ADTN insider buying – ADTRAN Holdings, Inc.
11 insider purchases since 2016 worth $1.7M by 6 different insiders. Last 12 months: 6 purchases, $1.3M. Most recent filing: 2026-11-12.
Mid company Public float $706M (latest 10-K, SEC).
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits. 3 older purchases (before the 5-year window) are listed in the table below.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| STANTON THOMAS R Chairman & CEO, Director | $1.1M 4× · 231,580 sh | 2022-12-07 2026-11-09 | – | 1,126,554 shares as of 2026-04-03 | Holds - never sold |
| Nair Balan Director | $191,894 2× · 14,773 sh | 2019-11-07 2021-11-09 | – | 125,373 shares as of 2026-01-05 | Holds - never sold |
| Whalen Daniel T Officer | $177,440 1× · 20,000 sh | 2020-02-14 2020-02-14 | – | 29,700 shares as of 2020-02-19 | Holds - never sold |
| Theodosopoulos Nikos Director | $100,429 1× · 12,859 sh | 2025-11-26 2025-11-26 | – | 65,963 shares as of 2026-01-05 | Holds - never sold |
| Santo Timothy P CFO | $99,323 2× · 12,729 sh | 2025-11-28 2026-08-06 | – | 59,924 shares as of 2026-08-07 | Holds - never sold |
| Kimpe Marc Officer | $27,060 1× · 3,000 sh | 2019-11-25 2019-11-25 | 1× · $100,100 last 2022-02-24 | 0 shares as of 2022-07-08 | Sold everything |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 3 | $822,820 | 2 | 3 | $2.5M |
| 2025 | 3 | $449,754 | 3 | – | – |
| 2022 | 1 | $12,529 | 1 | 2 | $753,085 |
| 2021 | 1 | $99,994 | 1 | – | – |
| 2020 | 1 | $177,440 | 1 | 1 | $218,488 |
| 2019 | 2 | $118,960 | 2 | 3 | $218,392 |
| 2017 | 0 | – | – | 3 | $1.8M |
| 2016 | 0 | – | – | 1 | $524,059 |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2026-11-12 | STANTON THOMAS R | Chairman & CEO, