<SEC-DOCUMENT>0000895421-25-000564.txt : 20251107
<SEC-HEADER>0000895421-25-000564.hdr.sgml : 20251107
<ACCEPTANCE-DATETIME>20251107121406
ACCESSION NUMBER:		0000895421-25-000564
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20251107
DATE AS OF CHANGE:		20251107

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Lantheus Holdings, Inc.
		CENTRAL INDEX KEY:			0001521036
		STANDARD INDUSTRIAL CLASSIFICATION:	IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				352318913
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-88920
		FILM NUMBER:		251461467

	BUSINESS ADDRESS:	
		STREET 1:		331 TREBLE COVE ROAD
		CITY:			NORTH BILLERICA
		STATE:			MA
		ZIP:			01862
		BUSINESS PHONE:		978 671-8001

	MAIL ADDRESS:	
		STREET 1:		331 TREBLE COVE ROAD
		CITY:			NORTH BILLERICA
		STATE:			MA
		ZIP:			01862

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Lantheus MI Holdings, Inc.
		DATE OF NAME CHANGE:	20110517

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MORGAN STANLEY
		CENTRAL INDEX KEY:			0000895421
		STANDARD INDUSTRIAL CLASSIFICATION:	SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211]
		ORGANIZATION NAME:           	02 Finance
		EIN:				363145972
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G

	BUSINESS ADDRESS:	
		STREET 1:		1585 BROADWAY
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		212-761-4000

	MAIL ADDRESS:	
		STREET 1:		1585 BROADWAY
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MORGAN STANLEY DEAN WITTER & CO
		DATE OF NAME CHANGE:	19980326

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DEAN WITTER DISCOVER & CO
		DATE OF NAME CHANGE:	19960315
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:com="http://www.sec.gov/edgar/common" xmlns:g="http://xml.ms.com/ns/itlnc/filelink/US13GFiling/v1.0" xmlns:p="http://www.sec.gov/edgar/schedule13g">
  <headerData>
    <submissionType>SCHEDULE 13G</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0000895421</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>09/30/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0001521036</issuerCik>
        <issuerName>Lantheus Holdings, Inc.</issuerName>
        <issuerCusip>516544103</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>331 TREBLE COVE ROAD</com:street1>
          <com:city>NORTH BILLERICA</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>01862</com:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Morgan Stanley</reportingPersonName>
      <citizenshipOrOrganization>DE</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>3732420</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>3777712</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>3777712</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>5.6</classPercent>
      <typeOfReportingPerson>HC</typeOfReportingPerson>
      <typeOfReportingPerson>CO</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>Morgan Stanley Capital Services LLC</reportingPersonName>
      <citizenshipOrOrganization>DE</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>3552266</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>3552266</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>3552266</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>5.2</classPercent>
      <typeOfReportingPerson>BD</typeOfReportingPerson>
      <typeOfReportingPerson>CO</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>Lantheus Holdings, Inc.</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>331 TREBLE COVE ROAD, NORTH BILLERICA, MA, 01862</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>1: Morgan Stanley 2: Morgan Stanley Capital Services LLC</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>1: 1585 Broadway, New York, NY 10036 ;2: 1585 Broadway, New York, NY 10036</principalBusinessOfficeOrResidenceAddress>
        <citizenship>1: Delaware 2: Delaware</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>N</notApplicableFlag>
        <typeOfPersonFiling>BD</typeOfPersonFiling>
        <typeOfPersonFiling>HC</typeOfPersonFiling>
      </item3>
      <item4>
        <amountBeneficiallyOwned>See the response(s) to Item 9 on the attached cover page(s).</amountBeneficiallyOwned>
        <classPercent>5.6</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>See the response(s) to Item 5 on the attached cover page(s).</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>See the response(s) to Item 6 on the attached cover page(s).</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>See the response(s) to Item 7 on the attached cover page(s).</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>See the response(s) to Item 8 on the attached cover page(s).</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>Y</notApplicableFlag>
        <classOwnership5PercentOrLess>N</classOwnership5PercentOrLess>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>N</notApplicableFlag>
        <subsidiaryIdentificationAndClassification>See Exhibit 99.2</subsidiaryIdentificationAndClassification>
      </item7>
      <item8>
        <notApplicableFlag>Y</notApplicableFlag>
      </item8>
      <item9>
        <notApplicableFlag>Y</notApplicableFlag>
      </item9>
      <item10>
        <notApplicableFlag>N</notApplicableFlag>
        <certifications>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

