<SEC-DOCUMENT>0001209191-21-054329.txt : 20210901
<SEC-HEADER>0001209191-21-054329.hdr.sgml : 20210901
<ACCEPTANCE-DATETIME>20210901200053
ACCESSION NUMBER:		0001209191-21-054329
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210830
FILED AS OF DATE:		20210901
DATE AS OF CHANGE:		20210901

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Baszucki David
		CENTRAL INDEX KEY:			0001834991

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39763
		FILM NUMBER:		211231448

	MAIL ADDRESS:	
		STREET 1:		970 PARK PLACE
		CITY:			SAN MATEO
		STATE:			CA
		ZIP:			94403

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Roblox Corp
		CENTRAL INDEX KEY:			0001315098
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				200991664
		STATE OF INCORPORATION:			DE

	BUSINESS ADDRESS:	
		STREET 1:		970 PARK PLACE
		CITY:			SAN MATEO
		STATE:			CA
		ZIP:			94403
		BUSINESS PHONE:		(888) 858-2569

	MAIL ADDRESS:	
		STREET 1:		970 PARK PLACE
		CITY:			SAN MATEO
		STATE:			CA
		ZIP:			94403
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
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        <issuerName>Roblox Corp</issuerName>
        <issuerTradingSymbol>RBLX</issuerTradingSymbol>
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            <rptOwnerName>Baszucki David</rptOwnerName>
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            <rptOwnerStreet1>C/O ROBLOX CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>970 PARK PLACE</rptOwnerStreet2>
            <rptOwnerCity>SAN MATEO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94403</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
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            <officerTitle>President &amp; CEO</officerTitle>
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        <nonDerivativeTransaction>
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                <sharesOwnedFollowingTransaction>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
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            <deemedExecutionDate></deemedExecutionDate>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
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                <transactionPricePerShare>
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            <transactionTimeliness>
                <value></value>
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                <transactionPricePerShare>
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                </transactionPricePerShare>
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                </transactionAcquiredDisposedCode>
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            <expirationDate>
                <footnoteId id="F11"/>
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            <underlyingSecurity>
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                    <value>750000</value>
                </underlyingSecurityShares>
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                    <value>I</value>
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                    <footnoteId id="F9"/>
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        <derivativeTransaction>
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                <footnoteId id="F11"/>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
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                    <value>750000</value>
                </transactionShares>
                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            <exerciseDate>
                <footnoteId id="F11"/>
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            <expirationDate>
                <footnoteId id="F11"/>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
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                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
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                    <footnoteId id="F10"/>
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        <derivativeTransaction>
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                <footnoteId id="F11"/>
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            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F11"/>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>750000</value>
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                <transactionPricePerShare>
                    <value>0.00</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            <exerciseDate>
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            <expirationDate>
                <footnoteId id="F11"/>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
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                <underlyingSecurityShares>
                    <value>750000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>25790534</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
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    <footnotes>
        <footnote id="F1">These shares are held directly by The Freedom Revocable Trust dated February 28, 2017 as amended, and for which the Reporting Person serves as trustee.</footnote>
        <footnote id="F2">The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on March 22, 2021.</footnote>
        <footnote id="F3">The price reported in column 4 is an average price.  These shares were sold in multiple transactions at prices ranging from $80.06 to $81.05, inclusive.  The Reporting Person undertakes to provide 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 price reported in column 4 is an average price.  These shares were sold in multiple transactions at prices ranging from $81.06 to $82.05, inclusive.  The Reporting Person undertakes to provide 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="F5">The price reported in column 4 is an average price.  These shares were sold in multiple transactions at prices ranging from $82.06 to $83.00, inclusive.  The Reporting Person undertakes to provide 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="F6">The price reported in column 4 is an average price.  These shares were sold in multiple transactions at prices ranging from $83.06 to $83.95, inclusive.  The Reporting Person undertakes to provide 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 price reported in column 4 is an average price.  These shares were sold in multiple transactions at prices ranging from $84.34 to $84.76, inclusive.  The Reporting Person undertakes to provide 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="F8">Each share of the Class A Common Stock was issued upon conversion of one share of Class B Common Stock at the election of the Reporting Person.</footnote>
        <footnote id="F9">These shares are held by the 2020 David Baszucki Gift Trust dtd 12/31/2018 for which the Bessemer Trust of Delaware, N.A. serves as trustee.  The Reporting Person may be deemed to have beneficial ownership of the securities held by the Gift Trust.</footnote>
        <footnote id="F10">These shares are held by the 2020 Jan Baszucki Gift Trust dtd 12/31/2018 of which the Bessemer Trust Company of Delaware, N.A. serves as trustee.   The spouse of the Reporting Person may be deemed to have beneficial ownership of the securities held by the Gift Trust.</footnote>
        <footnote id="F11">Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the election of the Reporting Person and has no expiration date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Mark Reinstra Attorney-in-Fact for David Baszucki</signatureName>
        <signatureDate>2021-09-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
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