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    Amendment: SEC Form SC 13G/A filed by A10 Networks Inc.

    11/8/24 4:38:55 PM ET
    $ATEN
    Computer Communications Equipment
    Telecommunications
    Get the next $ATEN alert in real time by email
    SC 13G/A 1 d827479dsc13ga.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. 6)*

     

     

    A10 Networks, Inc.

    (Name of Issuer)

    Common Stock, par value $0.00001 per share

    (Title of Class of Securities)

    002121101

    (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, 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

     

     606,263

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     606,263

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     606,263

    10.  

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

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     0.01%(1)

    12.  

     Type of Reporting Person (See Instructions)

     

     PN

     

    (1)

    Calculated based on 73,866,109 shares of common stock, par value $0.00001 per share (“Common Stock”) outstanding as of July 26, 2024, as reported on the Issuer’s Form 10-Q filed on July 30, 2024.


     1.   

     Names of Reporting Persons

     

     Summit Partners GE VIII, 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

     

     606,263

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     606,263

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     606,263

    10.  

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

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     0.01%(1)

    12.  

     Type of Reporting Person (See Instructions)

     

     OO

     

    (1)

    Calculated based on 73,866,109 shares of Common Stock outstanding as of July 26, 2024, as reported on the Issuer’s Form 10-Q filed on July 30, 2024.


     1.   

     Names of Reporting Persons

     

     Summit Partners GE VIII, 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

     

     606,263

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     606,263

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     606,263

    10.  

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

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     0.01%(1)

    12.  

     Type of Reporting Person (See Instructions)

     

     PN

     

    (1)

    Calculated based on 73,866,109 shares of Common Stock outstanding as of July 26, 2024, as reported on the Issuer’s Form 10-Q filed on July 30, 2024.


     1.   

     Names of Reporting Persons

     

     Summit Partners Growth Equity Fund VIII-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

     

     606,263

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     606,263

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     606,263

    10.  

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

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     0.01%(1)

    12.  

     Type of Reporting Person (See Instructions)

     

     PN

     

    (1)

    Calculated based on 73,866,109 shares of Common Stock outstanding as of July 26, 2024, as reported on the Issuer’s Form 10-Q filed on July 30, 2024.


     1.   

     Names of Reporting Persons

     

     Summit Partners Growth Equity Fund VIII-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

     

     606,263

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     606,263

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     606,263

    10.  

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

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     0.01%(1)

    12.  

     Type of Reporting Person (See Instructions)

     

     PN

     

    (1)

    Calculated based on 73,866,109 shares of Common Stock outstanding as of July 26, 2024, as reported on the Issuer’s Form 10-Q filed on July 30, 2024.


     1.   

     Names of Reporting Persons

     

     Summit Master Company, 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

     

     606,263

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     606,263

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     606,263

    10.  

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

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     0.01%(1)

    12.  

     Type of Reporting Person (See Instructions)

     

     OO

     

    (1)

    Calculated based on 73,866,109 shares of Common Stock outstanding as of July 26, 2024, as reported on the Issuer’s Form 10-Q filed on July 30, 2024.


     1.   

     Names of Reporting Persons

     

     Summit Investors Management, 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

     

     606,263

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     606,263

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     606,263

    10.  

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

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     0.01%(1)

    12.  

     Type of Reporting Person (See Instructions)

     

     OO

     

    (1)

    Calculated based on 73,866,109 shares of Common Stock outstanding as of July 26, 2024, as reported on the Issuer’s Form 10-Q filed on July 30, 2024.


     1.   

     Names of Reporting Persons

     

     Summit Investors I, 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

     

     606,263

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     606,263

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     606,263

    10.  

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

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     0.01%(1)

    12.  

     Type of Reporting Person (See Instructions)

     

     OO

     

    (1)

    Calculated based on 73,866,109 shares of Common Stock outstanding as of July 26, 2024, as reported on the Issuer’s Form 10-Q filed on July 30, 2024.


     1.   

     Names of Reporting Persons

     

     Summit Investors I (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

     

     606,263

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     606,263

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     606,263

    10.  

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

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     0.01%(1)

    12.  

     Type of Reporting Person (See Instructions)

     

     PN

     

    (1)

    Calculated based on 73,866,109 shares of Common Stock outstanding as of July 26, 2024, as reported on the Issuer’s Form 10-Q filed on July 30, 2024.


