Eric Singer - Dec 1, 2021 Form 4 Insider Report for A10 Networks, Inc. (ATEN)

Role: Director
Signature: /s/ Eric Singer
Stock symbol: ATEN
Transactions as of: Dec 1, 2021
Transactions value $: $0
Form type: 4
Date filed: 12/3/2021, 07:18 PM
Previous filing: Nov 10, 2021
Next filing: Dec 15, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ATEN	Common Stock, par value $0.00001	Other	$0	-865K	-82.89%	$0.00	179K	Dec 1, 2021	By Viex Special Opportunities Fund II, LP	F1, F2, F5, F6
holding	ATEN	Common Stock, par value $0.00001						73.1K	Dec 1, 2021	Direct	F1, F2
holding	ATEN	Common Stock, par value $0.00001						646K	Dec 1, 2021	By Viex Opportunities Fund, LP - Series One	F1, F2, F3
holding	ATEN	Common Stock, par value $0.00001						183K	Dec 1, 2021	By Viex Opportunities Fund, LP - Series Two	F1, F2, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	This Form 4 is filed jointly by VIEX Opportunities Fund, LP - Series One ("Series One"), a series of VIEX Opportunities Fund, LP, VIEX Opportunities Fund, LP - Series Two ("Series Two"), a series of VIEX Opportunities Fund, LP, VIEX Special Opportunities Fund II, LP ("VSO II"), VIEX GP, LLC ("VIEX GP"), VIEX Special Opportunities GP II, LLC ("VSO GP II"), VIEX Capital Advisors, LLC ("VIEX Capital"), and Eric Singer (collectively, the "Reporting Persons").
F2	Each Reporting Person disclaims beneficial ownership of the securities of the Issuer reported herein except to the extent of his or its pecuniary interest therein, and this report shall not be deemed to be an admission that any Reporting Person is the beneficial owner of such securities for purposes of Section 16 or any other purpose.
F3	Securities of the Issuer beneficially owned directly by Series One. VIEX GP, as the general partner of Series One, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by Series One. VIEX Capital, as the investment manager of Series One, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by Series One. Mr. Singer, as the managing member of each of VIEX GP and VIEX Capital, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by Series One.
F4	Securities of the Issuer beneficially owned directly by Series Two. VIEX GP, as the general partner of Series Two, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by Series Two. VIEX Capital, as the investment manager of Series Two, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by Series Two. Mr. Singer, as the managing member of each of VIEX GP and VIEX Capital, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by Series Two.
F5	Represents a pro-rata distribution of shares to limited partners by VSO II in connection with the wind-down of the fund.
F6	Securities of the Issuer beneficially owned directly by VSO II. VSO GP II, as the general partner of VSO II, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by VSO II. VIEX Capital, as the investment manager of VSO II, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by VSO II. Mr. Singer, as the managing member of each of VSO GP II and VIEX Capital, may be deemed the beneficial owner of the securities of the Issuer beneficially owned by VSO II.