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    Amendment: SEC Form SCHEDULE 13D/A filed by Mercer International Inc.

    5/21/26 10:14:05 AM ET
    $MERC
    Paper
    Basic Materials
    Get the next $MERC 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)


    MERCER INTERNATIONAL INC.

    (Name of Issuer)


    Common Stock, par value $1.00

    (Title of Class of Securities)




    588056101

    (CUSIP Number)
    Peter R. Kellogg
    48 Wall Street, 30th Floor,
    New York, NY, 10005
    (212) 389-5841

    (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)
    05/19/2026

    (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).




    schemaVersion:


    SCHEDULE 13D

    CUSIP Number(s):
    588056101


    1 Name of reporting person

    Peter R. Kellogg
    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

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

    25,380,929.00
    8Shared Voting Power

    0.00
    9Sole Dispositive Power

    25,380,929.00
    10Shared Dispositive Power

    0.00
    11Aggregate amount beneficially owned by each reporting person

    24,469,540.00
    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)

    37.9 %
    14Type of Reporting Person (See Instructions)

    IN



    SCHEDULE 13D

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

    Common Stock, par value $1.00
    (b)Name of Issuer:

    MERCER INTERNATIONAL INC.
    (c)Address of Issuer's Principal Executive Offices:

    Suite 1120, 700 West Pender Street, Vancouver, BRITISH COLUMBIA, CANADA , V6C 1G8.
    Item 5.Interest in Securities of the Issuer
    (a)
    As of the close of business on May 19, 2026, Mr. Kellogg beneficially owned an aggregate of 25,380,929 shares, constituting approximately 37.9% of the shares outstanding.
    (b)
    As of the close of business on May 19, 2026, Mr. Kellogg beneficially owned an aggregate of 25,380,929 shares, constituting approximately 37.9% of the shares outstanding.
    (c)
    During May 12, 2026 through May 19, 2026, entities controlled by Mr. Kellogg purchased an aggregate of 1,000,000 shares at prices ranging from approximately $0.84 to $0.96 per share through the Nasdaq Stock Market. All such transactions have been reported on a Form 4 filed by Mr. Kellogg.

        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.

     
    Peter R. Kellogg
     
    Signature:/s/ Marguerite Gorman
    Name/Title:Marguerite Gorman, attorney-in-fact
    Date:05/19/2026
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