<SEC-DOCUMENT>0001127602-19-009090.txt : 20190301
<SEC-HEADER>0001127602-19-009090.hdr.sgml : 20190301
<ACCEPTANCE-DATETIME>20190301110517
ACCESSION NUMBER:		0001127602-19-009090
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190227
FILED AS OF DATE:		20190301
DATE AS OF CHANGE:		20190301

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Barbo William D
		CENTRAL INDEX KEY:			0001688104

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15943
		FILM NUMBER:		19647372

	MAIL ADDRESS:	
		STREET 1:		251 BALLARDVALE STREET
		CITY:			WILMINGTON
		STATE:			MA
		ZIP:			01887

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CHARLES RIVER LABORATORIES INTERNATIONAL INC
		CENTRAL INDEX KEY:			0001100682
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH [8731]
		IRS NUMBER:				061397316
		FISCAL YEAR END:			1229

	BUSINESS ADDRESS:	
		STREET 1:		251 BALLARDVALE ST
		CITY:			WILMINGTON
		STATE:			MA
		ZIP:			01887
		BUSINESS PHONE:		781-222-6000

	MAIL ADDRESS:	
		STREET 1:		251 BALLARDVALE ST
		CITY:			WILMINGTON
		STATE:			MA
		ZIP:			01887

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CHARLES RIVER LABORATORIES HOLDINGS INC
		DATE OF NAME CHANGE:	19991208
</SEC-HEADER>
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                <transactionFormType>4</transactionFormType>
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                <sharesOwnedFollowingTransaction>
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                <transactionFormType>4</transactionFormType>
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                <transactionShares>
                    <value>2</value>
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                <directOrIndirectOwnership>
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            <securityTitle>
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                <transactionFormType>4</transactionFormType>
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                <transactionShares>
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                <sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
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            <securityTitle>
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                <transactionFormType>4</transactionFormType>
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                <transactionShares>
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                <sharesOwnedFollowingTransaction>
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        <derivativeTransaction>
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                <value>Stock Options (Right to Buy)</value>
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                <value>2019-02-27</value>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
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            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2158</value>
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                <transactionPricePerShare>
                    <value>0</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            <exerciseDate>
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                <directOrIndirectOwnership>
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            <transactionAmounts>
                <transactionShares>
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                <transactionPricePerShare>
                    <value>0</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            <expirationDate>
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                <underlyingSecurityTitle>
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                <sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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        <derivativeTransaction>
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                <transactionFormType>4</transactionFormType>
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            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>6984</value>
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                <transactionPricePerShare>
                    <value>0</value>
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                    <value>D</value>
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                <directOrIndirectOwnership>
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                <transactionShares>
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                <transactionPricePerShare>
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    <footnotes></footnotes>

    <ownerSignature>
        <signatureName>/s/ William D. Barbo</signatureName>
        <signatureDate>2019-02-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
