A10 Networks (ATEN)
A10 Networks on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on NYSE, classified by the SEC as computer communications equipment.
9.8M
Short interest
settlement 2026-09-30
7.3
Days to cover
-2.6 days vs prior
63.4%
Short share of volume
2026-10-23
5,013
Fails to deliver
settlement 2026-09-30
Tue 3 Nov
Next earnings
estimated date
-$460K
Insider flow, 90 days
0 buys, 2 sells
As of 2026-10-23.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 30 September 2026, short interest in ATEN is 9,761,461 shares, up 820,096 shares over the last month. Over the last 48 readings it ranged from 1,047,562 shares (15 November 2024) to 9,761,461 shares (30 September 2026). The latest reading sits at the top of that range. At the reported average volume of 1.3M shares a day that is 7.3 days to cover.
Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/aten" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-09-30 | 9,761,461 | +0.5% | 1,338,041 | 7.30 |
| 2026-09-15 | 9,713,373 | +8.6% | 983,207 | 9.88 |
| 2026-08-31 | 8,941,365 | +18.5% | 1,411,116 | 6.34 |
| 2026-08-14 | 7,543,199 | -0.9% | 1,415,680 | 5.33 |
| 2026-07-31 | 7,614,474 | +11.2% | 1,366,337 | 5.57 |
| 2026-07-15 | 6,846,972 | -4.5% | 1,130,149 | 6.06 |
| 2026-06-30 | 7,169,187 | +16.9% | 1,543,437 | 4.64 |
| 2026-06-15 | 6,132,453 | -1.7% | 1,221,679 | 5.02 |
| 2026-05-29 | 6,237,191 | -10.2% | 913,521 | 6.83 |
| 2026-05-15 | 6,945,326 | +15.7% | 929,841 | 7.47 |
| 2026-04-30 | 6,003,071 | +10.4% | 1,358,283 | 4.42 |
| 2026-04-15 | 5,434,926 | +4.9% | 826,354 | 6.58 |
| 2026-03-31 | 5,182,500 | -1.1% | 1,565,466 | 3.31 |
| 2026-03-13 | 5,239,959 | -0.4% | 627,672 | 8.35 |
| 2026-02-27 | 5,261,133 | -13.3% | 789,028 | 6.67 |
| 2026-02-13 | 6,071,723 | +4.7% | 1,212,651 | 5.01 |
| 2026-01-30 | 5,799,582 | -2.8% | 631,539 | 9.18 |
| 2026-01-15 | 5,967,030 | +2.3% | 527,345 | 11.32 |
| 2025-12-31 | 5,832,764 | +4.5% | 794,836 | 7.34 |
| 2025-12-15 | 5,578,847 | +7.2% | 640,840 | 8.71 |
| 2025-11-28 | 5,202,639 | -24.4% | 604,443 | 8.61 |
| 2025-11-14 | 6,886,395 | +5.4% | 912,194 | 7.55 |
| 2025-10-31 | 6,534,715 | +4.0% | 418,129 | 15.63 |
| 2025-10-15 | 6,285,531 | +2.9% | 436,670 | 14.39 |
| 2025-09-30 | 6,107,987 | +3.3% | 807,381 | 7.57 |
| 2025-09-15 | 5,913,117 | +9.2% | 622,777 | 9.49 |
| 2025-08-29 | 5,413,499 | -9.4% | 632,947 | 8.55 |
| 2025-08-15 | 5,977,315 | +2.4% | 948,548 | 6.30 |
| 2025-07-31 | 5,838,210 | -3.1% | 835,633 | 6.99 |
| 2025-07-15 | 6,026,764 | -0.4% | 872,870 | 6.90 |
| 2025-06-30 | 6,050,945 | +7.5% | 938,839 | 6.45 |
| 2025-06-13 | 5,627,934 | -0.4% | 612,050 | 9.20 |
| 2025-05-30 | 5,649,561 | -12.3% | 652,975 | 8.65 |
| 2025-05-15 | 6,440,454 | +18.1% | 1,111,546 | 5.79 |
| 2025-04-30 | 5,453,047 | -9.3% | 991,667 | 5.50 |
| 2025-04-15 | 6,013,581 | +5.3% | 1,008,389 | 5.96 |
