<SEC-DOCUMENT>0000899243-20-017117.txt : 20200618
<SEC-HEADER>0000899243-20-017117.hdr.sgml : 20200618
<ACCEPTANCE-DATETIME>20200618180141
ACCESSION NUMBER:		0000899243-20-017117
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200616
FILED AS OF DATE:		20200618
DATE AS OF CHANGE:		20200618

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Invus Public Equities, L.P.
		CENTRAL INDEX KEY:			0001340097

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39319
		FILM NUMBER:		20973699

	BUSINESS ADDRESS:	
		STREET 1:		C/O THE INVUS GROUP, LLC
		STREET 2:		750 LEXINGTON AVENUE, 30TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		212-317-7520

	MAIL ADDRESS:	
		STREET 1:		C/O THE INVUS GROUP, LLC
		STREET 2:		750 LEXINGTON AVENUE, 30TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

	FORMER NAME:	
		FORMER CONFORMED NAME:	Invus Public Equities, LP
		DATE OF NAME CHANGE:	20050928

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Minne Pascal
		CENTRAL INDEX KEY:			0001460839

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39319
		FILM NUMBER:		20973700

	MAIL ADDRESS:	
		STREET 1:		PLACE STE. GUDULE, 19
		CITY:			BRUXELLES
		STATE:			C9
		ZIP:			B-1000

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Artal International S.C.A.
		CENTRAL INDEX KEY:			0001218180

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39319
		FILM NUMBER:		20973701

	BUSINESS ADDRESS:	
		STREET 1:		VALLEY PARK
		STREET 2:		44, RUE DE LA VALLEE
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L-2661
		BUSINESS PHONE:		352224259-1

	MAIL ADDRESS:	
		STREET 1:		VALLEY PARK
		STREET 2:		44, RUE DE LA VALLEE
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L-2661

	FORMER NAME:	
		FORMER CONFORMED NAME:	ARTAL INTERNATIONAL SCA
		DATE OF NAME CHANGE:	20110531

	FORMER NAME:	
		FORMER CONFORMED NAME:	ARTAL INTERNATIONAL SA
		DATE OF NAME CHANGE:	20030210

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Artal International Management S.A.
		CENTRAL INDEX KEY:			0001522131
		STATE OF INCORPORATION:			N4
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39319
		FILM NUMBER:		20973702

	BUSINESS ADDRESS:	
		STREET 1:		VALLEY PARK
		STREET 2:		44, RUE DE LA VALLEE
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L-2661
		BUSINESS PHONE:		352224259-1

	MAIL ADDRESS:	
		STREET 1:		VALLEY PARK
		STREET 2:		44, RUE DE LA VALLEE
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L-2661

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Artal Group S.A.
		CENTRAL INDEX KEY:			0001053906
		STATE OF INCORPORATION:			N4

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39319
		FILM NUMBER:		20973703

	BUSINESS ADDRESS:	
		STREET 1:		VALLEY PARK
		STREET 2:		44, RUE DE LA VALLEE
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L-2661
		BUSINESS PHONE:		(352) 22.42.59-1

	MAIL ADDRESS:	
		STREET 1:		VALLEY PARK
		STREET 2:		44, RUE DE LA VALLEE
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L-2661

	FORMER NAME:	
		FORMER CONFORMED NAME:	ARTAL GROUP S A
		DATE OF NAME CHANGE:	19980128

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Westend S.A.
		CENTRAL INDEX KEY:			0001283968
		STATE OF INCORPORATION:			N4
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39319
		FILM NUMBER:		20973704

	BUSINESS ADDRESS:	
		STREET 1:		VALLEY PARK
		STREET 2:		44, RUE DE LA VALLEE
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L-2661
		BUSINESS PHONE:		3522242591

	MAIL ADDRESS:	
		STREET 1:		VALLEY PARK
		STREET 2:		44, RUE DE LA VALLEE
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L-2661

	FORMER NAME:	
		FORMER CONFORMED NAME:	WESTEND S.A.
		DATE OF NAME CHANGE:	20120816

	FORMER NAME:	
		FORMER CONFORMED NAME:	WESTEND SA
		DATE OF NAME CHANGE:	20040317

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Stichting Administratiekantoor Westend
		CENTRAL INDEX KEY:			0001460840
		STATE OF INCORPORATION:			XX

