SEC Form 4
A10 NETWORKS INC (ATEN) insider trading
In the 12 months to Oct 26, 2026, 4 ATEN insiders reported open-market sales of $3.2M across 4 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $3.2M
- 4 filings · 4 insiders
- Open-market purchases
- $0
- 0 filings
- Pre-arranged sales (10b5-1)
- 3 of 4
- $2.5M of $3.2M sold (79%)
Who traded ATEN, and when
- Sale
- Sale, pre-arranged (10b5-1)
ATEN daily close from Oct 27, 2025 to Oct 26, 2026, between $16.55 and $38.11, last $25.95. 4 sale and 0 purchase filings by 4 insiders, marked at their filing dates. Dhrupad Trivedi, Chief Executive Officer: sold $2.1M across 1 filing, first filed Feb 13, 2026, last Feb 13, 2026. Eric Singer, Director: sold $672.0K across 1 filing, first filed May 6, 2026, last May 6, 2026. Robert Scott Weber, General Counsel: sold $392.4K across 1 filing, first filed Aug 12, 2026, last Aug 12, 2026. Dana Elizabeth Wolf, Director: sold $68.0K across 1 filing, first filed Aug 25, 2026, last Aug 25, 2026.
Largest mark · tap a row for others
Dhrupad Trivedi · Chief Executive Officer
Sale $2,060,000
100,000 shares at $20.60 avg
Filed Feb 13, 2026 · traded Feb 11
Pre-arranged (10b5-1) · close on filing date $20.70
Dhrupad Trivedi · Chief Executive Officer
Chief Executive Officer
$2.1M soldEric Singer · Director
Director
$672.0K soldRobert Scott Weber · General Counsel
General Counsel
$392.4K soldDana Elizabeth Wolf · Director
Director
$68.0K soldOpen-market trades
4 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Dhrupad Trivedi | Chief Executive Officer | $2.1M | — | 1 | 100% of sales | |
| Eric Singer | Director | $672.0K | — | 1 | — | |
| Robert Scott Weber | General Counsel | $392.4K | — | 1 | 100% of sales | |
| Dana Elizabeth Wolf | Director | $68.0K | — | 1 | 100% of sales |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Dana Elizabeth Wolf Director | SalePre-arranged (10b5-1) | 2,652 | $25.65 | $68.0K | 57,409 | |
traded | Robert Scott Weber General Counsel | SalePre-arranged (10b5-1) | 14,086 | $27.86 | $392.4K | 50,586 | |
traded | Eric Singer Director | Sale | 24,698 | $27.21 | $672.0K | 68,806 | |
traded | Dhrupad Trivedi Chief Executive Officer | SalePre-arranged (10b5-1) | 100,000 | $20.60 | $2.1M | 713,597 |
GET /stocks/filings/vX/form-4?tickers=ATEN&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"ATEN"
],
"issuer_cik": "0001580808",
"owner_cik": "0001931555",
"accession_number": "0001931555-26-000007",
"form_type": "4",
"filing_date": "2026-08-25",
"period_of_report": "2026-08-25",
"issuer_name": "A10 Networks, Inc.",
"issuer_trading_symbol": "ATEN",
"owner_name": "Wolf Dana Elizabeth",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-08-25",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 2652,
"transaction_price_per_share": 25.65,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 57409,
"transaction_value": 68023.8,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 15, 2026."
}
]
},
{
"tickers": [
"ATEN"
],
"issuer_cik": "0001580808",
"owner_cik": "0001936128",
"accession_number": "0001936128-26-000027",
"form_type": "4",
"filing_date": "2026-08-12",
"period_of_report": "2026-08-11",
"issuer_name": "A10 Networks, Inc.",
"issuer_trading_symbol": "ATEN",
"owner_name": "Weber Robert Scott",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "General Counsel",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-08-11",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 14086,
"transaction_price_per_share": 27.86,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 50586,
"transaction_value": 392435.96,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 9, 2026."
},
{
"id": "F2",
"description": "This is the weighted average price of the shares sold, which ranged from $27.55 to $28.46 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."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 42 records
- Option exercises11 records
- Tax withholding21 records
- Grants and awards9 records
- Gifts1 record
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has A10 NETWORKS INC's CEO sold stock?
Yes. Dhrupad Trivedi (CEO) sold 100,000 shares ($2.1M) in Feb 2026, all under a pre-arranged 10b5-1 plan.
How current is ATEN’s insider data?
These are ATEN Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for ATEN every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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