| 2025-03-31 | 5,712,914 | +64.6% | 1,866,843 | 3.06 |
| 2025-03-14 | 3,470,304 | +75.8% | 1,664,970 | 2.08 |
| 2025-02-28 | 1,973,810 | +34.2% | 966,084 | 2.04 |
| 2025-02-14 | 1,470,710 | -18.3% | 830,095 | 1.77 |
| 2025-01-31 | 1,799,449 | -9.9% | 650,600 | 2.77 |
| 2025-01-15 | 1,996,514 | +6.4% | 542,101 | 3.68 |
| 2024-12-31 | 1,876,770 | +13.1% | 904,961 | 2.07 |
| 2024-12-13 | 1,659,300 | +7.7% | 681,118 | 2.44 |
| 2024-11-29 | 1,540,157 | +47.0% | 708,438 | 2.17 |
| 2024-11-15 | 1,047,562 | -14.9% | 741,940 | 1.41 |
| 2024-10-31 | 1,230,568 | -8.6% | 285,137 | 4.32 |
| 2024-10-15 | 1,345,669 | -13.3% | 368,885 | 3.65 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 23 October 2026, the short share of ATEN volume is 63.4%, down 4.7 points over the last five sessions. Over the last 30 readings it ranged from 29.7% (29 September 2026) to 90.4% (21 October 2026). The latest reading is in line with the 30-session average of 62.8%, on 174K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-23 | 110K | 174K | 63.4% | 11 |
| 2026-10-22 | 158K | 215K | 73.7% | 0 |
| 2026-10-21 | 868K | 960K | 90.4% | 0 |
| 2026-10-20 | 727K | 838K | 86.7% | 0 |
| 2026-10-19 | 110K | 210K | 52.4% | 0 |
| 2026-10-16 | 270K | 396K | 68.1% | 0 |
| 2026-10-15 | 175K | 337K | 51.9% | 0 |
| 2026-10-14 | 181K | 300K | 60.3% | 18 |
| 2026-10-13 | 142K | 225K | 63.3% | 30 |
| 2026-10-12 | 242K | 385K | 62.8% | 4 |
| 2026-10-09 | 266K | 369K | 72.1% | 0 |
| 2026-10-08 | 187K | 297K | 63.1% | 0 |
| 2026-10-07 | 254K | 328K | 77.5% | 549 |
| 2026-10-06 | 300K | 453K | 66.1% | 1,096 |
| 2026-10-05 | 174K | 277K | 62.8% | 0 |
| 2026-10-02 | 224K | 396K | 56.6% | 0 |
| 2026-10-01 | 237K | 380K | 62.4% | 0 |
| 2026-09-30 | 310K | 436K | 71.1% | 0 |
| 2026-09-29 | 170K | 570K | 29.7% | 0 |
| 2026-09-28 | 1.1M | 1.3M | 85.5% | 52 |
| 2026-09-25 | 115K | 323K | 35.6% | 0 |
| 2026-09-24 | 175K | 450K | 38.8% | 0 |
| 2026-09-23 | 163K | 316K | 51.6% | 0 |
| 2026-09-22 | 193K | 288K | 67.0% | 0 |
| 2026-09-21 | 150K | 251K | 59.8% | 0 |
| 2026-09-18 | 161K | 255K | 63.1% | 0 |
| 2026-09-17 | 279K | 412K | 67.6% | 2 |
| 2026-09-16 | 193K | 349K | 55.2% | 36 |
| 2026-09-15 | 314K | 475K | 66.1% | 0 |
| 2026-09-14 | 308K | 511K | 60.3% | 80 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 30 September 2026, the fails-to-deliver balance in ATEN is 5,013 shares, down 45,690 shares over the last settlement date. Over the last 30 readings it ranged from 63 shares (26 June 2026) to 79,860 shares (17 April 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-30 | 5,013 | $25.81 | $129K |
| 2026-09-25 | 50,703 | $25.99 | $1.3M |
| 2026-09-24 | 211 | $26.75 | $6K |
| 2026-09-23 | 7,997 | $26.70 | $214K |
| 2026-09-22 | 815 | $26.94 | $22K |
| 2026-09-16 | 5,664 | $26.75 | $152K |
| 2026-09-14 | 5,152 | $24.74 | $127K |
| 2026-09-03 | 947 | $24.76 | $23K |