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39319
		FILM NUMBER:		20973705

	BUSINESS ADDRESS:	
		STREET 1:		CLAUDE DEBUSSYLAAN, 46
		CITY:			AMSTERDAM
		STATE:			P7
		ZIP:			1082 MD
		BUSINESS PHONE:		352-224-2591

	MAIL ADDRESS:	
		STREET 1:		CLAUDE DEBUSSYLAAN, 46
		CITY:			AMSTERDAM
		STATE:			P7
		ZIP:			1082 MD

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Artal Treasury Ltd
		CENTRAL INDEX KEY:			0001766952
		STATE OF INCORPORATION:			Y7
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39319
		FILM NUMBER:		20973706

	BUSINESS ADDRESS:	
		STREET 1:		PO BOX 165, SUITE 4, BOROUGH HOUSE
		STREET 2:		RUE DU PRE
		CITY:			ST. PETER PORT
		STATE:			Y7
		ZIP:			GY1 3JJ
		BUSINESS PHONE:		44(0)1481 740718

	MAIL ADDRESS:	
		STREET 1:		PO BOX 165, SUITE 4, BOROUGH HOUSE
		STREET 2:		RUE DU PRE
		CITY:			ST. PETER PORT
		STATE:			Y7
		ZIP:			GY1 3JJ

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Invus Public Equities Advisors, LLC
		CENTRAL INDEX KEY:			0001340096

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39319
		FILM NUMBER:		20973707

	BUSINESS ADDRESS:	
		STREET 1:		C/O THE INVUS GROUP, LLC
		STREET 2:		750 LEXINGTON AVENUE, 30TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		(212) 371-1717

	MAIL ADDRESS:	
		STREET 1:		C/O THE INVUS GROUP, LLC
		STREET 2:		750 LEXINGTON AVENUE, 30TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Generation Bio Co.
		CENTRAL INDEX KEY:			0001733294
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				814301281
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		301 BINNEY STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142
		BUSINESS PHONE:		857-529-5908

	MAIL ADDRESS:	
		STREET 1:		301 BINNEY STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
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<ownershipDocument>

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    <periodOfReport>2020-06-16</periodOfReport>

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        <issuerCik>0001733294</issuerCik>
        <issuerName>Generation Bio Co.</issuerName>
        <issuerTradingSymbol>GBIO</issuerTradingSymbol>
    </issuer>

