A10 Networks, Inc. — Director's Dealing 2021

Mar 25, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: A10 Networks, Inc. (ATEN)
CIK: 0001580808
Period of Report: 2021-03-23

Reporting Person: Becker Brian (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-03-23	Common Stock	M	3333	—	Acquired	43781	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-03-23	Performance-based Restricted Stock Units	$	M	3333	Disposed	2024-10-19	Common Stock (3333.0)	Direct

Footnotes

F1: Performance-Based Restricted Stock Units were previously reported on October 21, 2020, 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 October 19, 2020 and October 19, 2024. The second achievement date occurred on March 12, 2021, as certified by the compensation committee of ATEN on March 23, 2021, resulting in 3,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within 30 days of achievement of the milestone and an additional one-third on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I.