| 2026-08-17 | 1,029 | $27.40 | $28K |
| 2026-08-14 | 4,875 | $27.00 | $132K |
| 2026-08-13 | 11,370 | $27.49 | $313K |
| 2026-08-11 | 5,666 | $28.33 | $161K |
| 2026-07-22 | 63 | $36.43 | $2K |
| 2026-07-02 | 7,632 | $38.00 | $290K |
| 2026-06-29 | 2,286 | $34.98 | $80K |
| 2026-06-26 | 63 | $34.74 | $2K |
| 2026-06-15 | 2,345 | $31.76 | $74K |
| 2026-06-08 | 3,063 | $30.57 | $94K |
| 2026-05-26 | 331 | $29.16 | $10K |
| 2026-05-13 | 25,379 | $27.35 | $694K |
| 2026-05-12 | 489 | $28.02 | $14K |
| 2026-05-08 | 967 | $27.27 | $26K |
| 2026-05-01 | 31,708 | $26.68 | $846K |
| 2026-04-30 | 5,082 | $26.63 | $135K |
| 2026-04-20 | 79,787 | $27.55 | $2.2M |
| 2026-04-17 | 79,860 | $26.52 | $2.1M |
| 2026-04-14 | 872 | $24.93 | $22K |
| 2026-03-31 | 56,300 | $22.36 | $1.3M |
| 2026-03-23 | 217 | $21.46 | $5K |
| 2026-03-19 | 17,134 | $21.48 | $368K |
Insider trades
SEC Form 4, newest first. JSONInsiders at ATEN reported 2 open-market sells worth $460K in the last 90 days and no open-market buys. Latest filing: Caron Michelle Elizabeth (Chief Financial Officer) on 2026-10-05.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-05 | Caron Michelle Elizabeth | Chief Financial Officer | Tax withholding | 2K | $28.19 | $49K | 34K |
| 2026-10-05 | Henry Mary C | Director | Grant | 8K | $0.00 | $0 | 8K |
| 2026-08-25 | Wolf Dana Elizabeth | Director | Sell | 3K | $25.65 | $68K | 57K |
| 2026-08-11 | Weber Robert Scott | General Counsel | Sell | 14K | $27.86 | $392K | 51K |
| 2026-07-06 | Weber Robert Scott | General Counsel | Tax withholding | 2K | $36.30 | $69K | 65K |
| 2026-05-15 | Weber Robert Scott | General Counsel | Tax withholding | 2K | $28.03 | $54K | 66K |
| 2026-05-15 | Trivedi Dhrupad | Chief Executive Officer | Tax withholding | 33K | $28.03 | $921K | 888K |
| 2026-05-15 | Caron Michelle Elizabeth | Chief Financial Officer | Tax withholding | 760 | $28.03 | $21K | 36K |
| 2026-05-15 | Caron Michelle Elizabeth | Chief Financial Officer | Tax withholding | 748 | $27.00 | $20K | 36K |
| 2026-05-15 | Weber Robert Scott | General Counsel | Tax withholding | 2K | $27.00 | $52K | 66K |
| 2026-05-15 | Trivedi Dhrupad | Chief Executive Officer | Tax withholding | 33K | $27.00 | $887K | 888K |
| 2026-05-14 | Caron Michelle Elizabeth | Chief Financial Officer | Exercise or conversion | 3K | $0.00 | $0 | 36K |
| 2026-05-14 | Weber Robert Scott | General Counsel | Exercise or conversion | 4K | $0.00 | $0 | 67K |
| 2026-05-14 | Weber Robert Scott | General Counsel | Exercise or conversion | 4K | $0.00 | $0 | 64K |
| 2026-05-14 | Trivedi Dhrupad | Chief Executive Officer | Exercise or conversion | 63K | $0.00 | $0 | 921K |
| 2026-05-14 | Trivedi Dhrupad | Chief Executive Officer | Exercise or conversion | 66K | $0.00 | $0 | 857K |
| 2026-05-06 | Caron Michelle Elizabeth | Chief Financial Officer | Tax withholding | 3K | $27.13 | $81K | 33K |
