Summit Partners Growth Equity Fund VIII-B Form 4 A10 Networks / PARTNERS L P SUMMIT ownership change

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

SUMMIT PARTNERS L P

(Last)

(First)

(Middle)

222 BERKELEY STREET

18TH FLOOR

(Street)

BOSTON

02116

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
A10 Networks, Inc. [ ATEN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

Director	X	10% Owner
Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
06/24/2022

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	06/24/2022		A		10,316⁽¹⁾	A	$0	8,888,206⁽²⁾	I	See Remarks⁽³⁾

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

1. Name and Address of Reporting Person^*

SUMMIT PARTNERS L P

(Last)

(First)

(Middle)

222 BERKELEY STREET

18TH FLOOR

(Street)

BOSTON

02116

(City)

(State)

(Zip)

1. Name and Address of Reporting Person^*

SUMMIT PARTNERS GE VIII, L.P.

(Last)

(First)

(Middle)

222 BERKELEY STREET, 18TH FLOOR

(Street)

BOSTON

02116

(City)

(State)

(Zip)

1. Name and Address of Reporting Person^*

Summit Partners GE VIII, LLC

(Last)

(First)

(Middle)

222 BERKELEY STREET, 18TH FLOOR

(Street)

BOSTON

02116

(City)

(State)

(Zip)

1. Name and Address of Reporting Person^*

Summit Investors Management, LLC

(Last)

(First)

(Middle)

222 BERKELEY STREET, 18TH FLOOR

(Street)

BOSTON

02116

(City)

(State)

(Zip)

1. Name and Address of Reporting Person^*

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

(Last)

(First)

(Middle)

222 BERKELEY STREET, 18TH FLOOR

(Street)

BOSTON

02116

(City)

(State)

(Zip)

1. Name and Address of Reporting Person^*

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

(Last)

(First)

(Middle)

222 BERKELEY STREET, 18TH FLOOR

(Street)

BOSTON

02116

(City)

(State)

(Zip)

1. Name and Address of Reporting Person^*

Summit Investors I, LLC

(Last)

(First)

(Middle)

222 BERKELEY STREET, 18TH FLOOR

(Street)

BOSTON

02116

(City)

(State)

(Zip)

1. Name and Address of Reporting Person^*

Summit Investors I (UK), L.P.

(Last)

(First)

(Middle)

222 BERKELEY STREET, 18TH FLOOR

(Street)

BOSTON

02116

(City)

(State)

(Zip)

1. Name and Address of Reporting Person^*

SUMMIT MASTER COMPANY, LLC

(Last)

(First)

(Middle)

222 BERKELEY STREET, 18TH FLOOR

(Street)

BOSTON

02116

(City)

(State)

(Zip)

1. Name and Address of Reporting Person^*

MANNION MARTIN J

(Last)

(First)

(Middle)

C/O SUMMIT PARTNERS

222 BERKELEY STREET, 18TH FLOOR

(Street)

BOSTON

02116

(City)

(State)

(Zip)

Explanation of Responses:

1. Represents restricted stock units granted to Mr. Chung as part of the director compensation program. The restricted stock units will vest on June 24, 2023, and will settle solely by delivery of an equal number of shares of Common Stock provided that Mr. Chung remains in continuous service with the Issuer through the vesting date.

2. The Common Stock is held as follows: 6,362,818 shares in the name of Summit Partners Growth Equity Fund VIII-A, L.P.; 2,324,553 shares in the name of Summit Partners Growth Equity Fund VIII-B, L.P.; 37,202 shares in the name of Summit Investors I, LLC; 3,273 shares in the name of Summit Investors I (UK), L.P.; 160,360 shares and restricted stock units in the name of Mr. Chung, which are held for the benefit of Summit Partners, L.P.

3. Summit Partners, L.P. 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 each of Summit Partners Growth Equity Fund VIII-A, L.P. and Summit Partners Growth Equity Fund VIII-B, L.P. Summit Master Company, LLC is the 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 Partners GE VIII, LLC, as the general partner of Summit Partners GE VIII, L.P., and Summit Master Company, LLC, as the managing member of Summit Investors Management, LLC has each 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 the Company. Summit Partners, L.P., through a two-person Investment Committee, responsible for voting and investment decisions with respect to the Issuer, currently composed of Martin J. Mannion and Peter Y. Chung, has voting and dispositive authority over the shares and restricted stock units reported herein and therefore may be deemed to beneficially own such shares. Each of the Summit entities, Mr. Mannion and Mr. Chung each disclaim beneficial ownership of the shares of common stock and the restricted stock units, except to the extent of their respective pecuniary interest therein.

	Summit Partners Growth Equity Fund VIII-B, L.P. By: /s/ Summit Partners Growth Equity Fund VIII-B, L.P., by Summit Partners GE VIII, L.P., its GP, by Summit Partners GE VIII, LLC, its GP, by Adam H. Hennessey, Member	06/28/2022
	Summit Master Company, LLC By: /s/ Summit Master Company, LLC, by Adam H. Hennessey, Member	06/28/2022
	Summit Investors Management, LLC By: /s/ Summit Investors Management, LLC, by Summit Master Company, LLC, its Managing Member, by Adam H. Hennessey, Member	06/28/2022
	Summit Investors I, LLC By: /s/ Summit Investors I, LLC, by Summit Investors Management, LLC, its Manager, by Summit Master Company, LLC, its Managing Member, by Adam H. Hennessey, Member	06/28/2022
	Summit Investors I (UK), L.P. By: /s/ Summit Investors I (UK), L.P., by Summit Investors Management, LLC, its General Partner, by Summit Master Company, LLC, its Managing Member, by Adam H. Hennessey, Member	06/28/2022
	Summit Partners Growth Equity Fund VIII-A, L.P. By: /s/ Summit Partners Growth Equity Fund VIII-A, L.P., by Summit Partners GE VIII, L.P., its GP, by Summit Partners GE VIII, LLC, by Adam H. Hennessey, Member	06/28/2022
	Summit Partners, L.P. By: /s/ Summit Partners, L.P., by Summit Master Company, LLC, its GP, by Adam H. Hennessey, Member	06/28/2022
	Summit Partners GE VIII, LLC By: /s/ Summit Partners GE VIII, LLC, by Summit Partners, L.P., its Manager, by Summit Master Company, LLC, its General Partner, by Adam H. Hennessey, Member	06/28/2022
	Summit Partners GE VIII, L.P. By: /s/ Summit Partners GE VIII, L.P., by Summit Partners GE VIII, LLC, its General Partner, by Summit Partners, L.P., its Manager, by Summit Master Company, LLC, its General Partner, by Adam H. Hennessey, Member	06/28/2022
	Martin J. Mannion By: /s/ Adam H. Hennessey, POA for Martin J. Mannion	06/28/2022
	** Signature of Reporting Person	Date
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Summit Partners Growth Equity Fund VIII-B Form 4A10 Networks / PARTNERS L P SUMMIT ownership change