>1298530.00</grossProceeds>
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        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>SANJAY MIRCHANDANI</name>
                <address>
                    <ns2:street1>1 Commvault Way</ns2:street1>
                    <ns2:city>Tinton Falls</ns2:city>
                    <ns2:stateOrCountry>NJ</ns2:stateOrCountry>
                    <ns2:zipCode>07724</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>common</securitiesClassTitle>
            <saleDate>03/06/2023</saleDate>
            <amountOfSecuritiesSold>22310</amountOfSecuritiesSold>
            <grossProceeds>1313611.00</grossProceeds>
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        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>SANJAY MIRCHANDANI</name>
                <address>
                    <ns2:street1>1 Commvault Way</ns2:street1>
                    <ns2:city>Tinton Falls</ns2:city>
                    <ns2:stateOrCountry>NJ</ns2:stateOrCountry>
                    <ns2:zipCode>07724</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>common</securitiesClassTitle>
            <saleDate>02/23/2023</saleDate>
            <amountOfSecuritiesSold>1861</amountOfSecuritiesSold>
            <grossProceeds>112930.00</grossProceeds>
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        <securitiesSoldInPast3Months>
            <sellerDetails>
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                    <ns2:zipCode>07724</ns2:zipCode>
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            <saleDate>02/21/2023</saleDate>
            <amountOfSecuritiesSold>2386</amountOfSecuritiesSold>
            <grossProceeds>146144.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>05/19/2023</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>02/03/2023</planAdoptionDate>
            </planAdoptionDates>
            <signature>SANJAY MIRCHANDANI</signature>
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144
0001765820
XXXXXXXX
LIVE
0001169561
COMMVAULT SYSTEMS INC.
001-33026
1 Commvault Way
Tinton Falls
NJ
07724
(732) 870-4000
SANJAY MIRCHANDANI
Officer
Director
Common
Morgan Stanley Smith Barney LLC
1 New York Plaza
38th Floor
New York
NY
10004
10996
720754.81
43973836
05/19/2023
NASD
Common
05/16/2023
Restricted Stock
Issuer
N
7791
05/16/2023
Not Applicable
Common
05/17/2023
Restricted Stock
Issuer
N
3205
05/17/2023
Not Applicable
N
SANJAY MIRCHANDANI
1 Commvault Way
Tinton Falls
NJ
07724
Common
05/18/2023
7791
502540.54
SANJAY MIRCHANDANI
1 Commvault Way
Tinton Falls
NJ
07724
common
05/17/2023
16873
1070896.00
SANJAY MIRCHANDANI
1 Commvault Way
Tinton Falls
NJ
07724
common
03/08/2023
22358
1289946.00
SANJAY MIRCHANDANI
1 Commvault Way
Tinton Falls
NJ
07724
common
03/07/2023
22358
1298530.00
SANJAY MIRCHANDANI
1 Commvault Way
Tinton Falls
NJ
07724
common
03/06/2023
22310
1313611.00
SANJAY MIRCHANDANI
1 Commvault Way
Tinton Falls
NJ
07724
common
02/23/2023
1861
112930.00
SANJAY MIRCHANDANI
1 Commvault Way
Tinton Falls
NJ
07724
common
02/21/2023
2386
146144.00
05/19/2023
02/03/2023
SANJAY MIRCHANDANI