| 2026-05-06 | Weber Robert Scott | General Counsel | Tax withholding | 2K | $27.13 | $52K | 60K |
| 2026-05-06 | Trivedi Dhrupad | Chief Executive Officer | Tax withholding | 33K | $27.13 | $891K | 792K |
| 2026-05-05 | Caron Michelle Elizabeth | Chief Financial Officer | Exercise or conversion | 3K | $0.00 | $0 | 36K |
| 2026-05-05 | Caron Michelle Elizabeth | Chief Financial Officer | Exercise or conversion | 14K | $0.00 | $0 | 33K |
| 2026-05-05 | Weber Robert Scott | General Counsel | Exercise or conversion | 4K | $0.00 | $0 | 62K |
| 2026-05-05 | Weber Robert Scott | General Counsel | Exercise or conversion | 4K | $0.00 | $0 | 58K |
| 2026-05-05 | Trivedi Dhrupad | Chief Executive Officer | Exercise or conversion | 66K | $0.00 | $0 | 824K |
| 2026-05-05 | Trivedi Dhrupad | Chief Executive Officer | Exercise or conversion | 63K | $0.00 | $0 | 759K |
| 2026-05-05 | Singer Eric | Director | Sell | 25K | $27.21 | $672K | 69K |
| 2026-04-22 | Wolf Dana Elizabeth | Director | Grant | 7K | $0.00 | $0 | 60K |
| 2026-04-22 | Braham Tor | Director | Grant | 7K | $0.00 | $0 | 193K |
| 2026-04-22 | Singer Eric | Director | Grant | 7K | $0.00 | $0 | 94K |
| 2026-04-22 | CHUNG PETER Y | Director | Grant | 7K | $0.00 | $0 | 207K |
| 2026-02-28 | Weber Robert Scott | General Counsel | Tax withholding | 757 | $19.26 | $15K | 54K |
| 2026-02-28 | Trivedi Dhrupad | Chief Executive Officer | Tax withholding | 10K | $19.26 | $195K | 695K |
| 2026-02-24 | Trivedi Dhrupad | Chief Executive Officer | Tax withholding | 8K | $18.99 | $157K | 705K |
| 2026-02-13 | Trivedi Dhrupad | Chief Executive Officer | Sell | 33K | $20.55 | $685K | 714K |
| 2026-02-12 | Caron Michelle Elizabeth | Chief Financial Officer | Grant | 6K | $0.00 | $0 | 20K |
| 2026-02-12 | Khoury Sheen George | Executive VP, Sales and Mktg | Grant | 8K | $0.00 | $0 | 44K |
| 2026-02-12 | Weber Robert Scott | General Counsel | Grant | 7K | $0.00 | $0 | 55K |
| 2026-02-12 | Trivedi Dhrupad | Chief Executive Officer | Grant | 132K | $0.00 | $0 | 747K |
| 2026-02-12 | Trivedi Dhrupad | Chief Executive Officer | Sell | 33K | $20.56 | $685K | 615K |
| 2026-02-11 | Trivedi Dhrupad | Chief Executive Officer | Sell | 33K | $20.69 | $690K | 649K |
| 2026-02-10 | Weber Robert Scott | General Counsel | Tax withholding | 2K | $20.92 | $40K | 48K |
| 2026-02-10 | Trivedi Dhrupad | Chief Executive Officer | Tax withholding | 8K | $20.92 | $173K | 682K |
| 2026-02-01 | Weber Robert Scott | General Counsel | Tax withholding | 5K | $17.44 | $80K | 49K |
| 2026-02-01 | Trivedi Dhrupad | Chief Executive Officer | Tax withholding | 62K | $17.44 | $1.1M | 690K |
| 2026-01-31 | Weber Robert Scott | General Counsel | Tax withholding | 836 | $17.44 | $15K | 54K |
| 2026-01-31 | Trivedi Dhrupad | Chief Executive Officer | Tax withholding | 10K | $17.44 | $176K | 752K |
