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    Amendment: SEC Form SC 13G/A filed by Klaviyo Inc.

    11/8/24 4:35:28 PM ET
    $KVYO
    Computer Software: Prepackaged Software
    Technology
    Get the next $KVYO alert in real time by email
    SC 13G/A 1 d846079dsc13ga.htm SC 13G/A SC 13G/A

     

     

    UNITED STATES

    SECURITIES AND EXCHANGE COMMISSION

    WASHINGTON, D.C. 20549

     

     

    SCHEDULE 13G

    UNDER THE SECURITIES EXCHANGE ACT OF 1934

    (Amendment No. 1)*

     

     

    Klaviyo, Inc.

    (Name of Issuer)

    Series A Common Stock, par value $0.001 per share

    (Title of Class of Securities)

    49845K101

    (CUSIP Number)

    September 30, 2024

    (Date of Event Which Requires Filing of this Statement)

     

     

    Check the Appropriate Box to Designate the Rule Pursuant to Which this Schedule Is Filed:

    ☐ Rule 13d-1(b)

    ☐ Rule 13d-1(c)

    ☒ Rule 13d-1(d)

     

    *

    The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

    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).

     

     

     


     1.   

     Names of Reporting Persons

     

     Summit Partners Growth Equity Fund IX-A, L.P.

     2.  

     Check The Appropriate Box if a Member of a Group (See Instructions)

     (a) ☐  (b) ☒

     

     3.  

     SEC Use Only

     

     4.  

     Citizenship or Place of Organization

     

     Delaware

    Number of

    Shares  Beneficially 

    Owned By

    Each

    Reporting

    Person

    With

       5.   

     Sole Voting Power

     

     0

       6.  

     Shared Voting Power

     

     27,439,856(1)

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     27,439,856(1)

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     27,439,856(1)

    10.  

     Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     23.05%(2)

    12.  

     Type of Reporting Person (See Instructions)

     

     PN

     

    (1)

    Represents 27,439,856 shares of Series A Common Stock (“Series A Shares”) issuable in respect of 27,439,856 shares of Series B Common Stock (“Series B Shares”).

    (2)

    Calculated based upon 72,592,767 Series A Shares outstanding as of July 31, 2024, as reported on the Issuer’s Form 10-Q filed with the Securities and Exchange Commission on August 7, 2024, as increased by an aggregate of 46,427,778 Series A Shares issuable in respect of the 46,427,778 Series B Shares held by the Summit Holders (as defined in Item 2).


     1.   

     Names of Reporting Persons

     

     Summit Partners Growth Equity Fund IX-B, L.P.

     2.  

     Check The Appropriate Box if a Member of a Group (See Instructions)

     (a) ☐  (b) ☒

     

     3.  

     SEC Use Only

     

     4.  

     Citizenship or Place of Organization

     

     Delaware

    Number of

    Shares  Beneficially 

    Owned By

    Each

    Reporting

    Person

    With

       5.   

     Sole Voting Power

     

     0

       6.  

     Shared Voting Power

     

     17,133,061(1)

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     17,133,061(1)

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     17,133,061(1)

    10.  

     Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     14.40%(2)

    12.  

     Type of Reporting Person (See Instructions)

     

     PN

     

    (1)

    Represents 17,133,061 Series A Shares issuable in respect of 17,133,061 Series B Shares.

    (2)

    Calculated based upon 72,592,767 Series A Shares outstanding as of July 31, 2024, as reported on the Issuer’s Form 10-Q filed with the Securities and Exchange Commission on August 7, 2024, as increased by an aggregate of 46,427,778 Series A Shares issuable in respect of the 46,427,778 Series B Shares held by the Summit Holders (as defined in Item 2).


     1.   

     Names of Reporting Persons

     

     Summit Partners Co-Invest (Kiwi), L.P.

     2.  

     Check The Appropriate Box if a Member of a Group (See Instructions)

     (a) ☐  (b) ☒

     

     3.  

     SEC Use Only

     

     4.  

     Citizenship or Place of Organization

     

     Delaware

    Number of

    Shares  Beneficially 

    Owned By

    Each

    Reporting

    Person

    With

       5.   

     Sole Voting Power

     

     0

       6.  

     Shared Voting Power

     

     1,691,926(1)

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     1,691,926(1)

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     1,691,926(1)

    10.  

     Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     1.42%(2)

    12.  

     Type of Reporting Person (See Instructions)

     

     PN

     

    (1)

    Represents 1,691,926 Series A Shares issuable in respect of 1,691,926 Series B Shares.

    (2)

    Calculated based upon 72,592,767 Series A Shares outstanding as of July 31, 2024, as reported on the Issuer’s Form 10-Q filed with the Securities and Exchange Commission on August 7, 2024, as increased by an aggregate of 46,427,778 Series A Shares issuable in respect of the 46,427,778 Series B Shares held by the Summit Holders (as defined in Item 2).


     1.   

     Names of Reporting Persons

     

     Summit Investors GE IX/VC IV, LLC

     2.  

     Check The Appropriate Box if a Member of a Group (See Instructions)

     (a) ☐  (b) ☒

     

     3.  

     SEC Use Only

     

     4.  

     Citizenship or Place of Organization

     

     Delaware

    Number of

    Shares  Beneficially 

    Owned By

    Each

    Reporting

    Person

    With

       5.   

     Sole Voting Power

     

     0

       6.  

     Shared Voting Power

     

     144,217(1)

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     144,217(1)

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     144,217(1)

    10.  

     Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     0.12%(2)

    12.  

     Type of Reporting Person (See Instructions)

     

     OO

     

    (1)

    Represents 144,217 Series A Shares issuable in respect of 144,217 Series B Shares.

    (2)

    Calculated based upon 72,592,767 Series A Shares outstanding as of July 31, 2024, as reported on the Issuer’s Form 10-Q filed with the Securities and Exchange Commission on August 7, 2024, as increased by an aggregate of 46,427,778 Series A Shares issuable in respect of the 46,427,778 Series B Shares held by the Summit Holders (as defined in Item 2).


     1.   

     Names of Reporting Persons

     

     Summit Investors GE IX/VC IV (UK), L.P.

     2.  

     Check The Appropriate Box if a Member of a Group (See Instructions)

     (a) ☐  (b) ☒

     

     3.  

     SEC Use Only

     

     4.  

     Citizenship or Place of Organization

     

     Cayman Islands

    Number of

    Shares  Beneficially 

    Owned By

    Each

    Reporting

    Person

    With

       5.   

     Sole Voting Power

     

     0

       6.  

     Shared Voting Power

     

     18,718(1)

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     18,718(1)

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     18,718(1)

    10.  

     Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     0.02%(2)

    12.  

     Type of Reporting Person (See Instructions)

     

     PN

     

    (1)

    Represents 18,718 Series A Shares issuable in respect of 18,718 Series B Shares.

    (2)

    Calculated based upon 72,592,767 Series A Shares outstanding as of July 31, 2024, as reported on the Issuer’s Form 10-Q filed with the Securities and Exchange Commission on August 7, 2024, as increased by an aggregate of 46,427,778 Series A Shares issuable in respect of the 46,427,778 Series B Shares held by the Summit Holders (as defined in Item 2).


     1.   

     Names of Reporting Persons

     

     Summit Partners, L.P.

     2.  

     Check The Appropriate Box if a Member of a Group (See Instructions)

     (a) ☐  (b) ☒

     

     3.  

     SEC Use Only

     

     4.  

     Citizenship or Place of Organization

     

     Delaware

    Number of

    Shares  Beneficially 

    Owned By

    Each

    Reporting

    Person

    With

       5.   

     Sole Voting Power

     

     0

       6.  

     Shared Voting Power

     

     46,427,778(1)

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     46,427,778(1)

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     46,427,778(1)

    10.  

     Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     39.01%(2)

    12.  

     Type of Reporting Person (See Instructions)

     

     PN

     

    (1)

    Represents 46,427,778 Series A Shares issuable in respect of 46,427,778 Series B Shares.

    (2)

    Calculated based upon 72,592,767 Series A Shares outstanding as of July 31, 2024, as reported on the Issuer’s Form 10-Q filed with the Securities and Exchange Commission on August 7, 2024, as increased by an aggregate of 46,427,778 Series A Shares issuable in respect of the 46,427,778 Series B Shares held by the Summit Holders (as defined in Item 2).


    Item 1(a).

    Name of Issuer

    Klaviyo, Inc. (the “Issuer”)

     

    Item 1(b).

