<SEC-DOCUMENT>0001209191-21-068135.txt : 20211206
<SEC-HEADER>0001209191-21-068135.hdr.sgml : 20211206
<ACCEPTANCE-DATETIME>20211206172641
ACCESSION NUMBER:		0001209191-21-068135
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20211206
FILED AS OF DATE:		20211206
DATE AS OF CHANGE:		20211206

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Dagnon Terry
		CENTRAL INDEX KEY:			0001760510

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37759
		FILM NUMBER:		211473985

	MAIL ADDRESS:	
		STREET 1:		C/O ONCOBIOLOGICS, INC.
		STREET 2:		7 CLARKE DRIVE
		CITY:			CRANBURY
		STATE:			NJ
		ZIP:			08512

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Outlook Therapeutics, Inc.
		CENTRAL INDEX KEY:			0001649989
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				383982704
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		485 ROUTE 1 SOUTH
		STREET 2:		BUILDING F, SUITE 320
		CITY:			ISELIN
		STATE:			NJ
		ZIP:			08830
		BUSINESS PHONE:		6096193990

	MAIL ADDRESS:	
		STREET 1:		485 ROUTE 1 SOUTH
		STREET 2:		BUILDING F, SUITE 320
		CITY:			ISELIN
		STATE:			NJ
		ZIP:			08830

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Oncobiologics, Inc.
		DATE OF NAME CHANGE:	20150804
</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>2021-12-06</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001649989</issuerCik>
        <issuerName>Outlook Therapeutics, Inc.</issuerName>
        <issuerTradingSymbol>OTLK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001760510</rptOwnerCik>
            <rptOwnerName>Dagnon Terry</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O OUTLOOK THERAPEUTICS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>485 ROUTE 1 SOUTH, BUILDING F, SUITE 320</rptOwnerStreet2>
            <rptOwnerCity>ISELIN</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>08830</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Operating Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-12-06</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>25201</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.38</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1163058</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Lawrence Kenyon, Attorney-in-Fact</signatureName>
        <signatureDate>2021-12-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
