<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:ns2="http://www.sec.gov/edgar/common">
    <headerData>
        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001285644</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001104506</issuerCik>
            <issuerName>INSMED INCORPORATED</issuerName>
            <secFileNumber>000-30739</secFileNumber>
            <issuerAddress>
                <ns2:street1>700 US Highway 202/206,</ns2:street1>
                <ns2:city>Bridgewater</ns2:city>
                <ns2:stateOrCountry>NJ</ns2:stateOrCountry>
                <ns2:zipCode>08807</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>9089779900</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>ALFRED ALTOMARI </nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>25000</noOfUnitsSold>
            <aggregateMarketValue>1767000.00</aggregateMarketValue>
            <noOfUnitsOutstanding>182138923</noOfUnitsOutstanding>
            <approxSaleDate>06/10/2025</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>05/12/2022</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>25000</amountOfSecuritiesAcquired>
            <paymentDate>05/12/2022</paymentDate>
            <natureOfPayment>N/A</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <remarks>The securities to be sold were acquired upon the vesting of restricted stock units during the period of 05/12/2022 through 05/11/2024.
</remarks>
        <noticeSignature>
            <noticeDate>06/10/2025</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>02/24/2025</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Alfred Altomari</signature>
        </noticeSignature>
    </formData>
</edgarSubmission>
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144
0001285644
XXXXXXXX
LIVE
0001104506
INSMED INCORPORATED
000-30739
700 US Highway 202/206,
Bridgewater
NJ
08807
9089779900
ALFRED ALTOMARI
Director
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
25000
1767000.00
182138923
06/10/2025
NASDAQ
Common
05/12/2022
Restricted Stock Units
Issuer
N
25000
05/12/2022
N/A
Y
The securities to be sold were acquired upon the vesting of restricted stock units during the period of 05/12/2022 through 05/11/2024.
06/10/2025
02/24/2025
/s/ Alfred Altomari