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

    11/14/25 5:02:29 PM ET
    $KVYO
    Computer Software: Prepackaged Software
    Technology
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    SECURITIES AND EXCHANGE COMMISSION
    Washington, D.C. 20549


    SCHEDULE 13D

    Under the Securities Exchange Act of 1934

    (Amendment No. 3)


    Klaviyo, Inc.

    (Name of Issuer)


    Series A Common Stock

    (Title of Class of Securities)


    49845K101

    (CUSIP Number)


    Shopify Strategic Holdings 3
    251 Little Falls Drive,
    Wilmington, DE, 19808
    6132416868

    (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)
    08/29/2025

    (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.
    49845K101


    1 Name of reporting person

    Shopify Strategic Holdings 3 LLC
    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, WC
    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

    32,027,518.00
    9Sole Dispositive Power

    0.00
    10Shared Dispositive Power

    32,027,518.00
    11Aggregate amount beneficially owned by each reporting person

    32,027,518.00
    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)

    18.85 %
    14Type of Reporting Person (See Instructions)

    OO



    SCHEDULE 13D

    CUSIP No.
    49845K101


    1 Name of reporting person

    Shopify 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

    CANADA (FEDERAL LEVEL)
    Number of Shares Beneficially Owned by Each Reporting Person With:
    7Sole Voting Power

    0.00
    8Shared Voting Power

    32,027,518.00
    9Sole Dispositive Power

    0.00
    10Shared Dispositive Power

    32,027,518.00
    11Aggregate amount beneficially owned by each reporting person

    32,027,518.00
    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)

    18.85 %
    14Type of Reporting Person (See Instructions)

    CO



    SCHEDULE 13D

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

    Series A Common Stock
    (b)Name of Issuer:

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

    125 Summer Street, 6th Floor, Boston, MASSACHUSETTS , 02110.
    Item 1 Comment:
    Explanatory Note This Amendment No. 3 (the "Amendment No. 3") to the Schedule 13D filed on December 11, 2023, as amended by Amendment No. 1 filed on July 30, 2024 and Amendment No. 2 filed on February 21, 2025 (as amended, the "Schedule 13D"), is being filed to report changes in the beneficial ownership reported by the Reporting Persons due to (i) the vesting of 344,382, 344,383 and 344,381 Warrants on April 28, July 28 and October 28, 2025, respectively, and (ii) changes in the total number of Series A Common Stock outstanding since the filing of Amendment No. 2 to the Schedule 13D. All items not described herein remain as previously reported in the Schedule 13D, and all capitalized terms used herein and not otherwise defined herein shall have the meanings ascribed to them in the Schedule 13D.
    Item 2.Identity and Background
    (a)
    Item 2 of the Schedule 13D is hereby amended by incorporating herein by reference the information set forth on the updated Annex A attached hereto.
    Item 3.Source and Amount of Funds or Other Consideration
     
    Item 3 of the Schedule 13D is hereby amended by adding the text below to the end of Item 3 of the Schedule 13D: On April 28, July 28 and October 28, 2025, 344,382, 344,383 and 344,381 of the Warrants held by SSH 3, respectively, vested and became exercisable for an equal number of shares of Series B Common Stock. SSH 3 exercised these Warrants on April 28, July 28 and November 14, 2025, respectively.
    Item 5.Interest in Securities of the Issuer
    (a)
    Item 5 is hereby amended and restated in its entirety as follows: As of the date hereof, SSH 3 and Shopify Inc. beneficially own 32,027,518 shares of Series A Common Stock, representing approximately beneficial ownership of 18.85% of the outstanding Series A Common Stock, consisting of: (i) 16,284,344 shares of Series B Common Stock held directly by SSH 3 and (ii) the Investment Option held by SSH 3, which is exercisable for an additional 15,743,174 Series B Common Stock. Each share of Series B Common Stock is convertible into one share of Series A Common Stock at any time at the option of the holder thereof. Calculations of the percentage of the shares of Series A Common Stock beneficially owned by the Reporting Persons is based on (i) 137,856,147 shares of Series A Common Stock outstanding as of October 31, 2025, based on information set forth in the Form 10-Q filed by the Issuer with the Securities and Exchange Commission on November 5, 2025, (ii) 16,284,344 shares of Series A Common Stock issuable upon the conversion of Series B Common Stock held directly by SSH 3, where each share of Series B Common Stock is convertible into one share of Series A Common Stock, and (iii) the Investment Option held by SSH 3 to purchase 15,743,174 shares of Series B Common Stock, where each share of Series B Common Stock is convertible into one share of Series A Common Stock.
    (b)
    The number of shares as to which each Reporting Person has sole power to vote or to direct the vote, shared power to vote or to direct the vote, sole power to dispose or to direct the disposition, or shared power to dispose or to direct the disposition is set forth on rows 7 through 11 of the cover pages of this Amendment No. 3 and is incorporated herein by reference.
    (c)
    Except as set forth in this Schedule 13D, no transaction in Series A Common Stock has been effected by any of the Reporting Persons within the past 60 days.
    (d)
    To the best knowledge of the Reporting Persons, no one other than the Reporting Persons, or the partners, members, affiliates or shareholders of the Reporting Persons, has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Series A Common Stock reported herein as beneficially owned by the Reporting Persons.
    (e)
    Not applicable.
    Item 7.Material to be Filed as Exhibits.
     
    Annex A - Executive Officers and Directors of Shopify Inc.

        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.

     
    Shopify Strategic Holdings 3 LLC
     
    Signature:/s/ Jason Kilpela
    Name/Title:Jason Kilpela, Director
    Date:11/14/2025
     
    Shopify Inc.
     
    Signature:/s/ Michael L. Johnson
    Name/Title:Michael L. Johnson, Secretary
    Date:11/14/2025
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