As of November 7, 2026, A10 Networks, Inc. is a publicly traded company (NYSE: ATEN); its largest reported holder is First Trust Portfolios L.P., with 6.68% on Schedule 13G of July 30, 2026, then Vanguard (5.21%). The largest insider holding is Dhrupad Trivedi, the chief executive and a director, with 887,847 shares (1.2% of shares outstanding), per Form 4/A of May 15, 2026 (Schedule 13G, July 30, 2026).
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Is A10 Networks, Inc. a real, registered company?
- A10 Networks Inc files with the SEC under CIK 1580808 (its SEC filings).
- Its shares are listed under the ticker ATEN on NYSE (SEC company record).
- Incorporated in Delaware; business address in San Jose, California, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under A10 Networks Inc in our court records and SEC 8-K records (as of 2026-11-07).
- Leadership changes: the latest reported is Mary C. Henry, Director (Form 8-K filed 2026-09-14). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Vanguard (filed 2026-10-30).
Who are A10 Networks, Inc.'s owners and officers?
A10 Networks, Inc.: incorporated in Delaware; business address in San Jose, California; industry Computer Communications Equipment (Schedule 13G, 2026-10-30).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G, 2026-10-30 | Vanguard Portfolio Management | 5.21% |
| Schedule 13G/A, 2026-10-30 | Vanguard Capital Management | 4.99% |
| Schedule 13G, 2026-07-30 | First Trust Portfolios L.P. | 6.68% |
| Schedule 13G, 2026-04-29 | Vanguard Capital Management | 5.09% |
| Schedule 13G/A, 2026-03-26 | The Vanguard Group | 0% |
| Schedule 13G/A, 2025-07-09 | Legal & General Group PLC | 3.1% |
Questions about who owns A10 Networks, Inc.
Who owns A10 Networks, Inc.?
On this page, 2 holders' latest ownership filings report 5% or more of A10 Networks, Inc.: First Trust Portfolios L.P. (6.68%, Schedule 13G, filed 2026-07-30) and Vanguard Portfolio Management (5.21%, Schedule 13G, filed 2026-10-30).
Who are the largest shareholders of A10 Networks, Inc.?
By the share each holder's latest filing reports, the largest holders of A10 Networks, Inc. on this page are First Trust Portfolios L.P. (6.68%) and Vanguard Portfolio Management (5.21%).
When did First Trust Portfolios L.P. buy into A10 Networks, Inc.?
The filings give report dates, not purchase dates. The earliest filing from First Trust Portfolios L.P. on this page is the Schedule 13G, filed 2026-07-30, reporting 6.68%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 6 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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What the Full Report on A10 Networks, Inc. covers
The Short Answer
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What They Do, And How The Money Works
Who Runs It, And How To Reach Them
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Who Pays Them, And Who They Are Up Against
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| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-09-14 | Mary C. Henry | Director | appointed | 2026-10-05 |
| Form 8-K, 2026-05-01 | Sheen Khoury | Executive Vice President, Worldwide Sales and Marketing | departed |
Which insiders own A10 Networks, Inc. shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , the chief executive and a director: 887,847 shares (1.2% of shares outstanding) (Form 4/A, 2026-05-15).
- , a director: 207,298 shares (0.29% of shares outstanding), held indirectly (the form names the holder only in its footnotes) (Form 4, 2026-04-24).
- , a director: 192,812 shares (0.27% of shares outstanding) (Form 4, 2026-04-23).
- , the chief financial officer: 77,599 shares (0.11% of shares outstanding) (Form 4, 2025-08-14).
- , a director: 68,806 shares (0.10% of shares outstanding) (Form 4, 2026-05-06).
Shares outstanding: 72,051,535 as of 2026-10-29, from the company's latest SEC cover page.
How much has A10 Networks, Inc. raised?
No fundraising or offering filing from A10 Networks, Inc. is on file with us.
Keep reading
More on A10 Networks, Inc. and the records around it.
A10 Networks, Inc. elsewhere on the record
- 5%+ stake filings Oct 2026
- Leadership changes Sep 2026
Companies that share a holder
- Legal & General Group Plc also filed stake reports on 7 other companies: Fastly, Inc. (Jul 2025), NETSCOUT SYSTEMS, INC. (Jul 2025), Eos Energy Enterprises, Inc. (Jul 2025)
- First Trust Portfolios L.P. also filed stake reports on 105 other companies: First Trust Exchange-Traded Fund (Nov 2026), First Trust Exchange-Traded Fund IV (Nov 2026), First Trust Exchange-Traded Fund VIII (Nov 2026)
- Vanguard Portfolio Management also filed stake reports on 941 other companies: Newmark Group Inc (Nov 2026), ADT Inc (Oct 2026), Appian Corp (Oct 2026)
Related pages
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