ADTRAN
Builds access, aggregation, optical networking, and support systems for broadband operators.
$7.81
After-hours close+0.09 (+1.23%)
At close$7.72(−0.96%)
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Breakdown13F · Form 4
Institutions 105.93%Insiders 2.34%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 81.00M · Float 79.43M · 98.1% free float
Institutions13F, as of Jun 30, 2026
256 holders · 85.80M shares · 55 new positions · 149 increased · 73 reduced · 32 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 7.84M | 9.67% | −4.1K | Aug 7, 2026 |
| Vanguard Portfolio Management LLC | 5.14M | 6.34% | +364.2K | Aug 13, 2026 |
| Vanguard Capital Management LLC | 3.51M | 4.33% | +84.0K | Aug 13, 2026 |
| State Street Corp | 3.08M | 3.81% | +732.1K | Aug 7, 2026 |
| Royce & Associates LP | 2.97M | 3.67% | −154.5K | Aug 14, 2026 |
| UBS Group AG | 2.94M | 3.63% | +2.69M | Aug 13, 2026 |
| Two Sigma Investments, LP | 2.90M | 3.58% | +1.77M | Aug 14, 2026 |
| Millennium Management LLC | 2.72M | 3.36% | +826.4K | Aug 14, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| EGORA Ventures AG (f/k/a EGORA Holding GmbH) | 6.73% | 5.36M | 13G | Mar 6, 2025 ↗ |
| Vanguard Portfolio Management | 6.03% | 4.87M | 13G | Apr 28, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Thomas R. Stanton | director, officer: Chairman & CEO | 1.13M | 1.39% | Apr 3, 2026 |
| James Denson Jr Wilson | officer: Chief Revenue Officer | 132.8K | 0.16% | May 22, 2026 |
| Balan Nair | director | 125.4K | 0.15% | Jan 5, 2026 |
| H. Fenwick Huss | director | 107.6K | 0.13% | Jan 5, 2026 |
| Kathryn A. Walker | director | 98.7K | 0.12% | Jan 5, 2026 |
| Christoph Glingener | officer: Chief Technology Officer | 84.0K | 0.10% | Aug 10, 2026 |
| Gregory James McCray | director | 72.9K | 0.09% | Jan 5, 2026 |
| Nikos Theodosopoulos | director | 66.0K | 0.08% | Jan 5, 2026 |
| Timothy P. Santo | officer: SVP of Finance; CFO | 59.9K | 0.07% | Aug 7, 2026 |
| Hourigan Rice Jacqueline | director | 13.8K | 0.02% | Mar 5, 2026 |
2 ten-percent owners hold 5.67M shares by Form 4, outside the officers-and-directors figure above · 23 people have not refiled in the last 18 months (890.4K shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 6, 2026 | Timothy P. Santoofficer: SVP of Finance; CFO | Purchase | 6,579 | $7.60 | 59,924 |
| May 20, 2026 | James Denson Jr Wilsonofficer: Chief Revenue Officer | Sale | 9,332 | $14.72 | 143,277 |
| May 7, 2026 | Christoph Glingenerofficer: Chief Technology Officer | Sale · 2 lots | 126,115 | $14.95 | 46,645 |
| May 8, 2026 | Christoph Glingenerofficer: Chief Technology Officer | Sale | 22,277 | $15.00 | 46,645 |
| Mar 4, 2026 | Hourigan Rice Jacquelinedirector | Sale | 14,406 | $10.29 | 13,809 |
| Nov 26, 2025 | Nikos Theodosopoulosdirector | Purchase | 12,859 | $7.81 | 52,154 |
| Nov 28, 2025 | Timothy P. Santoofficer: SVP of Finance; CFO | Purchase | 6,150 | $8.02 | 26,594 |
| Nov 24, 2025 | Thomas R. Stantondirector, officer: Chairman & CEO | Purchase | 40,928 | $7.33 | 982,096 |
CongressHouse and Senate disclosures
Not reported.