Brian Becker - Feb 21, 2023 Form 4 Insider Report for A10 Networks, Inc. (ATEN)

Role: Chief Financial Officer
Signature: /s/ Jill Osato, Attorney-in-fact
Stock symbol: ATEN
Transactions as of: Feb 21, 2023
Transactions value $: $0
Form type: 4
Date filed: 2/22/2023, 04:05 PM
Previous filing: Feb 15, 2023
Next filing: Mar 14, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ATEN	Common Stock	Award	$0	+13.5K	+22.92%	$0.00	72.4K	Feb 21, 2023	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	+20.3K		$0.00	20.3K	Feb 21, 2023	Common Stock	20.3K		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 the Vesting Commencement Date (2/1/2023), provided that the Reporting Person continues to serve through each such vesting date.
F2	Each share is represented by a Performance-based Restricted Stock Unit ("PSU").
F3	Grant of 20,251 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 February 21, 2023 and February 21, 2027 (each, a "Performance Milestone"). Upon achievement of a Performance Milestone, vesting is subject to continued employment with the Company through the applicable vesting date, with one-half (1/2) vesting within thirty (30) days of achievement of the Performance Milestone and an additional one-fourth (1/4) vesting on each of the first and second anniversaries of the date of achievement of the corresponding Performance Milestone.