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    <headerData>
        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001342017</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001069258</issuerCik>
            <issuerName>KRATOS DEFENSE &amp; SECURITY SOLUTIONS, INC.</issuerName>
            <secFileNumber>001-34460</secFileNumber>
            <issuerAddress>
                <ns2:street1>1 Chisholm Trail</ns2:street1>
                <ns2:city>Round Rock</ns2:city>
                <ns2:stateOrCountry>TX</ns2:stateOrCountry>
                <ns2:zipCode>92131</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>(512) 238-9840</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>STACEY ROCK</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>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>4000</noOfUnitsSold>
            <aggregateMarketValue>91846.80</aggregateMarketValue>
            <noOfUnitsOutstanding>150999300</noOfUnitsOutstanding>
            <approxSaleDate>11/01/2024</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <acquiredDate>01/04/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>2521</amountOfSecuritiesAcquired>
            <paymentDate>01/04/2023</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <acquiredDate>01/03/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>1479</amountOfSecuritiesAcquired>
            <paymentDate>01/03/2023</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>STACEY ROCK</name>
                <address>
                    <ns2:street1>1 Chisholm Trail</ns2:street1>
                    <ns2:city>Round Rock</ns2:city>
                    <ns2:stateOrCountry>TX</ns2:stateOrCountry>
                    <ns2:zipCode>92131</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>10/01/2024</saleDate>
            <amountOfSecuritiesSold>4000</amountOfSecuritiesSold>
            <grossProceeds>94694.80</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>STACEY ROCK</name>
                <address>
                    <ns2:street1>1 Chisholm Trail</ns2:street1>
                    <ns2:city>Round Rock</ns2:city>
                    <ns2:stateOrCountry>TX</ns2:stateOrCountry>
                    <ns2:zipCode>92131</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>09/03/2024</saleDate>
            <amountOfSecuritiesSold>4000</amountOfSecuritiesSold>
            <grossProceeds>89615.60</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>11/01/2024</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>05/22/2024</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Stacey Glen Rock</signature>
        </noticeSignature>
    </formData>
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144
0001342017
XXXXXXXX
LIVE
0001069258
KRATOS DEFENSE & SECURITY SOLUTIONS, INC.
001-34460
1 Chisholm Trail
Round Rock
TX
92131
(512) 238-9840
STACEY ROCK
Officer
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
4000
91846.80
150999300
11/01/2024
NASDAQ
COMMON
01/04/2023
Restricted Stock
ISSUER
N
2521
01/04/2023
Not Applicable
COMMON
01/03/2023
Restricted Stock
ISSUER
N
1479
01/03/2023
Not Applicable
N
STACEY ROCK
1 Chisholm Trail
Round Rock
TX
92131
Common
10/01/2024
4000
94694.80
STACEY ROCK
1 Chisholm Trail
Round Rock
TX
92131
Common
09/03/2024
4000
89615.60
11/01/2024
05/22/2024
/s/ Stacey Glen Rock