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    Amendment: SEC Form SCHEDULE 13G/A filed by Lantheus Holdings Inc.

    11/12/25 12:22:21 PM ET
    $LNTH
    Biotechnology: In Vitro & In Vivo Diagnostic Substances
    Health Care
    Get the next $LNTH alert in real time by email



    SECURITIES AND EXCHANGE COMMISSION
    Washington, D.C. 20549


    SCHEDULE 13G


    UNDER THE SECURITIES EXCHANGE ACT OF 1934
    (Amendment No. 3)


    Lantheus Holdings, Inc.

    (Name of Issuer)


    Common Stock, par value $0.01 per share (the "Shares")

    (Title of Class of Securities)


    46489V104

    (CUSIP Number)


    09/30/2025

    (Date of Event Which Requires Filing of this Statement)


    Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
    Checkbox not checked   Rule 13d-1(b)
    Checkbox checked   Rule 13d-1(c)
    Checkbox not checked   Rule 13d-1(d)






    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Farallon Capital Partners, L.P.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    CALIFORNIA
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    278,896.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    278,896.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    278,896.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    0.4 %
    12Type of Reporting Person (See Instructions)

    PN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Farallon Capital Institutional Partners, L.P.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    CALIFORNIA
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    328,036.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    328,036.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    328,036.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    0.5 %
    12Type of Reporting Person (See Instructions)

    PN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Farallon Capital Institutional Partners II, L.P.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    CALIFORNIA
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    65,713.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    65,713.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    65,713.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    0.1 %
    12Type of Reporting Person (See Instructions)

    PN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Farallon Capital Institutional Partners III, L.P.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    DELAWARE
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    38,741.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    38,741.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    38,741.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    0.1 %
    12Type of Reporting Person (See Instructions)

    PN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Four Crossings Institutional Partners V, L.P.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    DELAWARE
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    59,044.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    59,044.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    59,044.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    0.1 %
    12Type of Reporting Person (See Instructions)

    PN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Farallon Capital Offshore Investors II, L.P.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    CAYMAN ISLANDS
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    642,399.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    642,399.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    642,399.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    0.9 %
    12Type of Reporting Person (See Instructions)

    PN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Farallon Capital (AM) Investors, L.P.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    DELAWARE
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    40,413.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    40,413.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    40,413.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    0.1 %
    12Type of Reporting Person (See Instructions)

    PN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Farallon Capital F5 Master I, L.P.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    CAYMAN ISLANDS
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    95,647.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    95,647.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    95,647.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    0.1 %
    12Type of Reporting Person (See Instructions)

    PN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Farallon Healthcare Partners Master, L.P.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    CAYMAN ISLANDS
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    1,928,338.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    1,928,338.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    1,928,338.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    2.8 %
    12Type of Reporting Person (See Instructions)

    PN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Farallon Partners, L.L.C.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    DELAWARE
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,381,580.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,381,580.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,381,580.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5 %
    12Type of Reporting Person (See Instructions)

    OO


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Farallon Institutional (GP) V, L.L.C.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    DELAWARE
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    59,044.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    59,044.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    59,044.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    0.1 %
    12Type of Reporting Person (See Instructions)

    OO


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Farallon F5 (GP), L.L.C.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    DELAWARE
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    95,647.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    95,647.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    95,647.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    0.1 %
    12Type of Reporting Person (See Instructions)

    OO


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Farallon Healthcare Partners (GP), L.L.C.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    DELAWARE
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    1,928,338.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    1,928,338.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    1,928,338.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    2.8 %
    12Type of Reporting Person (See Instructions)

    OO


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Dapice Joshua J.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Dreyfuss, Philip D.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Dunn Hannah E.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Fried, Richard B
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Gehani, Varun N.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Giauque, Nicolas
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    FRANCE
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Kim, David T.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Linn, Michael G.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Luo Patrick (Cheng)
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    CHINA
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Patel, Rajiv A.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Roberts, Jr., Thomas G.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Saito Edric C.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Seybold, William
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Short Daniel S.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Spokes, Andrew J. M.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED KINGDOM
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Warren, John R.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    CUSIP No.
    46489V104


    1Names of Reporting Persons

    Wehrly, Mark C.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    3,477,227.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    3,477,227.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,477,227.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    5.1 %
    12Type of Reporting Person (See Instructions)

