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    <headerData>
        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001493307</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001637873</issuerCik>
            <issuerName>ACV Auctions Inc.</issuerName>
            <secFileNumber>001-40256</secFileNumber>
            <issuerAddress>
                <ns2:street1>640 Ellicott St., Suite 321</ns2:street1>
                <ns2:city>Buffalo</ns2:city>
                <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                <ns2:zipCode>14203</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>8005534070</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>WILLIAM ZERELLA</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>32500</noOfUnitsSold>
            <aggregateMarketValue>708500.00</aggregateMarketValue>
            <noOfUnitsOutstanding>158276243</noOfUnitsOutstanding>
            <approxSaleDate>12/30/2024</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>12/30/2024</acquiredDate>
            <natureOfAcquisitionTransaction>Exercise of Stock Options</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>25000</amountOfSecuritiesAcquired>
            <paymentDate>12/30/2024</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/14/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>7500</amountOfSecuritiesAcquired>
            <paymentDate>03/14/2023</paymentDate>
            <natureOfPayment>N/A</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales Plan for WILLIAM ZERELLA</name>
                <address>
                    <ns2:street1>640 Ellicott St., Suite 321</ns2:street1>
                    <ns2:city>Buffalo</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>14203</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>11/26/2024</saleDate>
            <amountOfSecuritiesSold>32500</amountOfSecuritiesSold>
            <grossProceeds>728461.50</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales Plan for WILLIAM ZERELLA</name>
                <address>
                    <ns2:street1>640 Ellicott St., Suite 321</ns2:street1>
                    <ns2:city>Buffalo</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>14203</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>10/15/2024</saleDate>
            <amountOfSecuritiesSold>32500</amountOfSecuritiesSold>
            <grossProceeds>610766.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <remarks>The securities to be sold were acquired upon the vesting of restricted stock units during the period of 03/14/2023 through 06/14/2023.
</remarks>
        <noticeSignature>
            <noticeDate>12/30/2024</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>08/30/2023</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ William Zerella</signature>
        </noticeSignature>
    </formData>
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144
0001493307
XXXXXXXX
LIVE
0001637873
ACV Auctions Inc.
001-40256
640 Ellicott St., Suite 321
Buffalo
NY
14203
8005534070
WILLIAM ZERELLA
Officer
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
32500
708500.00
158276243
12/30/2024
NASDAQ
Common
12/30/2024
Exercise of Stock Options
Issuer
N
25000
12/30/2024
Cash
Common
03/14/2023
Restricted Stock Units
Issuer
N
7500
03/14/2023
N/A
N
10b5-1 Sales Plan for WILLIAM ZERELLA
640 Ellicott St., Suite 321
Buffalo
NY
14203
Common
11/26/2024
32500
728461.50
10b5-1 Sales Plan for WILLIAM ZERELLA
640 Ellicott St., Suite 321
Buffalo
NY
14203
Common
10/15/2024
32500
610766.00
The securities to be sold were acquired upon the vesting of restricted stock units during the period of 03/14/2023 through 06/14/2023.
12/30/2024
08/30/2023
/s/ William Zerella