<SEC-DOCUMENT>0001685904-25-000004.txt : 20250821
<SEC-HEADER>0001685904-25-000004.hdr.sgml : 20250821
<ACCEPTANCE-DATETIME>20250821170556
ACCESSION NUMBER:		0001685904-25-000004
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20250819
FILED AS OF DATE:		20250821
DATE AS OF CHANGE:		20250821

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Adsett Roger
		CENTRAL INDEX KEY:			0001685904
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-30739
		FILM NUMBER:		251241548

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

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INSMED Inc
		CENTRAL INDEX KEY:			0001104506
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				541972729
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		700 US HIGHWAY 202/206
		CITY:			BRIDGEWATER
		STATE:			NJ
		ZIP:			08807
		BUSINESS PHONE:		908-977-9900

	MAIL ADDRESS:	
		STREET 1:		700 US HIGHWAY 202/206
		CITY:			BRIDGEWATER
		STATE:			NJ
		ZIP:			08807

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INSMED INC
		DATE OF NAME CHANGE:	20000128
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wk-form4_1755810352.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-08-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001685904</rptOwnerCik>
            <rptOwnerName>Adsett Roger</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>700 US HIGHWAY 202/206</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>Chief Operating Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-08-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>20193</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>127.42</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>110444</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-08-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>4807</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>128.27</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>105637</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">This is the weighted average sales price representing 20,193 shares sold at prices ranging from $127.00 to $127.99 per share. The Reporting Person undertakes to provide to the SEC staff, the issuer, or a security holder of the issuer the number of shares sold at each price within the price range upon request.</footnote>
        <footnote id="F2">This is the weighted average sales price representing 4,807 shares sold at prices ranging from $128.00 to $128.72 per share. The Reporting Person undertakes to provide to the SEC staff, the issuer, or a security holder of the issuer the number of shares sold at each price within the price range upon request.</footnote>
    </footnotes>

