<SEC-DOCUMENT>0001209191-19-005728.txt : 20190129
<SEC-HEADER>0001209191-19-005728.hdr.sgml : 20190129
<ACCEPTANCE-DATETIME>20190129144555
ACCESSION NUMBER:		0001209191-19-005728
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190125
FILED AS OF DATE:		20190129
DATE AS OF CHANGE:		20190129

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Varner John Rodney
		CENTRAL INDEX KEY:			0001735543

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38244
		FILM NUMBER:		19548393

	MAIL ADDRESS:	
		STREET 1:		P.O. BOX 162341
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78716

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Genprex, Inc.
		CENTRAL INDEX KEY:			0001595248
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				900772347
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1701 TRINITY STREET
		STREET 2:		SUITE 3.322
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78712
		BUSINESS PHONE:		512-708-0155

	MAIL ADDRESS:	
		STREET 1:		1701 TRINITY STREET
		STREET 2:		SUITE 3.322
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78712
</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>2019-01-25</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001595248</issuerCik>
        <issuerName>Genprex, Inc.</issuerName>
        <issuerTradingSymbol>GNPX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001735543</rptOwnerCik>
            <rptOwnerName>Varner John Rodney</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1601 TRINITY STREET</rptOwnerStreet1>
            <rptOwnerStreet2>BLDG B, STE 3.322</rptOwnerStreet2>
            <rptOwnerCity>AUSTIN</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>78712</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>1.62</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2019-01-25</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>615384</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2022-01-25</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2029-01-25</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>615384</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>615384</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">One thirty-sixth (1/36) of the Shares subject to the Option shall vest on each monthly anniversary of January 25, 2019 so that one hundred percent (100%) of the shares subject to the Option are vested on the third anniversary of January 25, 2019.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ J. Rodney Varner</signatureName>
        <signatureDate>2019-01-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
