<SEC-DOCUMENT>0001950047-24-002283.txt : 20240314
<SEC-HEADER>0001950047-24-002283.hdr.sgml : 20240314
<ACCEPTANCE-DATETIME>20240314160812
ACCESSION NUMBER:		0001950047-24-002283
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20240314
DATE AS OF CHANGE:		20240314

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CLEAN HARBORS INC
		CENTRAL INDEX KEY:			0000822818
		STANDARD INDUSTRIAL CLASSIFICATION:	HAZARDOUS WASTE MANAGEMENT [4955]
		ORGANIZATION NAME:           	01 Energy & Transportation
		IRS NUMBER:				042997780
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-34223
		FILM NUMBER:		24750139

	BUSINESS ADDRESS:	
		STREET 1:		42 LONGWATER DRIVE
		STREET 2:		P.O. BOX 9149
		CITY:			NORWELL
		STATE:			MA
		ZIP:			02061-9149
		BUSINESS PHONE:		781-792-5000

	MAIL ADDRESS:	
		STREET 1:		42 LONGWATER DRIVE
		CITY:			NORWELL
		STATE:			MA
		ZIP:			02061-9149

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PRESTON JOHN T
		CENTRAL INDEX KEY:			0000938731
		ORGANIZATION NAME:           	
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		C/O MOLTEN METAL TECHNOLOTY INC
		STREET 2:		400-2 TOTTEN POND ROAD
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02154
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:ns2="http://www.sec.gov/edgar/common">
    <headerData>
        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0000938731</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0000822818</issuerCik>
            <issuerName>CLEAN HARBORS, INC.</issuerName>
            <secFileNumber>001-34223</secFileNumber>
            <issuerAddress>
                <ns2:street1>42 Longwater Drive</ns2:street1>
                <ns2:city>Norwell</ns2:city>
                <ns2:stateOrCountry>MA</ns2:stateOrCountry>
                <ns2:zipCode>02061-9149</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>(781) 792-5000</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>JOHN PRESTON</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Director</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>1913</noOfUnitsSold>
            <aggregateMarketValue>360337.85</aggregateMarketValue>
            <noOfUnitsOutstanding>53940747</noOfUnitsOutstanding>
            <approxSaleDate>03/14/2024</approxSaleDate>
            <securitiesExchangeName>NYSE</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>06/07/2019</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>1913</amountOfSecuritiesAcquired>
            <paymentDate>06/07/2019</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>03/14/2024</noticeDate>
            <planAdoptionDates/>
            <signature>/s/ John Thomas Preston</signature>
        </noticeSignature>
    </formData>
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</SEC-DOCUMENT>
