A10 Networks, Inc. — Director's Dealing 2023

Feb 22, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: A10 Networks, Inc. (ATEN)
CIK: 0001580808
Period of Report: 2023-02-21

Reporting Person: Becker Brian (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-02-21	Common Stock	A	13501	—	Acquired	72406	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-02-21	Performance-based Restricted Stock Units	$	A	20251	Acquired	2027-02-21	Common Stock (20251.0)	Direct

Footnotes

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.