    Address of the Issuer’s Principal Executive Offices

    125 Summer Street, Floor 6

    Boston, MA 02110

     

    Item 2(a).

    Names of Persons Filing

    This statement is filed by the entities and persons listed below, all of whom together are referred to herein as the “Reporting Persons”:

     

      (i)

    Summit Partners Growth Equity Fund IX-A, L.P. (“Fund IX-A”)

     

      (ii)

    Summit Partners Growth Equity Fund IX-B, L.P. (“Fund IX-B”)

     

      (iii)

    Summit Partners Co-Invest (Kiwi), L.P. (“Kiwi Co-Invest Fund”)

     

      (iv)

    Summit Investors GE IX/VC IV, LLC (“Fund IX/VC IV”)

     

      (v)

    Summit Investors GE IX/VC IV (UK), L.P. (“Fund IX/VC IV (UK),” and together with each of the foregoing, the “Summit Holders”)

     

      (vi)

    Summit Partners, L.P.

     

    Item 2(b).

    Address of the Principal Business Office, or if none, Residence

    222 Berkeley Street, 18th Floor

    Boston, MA 02116

     

    Item 2(c).

    Citizenship

    See responses to Item 4 on each cover page.

     

    Item 2(d).

    Title of Class of Securities

    Series A common stock, par value $0.001 per share

     

    Item 2(e).

    CUSIP Number

    49845K101

     

    Item 3.

    If this statement is filed pursuant to Rules 13d-1(b), or 13d-2(b) or (c), check whether the person filing is a (n):

    Not Applicable

     

    Item 4.

    Ownership

     

      (a)

    Amount beneficially owned:

    See responses to Item 9 on each cover page.

     

      (b)

    Percent of Class:

    See responses to Item 11 on each cover page.

     

      (c)

    Number of shares as to which the Reporting Person has:

     

      (i)

    Sole power to vote or to direct the vote:

    See responses to Item 5 on each cover page.

     

      (ii)

    Shared power to vote or to direct the vote:

    See responses to Item 6 on each cover page.


      (iii)

    Sole power to dispose or to direct the disposition of:

    See responses to Item 7 on each cover page.

     

      (iv)

    Shared power to dispose or to direct the disposition of:

    See responses to Item 8 on each cover page.

    The reported securities are held by Fund IX-A (27,439,856 Series A Shares issuable in respect of 27,439,856 Series B Shares), Fund IX-B (17,133,061 Series A Shares issuable in respect of 17,133,061 Series B Shares), Kiwi Co-Invest Fund (1,691,926 Series A Shares issuable in respect of 1,691,926 Series B Shares), Fund IX/VC IV (144,217 Series A Shares issuable in respect of 144,217 Series B Shares), and Fund IX/VC IV (UK) (18,718 Series A Shares issuable in respect of 18,718 Series B Shares). Summit Partners, L.P. is the manager of Summit Partners GE IX, LLC, which is the general partner of Summit Partners GE IX, LP, which is the general partner of Fund IX-A and Fund IX-B. Summit Partners, L.P. is the managing member of Summit Partners Co-Invest Kiwi GP, LLC, which is the general partner of Kiwi Co-Invest Fund. Summit Master Company, LLC is the general partner of Summit Partners, L.P., which is the manager of Summit Investors Management, LLC, which is the manager of Fund IX/VC IV and the general partner of Fund IX/VC IV (UK). Summit Master Company, LLC, as the managing member of Summit Investors Management, LLC, has delegated voting and investment decisions with respect to the Series B Shares held by Fund IX/VC IV and Fund IX/VC IV (UK) to Summit Partners, L.P.

    The investment committee of Summit Partners, L.P., is currently composed of Peter Chung, Scott Collins and Len Peter Rottier, who may be deemed to have voting and dispositive authority over, and therefore beneficial ownership of, the reported securities. Each of the foregoing entities, Mr. Chung, Mr. Collins, and Mr. Rottier disclaims beneficial ownership of the reported securities (except to the extent such securities are directly held by such entity). The filing of this statement shall not be construed as an admission that the Reporting Persons or any of the foregoing are the beneficial owners of any of the securities covered by this statement.

     

    Item 5.

    Ownership of Five Percent or Less of a Class

    Not Applicable.

