Form 4 for ATEN A10 Networks, Inc.

Accepted 2026-02-13 00:00:00 ET · period of report 2026-02-12 · accession 0001936128-26-000011 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
D	2026-02-13	2026-02-12	ATEN	Weber Robert Scott	GC	A - Grant	$0.00	+7,413	55.0K	+16%	$0
D	2026-02-13	2026-02-12	ATEN	Weber Robert Scott	GC	A - Grant	$0.00	+7,413	7,413	New	$0

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2026-02-12	A	A	7,413	$0.00	54,967	D	—	—	(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 (2/1/2026), provided that the Reporting Person continues to serve through each such vesting date.
2	Derivative	Performance-based Restricted Stock Units	2026-02-12	A	A	7,413	$0.00	7,413	D	— · — to 2030-02-12	7,413 Common Stock	(F2) Each share is represented by a Performance-based Restricted Stock Unit ("PSU"). (F3) Grant of 7,413 PSUs, 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 12, 2026 and February 12, 2030 (each, a "Performance Milestone"). Upon achievement of a Performance Milestone, vesting is subject to continued employment with the Company through the applicable vesting date, the first fifty percent ( 50%) of which will occur within thirty (30) days of achievment of the applicable milestone and the balance to vest twenty-five percent (25%) on each of the first and second anniversaries of achievement of the corresponding Performance Milestone.