<SEC-DOCUMENT>0000899243-22-017936.txt : 20220512
<SEC-HEADER>0000899243-22-017936.hdr.sgml : 20220512
<ACCEPTANCE-DATETIME>20220512214534
ACCESSION NUMBER:		0000899243-22-017936
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20220510
FILED AS OF DATE:		20220512
DATE AS OF CHANGE:		20220512

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Coppola Brian
		CENTRAL INDEX KEY:			0001906904

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39331
		FILM NUMBER:		22920002

	MAIL ADDRESS:	
		STREET 1:		C/O TREBIA ACQUISITION CORP.
		STREET 2:		41 MADISON AVENUE, SUITE 2020
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10010

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			System1, Inc.
		CENTRAL INDEX KEY:			0001805833
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROGRAMMING, DATA PROCESSING, ETC. [7370]
		IRS NUMBER:				981531250
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		4235 REDWOOD AVENUE
		CITY:			MARINA DEL REY
		STATE:			CA
		ZIP:			90066
		BUSINESS PHONE:		310-924-6037

	MAIL ADDRESS:	
		STREET 1:		4235 REDWOOD AVENUE
		CITY:			MARINA DEL RAY
		STATE:			CA
		ZIP:			90066

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Trebia Acquisition Corp.
		DATE OF NAME CHANGE:	20200306
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2022-05-10</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001805833</issuerCik>
        <issuerName>System1, Inc.</issuerName>
        <issuerTradingSymbol>SST</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001906904</rptOwnerCik>
            <rptOwnerName>Coppola Brian</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SYSTEM1, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>4235 REDWOOD AVENUE</rptOwnerStreet2>
            <rptOwnerCity>MARINA DEL REY</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90066</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Product Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2022-05-10</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>75000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>152086</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Mr. Coppola was granted 75,000 restricted stock units (&quot;RSUs&quot;) in connection with his continued employment with System1, Inc. (&quot;SST&quot;).  Each RSU represents the right to receive one share of SST Class A Common Stock upon vesting. Subject to the continued employment of Mr. Coppola through the applicable vesting dates, (i) 3,750 of the RSUs will vest on January 28, 2023, (ii) 11,250 of the RSUs will vest in quarterly installments of 2,813 each on January 28, April 28, July 28 and October 28, 2024 and (iii) the remaining 60,000 RSUs will vest in eight (8) quarterly installments of 7,500 each on the quarterly anniversary thereafter.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Daniel Weinrot, Attorney-in-Fact for Brian Coppola</signatureName>
        <signatureDate>2022-05-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