     

    Item 6.

    Ownership of More than Five Percent on Behalf of Another Person

    Not Applicable.

     

    Item 7

    Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company

    Not Applicable.

     

    Item 8.

    Identification and Classification of Members of the Group

    Not Applicable.

     

    Item 9.

    Notice of Dissolution of Group

    Not Applicable

     

    Item 10.

    Certification

    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.

    Dated: November 8, 2024

     

    SUMMIT PARTNERS GROWTH EQUITY FUND IX-A, L.P.
    By: Summit Partners GE IX, L.P.
    Its: General Partner
    By: Summit Partners GE IX, LLC
    Its: General Partner
    By:   /s/ Adam H. Hennessey, as POA
    Adam H. Hennessey, as Power of Attorney
    SUMMIT PARTNERS GROWTH EQUITY FUND IX-B, L.P.
    By: Summit Partners GE IX, L.P.
    Its: General Partner
    By: Summit Partners GE IX, LLC
    Its: General Partner
    By:   /s/ Adam H. Hennessey, as POA
    Adam H. Hennessey, as Power of Attorney
    SUMMIT PARTNERS CO-INVEST (KIWI), L.P.
    By: Summit Partners Co-invest Kiwi GP, LLC
    Its: General Partner
    By:   /s/ Adam H. Hennessey, as POA
    Adam H. Hennessey, as Power of Attorney
    SUMMIT INVESTORS GE IX/VC IV, LLC
    By: Summit Investors Management, LLC
    Its: Manager
    By: Summit Master Company, LLC
    Its: Managing Member
    By:   /s/ Adam H. Hennessey, as POA
    Adam H. Hennessey, as Power of Attorney


    SUMMIT INVESTORS GE IX/VC IV (UK), L.P.
    By: Summit Investors Management, LLC
    Its: General Partner
    By: Summit Master Company, LLC
    Its: Managing Member
    By:   /s/ Adam H. Hennessey, as POA
    Adam H. Hennessey, as Power of Attorney
    SUMMIT PARTNERS, L.P.
    By: Summit Master Company, LLC
    Its: General Partner
    By:   /s/ Adam H. Hennessey, as POA
    Adam H. Hennessey, as Power of Attorney


    EXHIBIT LIST

     

    Exhibit A    Joint Filing Agreement, dated as of January 31, 2024, incorporated by reference to the Schedule 13G filed by the Reporting Persons on January 31, 2024
    Exhibit B    Powers of Attorney, incorporated herein by reference to of the statement on Schedule 13G filed by the Reporting Persons on January 31, 2024
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    SEC Form 10-Q filed by Klaviyo Inc.

    10-Q - Klaviyo, Inc. (0001835830) (Filer)

    5/5/26 4:13:26 PM ET
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    Co-Chief Executive Officer Bialecki Andrew converted options into 212,529 units of Series A Common Stock and sold $3,105,049 worth of Series A Common Stock (212,529 units at $14.61) as part of a pre-agreed trading plan (SEC Form 4)

    4 - Klaviyo, Inc. (0001835830) (Issuer)

    5/28/26 8:08:04 PM ET
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    Director St. Ledger Susan converted options into 9,334 units of Series A Common Stock and sold $133,196 worth of Series A Common Stock (9,334 units at $14.27) as part of a pre-agreed trading plan (SEC Form 4)

    4 - Klaviyo, Inc. (0001835830) (Issuer)

    5/20/26 8:05:43 PM ET
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    Co-Chief Executive Officer Bialecki Andrew converted options into 200,000 units of Series A Common Stock and sold $2,976,000 worth of Series A Common Stock (200,000 units at $14.88) as part of a pre-agreed trading plan (SEC Form 4)

    4 - Klaviyo, Inc. (0001835830) (Issuer)

    5/20/26 8:03:53 PM ET
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    Large Ownership Changes

    This live feed shows all institutional transactions in real time.

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    Amendment: SEC Form SC 13G/A filed by Klaviyo Inc.

    SC 13G/A - Klaviyo, Inc. (0001835830) (Subject)

    11/14/24 4:05:53 PM ET
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    Amendment: SEC Form SC 13G/A filed by Klaviyo Inc.

    SC 13G/A - Klaviyo, Inc. (0001835830) (Subject)

    11/14/24 2:53:14 PM ET
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    Amendment: SEC Form SC 13G/A filed by Klaviyo Inc.