    IN


    SCHEDULE 13G

    Item 1. 
    (a)Name of issuer:

    Lantheus Holdings, Inc.
    (b)Address of issuer's principal executive offices:

    201 Burlington Road, South Building, Bedford, Massachusetts, 01730
    Item 2. 
    (a)Name of person filing:

    This statement is filed by the entities and persons listed below, all of whom together are referred to herein as the "Reporting Persons." (i) Farallon Capital Partners, L.P., a California limited partnership ("FCP"), with respect to the Shares held by it; (ii) Farallon Capital Institutional Partners, L.P., a California limited partnership ("FCIP"), with respect to the Shares held by it; (iii) Farallon Capital Institutional Partners II, L.P., a California limited partnership ("FCIP II"), with respect to the Shares held by it; (iv) Farallon Capital Institutional Partners III, L.P., a Delaware limited partnership ("FCIP III"), with respect to the Shares held by it; (v) Four Crossings Institutional Partners V, L.P., a Delaware limited partnership ("FCIP V"), with respect to the Shares held by it; (vi) Farallon Capital Offshore Investors II, L.P., a Cayman Islands exempted limited partnership ("FCOI II"), with respect to the Shares held by it; (vii) Farallon Capital (AM) Investors, L.P., a Delaware limited partnership ("FCAMI"), with respect to the Shares held by it; (viii) Farallon Capital F5 Master I, L.P., a Cayman Islands exempted limited partnership ("F5MI"), with respect to the Shares held by it; and (ix) Farallon Healthcare Partners Master, L.P., a Cayman Islands exempted limited partnership ("FHPM"), with respect to the Shares held by it. FCP, FCIP, FCIP II, FCIP III, FCIP V, FCOI II, FCAMI, F5MI and FHPM are together referred to herein as the "Farallon Funds." (x) Farallon Partners, L.L.C., a Delaware limited liability company (the "Farallon General Partner"), which is the general partner of each of FCP, FCIP, FCIP II, FCIP III, FCOI II and FCAMI and the sole member of each of the FCIP V General Partner (as defined below) and the FHPM General Partner (as defined below), with respect to the Shares held by each of the Farallon Funds other than F5MI. (xi) Farallon Institutional (GP) V, L.L.C., a Delaware limited liability company (the "FCIP V General Partner"), which is the general partner of FCIP V, with respect to the Shares held by FCIP V. (xii) Farallon F5 (GP), L.L.C., a Delaware limited liability company (the "F5MI General Partner"), which is the general partner of F5MI, with respect to the Shares held by F5MI. (xiii) Farallon Healthcare Partners (GP), L.L.C., a Delaware limited liability company (the "FHPM General Partner"), which is the general partner of FHPM, with respect to the Shares held by FHPM. (xiv) The following persons, each of whom is a managing member or senior managing member, as the case may be, of the Farallon General Partner and a manager or senior manager, as the case may be, of the FCIP V General Partner, the F5MI General Partner and the FHPM General Partner, with respect to the Shares held by the Farallon Funds: Joshua J. Dapice ("Dapice"); Philip D. Dreyfuss ("Dreyfuss"); Hannah E. Dunn ("Dunn"); Richard B. Fried ("Fried"); Varun N. Gehani ("Gehani"); Nicolas Giauque ("Giauque"); David T. Kim ("Kim"); Michael G. Linn ("Linn"); Patrick (Cheng) Luo ("Luo"); Rajiv A. Patel ("Patel"); Thomas G. Roberts, Jr. ("Roberts"); Edric C. Saito ("Saito"); William Seybold ("Seybold"); Daniel S. Short ("Short"); Andrew J. M. Spokes ("Spokes"); John R. Warren ("Warren"); and Mark C. Wehrly ("Wehrly"). Dapice, Dreyfuss, Dunn, Fried, Gehani, Giauque, Kim, Linn, Luo, Patel, Roberts, Saito, Seybold, Short, Spokes, Warren and Wehrly are together referred to herein as the "Farallon Individual Reporting Persons."
    (b)Address or principal business office or, if none, residence:

    The address of the principal business office of each of the Reporting Persons is c/o Farallon Capital Management, L.L.C., One Maritime Plaza, Suite 2100, San Francisco, California 94111.
    (c)Citizenship:

