<SEC-DOCUMENT>0000899243-21-009419.txt : 20210303
<SEC-HEADER>0000899243-21-009419.hdr.sgml : 20210303
<ACCEPTANCE-DATETIME>20210303170041
ACCESSION NUMBER:		0000899243-21-009419
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200728
FILED AS OF DATE:		20210303
DATE AS OF CHANGE:		20210303

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Chin Mark
		CENTRAL INDEX KEY:			0001734389

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38503
		FILM NUMBER:		21710099

	MAIL ADDRESS:	
		STREET 1:		20 BERKELEY SQUARE, MAYFAIR
		CITY:			LONDON
		STATE:			X0
		ZIP:			W1J 6EQ

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Iterum Therapeutics plc
		CENTRAL INDEX KEY:			0001659323
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			L2
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		BLOCK 2 FLOOR 3, HARCOURT CENTRE
		STREET 2:		HARCOURT STREET
		CITY:			DUBLIN
		STATE:			L2
		ZIP:			2
		BUSINESS PHONE:		(872) 225-6077

	MAIL ADDRESS:	
		STREET 1:		BLOCK 2 FLOOR 3, HARCOURT CENTRE
		STREET 2:		HARCOURT STREET
		CITY:			DUBLIN
		STATE:			L2
		ZIP:			2

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Iterum Therapeutics Ltd
		DATE OF NAME CHANGE:	20151124
</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>2020-07-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001659323</issuerCik>
        <issuerName>Iterum Therapeutics plc</issuerName>
        <issuerTradingSymbol>ITRM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001734389</rptOwnerCik>
            <rptOwnerName>Chin Mark</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ITERUM THERAPEUTICS PLC, BLK 2</rptOwnerStreet1>
            <rptOwnerStreet2>FL. 3, HARCOURT CENTRE, HARCOURT ST.</rptOwnerStreet2>
            <rptOwnerCity>DUBLIN</rptOwnerCity>
            <rptOwnerState>L2</rptOwnerState>
            <rptOwnerZipCode>2</rptOwnerZipCode>
            <rptOwnerStateDescription>IRELAND</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Ordinary Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2020-07-28</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>11857</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Shares were transferred to Arix Bioscience Holdings Limited for no consideration. The reporting person had previously held the position of investment director for Arix Bioscience plc (&quot;Arix&quot;), the sole owner and parent of Arix Bioscience Holdings Limited, and had been appointed to the board of the issuer by Arix Bioscience Holdings Limited pursuant to a contractual right it held at that time. Pursuant to an agreement between the reporting person and Arix, following his resignation from Arix, any shares held by the reporting person or received by him from the issuer from the vesting and/or exercise of equity compensation were required to be transferred to Arix Bioscience Holdings Limited.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Mark Chin</signatureName>
        <signatureDate>2021-03-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