    SC 13G/A - Klaviyo, Inc. (0001835830) (Subject)

    11/14/24 12:04:48 PM ET
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    Leadership Updates

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    Klaviyo Appoints Chano Fernández as co-CEO, Joining Co-Founder and co-CEO Andrew Bialecki

    Klaviyo (NYSE:KVYO), the B2C CRM, today announced that Chano Fernández has been appointed co-CEO, effective January 1, 2026. Fernández will lead Klaviyo alongside Co-Founder and co-CEO Andrew Bialecki, bringing global enterprise leadership expertise to support the company's next phase of growth. In their respective roles as co-CEOs, Bialecki will now focus fully on driving Klaviyo's AI vision and building AI-first products, while Fernández will lead go-to-market, operations, and general & administrative functions. "We have a saying at Klaviyo: ‘We're 1% done.' With AI unlocking possibilities for B2C businesses that were unimaginable even a year ago, that mindset has never felt more true,"

    12/9/25 9:04:00 AM ET
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    Klaviyo Appoints Carmel Galvin as Chief People Officer

    Former Stripe executive brings over 20 years of experience in strategic HR leadership Klaviyo (NYSE:KVYO), the company that powers smarter digital relationships, today announced that Carmel Galvin will join the company as Chief People Officer, effective April 15. Reporting to Co-founder and CEO, Andrew Bialecki, Galvin will lead Klaviyo's global people operations team and human resources functions, including talent acquisition and retention, training and development, diversity and inclusion, and corporate social responsibility. Galvin joins Klaviyo from Stripe, where she served as Chief People Officer, overseeing the company's talent strategy and programs. She brings over two decades of

    4/11/24 9:00:00 AM ET
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    Financials

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    Klaviyo Delivers Strong Q1 2026 Results: 28% Revenue Growth, Record Operating Margin, and Raises Full Year Outlook

    First quarter revenue of $358.0 million, representing 28% year-over-year growth Raises FY26 revenue guidance to $1.514 billion to $1.522 billion, for year-over-year growth of 23% Klaviyo (NYSE:KVYO), the autonomous B2C CRM, today announced results for its first quarter ended March 31, 2026. "Q1 reflected strong momentum across our business as Klaviyo's autonomous strategy continues to take hold, with 28% revenue growth and our strongest operating margin as a public company," said Andrew Bialecki, co-founder and co-CEO of Klaviyo. "More brands than ever are utilizing more of Klaviyo's platform to drive better results. Delivering meaningful customer experiences at scale requires AI grou

    5/5/26 4:05:00 PM ET
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    Klaviyo Delivers Outstanding 2025 Results: 32% Revenue Growth, Record Fourth Quarter and Raised Fiscal Year 2026 Outlook

    Fourth quarter revenue of $350.2 million, representing 30% year-over-year growth Full year revenue of $1.2 billion, representing 32% year-over-year growth Klaviyo (NYSE:KVYO), the B2C CRM, today announced results for its fourth quarter and fiscal year ended December 31, 2025. "2025 was a breakout year for Klaviyo. More businesses are relying on us as the actionable infrastructure for understanding their consumers and delivering exceptional customer experiences," said Andrew Bialecki, co-founder and co-CEO of Klaviyo. "The future of consumer engagement is autonomous, and brands are choosing Klaviyo because real-time data, personalization and automation together deliver faster execution

    2/10/26 4:05:00 PM ET
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    Klaviyo Delivers Outstanding Third Quarter with 32% Revenue Growth; Raises Full-Year Guidance

    Third quarter revenue of $310.9 million, representing 32% year-over-year growth Raises FY25 revenue guidance to $1.215 billion to $1.219 billion, for year-over-year growth of 30% Klaviyo (NYSE:KVYO), the B2C CRM, today announced results for its third quarter ended September 30, 2025. "We had an outstanding third quarter that reflects the strength of our business and accelerating momentum behind our agentic products," said Andrew Bialecki, Co-founder and CEO of Klaviyo. "We're in a transformative time for how businesses build relationships with consumers. AI is reshaping the quality, speed, and creativity of customer engagement, and Klaviyo is excited to be building the intelligent system

    11/5/25 4:05:00 PM ET
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