     1.   

     Names of Reporting Persons

     

     Scott C. Collins

     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

     

     United States of America

    Number of

    Shares  Beneficially 

    Owned By

    Each

    Reporting

    Person

    With

       5.   

     Sole Voting Power

     

     0

       6.  

     Shared Voting Power

     

     606,263

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     606,263

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     606,263

    10.  

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

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     0.01%(1)

    12.  

     Type of Reporting Person (See Instructions)

     

     IN

     

    (1)

    Calculated based on 73,866,109 shares of Common Stock outstanding as of July 26, 2024, as reported on the Issuer’s Form 10-Q filed on July 30, 2024.


     1.   

     Names of Reporting Persons

     

     Peter Y. Chung

     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

     

     United States of America

    Number of

    Shares  Beneficially 

    Owned By

    Each

    Reporting

    Person

    With

       5.   

     Sole Voting Power

     

     0

       6.  

     Shared Voting Power

     

     606,263

       7.  

     Sole Dispositive Power

     

     0

       8.  

     Shared Dispositive Power

     

     606,263

     9.   

     Aggregate Amount Beneficially Owned by Each Reporting Person

     

     606,263

    10.  

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

     

     ☐

    11.  

     Percent of Class Represented By Amount in Row (9)

     

     0.01%(1)

    12.  

     Type of Reporting Person (See Instructions)

     

     IN

     

    (1)

    Calculated based on 73,866,109 shares of Common Stock outstanding as of July 26, 2024, as reported on the Issuer’s Form 10-Q filed on July 30, 2024.


    Item 1(a).

    Name of Issuer

    A10 Networks, Inc. (the “Issuer”)

     

    Item 1(b).

    Address of the Issuer’s Principal Executive Offices

    2300 Orchard Parkway

    San Jose, CA 95131

     

    Item 2(a).

    Names of Persons Filing

    This Schedule 13G is being filed by Summit Partners, L.P., Summit Partners GE VIII, LLC, Summit Partners GE VIII, L.P., Summit Partners Growth Equity Fund VIII-A, L.P., Summit Partners Growth Equity Fund VIII-B, L.P., Summit Master Company, LLC, Summit Investors Management, LLC, Summit Investors I, LLC, Summit Investors I (UK), L.P. (individually, an “Entity” and collectively, the “Entities”), Scott C. Collins and Peter Y. Chung (each of the foregoing Entities or individuals, a “Reporting Person”).

    Summit Master Company, LLC is the (i) general partner of Summit Partners, L.P., which is the managing member of Summit Partners GE VIII, LLC, which is the general partner of Summit Partners GE VIII, L.P., which is the general partner of Summit Partners Growth Equity Fund VIII-A, L.P. and Summit Partners Growth Equity Fund VIII-B, L.P. and (ii) managing member of Summit Investors Management, LLC, which is the manager of Summit Investors I, LLC and the general partner of Summit Investors I (UK), L.P. Summit Master Company, LLC, as general partner of Summit Partners, L.P. and the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its investment committee responsible for voting and investment decisions with respect to A10 Networks, Inc. Summit Partners, L.P., through a two-person investment committee responsible for voting and investment decisions with respect to A10 Networks, Inc., currently composed of Scott C. Collins and Peter Y. Chung, has voting and dispositive authority over the shares held by the reporting persons, as applicable.

     

    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

    Common Stock, par value $0.00001 per share

     

    Item 2(e).

    CUSIP Number

    002121101

     

    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.

    Of the 606,263 reported securities, (i) Summit Partners Growth Equity Fund VIII-A, L.P. directly holds 314,791 shares of Common Stock, (ii) Summit Partners Growth Equity Fund VIII-B, L.P. directly holds 115,005 shares of Common Stock, (iii) Summit Investors I, LLC directly holds 1,840 shares of Common Stock, (iv) Summit Investors I (UK), L.P. directly holds 163 shares of Common Stock and (v) 174,464 shares of Common Stock in the name of Peter Y. Chung are held for the benefit of Summit Partners, L.P.