    <remarks>Exhibit List - Exhibit 24 - Power of Attorney</remarks>

    <ownerSignature>
        <signatureName>/s/ Roger Adsett, by Michael A. Smith as Attorney-in-fact</signatureName>
        <signatureDate>2025-08-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>powerofattorneyadsett.htm
<DESCRIPTION>EX-24
<TEXT>
<html><head>
<!-- Document created using Wdesk -->
<!-- Copyright 2025 Workiva -->
<title>Document</title></head><body><div id="ic39b5ce6aa4d41e394ae5b3223d141c9_1"></div><div style="min-height:72pt;width:100%"><div><font><br></font></div></div><div style="text-align:center"><font><br></font></div><div style="text-align:center"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:700;line-height:120%">LIMITED POWER OF ATTORNEY FOR</font></div><div style="text-align:center"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:700;line-height:120%">SEC REPORTING PURPOSES<br></font></div><div style="text-align:center"><font><br></font></div><div style="margin-bottom:12pt;text-align:justify;text-indent:36pt"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">Know all by these presents, that the undersigned hereby makes, constitutes and appoints each of Michael A. Smith, Katrina S. Atieh and Ian S. Macdonald, with full power of substitution and re-substitution, acting individually, as the undersigned&#8217;s true and lawful attorney-in-fact, with full power and authority as hereinafter described on behalf of and in the name, place and stead of the undersigned to&#58;</font></div><div style="margin-bottom:12pt;padding-left:72pt;text-align:justify;text-indent:-36pt"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">(1)</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%;padding-left:22.02pt">obtain credentials (including codes or passwords) to enable the undersigned to submit and file documents, forms and information required by Section 16(a) of the Securities Exchange Act of 1934, as amended (the &#8220;</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%;text-decoration:underline">Exchange Act</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">&#8221;) or any rule or regulation of the U.S. Securities and Exchange Commission (&#8220;SEC&#8221;) via the Electronic Data Gathering and Retrieval (&#8220;EDGAR&#8221;) system, including (i)&#160;preparing, executing in the undersigned&#8217;s name and on the undersigned&#8217;s behalf, and submitting to the SEC a Form ID (and any amendments thereto) or any other documents necessary or appropriate to obtain such credentials and legally binding the undersigned for purpose of the Form ID or such other documents&#59; and (ii) enrolling the undersigned in EDGAR Next or any successor filing system&#59; </font></div><div style="margin-bottom:12pt;padding-left:72pt;text-align:justify;text-indent:-36pt"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">(2)</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%;padding-left:22.02pt">act as an account administrator for the undersigned&#8217;s EDGAR account, including&#58; (i) appointing, removing and replacing account administrators, technical administrators, account users, and delegated entities&#59; (ii) maintaining the security of Filer&#8217;s EDGAR account, including modification of access codes&#59; (iii) maintaining, modifying and certifying the accuracy of information on the undersigned&#8217;s EDGAR account dashboard&#59; and (iv) taking any other actions contemplated by Rule 10 of Regulation S-T&#59;</font></div><div style="margin-bottom:12pt;padding-left:72pt;text-align:justify;text-indent:-36pt"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">(3)</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%;padding-left:22.02pt">cause Insmed Incorporated (the &#8220;</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%;text-decoration:underline">Company</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">&#8221;) to accept a delegation of authority from the undersigned&#8217;s EDGAR account administrators and authorize the Company&#8217;s EDGAR account administrators pursuant to that delegated entity designation to appoint, remove or replace users for the undersigned&#8217;s EDGAR account&#59;</font></div><div style="margin-bottom:12pt;padding-left:72pt;text-align:justify;text-indent:-36pt"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">(4)</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%;padding-left:22.02pt">execute for, and on behalf of, the undersigned, in the undersigned&#8217;s capacity as an officer and&#47;or director of the Company, Forms 3, 4 and 5 relating to the Company in accordance with Section 16(a) of the Exchange Act the rules and regulations promulgated thereunder, and Forms 144 in accordance with Rule 144 under the Securities Act of 1933, as amended (the &#8220;Securities Act&#8221;)&#59;</font></div><div style="margin-bottom:12pt;padding-left:72pt;text-align:justify;text-indent:-36pt"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">(5)</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%;padding-left:22.02pt">seek or obtain, as the undersigned&#8217;s representative and on the undersigned&#8217;s behalf, information on transactions in the Company&#8217;s securities from any third party, including brokers, employee benefit plan administrators and trustees, and </font></div><div style="height:72pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="text-align:center"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">1</font></div></div></div><hr style="page-break-after:always"><div style="min-height:72pt;width:100%"><div><font><br></font></div></div><div style="margin-bottom:12pt;padding-left:72pt;text-align:justify"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">the undersigned hereby authorizes any such person to release any such information to any attorney-in-fact and further approves and ratifies any such release of information&#59;</font></div><div style="margin-bottom:12pt;padding-left:72pt;text-align:justify;text-indent:-36pt"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">(6)</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%;padding-left:22.02pt">do and perform any and all acts for, and on behalf of, the undersigned that may be necessary or desirable to prepare, complete and execute any such Form 3, 4 or 5, or Forms 144, and any amendments thereto, or other required report and timely file such forms or reports with the SEC, the New York Stock Exchange and any stock exchange or similar authority as considered necessary or advisable under Section 16(a) of the Exchange Act or Rule 144 of the Securities Act&#59; and</font></div><div style="margin-bottom:12pt;padding-left:72pt;text-align:justify;text-indent:-36pt"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">(7)</font><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%;padding-left:22.02pt">take any other action of any type whatsoever in connection with the foregoing that, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by such attorney-in-fact on behalf of the undersigned pursuant to this Limited Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may approve in such attorney-in-fact&#8217;s sole discretion.</font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">&#160;&#160;&#160;&#160;The undersigned hereby acknowledges that (a) the foregoing attorneys-in-fact are serving in such capacity at the request of the undersigned&#59; (b) this Limited Power of Attorney authorizes, but does not require, each such attorney-in-fact to act in his or her discretion on information provided to such attorney-in-fact without independent verification of such information&#59; (c) any documents prepared and&#47;or executed by any attorney-in-fact on behalf of the undersigned pursuant to this Limited Power of Attorney shall be in such form and shall contain such information and disclosure as such attorney-in-fact, in his or her sole discretion, deems necessary or advisable&#59; (d) neither the Company nor any attorney-in-fact assumes (i) any liability for the undersigned&#8217;s responsibility to comply with the requirements of the Exchange Act or the Securities Act, (ii) any liability of the undersigned for any failure to comply with such requirements or (iii) any obligation or liability of the undersigned for profit disgorgement under Section 16(b) of the Exchange Act&#59; and (e) this Limited Power of Attorney does not relieve the undersigned from responsibility for compliance with the undersigned&#8217;s obligations under the Exchange Act or the Securities Act, including, without limitation, the reporting requirements under Section 16 of the Exchange Act. &#160;The undersigned also&#160;ratifies&#160;hereby any action previously taken by each of the foregoing attorneys-in-fact that would have been authorized by this Limited Power of Attorney if it had been in effect at the time such action was taken.</font></div><div style="text-align:justify"><font><br></font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">&#160;&#160;&#160;&#160;This Limited Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4 and 5 or Forms 144 with respect to the undersigned&#8217;s holdings of, and transactions in, securities issued by the Company, unless earlier revoked as to any attorney-in-fact by the undersigned in a signed writing delivered to such attorney-in-fact.</font></div><div style="height:72pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="text-align:center"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">2</font></div><div><font><br></font></div></div></div><div id="ic39b5ce6aa4d41e394ae5b3223d141c9_4"></div><hr style="page-break-after:always"><div style="min-height:72pt;width:100%"><div style="text-align:right"><font><br></font></div></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">&#160;&#160;&#160;&#160;IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of the date written below.</font></div><div style="padding-left:216pt;text-align:justify"><font><br></font></div><div style="padding-left:216pt;text-align:justify"><font><br></font></div><div style="padding-left:216pt;text-align:justify"><font><br></font></div><div style="padding-left:216pt;text-align:justify"><font><br></font></div><div style="padding-left:216pt;text-align:justify"><font><br></font></div><div style="padding-left:216pt;text-align:justify"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:48.717%"><tr><td style="width:1.0%"></td><td style="width:16.992%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:80.808%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:100%">By&#58;</font></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:100%;text-decoration:underline">&#47;s&#47; Roger Adsett</font></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:100%">Name&#58;</font></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:100%">Roger Adsett</font></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:100%">Date&#58;</font></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:100%">August 18, 2025</font></td></tr></table><font style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-weight:400;line-height:120%">&#160;&#160;&#160;&#160;</font></div><div style="height:72pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-top:6pt;text-align:center"><font><br></font></div></div></div></body></html>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
