<SEC-DOCUMENT>0001209191-21-038751.txt : 20210607
<SEC-HEADER>0001209191-21-038751.hdr.sgml : 20210607
<ACCEPTANCE-DATETIME>20210607184019
ACCESSION NUMBER:		0001209191-21-038751
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210603
FILED AS OF DATE:		20210607
DATE AS OF CHANGE:		20210607

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Foley Todd
		CENTRAL INDEX KEY:			0001473930

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39335
		FILM NUMBER:		211000789

	MAIL ADDRESS:	
		STREET 1:		THE JOHN HANCOCK TOWER
		STREET 2:		200 CLARENDON STREET 54TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Repare Therapeutics Inc.
		CENTRAL INDEX KEY:			0001808158
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			Z4
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		7210 FREDERICK-BANTING, SUITE 100
		CITY:			ST-LAURENT
		STATE:			A8
		ZIP:			H4S 2A1
		BUSINESS PHONE:		(857) 412-7018

	MAIL ADDRESS:	
		STREET 1:		7210 FREDERICK-BANTING, SUITE 100
		CITY:			ST-LAURENT
		STATE:			A8
		ZIP:			H4S 2A1
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
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    <periodOfReport>2021-06-03</periodOfReport>

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        <issuerCik>0001808158</issuerCik>
        <issuerName>Repare Therapeutics Inc.</issuerName>
        <issuerTradingSymbol>RPTX</issuerTradingSymbol>
    </issuer>

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        <reportingOwnerId>
            <rptOwnerCik>0001473930</rptOwnerCik>
            <rptOwnerName>Foley Todd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MPM CAPITAL</rptOwnerStreet1>
            <rptOwnerStreet2>450 KENDALL STREET</rptOwnerStreet2>
            <rptOwnerCity>CAMBRIDGE</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02142</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
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                    <footnoteId id="F5"/>
                </transactionShares>
                <transactionPricePerShare>
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                    <footnoteId id="F6"/>
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                    <footnoteId id="F8"/>
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                    <footnoteId id="F9"/>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Shares</value>
            </securityTitle>
            <transactionDate>
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            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
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            <transactionTimeliness>
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            <transactionAmounts>
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                    <footnoteId id="F11"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>30.74</value>
                    <footnoteId id="F12"/>
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                <transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
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                <natureOfOwnership>
                    <value>See Footnote</value>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
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                    <footnoteId id="F14"/>
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                <transactionPricePerShare>
                    <value>32.25</value>
                    <footnoteId id="F15"/>
                </transactionPricePerShare>
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                </sharesOwnedFollowingTransaction>
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                    <value>I</value>
                </directOrIndirectOwnership>
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                    <value>See Footnote</value>
                    <footnoteId id="F16"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
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                <footnoteId id="F1"/>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>8379</value>
                    <footnoteId id="F17"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>32.96</value>
                    <footnoteId id="F18"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2358050</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
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                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F19"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 on 3/31/2021.</footnote>
        <footnote id="F2">The shares were sold as follows: 9,497 by MPM BioVentures 2014, L.P. (&quot;BV 2014&quot;) and 327 by MPM Asset Management Investors BV2014 LLC (&quot;AM BV2014&quot;).</footnote>
        <footnote id="F3">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.35 to $32.265 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and
Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in
this footnote.</footnote>
        <footnote id="F4">The shares are held as follows: 2,163,535 by BV 2014, 135,843 by MPM BioVentures 2014(B), L.P. (&quot;BV 2014(B)&quot;) and 74,470 by AM BV2014. MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (&quot;BV LLC&quot;) are the direct and indirect general partners of BV 2014 and BV 2014(B).  BV LLC is the manager of AM BV2014. Todd Foley is a managing director of BV LLC.  The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F5">The shares were sold as follows: 3,426 by BV 2014 and 118 by AM BV2014.</footnote>
        <footnote id="F6">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.10 to $31.09 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and
Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in
this footnote.</footnote>
        <footnote id="F7">The shares are held as follows: 2,160,109 by BV 2014, 135,843 by BV 2014(B) and 74,352 by AM BV2014. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F8">The shares were sold as follows: 1,999 by BV 2014 and 69 by AM BV2014.</footnote>
        <footnote id="F9">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.10 to $31.54 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and
Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in
this footnote.</footnote>
        <footnote id="F10">The shares are held as follows: 2,158,110 by BV 2014, 135,843 by BV 2014(B) and 74,283 by AM BV2014. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F11">The shares were sold as follows: 1,023 by BV 2014 and 35 by AM BV2014.</footnote>
        <footnote id="F12">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.41 to $31.25 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and
Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in
this footnote.</footnote>
        <footnote id="F13">The shares are held as follows: 2,157,087 by BV 2014, 135,843 by BV 2014(B) and 74,248 by AM BV2014. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F14">The shares were sold as follows: 724 by BV 2014 and 25 by AM BV2014.</footnote>
        <footnote id="F15">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.50 to $32.49 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and
Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in
this footnote.</footnote>
        <footnote id="F16">The shares are held as follows: 2,156,363 by BV 2014, 135,843 by BV 2014(B) and 74,223 by AM BV2014. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F17">The shares were sold as follows: 8,100 by BV 2014 and 279 by AM BV2014.</footnote>
        <footnote id="F18">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.50 to $33.15 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and
Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in
this footnote.</footnote>
        <footnote id="F19">The shares are held as follows: 2,148,263 by BV 2014, 135,843 by BV 2014(B) and 73,944 by AM BV2014. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Todd Foley</signatureName>
        <signatureDate>2021-06-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</DOCUMENT>
</SEC-DOCUMENT>