					*  In Accordance with the Securities and Exchange Commission Release
					No. 34-39538 (January 12, 1998) (the "Release"), this filing reflects the
					securities beneficially owned, or that may be deemed to be beneficially owned,
					by certain operating units (collectively, the "MS Reporting Units") of Morgan
					Stanley and its subsidiaries and affiliates (collectively, "MS").  This filing
					does not reflect securities, if any, beneficially owned by any operating units
					of MS whose ownership of securities is disaggregated from that of the MS
					Reporting Units in accordance with the Release.
					</certifications>
      </item10>
    </items>
    <exhibitInfo>

					EXHIBIT NO.                         EXHIBITS
					------------------         ------------------------------------

					99.1                       Joint Filing Agreement

					99.2                       Item 7 Information

					*  Attention. Intentional misstatements or omissions of fact constitute federal
					criminal violations (see 18 U.S.C. 1001).
				</exhibitInfo>
    <signatureInformation>
      <reportingPersonName>Morgan Stanley</reportingPersonName>
      <signatureDetails>
        <signature>Chris O'Hara</signature>
        <title>Authorized Signatory, Morgan Stanley</title>
        <date>11/07/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Morgan Stanley Capital Services LLC</reportingPersonName>
      <signatureDetails>
        <signature>Chris O'Hara</signature>
        <title>Authorized Signatory, Morgan Stanley Capital Services LLC</title>
        <date>11/07/2025</date>
      </signatureDetails>
    </signatureInformation>
  </formData>

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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1 CHARTER
<SEQUENCE>2
<FILENAME>EXHIBIT_NO.99.1.txt
<DESCRIPTION>EXHIBIT NO. 99.1 TO SCHEDULE 13G JOINT FILING AGREEMENT
<TEXT>
CUSIP No.516544103                     13G
--------------------------------------------------------------------------------

                       EXHIBIT NO. 99.1 TO SCHEDULE 13G
                            JOINT FILING AGREEMENT
              ---------------------------------------------------


                              November 07, 2025
              ---------------------------------------------------

              MORGAN STANLEY and Morgan Stanley Capital Services LLC hereby

              agree that, unless differentiated, this Schedule 13G is filed on

              behalf of each of the parties.


           MORGAN STANLEY

           BY: /s/ Chris O'Hara
           ---------------------------------------------------------------------
           Chris O'Hara/Authorized Signatory, Morgan Stanley

           Morgan Stanley Capital Services LLC

           BY: /s/ Chris O'Hara
           ---------------------------------------------------------------------
           Chris O'Hara/Authorized Signatory,
           Morgan Stanley Capital Services LLC


*  Attention. Intentional misstatements or omissions of fact constitute federal
criminal violations (see 18 U.S.C. 1001).
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2 OPIN COUNSEL
<SEQUENCE>3
<FILENAME>EXHIBIT_NO.99.2.txt
<DESCRIPTION>EXHIBIT NO. 99.2 ITEM 7 INFORMATION
<TEXT>
CUSIP No.516544103                     13G
--------------------------------------------------------------------------------

                                 EXHIBIT NO. 99.2
                                ------------------

                                ITEM 7 INFORMATION


             The securities being reported on by Morgan Stanley as a parent

     holding company are owned, or may be deemed to be beneficially owned, by

     Morgan Stanley Capital Services LLC, a wholly-owned subsidiary of Morgan

     Stanley.

</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
