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                    <cik>0001629768</cik>
                    <ccc>XXXXXXXX</ccc>
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            <liveTestFlag>LIVE</liveTestFlag>



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        <issuerInfo>
            <issuerCik>0001066605</issuerCik>
            <issuerName>HEIDRICK &amp; STRUGGLES INTERNATIONAL INC.</issuerName>
            <secFileNumber>000-25837</secFileNumber>
            <issuerAddress>
                <ns2:street1>233 S. WACKER DR. STE 4200</ns2:street1>
                <ns2:city>CHICAGO</ns2:city>
                <ns2:stateOrCountry>IL</ns2:stateOrCountry>
                <ns2:zipCode>60606</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>312 496-1200</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>KRISHNAN RAJAGOPALAN</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Former 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>20636</noOfUnitsSold>
            <aggregateMarketValue>678433.26</aggregateMarketValue>
            <noOfUnitsOutstanding>20248494</noOfUnitsOutstanding>
            <approxSaleDate>05/10/2024</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/09/2017</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted stock vesting under a registered plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>2381</amountOfSecuritiesAcquired>
            <paymentDate>03/09/2017</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/12/2018</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted stock vesting under a registered plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>15519</amountOfSecuritiesAcquired>
            <paymentDate>03/12/2018</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>02/09/2004</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted stock vesting under a registered plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>2007</amountOfSecuritiesAcquired>
            <paymentDate>02/09/2004</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/09/2016</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted stock vesting under a registered plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>729</amountOfSecuritiesAcquired>
            <paymentDate>03/09/2016</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>THE KRISHNAN RAJAGOPALAN REV TRUST</name>
                <address>
                    <ns2:street1>233 S. WACKER DR. STE 4200</ns2:street1>
                    <ns2:city>CHICAGO</ns2:city>
                    <ns2:stateOrCountry>IL</ns2:stateOrCountry>
                    <ns2:zipCode>60606</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>03/08/2024</saleDate>
            <amountOfSecuritiesSold>26603</amountOfSecuritiesSold>
            <grossProceeds>881413.26</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>THE KRISHNAN RAJAGOPALAN REV TRUST</name>
                <address>
                    <ns2:street1>233 S. WACKER DR. STE 4200</ns2:street1>
                    <ns2:city>CHICAGO</ns2:city>
                    <ns2:stateOrCountry>IL</ns2:stateOrCountry>
                    <ns2:zipCode>60606</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>03/07/2024</saleDate>
            <amountOfSecuritiesSold>2597</amountOfSecuritiesSold>
            <grossProceeds>85748.27</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>THE KRISHNAN RAJAGOPALAN REV TRUST</name>
                <address>
                    <ns2:street1>233 S. WACKER DR. STE 4200</ns2:street1>
                    <ns2:city>CHICAGO</ns2:city>
                    <ns2:stateOrCountry>IL</ns2:stateOrCountry>
                    <ns2:zipCode>60606</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>03/04/2024</saleDate>
            <amountOfSecuritiesSold>800</amountOfSecuritiesSold>
            <grossProceeds>27254.64</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>05/10/2024</noticeDate>
            <planAdoptionDates/>
            <signature>/s/ Krishnan Rajagopalan</signature>
        </noticeSignature>
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144
0001629768
XXXXXXXX
LIVE
0001066605
HEIDRICK & STRUGGLES INTERNATIONAL INC.
000-25837
233 S. WACKER DR. STE 4200
CHICAGO
IL
60606
312 496-1200
KRISHNAN RAJAGOPALAN
Former Officer
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
20636
678433.26
20248494
05/10/2024
NASDAQ
Common
03/09/2017
Restricted stock vesting under a registered plan
Issuer
N
2381
03/09/2017
Not Applicable
Common
03/12/2018
Restricted stock vesting under a registered plan
Issuer
N
15519
03/12/2018
Not Applicable
Common
02/09/2004
Restricted stock vesting under a registered plan
Issuer
N
2007
02/09/2004
Not Applicable
Common
03/09/2016
Restricted stock vesting under a registered plan
Issuer
N
729
03/09/2016
Not Applicable
N
THE KRISHNAN RAJAGOPALAN REV TRUST
233 S. WACKER DR. STE 4200
CHICAGO
IL
60606
Common
03/08/2024
26603
881413.26
THE KRISHNAN RAJAGOPALAN REV TRUST
233 S. WACKER DR. STE 4200
CHICAGO
IL
60606
Common
03/07/2024
2597
85748.27
THE KRISHNAN RAJAGOPALAN REV TRUST
233 S. WACKER DR. STE 4200
CHICAGO
IL
60606
Common
03/04/2024
800
27254.64
05/10/2024
/s/ Krishnan Rajagopalan