Sheen George Khoury - 12 Feb 2026 Form 4 Insider Report for A10 Networks, Inc. (ATEN)

Reporting relationship: Executive VP, Sales and Mktg
Issuer ticker: ATEN
Reported as of: 12 Feb 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 13 Feb 2026, 17:26:00 UTC
Prior SEC filing: 15 Jul 2025
Source filing: View source filing
Reporting owner signature: /s/ Jill Osato, as Attorney-in-Fact

Key filing fact

Sheen George Khoury filed Form 4 for A10 Networks, Inc. (ATEN) on 13 Feb 2026.

Key facts

This page summarizes Sheen George Khoury's Form 4 filing for A10 Networks, Inc. (ATEN).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 13 Feb 2026, 17:26.

Change

Previous filing in this sequence was filed on 15 Jul 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002074992 Primary reporting owner

Khoury Sheen George

Relationship: Executive VP, Sales and Mktg
Address: 2300 ORCHARD PARKWAY, SAN JOSE
Signature: /s/ Jill Osato, as Attorney-in-Fact
Signature date: 13 Feb 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ATEN transaction

Common Stock

Award

Transaction value: $0
Shares: +7,771
Change %: +21%
Price: $0.000000
Shares after: 44,294
Date: 12 Feb 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ATEN transaction Derivative

Performance-based Restricted Stock Units

Award

Transaction value: $0
Shares: +7,771
Change %
Price: $0.000000
Shares after: 7,771
Date: 12 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 7,771
Exercise price
Footnotes: F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote 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.

Footnote F2

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

Footnote F3

Grant of 7,771 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.