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            <rptOwnerCik>0001340097</rptOwnerCik>
            <rptOwnerName>Invus Public Equities, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>750 LEXINGTON AVENUE 30TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001460839</rptOwnerCik>
            <rptOwnerName>Minne Pascal</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>8 CLOS DU BOCAGE, B-1332 GENVAL, BELGIUM</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CITIZENSHIP: BELGIUM</rptOwnerCity>
            <rptOwnerState>C9</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>BELGIUM</rptOwnerStateDescription>
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    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001218180</rptOwnerCik>
            <rptOwnerName>Artal International S.C.A.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>VALLEY PARK, 44, RUE DE LA VALLEE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LUXEMBOURG</rptOwnerCity>
            <rptOwnerState>N4</rptOwnerState>
            <rptOwnerZipCode>L-2661</rptOwnerZipCode>
            <rptOwnerStateDescription>LUXEMBOURG</rptOwnerStateDescription>
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    <reportingOwner>
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            <rptOwnerCik>0001522131</rptOwnerCik>
            <rptOwnerName>Artal International Management S.A.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>VALLEY PARK, 44, RUE DE LA VALLEE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LUXEMBOURG</rptOwnerCity>
            <rptOwnerState>N4</rptOwnerState>
            <rptOwnerZipCode>L-2661</rptOwnerZipCode>
            <rptOwnerStateDescription>LUXEMBOURG</rptOwnerStateDescription>
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    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001053906</rptOwnerCik>
            <rptOwnerName>Artal Group S.A.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>VALLEY PARK, 44, RUE DE LA VALLEE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LUXEMBOURG</rptOwnerCity>
            <rptOwnerState>N4</rptOwnerState>
            <rptOwnerZipCode>L-2661</rptOwnerZipCode>
            <rptOwnerStateDescription>LUXEMBOURG</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
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            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
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    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001283968</rptOwnerCik>
            <rptOwnerName>Westend S.A.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>VALLEY PARK, 44, RUE DE LA VALLEE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LUXEMBOURG</rptOwnerCity>
            <rptOwnerState>N4</rptOwnerState>
            <rptOwnerZipCode>L-2661</rptOwnerZipCode>
            <rptOwnerStateDescription>LUXEMBOURG</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
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    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001460840</rptOwnerCik>
            <rptOwnerName>Stichting Administratiekantoor Westend</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>CLAUDE DEBUSSYLAAN, 46</rptOwnerStreet1>
            <rptOwnerStreet2>1082 MD AMSTERDAM</rptOwnerStreet2>
            <rptOwnerCity>THE NETHERLANDS</rptOwnerCity>
            <rptOwnerState>P7</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>NETHERLANDS</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
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    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001766952</rptOwnerCik>
            <rptOwnerName>Artal Treasury Ltd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>P.O. BOX 165</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 4, BOROUGH HOUSE, RUE DU PRE</rptOwnerStreet2>
            <rptOwnerCity>ST. PETER PORT</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode>GY1 3JJ</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
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    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001340096</rptOwnerCik>
            <rptOwnerName>Invus Public Equities Advisors, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>750 LEXINGTON AVENUE, 30TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-06-16</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2014191</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2014191</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-06-16</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>800000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>19.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2814191</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Series B Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2020-06-16</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2186820</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1406664</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Series C Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2020-06-16</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1073076</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>607527</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On June 16, 2020, the Series B Preferred Stock automatically converted into Common Stock on approximately a 1.5546-for-one basis (when rounded to the nearest ten-thousandth) without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.</footnote>
        <footnote id="F2">On June 16, 2020, the Series C Preferred Stock automatically converted into Common Stock on a 1.7663-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.</footnote>
        <footnote id="F3">The shares are held directly by Invus Public Equities, L.P. The general partner of Invus Public Equities, L.P. is Invus Public Equities Advisors, LLC. Artal Treasury Ltd  is the managing member of Invus Public Equities Advisors, LLC. Artal Treasury Ltd is a wholly owned subsidiary of the Geneva branch of Artal International S.C.A. The managing partner of Artal International S.C.A. is Artal International Management S.A., both of which are wholly owned subsidiaries of Artal Group S.A., which is a wholly owned subsidiary of Westend S.A., which is a wholly owned subsidiary of Stichting Administratiekantoor Westend (the &quot;Stichting&quot;). Mr. Pascal Minne is the sole member of the board of the Stichting.</footnote>
        <footnote id="F4">(Continued from footnote 3) Each of the Reporting Persons, other than Invus Public Equities L.P., disclaims beneficial ownership of the securities held by the other Reporting Persons, except to the extent of such reporting person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Exchange Act, each of the reporting persons (other than to the extent it directly holds securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 of the Exchange Act or for any other purpose.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Invus Public Equities, L.P., By: Invus Public Equities Advisors, LLC, its General Partner, By: Raymond Debbane, President, /s/ Raymond Debbane</signatureName>
        <signatureDate>2020-06-18</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Invus Public Equities Advisors, LLC, By: Raymond Debbane, President, /s/ Raymond Debbane</signatureName>
        <signatureDate>2020-06-18</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Artal Treasury Ltd, By: Keith Le Poidevin, Director, /s/ Keith Le Poidevin</signatureName>
        <signatureDate>2020-06-18</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Artal International S.C.A., By: Artal International Management S.A., its Managing Partner, By: Anne Goffard, Managing Director, /s/ Anne Goffard</signatureName>
        <signatureDate>2020-06-18</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Artal International Management S.A., By: Anne Goffard, Managing Director, /s/ Anne Goffard</signatureName>
        <signatureDate>2020-06-18</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Artal Group S.A., By: Anne Goffard, Authorized Person, /s/ Anne Goffard</signatureName>
        <signatureDate>2020-06-18</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Westend S.A., By: Pascal Minne, Director, /s/ Pascal Minne</signatureName>
        <signatureDate>2020-06-18</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Stichting Administratiekantoor Westend, By: Pascal Minne, Sole Member of the Board, /s/ Pascal Minne</signatureName>
        <signatureDate>2020-06-18</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Pascal Minne</signatureName>
        <signatureDate>2020-06-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
