<SEC-DOCUMENT>0000899243-21-011829.txt : 20210315
<SEC-HEADER>0000899243-21-011829.hdr.sgml : 20210315
<ACCEPTANCE-DATETIME>20210315215025
ACCESSION NUMBER:		0000899243-21-011829
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210311
FILED AS OF DATE:		20210315
DATE AS OF CHANGE:		20210315

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Pacala Charles Angus
		CENTRAL INDEX KEY:			0001848817

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39463
		FILM NUMBER:		21743452

	MAIL ADDRESS:	
		STREET 1:		C/O OUSTER, INC.
		STREET 2:		350 TREAT AVENUE
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94110

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Ouster, Inc.
		CENTRAL INDEX KEY:			0001816581
		STANDARD INDUSTRIAL CLASSIFICATION:	GENERAL INDUSTRIAL MACHINERY & EQUIPMENT, NEC [3569]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1400 CENTREPARK BLVD.
		STREET 2:		STE. 810
		CITY:			WEST PALM BEACH
		STATE:			FL
		ZIP:			33401
		BUSINESS PHONE:		(561) 712-7860

	MAIL ADDRESS:	
		STREET 1:		1400 CENTREPARK BLVD.
		STREET 2:		STE. 810
		CITY:			WEST PALM BEACH
		STATE:			FL
		ZIP:			33401

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Colonnade Acquisition Corp.
		DATE OF NAME CHANGE:	20200701
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
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    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-03-11</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001816581</issuerCik>
        <issuerName>Ouster, Inc.</issuerName>
        <issuerTradingSymbol>OUST</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001848817</rptOwnerCik>
            <rptOwnerName>Pacala Charles Angus</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>350 TREAT AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94110</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-03-11</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4385807</value>
                </transactionShares>
                <transactionPricePerShare>
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                <directOrIndirectOwnership>
                    <value>D</value>
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    <derivativeTable>
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                <value>Stock Option</value>
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                    <footnoteId id="F1"/>
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                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <footnoteId id="F3"/>
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            <expirationDate>
                <value>2030-10-01</value>
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        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option</value>
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                <value>1.43</value>
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                <value>2021-03-11</value>
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            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
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                <equitySwapInvolved>0</equitySwapInvolved>
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                <value></value>
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                    <footnoteId id="F2"/>
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                <value>2030-10-01</value>
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                    <value>Common Stock</value>
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                <sharesOwnedFollowingTransaction>
                    <value>4359771</value>
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            <ownershipNature>
                <directOrIndirectOwnership>
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    <footnotes>
        <footnote id="F1">On March 11, 2021, pursuant to that certain Agreement and Plan of Merger, dated as of December 21, 2020, by and among the Issuer, Beam Merger Sub, Inc. (&quot;Merger Sub&quot;) and Ouster Technologies, Inc. (&quot;Ouster Technologies&quot;), Merger Sub merged with and into Ouster Technologies with Ouster Technologies surviving as a wholly owned subsidiary of the Issuer (the &quot;Merger&quot;). Upon consummation of the Merger (the &quot;Effective Time&quot;), each issued and outstanding share of common stock of Ouster Technologies was automatically cancelled and converted into approximately 0.703 (the &quot;Exchange Ratio&quot;) shares of common stock of the Issuer.</footnote>
        <footnote id="F2">At the Effective Time, each outstanding option to purchase shares of Ouster Technologies common stock (each an &quot;Ouster Technologies Option&quot;) was automatically cancelled and converted into an option to purchase a number of shares of common stock of the Issuer equal to (i) the number of shares of Ouster Technologies common stock subject to the applicable Ouster Technologies Option multiplied by (ii) the Exchange Ratio, rounded down to the nearest whole share.</footnote>
        <footnote id="F3">Represents an award of stock options on October 2, 2020, which vests in 48 monthly installments thereafter, subject to the reporting person's continued service through the applicable vesting date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Myra Pasek, Attorney-in-Fact</signatureName>
        <signatureDate>2021-03-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
