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            <filer>
                <filerCredentials>
                    <cik>0001648181</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0000791963</issuerCik>
            <issuerName>OPPENHEIMER HOLDINGS INC.</issuerName>
            <secFileNumber>001-12043</secFileNumber>
            <issuerAddress>
                <ns2:street1>85 BROAD STREET</ns2:street1>
                <ns2:city>New York</ns2:city>
                <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                <ns2:zipCode>10004</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>2126688255</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>PAUL M. FRIEDMAN LIVING TRUST</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Class A 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>3500</noOfUnitsSold>
            <aggregateMarketValue>221620.70</aggregateMarketValue>
            <noOfUnitsOutstanding>10425830</noOfUnitsOutstanding>
            <approxSaleDate>06/09/2025</approxSaleDate>
            <securitiesExchangeName>NYSE</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <acquiredDate>08/23/2018</acquiredDate>
            <natureOfAcquisitionTransaction>Director Compensation</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>875</amountOfSecuritiesAcquired>
            <paymentDate>08/23/2018</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <acquiredDate>03/01/2018</acquiredDate>
            <natureOfAcquisitionTransaction>Director Compensation</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>625</amountOfSecuritiesAcquired>
            <paymentDate>03/01/2018</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <acquiredDate>08/23/2017</acquiredDate>
            <natureOfAcquisitionTransaction>Director Compensation</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>750</amountOfSecuritiesAcquired>
            <paymentDate>08/23/2017</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <acquiredDate>09/01/2018</acquiredDate>
            <natureOfAcquisitionTransaction>Director Compensation</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>250</amountOfSecuritiesAcquired>
            <paymentDate>09/01/2018</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <acquiredDate>07/27/2018</acquiredDate>
            <natureOfAcquisitionTransaction>Director Compensation</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>1000</amountOfSecuritiesAcquired>
            <paymentDate>07/27/2018</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>PAUL M. FRIEDMAN LIVING TRUST</name>
                <address>
                    <ns2:street1>85 BROAD STREET</ns2:street1>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <saleDate>06/06/2025</saleDate>
            <amountOfSecuritiesSold>1000</amountOfSecuritiesSold>
            <grossProceeds>63106.50</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>PAUL M. FRIEDMAN LIVING TRUST</name>
                <address>
                    <ns2:street1>85 BROAD STREET</ns2:street1>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <saleDate>06/06/2025</saleDate>
            <amountOfSecuritiesSold>875</amountOfSecuritiesSold>
            <grossProceeds>55218.19</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>PAUL M. FRIEDMAN LIVING TRUST</name>
                <address>
                    <ns2:street1>85 BROAD STREET</ns2:street1>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <saleDate>06/06/2025</saleDate>
            <amountOfSecuritiesSold>1000</amountOfSecuritiesSold>
            <grossProceeds>63106.50</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>PAUL M. FRIEDMAN LIVING TRUST</name>
                <address>
                    <ns2:street1>85 BROAD STREET</ns2:street1>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <saleDate>06/06/2025</saleDate>
            <amountOfSecuritiesSold>125</amountOfSecuritiesSold>
            <grossProceeds>7888.31</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>06/09/2025</noticeDate>
            <planAdoptionDates/>
            <signature>/s/ Paul Friedman, Trustee</signature>
        </noticeSignature>
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144
0001648181
XXXXXXXX
LIVE
0000791963
OPPENHEIMER HOLDINGS INC.
001-12043
85 BROAD STREET
New York
NY
10004
2126688255
PAUL M. FRIEDMAN LIVING TRUST
Director
Class A Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
3500
221620.70
10425830
06/09/2025
NYSE
Class A Common
08/23/2018
Director Compensation
Issuer
N
875
08/23/2018
Services Rendered
Class A Common
03/01/2018
Director Compensation
Issuer
N
625
03/01/2018
Services Rendered
Class A Common
08/23/2017
Director Compensation
Issuer
N
750
08/23/2017
Services Rendered
Class A Common
09/01/2018
Director Compensation
Issuer
N
250
09/01/2018
Services Rendered
Class A Common
07/27/2018
Director Compensation
Issuer
N
1000
07/27/2018
Services Rendered
N
PAUL M. FRIEDMAN LIVING TRUST
85 BROAD STREET
New York
NY
10004
Class A Common
06/06/2025
1000
63106.50
PAUL M. FRIEDMAN LIVING TRUST
85 BROAD STREET
New York
NY
10004
Class A Common
06/06/2025
875
55218.19
PAUL M. FRIEDMAN LIVING TRUST
85 BROAD STREET
New York
NY
10004
Class A Common
06/06/2025
1000
63106.50
PAUL M. FRIEDMAN LIVING TRUST
85 BROAD STREET
New York
NY
10004
Class A Common
06/06/2025
125
7888.31
06/09/2025
/s/ Paul Friedman, Trustee