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        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001719731</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



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    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001493594</issuerCik>
            <issuerName>MACOM TECHNOLOGY SOLUTIONS HOLDINGS, INC.</issuerName>
            <secFileNumber>001-35451</secFileNumber>
            <issuerAddress>
                <ns2:street1>100 CHELMSFORD STREET</ns2:street1>
                <ns2:city>LOWELL</ns2:city>
                <ns2:stateOrCountry>MA</ns2:stateOrCountry>
                <ns2:zipCode>01851</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>(978) 656-2500</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>DOUGLAS J CARLSON</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 Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>12132</noOfUnitsSold>
            <aggregateMarketValue>1022601.59</aggregateMarketValue>
            <noOfUnitsOutstanding>71208136</noOfUnitsOutstanding>
            <approxSaleDate>11/29/2023</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <acquiredDate>05/14/2021</acquiredDate>
            <natureOfAcquisitionTransaction>Employee Stock Purchase Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>427</amountOfSecuritiesAcquired>
            <paymentDate>05/14/2021</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <acquiredDate>05/13/2022</acquiredDate>
            <natureOfAcquisitionTransaction>Employee Stock Purchase Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>334</amountOfSecuritiesAcquired>
            <paymentDate>05/13/2022</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <acquiredDate>05/12/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Employee Stock Purchase Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>336</amountOfSecuritiesAcquired>
            <paymentDate>05/12/2023</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <acquiredDate>10/27/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>1614</amountOfSecuritiesAcquired>
            <paymentDate>10/27/2023</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <acquiredDate>11/09/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Performance Shares</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>6572</amountOfSecuritiesAcquired>
            <paymentDate>11/09/2023</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <acquiredDate>11/12/2021</acquiredDate>
            <natureOfAcquisitionTransaction>Employee Stock Purchase Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>144</amountOfSecuritiesAcquired>
            <paymentDate>11/12/2021</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <acquiredDate>05/15/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>1780</amountOfSecuritiesAcquired>
            <paymentDate>05/15/2023</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <acquiredDate>10/28/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>925</amountOfSecuritiesAcquired>
            <paymentDate>10/28/2023</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>11/29/2023</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>08/30/2023</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Douglas John Carlson</signature>
        </noticeSignature>
    </formData>
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144
0001719731
XXXXXXXX
LIVE
0001493594
MACOM TECHNOLOGY SOLUTIONS HOLDINGS, INC.
001-35451
100 CHELMSFORD STREET
LOWELL
MA
01851
(978) 656-2500
DOUGLAS J CARLSON
Officer
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
38th Floor
New York
NY
10004
12132
1022601.59
71208136
11/29/2023
NASDAQ
COMMON
05/14/2021
Employee Stock Purchase Plan
ISSUER
N
427
05/14/2021
Cash
COMMON
05/13/2022
Employee Stock Purchase Plan
ISSUER
N
334
05/13/2022
Cash
COMMON
05/12/2023
Employee Stock Purchase Plan
ISSUER
N
336
05/12/2023
Cash
COMMON
10/27/2023
Restricted Stock
ISSUER
N
1614
10/27/2023
Not Applicable
COMMON
11/09/2023
Performance Shares
ISSUER
N
6572
11/09/2023
Not Applicable
COMMON
11/12/2021
Employee Stock Purchase Plan
ISSUER
N
144
11/12/2021
Cash
COMMON
05/15/2023
Restricted Stock
ISSUER
N
1780
05/15/2023
Not Applicable
COMMON
10/28/2023
Restricted Stock
ISSUER
N
925
10/28/2023
Not Applicable
Y
11/29/2023
08/30/2023
/s/ Douglas John Carlson