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    <headerData>
        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001630922</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001130144</issuerCik>
            <issuerName>SIERRA BANCORP</issuerName>
            <secFileNumber>000-33063</secFileNumber>
            <issuerAddress>
                <ns2:street1>86 North Main Street</ns2:street1>
                <ns2:city>Porterville</ns2:city>
                <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                <ns2:zipCode>93257</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>(559) 782-4900</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>MICHAEL OLAGUE IRA </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>6758</noOfUnitsSold>
            <aggregateMarketValue>196361.76</aggregateMarketValue>
            <noOfUnitsOutstanding>14595719</noOfUnitsOutstanding>
            <approxSaleDate>07/26/2024</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>05/03/2019</acquiredDate>
            <natureOfAcquisitionTransaction>Employee stock unit award(s)</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>14000</amountOfSecuritiesAcquired>
            <paymentDate>05/03/2019</paymentDate>
            <natureOfPayment>Employee stock unit award(s)</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/06/2019</acquiredDate>
            <natureOfAcquisitionTransaction>Employee stock unit award(s)</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>11400</amountOfSecuritiesAcquired>
            <paymentDate>03/06/2019</paymentDate>
            <natureOfPayment>Employee stock unit award(s)</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>MICHAEL OLAGUE</name>
                <address>
                    <ns2:street1>86 North Main Street</ns2:street1>
                    <ns2:city>Porterville</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93257</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Commom</securitiesClassTitle>
            <saleDate>07/25/2024</saleDate>
            <amountOfSecuritiesSold>14088</amountOfSecuritiesSold>
            <grossProceeds>435979.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>Michael Olague</name>
                <address>
                    <ns2:street1>86 North Main Street</ns2:street1>
                    <ns2:city>Porterville</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93257</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>05/09/2024</saleDate>
            <amountOfSecuritiesSold>4753</amountOfSecuritiesSold>
            <grossProceeds>105960.05</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>MICHAEL OLAGUE</name>
                <address>
                    <ns2:street1>86 North Main Street</ns2:street1>
                    <ns2:city>Porterville</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>93257</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>05/09/2024</saleDate>
            <amountOfSecuritiesSold>4753</amountOfSecuritiesSold>
            <grossProceeds>105960.05</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>07/26/2024</noticeDate>
            <planAdoptionDates/>
            <signature>/s/ Michael Olague</signature>
        </noticeSignature>
    </formData>
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144
0001630922
XXXXXXXX
LIVE
0001130144
SIERRA BANCORP
000-33063
86 North Main Street
Porterville
CA
93257
(559) 782-4900
MICHAEL OLAGUE IRA
Officer
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
6758
196361.76
14595719
07/26/2024
NASDAQ
Common
05/03/2019
Employee stock unit award(s)
Issuer
N
14000
05/03/2019
Employee stock unit award(s)
Common
03/06/2019
Employee stock unit award(s)
Issuer
N
11400
03/06/2019
Employee stock unit award(s)
N
MICHAEL OLAGUE
86 North Main Street
Porterville
CA
93257
Commom
07/25/2024
14088
435979.00
Michael Olague
86 North Main Street
Porterville
CA
93257
Common
05/09/2024
4753
105960.05
MICHAEL OLAGUE
86 North Main Street
Porterville
CA
93257
Common
05/09/2024
4753
105960.05
07/26/2024
/s/ Michael Olague