| 2026-01-15 | Weber Robert Scott | General Counsel | Tax withholding | 1K | $17.58 | $18K | 55K |
| 2026-01-15 | Trivedi Dhrupad | Chief Executive Officer | Tax withholding | 13K | $17.58 | $230K | 762K |
| 2025-12-15 | Weber Robert Scott | General Counsel | Tax withholding | 925 | $18.12 | $17K | 56K |
| 2025-12-15 | Trivedi Dhrupad | Chief Executive Officer | Tax withholding | 13K | $18.12 | $229K | 775K |
| 2025-12-12 | Weber Robert Scott | General Counsel | Gift | 600 | $0.00 | $0 | 57K |
| 2025-09-30 | Caron Michelle Elizabeth | Chief Financial Officer | Grant | 14K | $0.00 | $0 | 14K |
| 2025-08-18 | Weber Robert Scott | General Counsel | Gift | 600 | $0.00 | $0 | 56K |
| 2025-08-13 | Becker Brian | Chief Financial Officer | Sell | 6K | $18.03 | $115K | 78K |
| 2025-07-14 | Khoury Sheen George | Executive VP, Sales and Mktg | Grant | 35K | $0.00 | $0 | 37K |
| 2025-07-07 | Weber Robert Scott | General Counsel | Tax withholding | 2K | $20.14 | $38K | 57K |
| 2025-05-28 | Weber Robert Scott | General Counsel | Sell | 3K | $17.48 | $44K | 59K |
| 2025-05-27 | Weber Robert Scott | General Counsel | Sell | 3K | $17.26 | $43K | 61K |
| 2025-04-17 | Braham Tor | Director | Grant | 13K | $0.00 | $0 | 186K |
| 2025-04-17 | Singer Eric | Director | Grant | 13K | $0.00 | $0 | 86K |
| 2025-04-17 | Wolf Dana Elizabeth | Director | Grant | 13K | $0.00 | $0 | 53K |
| 2025-04-17 | CHUNG PETER Y | Director | Grant | 13K | $0.00 | $0 | 200K |
| 2025-03-11 | Trivedi Dhrupad | Chief Executive Officer | Tax withholding | 28K | $19.38 | $551K | 788K |
| 2025-03-11 | Weber Robert Scott | General Counsel | Tax withholding | 2K | $19.38 | $29K | 64K |
| 2025-03-11 | Becker Brian | Chief Financial Officer | Tax withholding | 4K | $19.38 | $74K | 84K |
| 2025-03-10 | Trivedi Dhrupad | Chief Executive Officer | Exercise or conversion | 79K | $0.00 | $0 | 817K |
| 2025-03-10 | Trivedi Dhrupad | Chief Executive Officer | Exercise or conversion | 49K | $0.00 | $0 | 737K |
| 2025-03-10 | Weber Robert Scott | General Counsel | Exercise or conversion | 6K | $0.00 | $0 | 65K |
| 2025-03-10 | Becker Brian | Chief Financial Officer | Exercise or conversion | 10K | $0.00 | $0 | 88K |
| 2025-03-10 | Becker Brian | Chief Financial Officer | Exercise or conversion | 7K | $0.00 | $0 | 78K |
| 2025-03-04 | Trivedi Dhrupad | Chief Executive Officer | Sell | 27K | $19.80 | $531K | 688K |
| 2025-03-03 | Trivedi Dhrupad | Chief Executive Officer | Sell | 27K | $20.59 | $552K | 715K |
| 2025-02-28 | Trivedi Dhrupad | Chief Executive Officer | Sell | 27K | $20.57 | $552K | 742K |
| 2025-02-21 | Trivedi Dhrupad | Chief Executive Officer | Tax withholding | 8K | $21.13 | $174K | 769K |
| 2025-02-21 | Becker Brian | Chief Financial Officer | Tax withholding | 1K | $21.13 | $26K | 70K |
| 2025-02-21 | Weber Robert Scott | General Counsel | Tax withholding | 4K | $21.13 | $80K | 59K |
