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            <issuerName>RESIDEO TECHNOLOGIES INC</issuerName>
            <secFileNumber>001-38635</secFileNumber>
            <issuerAddress>
                <ns2:street1>16100 N. 71st Street</ns2:street1>
                <ns2:street2>Suite 550</ns2:street2>
                <ns2:city>Scottsdale</ns2:city>
                <ns2:stateOrCountry>AZ</ns2:stateOrCountry>
                <ns2:zipCode>85254</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>9734552200</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold> NINA L. RICHARDSON</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Director</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>5579</noOfUnitsSold>
            <aggregateMarketValue>134342.32</aggregateMarketValue>
            <noOfUnitsOutstanding>148503534</noOfUnitsOutstanding>
            <approxSaleDate>07/07/2025</approxSaleDate>
            <securitiesExchangeName>NYSE</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>11/16/2022</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>5579</amountOfSecuritiesAcquired>
            <paymentDate>11/16/2022</paymentDate>
            <natureOfPayment>N/A</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>07/07/2025</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>11/27/2024</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Nina L. Richardson</signature>
        </noticeSignature>
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144
0001610535
XXXXXXXX
LIVE
0001740332
RESIDEO TECHNOLOGIES INC
001-38635
16100 N. 71st Street
Suite 550
Scottsdale
AZ
85254
9734552200
NINA L. RICHARDSON
Director
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
5579
134342.32
148503534
07/07/2025
NYSE
Common
11/16/2022
Restricted Stock Units
Issuer
N
5579
11/16/2022
N/A
Y
07/07/2025
11/27/2024
/s/ Nina L. Richardson