    By virtue of the affiliate relationship among the Entities and by virtue of Mr. Collins’ and Mr. Chung’s membership on the two-person investment committee of Summit Partners, L.P., each of the Reporting Persons may be deemed to beneficially own all of the 606,263 shares of Common Stock as of September 30, 2024. Each of the Reporting Persons expressly disclaims beneficial ownership of any shares of the Issuer, except with respect to shares held of record by such Reporting Person, as provided above.

    The filing of this Statement shall not be construed as an admission that any Reporting Person is, for the purpose of Section 13(d) or 13(g) of the Exchange Act, the beneficial owner of any securities covered by this Statement.

     

    Item 5.

    Ownership of Five Percent or Less of a Class

    If this statement is being filed to report the fact that as of the date hereof the Reporting Persons have ceased to be the beneficial owner of more than five percent of the class of securities, check the following: ☒

     

    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, L.P.
    By: Summit Master Company, LLC, its general partner
    By:   /s/ Adam H. Hennessey, as POA
    Adam H. Hennessey, as Power of Attorney
    SUMMIT PARTNERS GE VIII, LLC
    By: Summit Partners, L.P., its managing member
    By: Summit Master Company, LLC, its general partner
    By:   /s/ Adam H. Hennessey, as POA
    Adam H. Hennessey, as Power of Attorney
    SUMMIT PARTNERS GE VIII, L.P.
    By: Summit Partners GE VIII, LLC, its general partner
    By: Summit Partners, L.P., its managing member
    By: Summit Master Company, LLC, its general partner
    By:   /s/ Adam H. Hennessey, as POA
    Adam H. Hennessey, as Power of Attorney
    SUMMIT PARTNERS GROWTH EQUITY FUND VIII-A, L.P.
    By: Summit Partners GE VIII, L.P., its general partners
    By: Summit Partners GE VIII, LLC, its general partner
    By: Summit Partners, L.P., its managing member
    By: Summit Master Company, LLC, its general partner
    By:   /s/ Adam H. Hennessey, as Power of Attorney
    Adam H. Hennessey, as Power of Attorney


    SUMMIT PARTNERS GROWTH EQUITY FUND VIII-B, L.P.
    By: Summit Partners GE VIII, L.P., its general partner
    By: Summit Partners GE VIII, LLC, its general partner
    By: Summit Partners, L.P., its managing member
    By: Summit Master Company, LLC, its general partner
    By:   /s/ Adam H. Hennessey, as Power of Attorney
    Adam H. Hennessey, as Power of Attorney
    SUMMIT MASTER COMPANY, LLC
    By:   /s/ Adam H. Hennessey, as Power of Attorney
    Adam H. Hennessey, as Power of Attorney
    SUMMIT INVESTORS MANAGEMENT, LLC
    By: Summit Partners, L.P., its managing member
    By: Summit Master Company, LLC, its general partner
    By:   /s/ Adam H. Hennessey, as Power of Attorney
    Adam H. Hennessey, as Power of Attorney
    SUMMIT INVESTORS I, LLC
    By: Summit Investors Management, LLC, its manager
    By: Summit Master Company, LLC, its managing member
    By:   /s/ Adam H. Hennessey, as Power of Attorney
    Adam H. Hennessey, as Power of Attorney
    SUMMIT INVESTORS I (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 Power of Attorney
    Adam H. Hennessey, as Power of Attorney


    By:   /s/ Adam H. Hennessey, as Power of Attorney
    Peter Y. Chung
    By:   /s/ Adam H. Hennessey, as Power of Attorney
    Scott C. Collins


    EXHIBIT LIST

     

    Exhibit A    Joint Filing Agreement, dated as of November 8, 2024, by and among Summit Partners, L.P., Summit Partners GE VIII, LLC, Summit Partners GE VIII, L.P., Summit Partners Growth Equity Fund VIII-A, L.P., Summit Partners Growth Equity Fund VIII-B, L.P., Summit Master Company, LLC, Summit Investors Management, LLC, Summit Investors I, LLC, Summit Investors I (UK), L.P., Scott C. Collins and Peter Y. Chung.
    Exhibit B    Powers of Attorney, dated as of December 13, 2021 (incorporated by reference to Exhibit A to that certain Schedule 13G/A filed on February 4, 2022, by the Reporting Persons with the Securities and Exchange Commission).
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