<SEC-DOCUMENT>0001127430-15-000033.txt : 20150227
<SEC-HEADER>0001127430-15-000033.hdr.sgml : 20150227
<ACCEPTANCE-DATETIME>20150227161156
ACCESSION NUMBER:		0001127430-15-000033
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20150226
FILED AS OF DATE:		20150227
DATE AS OF CHANGE:		20150227

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INSMED Inc
		CENTRAL INDEX KEY:			0001104506
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				541972729
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		10 FINDERNE AVENUE
		STREET 2:		BUILDING 10
		CITY:			BRIDGEWATER
		STATE:			NJ
		ZIP:			08807
		BUSINESS PHONE:		908-977-9900

	MAIL ADDRESS:	
		STREET 1:		10 FINDERNE AVENUE
		STREET 2:		BUILDING 10
		CITY:			BRIDGEWATER
		STATE:			NJ
		ZIP:			08807

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INSMED INC
		DATE OF NAME CHANGE:	20000128

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Schaeffer Orlov S Nicole
		CENTRAL INDEX KEY:			0001401017

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-30739
		FILM NUMBER:		15658796

	MAIL ADDRESS:	
		STREET 1:		C/O AMICUS THERAPEUTICS, INC.
		STREET 2:		6 CEDAR BROOK DRIVE
		CITY:			CRANBURY
		STATE:			NJ
		ZIP:			08512
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2015-02-26</periodOfReport>

    <issuer>
        <issuerCik>0001104506</issuerCik>
        <issuerName>INSMED Inc</issuerName>
        <issuerTradingSymbol>INSM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001401017</rptOwnerCik>
            <rptOwnerName>Schaeffer Orlov S Nicole</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>10 FINDERNE AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BRIDGEWATER</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>08807</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP, HR &amp; Corp. Svcs.</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>12.44</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2015-02-26</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>12500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2015-02-26</value>
            </exerciseDate>
            <expirationDate>
                <value>2023-05-23</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>12500</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>12500</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On May 23, 2013, the reporting person was granted an option to purchase 25,000 shares of common stock.  The option vests in two equal installments based upon the Issuer's satisfaction of two separate performance metrics.  One such performance metric was met by the Issuer on February 26, 2015, resulting in vesting of the option as to 12,500 shares.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ S. Nicole Schaeffer, by Christine Pellizzari as Attorney-in-fact</signatureName>
        <signatureDate>2015-02-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
