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    Amendment: SEC Form SCHEDULE 13D/A filed by Checkpoint Therapeutics Inc.

    6/3/25 6:46:56 PM ET
    $CKPT
    Biotechnology: Pharmaceutical Preparations
    Health Care
    Get the next $CKPT alert in real time by email



    SECURITIES AND EXCHANGE COMMISSION
    Washington, D.C. 20549


    SCHEDULE 13D

    Under the Securities Exchange Act of 1934

    (Amendment No. 11)


    Checkpoint Therapeutics, Inc.

    (Name of Issuer)


    Common Stock, $0.0001 Par Value

    (Title of Class of Securities)


    162828206

    (CUSIP Number)


    Fortress Biotech, Inc.
    1111 Kane Concourse, Suite 301
    Bay Harbor Island, FL, 33154
    (718) 652-4500

    (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)
    05/30/2025

    (Date of Event Which Requires Filing of This Statement)


    If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. Checkbox not checked

    The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).






    SCHEDULE 13D

    CUSIP No.
    162828206


    1 Name of reporting person

    Fortress Biotech, Inc.
    2Check the appropriate box if a member of a Group (See Instructions)

    Checkbox not checked  (a)
    Checkbox not checked  (b)
    3SEC use only
    4 Source of funds (See Instructions)

    OO
    5 Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

    Checkbox not checked
    6Citizenship or place of organization

    DELAWARE
    Number of Shares Beneficially Owned by Each Reporting Person With:
    7Sole Voting Power

    0.00
    8Shared Voting Power

    0.00
    9Sole Dispositive Power

    0.00
    10Shared Dispositive Power

    0.00
    11Aggregate amount beneficially owned by each reporting person

    0.00
    12Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

    Checkbox not checked
    13Percent of class represented by amount in Row (11)

    0 %
    14Type of Reporting Person (See Instructions)

    CO



    SCHEDULE 13D

    Item 1.Security and Issuer
    (a)Title of Class of Securities:

    Common Stock, $0.0001 Par Value
    (b)Name of Issuer:

    Checkpoint Therapeutics, Inc.
    (c)Address of Issuer's Principal Executive Offices:

    95 Sawyer Road, Suite 110, Waltham, MASSACHUSETTS , 02453.
    Item 1 Comment:
    This Amendment No. 11 to Schedule 13D (this "Amendment No. 11") amends and supplements the Schedule 13D filed on May 26, 2017 (as amended and supplemented prior to the filing of this Amendment No. 11, the "Original Schedule 13D" and together with this Amendment No. 11, the "Schedule 13D") relating to the common stock, par value $0.0001 per share (the "Common Stock") of Checkpoint Therapeutics, Inc. (the "Issuer"), by Fortress Biotech, Inc. (the "Reporting Person"). The Items below amend the information disclosed under the corresponding Items of the Original Schedule 13D as described below. Except as specifically provided herein, this Amendment No. 11 does not modify any of the information previously reported on the Original Schedule 13D.
    Item 2.Identity and Background
    (a)
    This Schedule 13D/A is being filed on behalf of the Reporting Person pursuant to Rule 13d-1 of Regulation D-G under the Act.
    (b)
    The address of the Reporting Person's principal business and principal office is 1111 Kane Concourse, Suite 301, Bay Harbor Islands, Florida 33154.
    (c)
    The principal business of the Reporting Person is acquiring, developing and commercializing novel pharmaceutical and biotechnology products both within the Reporting Person and through certain of its subsidiary companies.
    (d)
    During the last five years, the Reporting Person has not been convicted in any criminal proceeding (excluding traffic violations or similar misdemeanors).
    (e)
    During the last five years, the Reporting Person has not been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction resulting in it being subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.
    (f)
    The Reporting Person is organized under the laws of the state of Delaware.
    Item 4.Purpose of Transaction
     
    Merger Agreement. On March 9, 2025, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement") by and among the Issuer, Sun Pharmaceutical Industries, Inc., a Delaware corporation ("Parent"), and Snoopy Merger Sub, Inc., a Delaware corporation and wholly owned subsidiary of Parent ("Merger Sub"). On May 30, 2025 (the "Closing Date"), Merger Sub merged with and into the Issuer pursuant to the Merger Agreement, with the Issuer continuing as the surviving corporation and a wholly owned subsidiary of Parent (the "Merger"). As a result of the Merger, each issued and outstanding share of capital stock in the Issuer that was previously held by the Reporting Person (including both Common Stock and separately-held Class A Common Stock) was automatically canceled and ceased to exist and was converted into the right to receive: (i) $4.10 in cash, without interest, and (ii) one non-tradable contingent value right (a "CVR"), which represents the right to receive a contingent cash payment of up to $0.70 upon the achievement of a specified milestone.
    Item 5.Interest in Securities of the Issuer
    (a)
    As a result of the Merger, the Reporting Person does not beneficially own any shares of the Issuer's common stock or Class A common stock.
    (b)
    As a result of the Merger, the Reporting Person does not beneficially own any shares of the Issuer's common stock or Class A common stock.
    (c)
    Except as set forth in this Amendment No. 11, the Reporting Person has not effected any transaction in the Issuer's common stock during the past 60 days, other than the transfer of an aggregate of 100,000 shares of the Issuer's common stock to Lindsay A. Rosenwald, M.D., the Reporting Person's Chairman, President and Chief Executive Officer, and Michael S. Weiss, the Reporting Person's Executive Vice Chairman, upon their exercise of certain previously outstanding Common Stock Warrants dated July 15, 2015, as amended by the Amended and Restated Common Stock Warrant dated December 12, 2016, originally issued by the Reporting Person to such individuals.
    (d)
    No person has the power to direct the receipt of dividends on or the proceeds of sales of, the shares of common stock and Class A common stock reported on this Schedule 13D.
    (e)
    On the Closing Date, the Reporting Person ceased to be the beneficial owner of more than five percent of the Issuer's common stock.
    Item 6.Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer
     
    Item 6 of the Schedule 13D is hereby amended and supplemented as follows: The information set forth in Item 4 of this Amendment No. 11 is incorporated by reference into this Item 6 as if restated in full.

        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.

     
    Fortress Biotech, Inc.
     
    Signature:/s/ Lindsay A. Rosenwald
    Name/Title:Lindsay A. Rosenwald, M.D. / Chairman, President and Chief Executive Officer
    Date:06/03/2025
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