Brian Becker - Jan 25, 2022 Form 4 Insider Report for A10 Networks, Inc. (ATEN)

Role: Chief Financial Officer
Signature: /s/ Robert Cochran as attorney-in-fact
Stock symbol: ATEN
Transactions as of: Jan 25, 2022
Transactions value $: $0
Form type: 4
Date filed: 1/27/2022, 03:56 PM
Previous filing: Jan 7, 2022
Next filing: Feb 2, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ATEN	Common Stock	Award	$0	+9.4K	+14.23%	$0.00	75.4K	Jan 25, 2022	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ATEN	Performance-based Restricted Stock Units	Award	$0	+21.9K		$0.00	21.9K	Jan 25, 2022	Common Stock	21.9K	$0.00	Direct	F2, F3

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

Explanation of Responses:

Id	Content
F1	Each share is represented by a Restricted Stock Unit ("RSU"). One-third (1/3) of the total RSUs will vest on each of the first three (3) anniversaries of February 1, 2022, provided that the Reporting Person continues to serve through each vesting date.
F2	Each share is represented by a Performance-based Restricted Stock Unit ("PSU")
F3	Grant of 21,920 Performance-Based Restricted Stock Units, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between January 25, 2022 and January 25, 2026 (each, a "Performance Milestone"). Upon achievement of a Performance Milestone, vesting is subject to continued employment with the Company through the applicable vesting date, which occurs in three equal installments with the first vesting to occur within thirty (30) days of achievement of the Performance Milestone and an additional one-third (1/3) on each of the first and second anniversaries of the date of achievement of the corresponding Performance Milestone.