Eric Singer - 05 May 2026 Form 4 Insider Report for A10 Networks, Inc. (ATEN)

Reporting relationship: Director
Issuer ticker: ATEN
Reported as of: 05 May 2026
Net transaction value: -$672,033
SEC form: 4
Accepted by SEC: 06 May 2026, 21:32:43 UTC
Prior SEC filing: 23 Apr 2026
Next SEC filing: 21 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Jill Osato, Attorney-in-fact

Key filing fact

Eric Singer filed Form 4 for A10 Networks, Inc. (ATEN) on 06 May 2026.

Key facts

This page summarizes Eric Singer's Form 4 filing for A10 Networks, Inc. (ATEN).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 06 May 2026, 21:32.

Change

Previous filing in this sequence was filed on 23 Apr 2026.
Current net transaction value: -$672,033.

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 0001443284 Primary reporting owner

Singer Eric

Relationship: Director
Address: C/O A10 NETWORKS, INC., 2300 ORCHARD PARKWAY, SAN JOSE
Signature: /s/ Jill Osato, Attorney-in-fact
Signature date: 06 May 2026

Reported non-derivative transactions

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

ATEN transaction

Common Stock

Sale

Transaction value: $672,033
Shares: -24,698
Change %: -26%
Price: $27.21
Shares after: 68,806
Date: 05 May 2026
Ownership: Direct
Footnotes: F1

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

This is the weighted average price of the shares sold, which ranged from $26.88 to $27.41 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.