    The citizenship of each of the Farallon Funds, the Farallon General Partner, the FCIP V General Partner, the F5MI General Partner and the FHPM General Partner is set forth above. Each of the Farallon Individual Reporting Persons, other than Giauque, Luo and Spokes, is a citizen of the United States. Giauque is a citizen of France. Luo is a citizen of China. Spokes is a citizen of the United Kingdom.
    (d)Title of class of securities:

    Common Stock, par value $0.01 per share (the "Shares")
    (e)CUSIP No.:

    46489V104
    Item 3.If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
    (a)Checkbox not checked   Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
    (b)Checkbox not checked   Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
    (c)Checkbox not checked   Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
    (d)Checkbox not checked   Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
    (e)Checkbox not checked   An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
    (f)Checkbox not checked   An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
    (g)Checkbox not checked   A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
    (h)Checkbox not checked   A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
    (i)Checkbox not checked   A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
    (j)Checkbox not checked   A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
           please specify the type of institution:
    (k)Checkbox not checked   Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
     
    Item 4.Ownership
    (a)Amount beneficially owned:

    The information required by Items 4(a) - (c) and set forth in Rows 5 through 11 of the cover page for each Reporting Person is incorporated herein by reference for each such Reporting Person. The Shares reported hereby for the Farallon Funds are held directly by the Farallon Funds. The Farallon General Partner, as the general partner of FCP, FCIP, FCIP II, FCIP III, FCOI II and FCAMI and the sole member of the FCIP V General Partner and the FHPM General Partner, may be deemed to be a beneficial owner of all such Shares held by the Farallon Funds other than F5MI. The FCIP V General Partner, as the general partner of FCIP V, may be deemed to be a beneficial owner of all such Shares held by FCIP V. The F5MI General Partner, as the general partner of F5MI, may be deemed to be a beneficial owner of all such Shares held by F5MI. The FHPM General Partner, as the general partner of FHPM, may be deemed to be a beneficial owner of all such Shares held by FHPM. Each of the Farallon Individual Reporting Persons, as a managing member or senior managing member, as the case may be, of the Farallon General Partner and a manager or senior manager, as the case may be, of the FCIP V General Partner, the F5MI General Partner and the FHPM General Partner, in each case with the power to exercise investment discretion, may be deemed to be a beneficial owner of all such Shares held by the Farallon Funds. Each of the Farallon General Partner, the FCIP V General Partner, the F5MI General Partner, the FHPM General Partner and the Farallon Individual Reporting Persons hereby disclaims any beneficial ownership of any such Shares.
    (b)Percent of class:

    The information required by Items 4(a) - (c) and set forth in Rows 5 through 11 of the cover page for each Reporting Person is incorporated herein by reference for each such Reporting Person.
    (c)Number of shares as to which the person has:
     (i) Sole power to vote or to direct the vote:

    The information required by Items 4(a) - (c) and set forth in Rows 5 through 11 of the cover page for each Reporting Person is incorporated herein by reference for each such Reporting Person.

     (ii) Shared power to vote or to direct the vote:

    The information required by Items 4(a) - (c) and set forth in Rows 5 through 11 of the cover page for each Reporting Person is incorporated herein by reference for each such Reporting Person.

     (iii) Sole power to dispose or to direct the disposition of:

    The information required by Items 4(a) - (c) and set forth in Rows 5 through 11 of the cover page for each Reporting Person is incorporated herein by reference for each such Reporting Person.

     (iv) Shared power to dispose or to direct the disposition of:

    The information required by Items 4(a) - (c) and set forth in Rows 5 through 11 of the cover page for each Reporting Person is incorporated herein by reference for each such Reporting Person.

    Item 5.Ownership of 5 Percent or Less of a Class.
     
    Item 6.Ownership of more than 5 Percent on Behalf of Another Person.
     
    Not Applicable
    Item 7.Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
     
    Not Applicable
    Item 8.Identification and Classification of Members of the Group.
     
    If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(J), so indicate under Item 3(j) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group.


    The Reporting Persons are filing this Schedule 13G pursuant to Section 240.13d-1(c). The Reporting Persons neither disclaim nor affirm the existence of a group among them. Each Reporting Person is a beneficial owner only of the securities reported by it on its cover page.
    Item 9.Notice of Dissolution of Group.
     
