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        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001725125</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001595974</issuerCik>
            <issuerName>MAGNITE, INC.</issuerName>
            <secFileNumber>001-36384</secFileNumber>
            <issuerAddress>
                <ns2:street1>1250 Broadway, 15th Floor</ns2:street1>
                <ns2:city>New York</ns2:city>
                <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                <ns2:zipCode>10001</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>(212) 243-2769</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>ADAM L SOROCA</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>42584</noOfUnitsSold>
            <aggregateMarketValue>1064600.00</aggregateMarketValue>
            <noOfUnitsOutstanding>141110559</noOfUnitsOutstanding>
            <approxSaleDate>07/03/2025</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>07/03/2025</acquiredDate>
            <natureOfAcquisitionTransaction>Stock Option Exercise</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>8329</amountOfSecuritiesAcquired>
            <paymentDate>07/03/2025</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>11/15/2020</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>34255</amountOfSecuritiesAcquired>
            <paymentDate>11/15/2020</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>ADAM SOROCA</name>
                <address>
                    <ns2:street1>1250 Broadway, 15th Floor</ns2:street1>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10001</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>06/24/2025</saleDate>
            <amountOfSecuritiesSold>14261</amountOfSecuritiesSold>
            <grossProceeds>285220.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>ADAM SOROCA</name>
                <address>
                    <ns2:street1>1250 Broadway, 15th Floor</ns2:street1>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10001</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>06/24/2025</saleDate>
            <amountOfSecuritiesSold>3662</amountOfSecuritiesSold>
            <grossProceeds>73240.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>ADAM SOROCA</name>
                <address>
                    <ns2:street1>1250 Broadway, 15th Floor</ns2:street1>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10001</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>06/24/2025</saleDate>
            <amountOfSecuritiesSold>18267</amountOfSecuritiesSold>
            <grossProceeds>365340.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>ADAM SOROCA</name>
                <address>
                    <ns2:street1>1250 Broadway, 15th Floor</ns2:street1>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10001</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>06/24/2025</saleDate>
            <amountOfSecuritiesSold>8329</amountOfSecuritiesSold>
            <grossProceeds>166580.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>ADAM SOROCA</name>
                <address>
                    <ns2:street1>1250 Broadway, 15th Floor</ns2:street1>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10001</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>06/06/2025</saleDate>
            <amountOfSecuritiesSold>8328</amountOfSecuritiesSold>
            <grossProceeds>147405.60</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>ADAM SOROCA</name>
                <address>
                    <ns2:street1>1250 Broadway, 15th Floor</ns2:street1>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10001</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>05/20/2025</saleDate>
            <amountOfSecuritiesSold>8328</amountOfSecuritiesSold>
            <grossProceeds>141576.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>ADAM SOROCA</name>
                <address>
                    <ns2:street1>1250 Broadway, 15th Floor</ns2:street1>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10001</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>05/16/2025</saleDate>
            <amountOfSecuritiesSold>11366</amountOfSecuritiesSold>
            <grossProceeds>178823.55</grossProceeds>
        </securitiesSoldInPast3Months>
        <remarks>The securities to be sold were acquired upon the vesting of restricted stock during the period of 11/15/2020 through 11/15/2023.</remarks>
        <noticeSignature>
            <noticeDate>07/03/2025</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>03/07/2025</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Adam Lee Soroca</signature>
        </noticeSignature>
    </formData>
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144
0001725125
XXXXXXXX
LIVE
0001595974
MAGNITE, INC.
001-36384
1250 Broadway, 15th Floor
New York
NY
10001
(212) 243-2769
ADAM L SOROCA
Officer
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
42584
1064600.00
141110559
07/03/2025
NASDAQ
Common
07/03/2025
Stock Option Exercise
ISSUER
N
8329
07/03/2025
Cash
Common
11/15/2020
Restricted Stock
ISSUER
N
34255
11/15/2020
Not Applicable
N
ADAM SOROCA
1250 Broadway, 15th Floor
New York
NY
10001
Common
06/24/2025
14261
285220.00
ADAM SOROCA
1250 Broadway, 15th Floor
New York
NY
10001
Common
06/24/2025
3662
73240.00
ADAM SOROCA
1250 Broadway, 15th Floor
New York
NY
10001
Common
06/24/2025
18267
365340.00
ADAM SOROCA
1250 Broadway, 15th Floor
New York
NY
10001
Common
06/24/2025
8329
166580.00
ADAM SOROCA
1250 Broadway, 15th Floor
New York
NY
10001
Common
06/06/2025
8328
147405.60
ADAM SOROCA
1250 Broadway, 15th Floor
New York
NY
10001
Common
05/20/2025
8328
141576.00
ADAM SOROCA
1250 Broadway, 15th Floor
New York
NY
10001
Common
05/16/2025
11366
178823.55
The securities to be sold were acquired upon the vesting of restricted stock during the period of 11/15/2020 through 11/15/2023.
07/03/2025
03/07/2025
/s/ Adam Lee Soroca