ATEN · Insider trading · 13F holders · Congress trades
A10 Networks, Inc. (ATEN)
Who is buying and selling ATEN: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 12
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $460K
- Congress trades, 12 months
- 0
ATEN at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 2 ATEN insiders filed 2 sales worth $460K on SEC Form 4, and no open-market purchases; 2 of the sales were pre-planned under Rule 10b5-1.
- 12 13F filers hold ATEN among their 50 largest positions, worth $296.0M combined. The biggest bets by portfolio weight are Punch & Associates Investment Management, Inc. (2.2%), 4D Advisors, LLC (1.9%) and Bridge City Capital, LLC (1.9%). In their latest 13Fs, 1 manager opened a new position and 1 added to one.
- No member of Congress has disclosed a trade in ATEN.
- ATEN last closed at $25.84 on Oct 29, 2026.
ATEN insider trading
Between Aug 1, 2026 and Oct 29, 2026, 2 ATEN insiders filed 2 sales worth $460K on SEC Form 4, and no open-market purchases; 2 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Aug 25, 2026 | Wolf Dana Elizabeth | Director | Sale10b5-1 | 2,652 | $25.65 | $68K | SEC |
| Aug 12, 2026 | Weber Robert Scott | General Counsel | Sale10b5-1 | 14,086 | $27.86 | $392K | SEC |
Who owns ATEN? Hedge funds and superinvestors
12 13F filers hold ATEN among their 50 largest positions, worth $296.0M combined. The biggest bets by portfolio weight are Punch & Associates Investment Management, Inc. (2.2%), 4D Advisors, LLC (1.9%) and Bridge City Capital, LLC (1.9%). In their latest 13Fs, 1 manager opened a new position and 1 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Penserra Capital Management LLCMutual fund manager | 0.9% | $114.6M | 3,068,045 | -14.6% shares | Q2 2026 |
| Boston Trust Walden CorpMutual fund manager | 0.7% | $90.3M | 2,416,808 | — | Q2 2026 |
| Punch & Associates Investment Management, Inc.Wealth manager | 2.2% | $44.4M | 1,188,747 | -18.6% shares | Q2 2026 |
| Paradigm Capital Management Inc/nyHedge fund | 0.4% | $14.4M | 384,700 | -4.2% shares | Q2 2026 |
| Bridge City Capital, LLCInstitutional asset manager | 1.9% | $9.1M | 334,912 | +13.1% shares | Q3 2026 |
| Informed Momentum Co LLCInstitutional asset manager | 0.6% | $7.1M | 188,768 | — | Q2 2026 |
| Summit Partners L PHedge fund | 1.1% | $5.4M | 200,065 | +0.0% shares | Q3 2026 |
| 4D Advisors, LLCHedge fund | 1.9% | $5.0M | 135,000 | New | Q2 2026 |
| Verity Asset Management, Inc.Wealth manager | 0.9% | $2.4M | 64,164 | — | Q2 2026 |
| Teton Advisors, LLCMutual fund manager | 0.8% | $1.3M | 36,000 | — | Q2 2026 |
| Illumine Investment Management, LLCWealth manager | 0.8% | $1.1M | 0 | — | Q3 2026 |
| Optimize Financial Inc.Mutual fund manager | 0.3% | $885K | 23,700 | — | Q2 2026 |
Each manager counts with its latest 13F (Q3 2026: 3, Q2 2026: 9). Screen ATEN in the grand portfolio →
ATEN stock trades by members of Congress
No member of Congress has disclosed a trade in ATEN.
ATEN questions and answers
Are insiders buying ATEN stock?
Between Aug 1, 2026 and Oct 29, 2026, 2 ATEN insiders filed 2 sales worth $460K on SEC Form 4, and no open-market purchases; 2 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own ATEN?
12 13F filers hold ATEN among their 50 largest positions, worth $296.0M combined. The biggest bets by portfolio weight are Punch & Associates Investment Management, Inc. (2.2%), 4D Advisors, LLC (1.9%) and Bridge City Capital, LLC (1.9%). In their latest 13Fs, 1 manager opened a new position and 1 added to one.
Has Congress traded ATEN?
No member of Congress has disclosed a trade in ATEN.
Who is the largest holder of ATEN?
Among 13F filers, Penserra Capital Management LLC reports the largest ATEN position, $114.6M (3,068,045 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Punch & Associates Investment Management, Inc.'s: 2.2% of its portfolio.
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