    Not Applicable

    Item 10.Certifications:
     
    By signing below I certify that, to the best of my knowledge and belief, the securities referred to above 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.

        SIGNATURE 
     
    After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

     
    Farallon Capital Partners, L.P.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, Managing Member of its General Partner
    Date:11/12/2025
     
    Farallon Capital Institutional Partners, L.P.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, Managing Member of its General Partner
    Date:11/12/2025
     
    Farallon Capital Institutional Partners II, L.P.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, Managing Member of its General Partner
    Date:11/12/2025
     
    Farallon Capital Institutional Partners III, L.P.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, Managing Member of its General Partner
    Date:11/12/2025
     
    Four Crossings Institutional Partners V, L.P.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, Manager of its General Partner
    Date:11/12/2025
     
    Farallon Capital Offshore Investors II, L.P.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, Managing Member of its General Partner
    Date:11/12/2025
     
    Farallon Capital (AM) Investors, L.P.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, Managing Member of its General Partner
    Date:11/12/2025
     
    Farallon Capital F5 Master I, L.P.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, Manager of its General Partner
    Date:11/12/2025
     
    Farallon Healthcare Partners Master, L.P.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, Manager of its General Partner
    Date:11/12/2025
     
    Farallon Partners, L.L.C.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, Managing Member
    Date:11/12/2025
     
    Farallon Institutional (GP) V, L.L.C.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, Manager
    Date:11/12/2025
     
    Farallon F5 (GP), L.L.C.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, Manager
    Date:11/12/2025
     
    Farallon Healthcare Partners (GP), L.L.C.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, Manager
    Date:11/12/2025
     
    Dapice Joshua J.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, as attorney-in-fact
    Date:11/12/2025
     
    Dreyfuss, Philip D.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, as attorney-in-fact
    Date:11/12/2025
     
    Dunn Hannah E.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn
    Date:11/12/2025
     
    Fried, Richard B
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, as attorney-in-fact
    Date:11/12/2025
     
    Gehani, Varun N.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, as attorney-in-fact
    Date:11/12/2025
     
    Giauque, Nicolas
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, as attorney-in-fact
    Date:11/12/2025
     
    Kim, David T.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, as attorney-in-fact
    Date:11/12/2025
     
    Linn, Michael G.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, as attorney-in-fact
    Date:11/12/2025
     
    Luo Patrick (Cheng)
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, as attorney-in-fact
    Date:11/12/2025
     
    Patel, Rajiv A.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, as attorney-in-fact
    Date:11/12/2025
     
    Roberts, Jr., Thomas G.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, as attorney-in-fact
    Date:11/12/2025
     
    Saito Edric C.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, as attorney-in-fact
    Date:11/12/2025
     
    Seybold, William
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, as attorney-in-fact
    Date:11/12/2025
     
    Short Daniel S.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, as attorney-in-fact
    Date:11/12/2025
     
    Spokes, Andrew J. M.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, as attorney-in-fact
    Date:11/12/2025
     
    Warren, John R.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, as attorney-in-fact
    Date:11/12/2025
     
    Wehrly, Mark C.
     
    Signature:/s/ Hannah E. Dunn
    Name/Title:Hannah E. Dunn, as attorney-in-fact
    Date:11/12/2025
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    BEDFORD, Mass., Oct. 23, 2025 (GLOBE NEWSWIRE) -- Lantheus Holdings, Inc. (the "Company") (NASDAQ:LNTH) today announced that it will host a conference call and webcast at 8:00 a.m. ET on Thursday, November 6, 2025, to discuss its financial results and provide a business update for the third quarter of 2025. To access the conference call or webcast, participants should register online at https://investor.lantheus.com/news-events/calendar-of-events. To avoid delays, we encourage participants to register fifteen minutes ahead of the scheduled start time. A replay will be available approximately two hours after completion of the webcast and will be archived on the same web page for at least

    10/23/25 8:30:00 AM ET
    $LNTH
    Biotechnology: In Vitro & In Vivo Diagnostic Substances
    Health Care

    Lantheus Reports Second Quarter 2025 Financial Results and Provides Business Update

