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    Amendment: SEC Form SCHEDULE 13D/A filed by Nauticus Robotics Inc.

    8/13/25 3:26:23 PM ET
    $KITT
    Industrial Machinery/Components
    Industrials
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    SECURITIES AND EXCHANGE COMMISSION
    Washington, D.C. 20549


    SCHEDULE 13D

    Under the Securities Exchange Act of 1934

    (Amendment No. 4)


    Nauticus Robotics, Inc.

    (Name of Issuer)


    Common Stock

    (Title of Class of Securities)


    63911H207

    (CUSIP Number)


    William Kerber
    3917 NE 104TH ST,
    Oklahoma City, OK, 73131
    405-373-6600

    (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)
    08/11/2025

    (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.
    63911H207


    1 Name of reporting person

    KERBER WILLIAM XAVIER III
    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)

    PF
    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

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

    1,852,696.00
    8Shared Voting Power

    0.00
    9Sole Dispositive Power

    1,852,696.00
    10Shared Dispositive Power

    0.00
    11Aggregate amount beneficially owned by each reporting person

    1,852,696.00
    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)

    4.4 %
    14Type of Reporting Person (See Instructions)

    IN



    SCHEDULE 13D

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

    Common Stock
    (b)Name of Issuer:

    Nauticus Robotics, Inc.
    (c)Address of Issuer's Principal Executive Offices:

    17146 FEATHERCRAFT LANE, 17146 FEATHERCRAFT LANE, WEBSTER, TEXAS , 77598.
    Item 2.Identity and Background
    (a)
    WILLIAM XAVIER KERBER III
    (b)
    3917 NE 104TH ST Oklahoma City, OK. 73131
    (c)
    CEO Human Mode LLC 3917 NE 104TH ST Oklahoma City, OK. 73131
    (d)
    During the past 5 years, Mr. Kerber has not been convicted in any criminal proceeding (excluding traffic violations or similar misdemeanors).
    (e)
    During the past 5 years, Mr. Kerber has not been a party to any civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding such person was or is 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)
    United States
    Item 3.Source and Amount of Funds or Other Consideration
     
    All of the shares of Common Stock were acquired using Mr. Kerber's personal funds. No loans were involved in these purchases.
    Item 4.Purpose of Transaction
     
    As of the Issuer's recent 10-Q filing dated August 11, 2025 the Issuer stated total outstanding Common Stock of 42,267,643 shares. Mr. Kerber beneficially owns 1,852,696 shares or 4.4% of of the Issuer's outstanding Common Stock and has ceased to be a beneficial owner of five percent or more as of the date of the Issuer's 10-Q filing dated August 11, 2025.
    Item 5.Interest in Securities of the Issuer
    (a)
    As of the date of this Amendment No. 4, Mr. Kerber beneficially owns 1,852,696 shares or 4.4% of the Issuer's outstanding shares of Common Stock. The beneficial ownership percentages used in this Schedule are calculated based on the 42,267,643 shares of Common Stock of the Issuer outstanding as stated in the Issuer's recent 10-Q filing dated August 11, 2025.
    (b)
    As of the date of this Amendment No. 4, Mr. Kerber has sole voting and dispositive power of the 1,852,696 shares or 4.4 % of the Issuer's Common Stock.
    (c)
    Mr. Kerber has not effected any transactions in the Common Stock during the past 60 days or since his most recent Schedule 13D filing dated April 10, 2025.
    (e)
    Mr. Kerber ceased to be a beneficial owner of five percent or more of the Issuer's Common Stock as of the Issuer's most recent 10-Q filing dated August 11, 2025.
    Item 6.Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer
     
    As of the filing date of this Amendment, Mr. Kerber is not involved in any contracts, arrangements, under standings or relationships related to any securities of the Issuer.

        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.

     
    KERBER WILLIAM XAVIER III
     
    Signature:WILLIAM XAVIER KERBER III
    Name/Title:WILLIAM XAVIER KERBER III
    Date:08/13/2025
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