ADTN (ADTRAN Holdings, Inc. Common Stock)
Insider Trading Activity
Every open-market purchase and sale reported by ADTN officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-28 | Christoph Glingener | Chief Technology Officer | A | — | — |
| 2026-07-06 | Anne DelSanto | Director | A | — | — |
| 2026-05-22 | James Denson Jr Wilson | Chief Revenue Officer | MIXED | — | — |
| 2026-05-11 | Christoph Glingener | Chief Technology Officer | MIXED | — | — |
| 2026-04-03 | THOMAS R STANTON | Chairman & CEO | A | — | — |
| 2026-04-03 | Timothy P Santo | SVP of Finance; CFO | A | — | — |
| 2026-04-03 | James Denson Jr Wilson | Chief Revenue Officer | A | — | — |
| 2026-03-23 | Timothy P Santo | SVP of Finance; CFO | F | — | — |
| 2026-03-05 | THOMAS R STANTON | Chairman & CEO | A | — | — |
| 2026-03-05 | Hourigan Rice Jacqueline | Director | Sell | — | — |
| 2026-01-30 | James Denson Jr Wilson | Chief Revenue Officer | F | — | — |
| 2026-01-28 | James Denson Jr Wilson | Chief Revenue Officer | MIXED | — | — |
| 2026-01-28 | THOMAS R STANTON | Chairman & CEO | MIXED | — | — |
| 2026-01-27 | THOMAS R STANTON | Chairman & CEO | F | — | — |
| 2026-01-27 | James Denson Jr Wilson | Chief Revenue Officer | F | — | — |
| 2026-01-22 | THOMAS R STANTON | Chairman & CEO | F | — | — |
| 2026-01-22 | James Denson Jr Wilson | Chief Revenue Officer | F | — | — |
| 2026-01-05 | Gregory James McCray | Director | A | — | — |
| 2026-01-05 | Nikos Theodosopoulos | Director | A | — | — |
| 2026-01-05 | Hourigan Rice Jacqueline | Director | A | — | — |
| 2026-01-05 | Kathryn A Walker | Director | A | — | — |
| 2026-01-05 | H FENWICK HUSS | Director | A | — | — |
| 2026-01-05 | Balan Nair | Director | A | — | — |
| 2025-12-01 | Nikos Theodosopoulos | Director | Buy | — | — |
| 2025-12-01 | Timothy P Santo | SVP of Finance; CFO | Buy | — | — |
| 2025-11-25 | THOMAS R STANTON | Chairman & CEO | Buy | — | — |
| 2025-11-19 | James Denson Jr Wilson | Chief Revenue Officer | F | — | — |
| 2025-11-19 | THOMAS R STANTON | Chairman & CEO | F | — | — |
| 2025-07-15 | THOMAS R STANTON | Chairman & CEO | F | — | — |
| 2025-04-15 | THOMAS R STANTON | Chairman & CEO | F | — | — |
| 2025-03-20 | Timothy P Santo | SVP of Finance; CFO | A | — | — |
| 2025-01-28 | Christoph Glingener | Chief Technology Officer | A | — | — |
| 2025-01-28 | THOMAS R STANTON | Chairman & CEO | MIXED | — | — |
| 2025-01-28 | James Denson Jr Wilson | Chief Revenue Officer | MIXED | — | — |
| 2025-01-28 | Ulrich Dopfer | Chief Financial Officer | MIXED | — | — |
| 2025-01-22 | THOMAS R STANTON | Chairman & CEO | F | — | — |
| 2025-01-22 | James Denson Jr Wilson | Chief Revenue Officer | F | — | — |
| 2025-01-15 | THOMAS R STANTON | Chairman & CEO | F | — | — |
| 2025-01-03 | H FENWICK HUSS | Director | A | — | — |
| 2025-01-03 | Hourigan Rice Jacqueline | Director | MIXED | — | — |
| 2025-01-03 | Nikos Theodosopoulos | Director | A | — | — |
| 2025-01-03 | Balan Nair | Director | A | — | — |
| 2025-01-03 | Kathryn A Walker | Director | A | — | — |
| 2025-01-03 | Gregory James McCray | Director | A | — | — |
| 2024-11-19 | THOMAS R STANTON | Chairman & CEO | F | — | — |
| 2024-11-19 | James Denson Jr Wilson | Chief Revenue Officer | F | — | — |
| 2024-10-15 | THOMAS R STANTON | Chairman & CEO | F | — | — |
| 2024-07-17 | THOMAS R STANTON | Chairman & CEO | F | — | — |
| 2024-07-16 | THOMAS R STANTON | Chairman & CEO | F | — | — |
| 2024-05-29 | Christoph Glingener | Chief Technology Officer | F | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Director | 4,998,800 | — |
| — | — | 2,526,146 | — |
| — | 10%+ Owner | 1,195,155 | — |
| — | Chairman & CEO | 1,126,553 | — |
| — | Director | 356,557 | — |
| — | Chief Revenue Officer | 147,523 | — |
| — | Director | 125,373 | — |
| — | Director | 107,600 | — |
| — | Chief Financial Officer | 107,237 | — |
| — | Director | 98,663 | — |
| — | Director | 91,785 | — |
| — | Director | 76,090 | — |
| — | Director | 72,892 | — |
| — | Director | 65,963 | — |
| — | Director | 63,876 | — |
| — | Director | 61,787 | — |
| — | Chief Technology Officer | 56,029 | — |
| — | SVP of Finance; CFO | 53,345 | — |
| — | SVP, Research & Development | 40,027 | — |
| — | Chief Financial Officer | 37,591 | — |
| — | President & COO | 28,648 | — |
| — | Chief Technology Officer | 23,254 | — |
| — | Chief Product Officer | 23,200 | — |
| — | Director | 19,652 | — |
| — | Sr VP - Finance, CFO | 17,250 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the ADTN quote page; the site-wide leaderboard is on the insider transactions hub.