| 2025-02-20 | Trivedi Dhrupad | Chief Executive Officer | Exercise or conversion | 49K | $0.00 | $0 | 777K |
| 2025-02-20 | Becker Brian | Chief Financial Officer | Exercise or conversion | 7K | $0.00 | $0 | 72K |
| 2025-02-20 | Weber Robert Scott | General Counsel | Exercise or conversion | 15K | $0.00 | $0 | 63K |
| 2025-02-14 | Weber Robert Scott | General Counsel | Tax withholding | 2K | $21.68 | $33K | 48K |
| 2025-02-14 | Becker Brian | Chief Financial Officer | Tax withholding | 3K | $21.68 | $56K | 64K |
| 2025-02-14 | Trivedi Dhrupad | Chief Executive Officer | Tax withholding | 20K | $21.68 | $437K | 728K |
| 2025-02-14 | Trivedi Dhrupad | Chief Executive Officer | Tax withholding | 20K | $21.68 | $437K | 769K |
| 2025-02-13 | Weber Robert Scott | General Counsel | Exercise or conversion | 6K | $0.00 | $0 | 49K |
| 2025-02-13 | Becker Brian | Chief Financial Officer | Exercise or conversion | 10K | $0.00 | $0 | 67K |
| 2025-02-13 | Trivedi Dhrupad | Chief Executive Officer | Exercise or conversion | 79K | $0.00 | $0 | 749K |
| 2025-02-06 | Trivedi Dhrupad | Chief Executive Officer | Grant | 127K | $0.00 | $0 | 669K |
| 2025-02-06 | Becker Brian | Chief Financial Officer | Grant | 14K | $0.00 | $0 | 57K |
| 2025-02-06 | Weber Robert Scott | General Counsel | Grant | 8K | $0.00 | $0 | 43K |
| 2025-02-03 | Trivedi Dhrupad | Chief Executive Officer | Tax withholding | 51K | $19.61 | $999K | 542K |
| 2025-02-03 | Becker Brian | Chief Financial Officer | Tax withholding | 7K | $19.61 | $132K | 43K |
| 2025-02-03 | Weber Robert Scott | General Counsel | Tax withholding | 3K | $19.61 | $63K | 36K |
| 2025-01-24 | Trivedi Dhrupad | Chief Executive Officer | Tax withholding | 34K | $19.46 | $661K | 593K |
| 2025-01-24 | Weber Robert Scott | General Counsel | Tax withholding | 2K | $19.46 | $40K | 39K |
| 2025-01-24 | Becker Brian | Chief Financial Officer | Tax withholding | 5K | $19.46 | $96K | 50K |
| 2025-01-23 | Trivedi Dhrupad | Chief Executive Officer | Exercise or conversion | 99K | $0.00 | $0 | 627K |
| 2025-01-23 | Weber Robert Scott | General Counsel | Exercise or conversion | 7K | $0.00 | $0 | 41K |
| 2025-01-23 | Becker Brian | Chief Financial Officer | Exercise or conversion | 13K | $0.00 | $0 | 55K |
| 2024-12-26 | Weber Robert Scott | General Counsel | Exercise or conversion | 7K | $0.00 | $0 | 36K |
| 2024-12-26 | Weber Robert Scott | General Counsel | Tax withholding | 2K | $18.81 | $35K | 34K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON8 Form 144 notices on file for ATEN worth $3.6M at the prices reported; 2 in the last 90 days worth $460K. Latest: DANA ELIZABETH WOLF filed on 2026-08-25 to sell 2,652 shares ($68K) from 2026-08-25.