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

    9/12/25 7:18:49 PM ET
    $RBRK
    Computer Software: Prepackaged Software
    Technology
    Get the next $RBRK 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. 1)


    RUBRIK, INC.

    (Name of Issuer)


    Class A Common Stock

    (Title of Class of Securities)


    781154109

    (CUSIP Number)


    Anne-Kathrin Lalendran
    c/o Rubrik Inc., 3495 Deer Creek Road
    Palo Alto, CA, 94304
    884-478-2745

    (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)
    09/12/2025

    (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 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.
    781154109


    1 Name of reporting person

    Bipul Sinha
    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

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

    13,791,466.00
    8Shared Voting Power

    0.00
    9Sole Dispositive Power

    13,791,466.00
    10Shared Dispositive Power

    0.00
    11Aggregate amount beneficially owned by each reporting person

    13,791,466.00
    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)

    8.9 %
    14Type of Reporting Person (See Instructions)

    IN



    SCHEDULE 13D

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

    Class A Common Stock
    (b)Name of Issuer:

    RUBRIK, INC.
    (c)Address of Issuer's Principal Executive Offices:

    3495 Deer Creek Road, Palo Alto, CALIFORNIA , 94304.
    Item 1 Comment:
    This Amendment No. 1 ("Amendment No. 1") to Schedule 13D relates to the shares of Class A common stock, $0.00001 par value per share (the "Class A Common Stock"), of Rubrik, Inc., a Delaware corporation (the "Issuer"), and amends and supplements the initial statement on Schedule 13D filed by Bipul Sinha (the "Reporting Person") with the Securities and Exchange Commission on April 1, 2025, Unless otherwise defined herein, capitalized terms used in this Amendment No. 1 shall have the meanings ascribed to them in the Schedule 13D. Unless amended or supplemented below, the information in the Schedule 13D remains unchanged.
    Item 5.Interest in Securities of the Issuer
    (a)
    Rows 11 and 13 of the Reporting Person's cover page to this Schedule 13D set forth the aggregate number of shares of Class A Common Stock and percentages of the shares of Class A Common Stock beneficially owned by the Reporting Person and are incorporated herein by referenced. The percentage set forth in row 13 is based upon 142,085,609 shares of the Issuer's Class A Common Stock outstanding as of August 31, 2025, as reported in the Issuer's Form 10-Q filed the SEC on September 10, 2025. The Reporting Person's ownership of the Issuer's securities includes 2,499,975 shares issuable within 60 days of the date of this report, upon the exercise of stock options held by the Reporting Person.
    (b)
    Rows 7 through 10 of the Reporting Person's cover page to this Schedule 13D set forth the number of shares of Class A Common Stock as to which such Reporting Person has the sole or shared power to vote or direct the vote and sole or shared power to dispose or to direct the disposition and are incorporated by reference.
    (c)
    Except as set forth below, the Reporting Person has not effected any transactions in the Class A Common Stock during the past sixty days: Sale of Class A Common Stock: On September 12, 2025, the Reporting Person sold 615,807 shares of the Issuer's Class A Common Stock. Gift of Shares: On September 12, 2025, the Reporting Person gifted 150,000 shares of the Issuer's Class A Common Stock.
    (d)
    Not applicable.
    (e)
    Not applicable.

        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.

     
    Bipul Sinha
     
    Signature:/s/ Bipul Sinha
    Name/Title:Bipul Sinha
    Date:09/12/2025
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