A10 Networks, Inc. — Director's Dealing 2020

Jul 8, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: A10 Networks, Inc. (ATEN)
CIK: 0001580808
Period of Report: 2020-07-02

Reporting Person: Reiss Gunter (VP Worldwide Marketing)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-07-02	Common Stock	A	17543	—	Acquired	156158	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2020-07-02	Performance-based Restricted Stock Units	$0.0	A	40935	Acquired	2024-07-02	Common Stock (40935.0)	Direct

Footnotes

F1: Each share is represented by a Restricted Stock Unit ("RSU"). One-fourth (1/4) of the total RSUs will vest on each of the first four (4) anniversaries of the Vesting Commencement Date (4/1/2020), provided that the Reporting Person continues to serve through each vesting date.

F2: Includes shares acquired by the Reporting Person pursuant to the Issuer's Employee Stock Purchase Plan.

F3: Each share is represented by a Performance-based Restricted Stock Unit ("PSU").

F4: Grant of 40,935 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 period between July 2, 2020 and July 2, 2024. Vesting is subject to continued employment with the Company through the applicable vesting date, which occurs in three equal annual installments beginning on the date of achievement of the milestone and the balance on each of the first and second anniversaries of the corresponding performance milestone.