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-08-25 | DANA ELIZABETH WOLFDirector | 3K | $68K | 0.004% | 2026-08-25 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-11 | ROBERT S WEBEROfficer | 14K | $392K | 0.019% | 2026-08-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-07-02 | SHEEN KHOURYFormer Officer | 5K | $184K | 0.007% | 2026-07-02 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-10 | SHEEN KHOURYFormer Officer | 7K | $221K | 0.010% | 2026-06-10 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-05 | ERIC SINGERDirector | 25K | $672K | 0.034% | 2026-05-05 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-13 | DHRUPAD TRIVEDIOfficer, Director | 33K | $685K | 0.046% | 2026-02-13 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-12 | DHRUPAD TRIVEDIOfficer, Director | 33K | $685K | 0.046% | 2026-02-12 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-11 | DHRUPAD TRIVEDIOfficer, Director | 33K | $690K | 0.046% | 2026-02-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON4 holders report 5% or more of ATEN in their latest filing, all on Schedule 13G (passive). The largest reported stake is First Trust Portfolios L.P. at 6.7% of the class (4,809,261 shares), filed 2026-07-30 for an event on 2026-06-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-07-30 | 13G | First Trust Portfolios L.P.broker-dealer | 4.8M | 6.7% | 2026-06-30 |
| 2026-07-30 | 13G | First Trust Advisors L.P.investment adviser | 4.8M | 6.7% | 2026-06-30 |
| 2026-07-30 | 13G | The Charger Corporationparent holding company | 4.8M | 6.7% | 2026-06-30 |
| 2026-04-29 | 13G | Vanguard Capital Managementinvestment adviser | 3.7M | 5.1% | 2026-03-31 |
| 2026-03-26 | 13G/Ano. 5 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
13F holders
Tracked managers holding ATEN at their latest 13F. JSON7 of the 30 tracked managers held ATEN at their latest 13F, $134.3M in total at quarter-end prices. Renaissance Technologies is the largest at $56.8M (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 5 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Renaissance Technologies | 2026-06-30 | 1.5M | $56.8M | 0.08% | -265K |
| Two Sigma Investments | 2026-06-30 | 1.1M | $42.0M | 0.03% | -195K |
| D. E. Shaw & Co. | 2026-06-30 | 548K | $20.5M | 0.01% | +284K |
| Millennium Management | 2026-06-30 | 176K | $6.6M | 0.00% | -239K |
| Citadel Advisors | 2026-06-30 | 93K | $3.5M | 0.00% | -421K |
| AQR Capital Management | 2026-06-30 | 83K | $3.1M | 0.00% | +33K |
| Fisher Asset Management | 2026-06-30 | 50K | $1.9M | 0.00% | -25K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn Q2 FY 2026 (quarter ended 2026-06-30) A10 Networks reported revenue of $80.1M, up 15.5% from the same quarter a year earlier, and net income of $8.9M (0.12 diluted EPS). In FY 2025 it generated $84.9M of operating cash flow and spent $68.9M on buybacks and $17.4M on dividends. As of 2026-06-30, cash was $54.7M against $0 of debt.
