Michelle Elizabeth Caron - 15 May 2026 Form 4/A - Amendment Insider Report for A10 Networks, Inc. (ATEN)

Reporting relationship: Chief Financial Officer
Issuer ticker: ATEN
Reported as of: 15 May 2026
Net transaction value: $0
SEC form: 4/A - Amendment
Accepted by SEC: 15 May 2026, 19:25:59 UTC
Original report date: 15 May 2026
Prior SEC filing: 15 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Jill Osato, as Attorney-in-Fact

Key filing fact

Michelle Elizabeth Caron filed Form 4/A - Amendment for A10 Networks, Inc. (ATEN) on 15 May 2026.

Key facts

This page summarizes Michelle Elizabeth Caron's Form 4/A - Amendment filing for A10 Networks, Inc. (ATEN).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 15 May 2026, 19:25.

Change

Previous filing in this sequence was filed on 15 May 2026.
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/A - Amendment disclosures.

View source filing

Reporting Owners (1)

CIK 0002085974 Primary reporting owner

Caron Michelle Elizabeth

Relationship: Chief Financial Officer
Address: 2300 ORCHARD PARKWAY, SAN JOSE
Signature: /s/ Jill Osato, as Attorney-in-Fact
Signature date: 15 May 2026

Reported non-derivative transactions

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

ATEN transaction

Common Stock

Tax liability

Transaction value
Shares: -760
Change %: -2.1%
Price: $28.03^*
Shares after: 35,614
Date: 15 May 2026
Ownership: Direct
Footnotes: F1, 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

This amendment to the original Form 4 filed on May 15, 2026 is being filed to correct the number of shares withheld, on a non-discretionary basis, for tax purposes related to a February 12, 2026 perfomance-based restricted stock unit grant that vested on May 14, 2026.

Footnote F2

This amendment to the original Form 4 filed on May 15, 2026 is also being filed to correc the price reported on Column 4 of Table I in connection with the shares withheld, on a non-discretionary basis, for tax purposes related to a February 12, 2026 performance-based restricted stock unit grant that vested on May 14, 2026.

Footnote F3

The total number of shares reported on Column 5 of Table I of this amendment is the total owned by the reporting person as of May 15, 20206, which reflects the corrected number of shares withheld.