<SEC-DOCUMENT>0001209191-14-013288.txt : 20140221
<SEC-HEADER>0001209191-14-013288.hdr.sgml : 20140221
<ACCEPTANCE-DATETIME>20140221193056
ACCESSION NUMBER:		0001209191-14-013288
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20140220
FILED AS OF DATE:		20140221
DATE AS OF CHANGE:		20140221

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Inogen Inc
		CENTRAL INDEX KEY:			0001294133
		STANDARD INDUSTRIAL CLASSIFICATION:	ORTHOPEDIC, PROSTHETIC & SURGICAL APPLIANCES & SUPPLIES [3842]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE

	BUSINESS ADDRESS:	
		STREET 1:		326 BOLLAY DRIVE
		CITY:			GOLETA
		STATE:			CA
		ZIP:			93117
		BUSINESS PHONE:		805-562-0500

	MAIL ADDRESS:	
		STREET 1:		326 BOLLAY DRIVE
		CITY:			GOLETA
		STATE:			CA
		ZIP:			93117

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LINK WILLIAM J PHD
		CENTRAL INDEX KEY:			0001228684

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36309
		FILM NUMBER:		14635271

	MAIL ADDRESS:	
		STREET 1:		3000 SAND HILL ROAD, #4-210
		CITY:			MENLO PARK
		STATE:			CA
		ZIP:			94025
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
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        <issuerName>Inogen Inc</issuerName>
        <issuerTradingSymbol>INGN</issuerTradingSymbol>
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            <rptOwnerName>LINK WILLIAM J PHD</rptOwnerName>
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            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>GOLETA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>93117</rptOwnerZipCode>
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            <isOfficer>0</isOfficer>
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                    <footnoteId id="F2"/>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
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                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
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        </derivativeTransaction>
        <derivativeTransaction>
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                <footnoteId id="F1"/>
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            <transactionDate>
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            <transactionAmounts>
                <transactionShares>
                    <value>172421</value>
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                <transactionPricePerShare>
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            <expirationDate>
                <footnoteId id="F1"/>
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            <underlyingSecurity>
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            <ownershipNature>
                <directOrIndirectOwnership>
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                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F4"/>
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        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Series D Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2014-02-20</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>547941</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>1029858</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Series E Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2014-02-20</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>684970</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>1844238</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each share of (i) Series B Preferred Stock will automatically convert into 1.451080982  shares of the Issuer's Common Stock, (ii) Series C Preferred Stock will automatically convert into 1.730144671 shares of the Issuer's Common Stock, (iii) Series D Preferred Stock will automatically convert into 1.879505664 shares of the Issuer's Common Stock, and (iv) Series E Preferred Stock will automatically convert into 2.692436975 shares of the Issuer's Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.</footnote>
        <footnote id="F2">Shares held by Versant Affiliates Fund II-A, L.P. (&quot;VAF II-A&quot;). Versant Ventures II, LLC (&quot;VVC II&quot;) serves as the sole general partner of VAF II-A. The reporting person is a director and/or member of VVC II and shares voting and dispositive power over the shares held by VAF II-A. The reporting person disclaims beneficial ownership of these shares, except to the extent of his pecuniary interest in such shares.</footnote>
        <footnote id="F3">Shares held by Versant Side Fund II, L.P. (&quot;VSF II&quot;).  VVC II serves as the sole general partner of VSF II. The reporting person is a director and/or member of VVC II and shares voting and dispositive power over the shares held by VSF II. The reporting person disclaims beneficial ownership of these shares, except to the extent of his pecuniary interest in such shares.</footnote>
        <footnote id="F4">Shares held by Versant Venture Capital II, L.P. (&quot;VV II&quot;).  VVC II serves as the sole general partner of VV II. The reporting person is a director and/or member of VVC II and shares voting and dispositive power over the shares held by VV II. The reporting person disclaims beneficial ownership of these shares, except to the extent of his pecuniary interest in such shares.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Alison Bauerlein, as Attorney-in-Fact</signatureName>
        <signatureDate>2014-02-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
