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            <liveTestFlag>LIVE</liveTestFlag>



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            <issuerName>ADICET BIO, INC.</issuerName>
            <secFileNumber>001-38359</secFileNumber>
            <issuerAddress>
                <ns2:street1>200 Berkeley Street</ns2:street1>
                <ns2:street2>19th Floor</ns2:street2>
                <ns2:city>Boston</ns2:city>
                <ns2:stateOrCountry>MA</ns2:stateOrCountry>
                <ns2:zipCode>02116</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>(650) 503-9095</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>CHEN SCHOR</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
            </relationshipsToIssuer>
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        <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>5500</noOfUnitsSold>
            <aggregateMarketValue>7480.55</aggregateMarketValue>
            <noOfUnitsOutstanding>43066158</noOfUnitsOutstanding>
            <approxSaleDate>09/29/2023</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
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        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>08/04/2022</acquiredDate>
            <natureOfAcquisitionTransaction>Performance Stock Units</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>5500</amountOfSecuritiesAcquired>
            <paymentDate>08/04/2022</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>09/29/2023</noticeDate>
            <planAdoptionDates/>
            <signature>/s/ Chen Schor</signature>
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144
0001340875
XXXXXXXX
LIVE
0001720580
ADICET BIO, INC.
001-38359
200 Berkeley Street
19th Floor
Boston
MA
02116
(650) 503-9095
CHEN SCHOR
Officer
Director
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
38th Floor
New York
NY
10004
5500
7480.55
43066158
09/29/2023
NASDAQ
Common
08/04/2022
Performance Stock Units
Issuer
N
5500
08/04/2022
Cash
Y
09/29/2023
/s/ Chen Schor