- Cash
- $54.7M
- Debt
- $0
- Equity
- $238.0M
- Total assets
- $677.7M
- Shares outstanding
- 72,609,021
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 FY 2026 | 2026-06-30 | $80.1M | $8.9M | 11.1% | 0.12 |
| Q1 FY 2026 | 2026-03-31 | $75.0M | $12.0M | 16.0% | 0.17 |
| Q4 FY 2025derived | 2025-12-31 | $80.4M | $9.9M | 12.3% | n/a |
| Q3 FY 2025 | 2025-09-30 | $74.7M | $12.2M | 16.3% | 0.17 |
| Q2 FY 2025 | 2025-06-30 | $69.4M | $10.5M | 15.2% | 0.14 |
| Q1 FY 2025 | 2025-03-31 | $66.1M | $9.5M | 14.4% | 0.13 |
| Q4 FY 2024derived | 2024-12-31 | $74.2M | $18.3M | 24.7% | n/a |
| Q3 FY 2024 | 2024-09-30 | $66.7M | $12.6M | 18.9% | 0.17 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | $290.6M | $42.1M | $84.9M | $20.1M | $68.9M | $17.4M |
| FY 2024 | 2024-12-31 | $261.7M | $50.1M | $90.5M | $12.3M | $30.1M | $17.8M |
| FY 2023 | 2023-12-31 | $251.7M | $40.0M | $44.5M | $10.9M | $16.0M | $17.8M |
| FY 2022 | 2022-12-31 | $280.3M | $46.9M | $66.1M | $10.8M | $79.3M | $15.9M |
| FY 2021 | 2021-12-31 | $250.0M | $94.9M | $50.1M | $5.2M | $18.3M | $3.9M |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-07-31 from the cover page.
What this page is
A10 Networks in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows A10 Networks (ATEN), SEC CIK 1580808, listed on NYSE, classified by the SEC as computer communications equipment. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-09-30.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-23.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-30.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-08-25.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-07-30.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-05.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-10-05.JSON and CSV
- Company record
- EDGAR filing index for CIK 1580808Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
Other companies the SEC classifies as computer communications equipment
Other company pages
Datasets
Frequently Asked Questions
How much of ATEN is sold short?
9,761,461 shares were held short at the 2026-09-30 settlement, 7.3 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is ATEN's daily short volume?
On 2026-10-23, 110,490 of the 174,289 ATEN shares reported to FINRA were sold short, 63.4% of the day's reported volume. Short volume is a flow for one day, not a position.
Does ATEN have fails to deliver?
The SEC's latest file shows 5,013 ATEN shares failed to deliver at settlement 2026-09-30. Fails are reported per settlement date and published twice a month with a lag.
Are ATEN insiders buying or selling?
Insiders at ATEN reported 2 open-market sells worth $460K in the last 90 days and no open-market buys. Latest filing: Caron Michelle Elizabeth (Chief Financial Officer) on 2026-10-05.
Have ATEN insiders filed to sell?
8 Form 144 notices on file for ATEN worth $3.6M at the prices reported; 2 in the last 90 days worth $460K. Latest: DANA ELIZABETH WOLF filed on 2026-08-25 to sell 2,652 shares ($68K) from 2026-08-25.
Who owns 5% or more of ATEN?
4 holders report 5% or more of ATEN in their latest filing, all on Schedule 13G (passive). The largest reported stake is First Trust Portfolios L.P. at 6.7% of the class (4,809,261 shares), filed 2026-07-30 for an event on 2026-06-30.
What did ATEN report last quarter?
In Q2 FY 2026 (quarter ended 2026-06-30) A10 Networks reported revenue of $80.1M, up 15.5% from the same quarter a year earlier, and net income of $8.9M (0.12 diluted EPS). In FY 2025 it generated $84.9M of operating cash flow and spent $68.9M on buybacks and $17.4M on dividends. As of 2026-06-30, cash was $54.7M against $0 of debt.
Which tracked 13F managers own ATEN?
7 of the 30 tracked 13F managers held ATEN shares at their latest filing, $134.3M in all. The largest: Renaissance Technologies (1.5M shares, $56.8M), Two Sigma Investments (1.1M shares, $42.0M), D. E. Shaw & Co. (548K shares, $20.5M), Izzy Englander's Millennium Management (176K shares, $6.6M), Ken Griffin's Citadel Advisors (93K shares, $3.5M), Cliff Asness's AQR Capital Management (83K shares, $3.1M). The table above lists all 7.
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.