A10 Networks, Inc.
A10 Networks, Inc. (ATEN) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ATEN · as of Mar 31, 2025
Ownership Breakdown
262
Institutional Holders
▲ 40 vs Q4
$1.15B
Total Inst. Value
▼ $43.92M vs Q4
72.00M
Shares Outstanding
freeFloat 98.11%
70.53M
13F Shares Held
▲ 5.49M vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ATEN largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. computer communications equipment | 13.35M | 18.15% | 18.15% | $218.19B | May 2, 2025 | ▼ 244.2K |
VANGUARD GROUP INC computer communications equipment | 7.39M | 10.05% | 10.05% | $120.82B | May 9, 2025 | ▲ 34.6K |
STATE STREET CORP computer communications equipment | 3.34M | 4.54% | 4.54% | $54.62B | May 15, 2025 | ▲ 12.0K |
MIRAE ASSET GLOBAL ETFS HOLDINGS LTD. computer communications equipment | 2.68M | 3.65% | 3.65% | $43.84B | May 15, 2025 | ▲ 202.5K |
PENSERRA CAPITAL MANAGEMENT LLC computer communications equipment | 2.54M | 3.45% | 3.45% | $41.49B | Apr 29, 2025 | ▲ 584.1K |
RENAISSANCE TECHNOLOGIES LLC computer communications equipment | 2.36M | 3.20% | 3.20% | $38.50B | May 14, 2025 | ▲ 423.0K |
DIMENSIONAL FUND ADVISORS LP computer communications equipment | 1.74M | 2.36% | 2.36% | $28.39B | May 13, 2025 | ▼ 83.4K |
FIRST TRUST ADVISORS LP computer communications equipment | 1.73M | 2.36% | 2.36% | $28.34B | May 14, 2025 | ▲ 233.3K |
GEODE CAPITAL MANAGEMENT, LLC computer communications equipment | 1.73M | 2.35% | 2.35% | $28.31B | May 13, 2025 | ▲ 54.9K |
BOSTON TRUST WALDEN CORP computer communications equipment | 1.65M | 2.24% | 2.24% | $26.89B | Apr 21, 2025 | NEW |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
32
Increased
+6.25M shares2
New Positions
first time holders15
Decreased
−2.42M shares0
Sold Out
fully exitedNet shares change (top 50)
+3.83M
+6.25M / −2.42M
Net new holders
+19
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ATEN insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
15
Buy transactions
19
Sell transactions
0.79
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Caron Michelle Elizabeth Chief Financial Officer | May 15, 2026 | Tax Withhold | 760 | $28.03 | $21.3K | 35.6K | Form 4 ↗ |
Trivedi Dhrupad Chief Executive Officer | May 15, 2026 | Tax Withhold | 32,858 | $28.03 | $921.0K | 887.8K | Form 4 ↗ |
Weber Robert Scott General Counsel | May 15, 2026 | Tax Withhold | 1,930 | $28.03 | $54.1K | 65.5K | Form 4 ↗ |
Caron Michelle Elizabeth Chief Financial Officer | May 15, 2026 | Tax Withhold | 748 | $27.00 | $20.2K | 35.6K | Form 4 ↗ |
Trivedi Dhrupad Chief Executive Officer | May 15, 2026 | Tax Withhold | 32,858 | $27.00 | $887.2K | 887.8K | Form 4 ↗ |
Weber Robert Scott General Counsel | May 15, 2026 | Tax Withhold | 1,930 | $27.00 | $52.1K | 65.5K | Form 4 ↗ |
Singer Eric director | May 5, 2026 | Sale | 24,698 | $27.21 | $672.0K | 68.8K | Form 4 ↗ |
Trivedi Dhrupad Chief Executive Officer | May 6, 2026 | Tax Withhold | 32,858 | $27.13 | $891.4K | 791.5K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
A10 Networks, Inc. (ATEN) is primarily owned by institutional investors, who hold approximately 98.0% of total shares outstanding. Company insiders own approximately 1.89%, while retail and public investors account for the remaining 0.15%.
The largest institutional shareholder of A10 Networks, Inc. is BLACKROCK, INC., holding approximately 13.35 million shares — equal to 18.15% of outstanding shares — as of March 31, 2025.
A total of 262 institutional investors currently hold ATEN stock, with a combined institutional value of approximately $1.15 billion as of the most recent 13F filing period.
Frequently asked questions
ATEN ownershipA10 Networks, Inc. (ATEN) is primarily owned by institutional investors, who hold approximately 98.0% of shares. The largest shareholder is BLACKROCK, INC. with a 18.15% stake. Company insiders hold 1.89%. Data sourced from SEC Form 13F as of March 31, 2025.