    Recorded second quarter 2025 worldwide revenue of $378.0 million, GAAP fully diluted earnings per share of $1.12, adjusted fully diluted earnings per share of $1.57 and free cash flow of $79.1 millionAnnounced FDA acceptance of NDA for new formulation for piflufolastat F 18 PSMA PET imaging agent with a PDUFA date of March 6, 2026Closed acquisition of Life Molecular Imaging in July, immediately expanding near- and long-term growth profile and commercial portfolio with Neuraceq® (florbetaben F 18 injection), a globally approved beta-amyloid targeted radiodiagnostic for Alzheimer's disease; FDA label expansion for Neuraceq in JuneBoard of Directors authorized a program to repurchase up to $400

    8/6/25 7:00:00 AM ET
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    Biotechnology: In Vitro & In Vivo Diagnostic Substances
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    $LNTH
    Leadership Updates

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    Lantheus Completes Acquisition of Life Molecular Imaging and Appoints Dr. Ludger Dinkelborg as Head of R&D

    BEDFORD, Mass., July 22, 2025 (GLOBE NEWSWIRE) -- Lantheus Holdings, Inc. ("Lantheus" or the "Company") (NASDAQ:LNTH), today announced the successful completion of its previously disclosed acquisition of Life Molecular Imaging Ltd. ("Life Molecular"), a subsidiary of Life Healthcare Group Holdings Ltd ("Life Healthcare"). As part of the acquisition, Ludger Dinkelborg, PhD, formerly CEO and Managing Director of Life Molecular Imaging, has been appointed Head of Research and Development at Lantheus effective August 1, 2025. "We are thrilled to welcome Dr. Dinkelborg and the entire Life Molecular team to Lantheus," said Brian Markison, CEO of Lantheus. "Ludger's proven leadership, scientific

    7/22/25 7:00:00 AM ET
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    Biotechnology: In Vitro & In Vivo Diagnostic Substances
    Health Care

    PharmaLogic Announces Appointment of Etienne Montagut as President and Chief Executive Officer

    BOCA RATON, Fla., June 2, 2025 /PRNewswire/ -- PharmaLogic Holdings Corp. ("PharmaLogic" or "the Company"), a leading contract development and manufacturing organization (CDMO) specialized in radiopharmaceuticals, today announces the Company has appointed Etienne Montagut, currently serving as President, to the position of President and Chief Executive Officer, effective as of 1 June 2025. Mr. Montagut brings over 25 years of senior leadership experience in the pharmaceutical sector, with a solid track record of driving growth and executing strategic transformation across glob

    6/2/25 8:00:00 AM ET
    $GEHC
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    Medical Electronics
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    Biotechnology: In Vitro & In Vivo Diagnostic Substances

    Lantheus Appoints Phuong Khanh (P.K.) Morrow, M.D., as New Board Member

    BEDFORD, Mass., Jan. 30, 2025 (GLOBE NEWSWIRE) -- Lantheus Holdings, Inc. ("Lantheus") (NASDAQ:LNTH), the leading radiopharmaceutical-focused company committed to enabling clinicians to Find, Fight and Follow disease to deliver better patient outcomes, today announced the appointment of Phuong Khanh (P.K.) Morrow, M.D. to Lantheus' Board of Directors ("Board"), effective February 1, 2025. Dr. Morrow is an experienced pharmaceutical executive and physician-scientist with deep expertise leading end-to-end clinical development in the field of oncology. As an independent director, Dr. Morrow will serve as a member of the Board's Science and Technology Committee, where her proven track record i

    1/30/25 8:30:00 AM ET
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    Biotechnology: In Vitro & In Vivo Diagnostic Substances
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    $LNTH
    Large Ownership Changes

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    SEC Form SC 13G filed by Lantheus Holdings Inc.

    SC 13G - Lantheus Holdings, Inc. (0001521036) (Subject)

    11/14/24 8:21:14 PM ET
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    Biotechnology: In Vitro & In Vivo Diagnostic Substances
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    Amendment: SEC Form SC 13G/A filed by Lantheus Holdings Inc.

    SC 13G/A - Lantheus Holdings, Inc. (0001521036) (Subject)

    11/14/24 3:29:28 PM ET
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    Biotechnology: In Vitro & In Vivo Diagnostic Substances
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    SEC Form SC 13G filed by Lantheus Holdings Inc.

    SC 13G - Lantheus Holdings, Inc. (0001521036) (Subject)

    2/14/24 1:18:20 PM ET
    $LNTH
    Biotechnology: In Vitro & In Vivo Diagnostic Substances
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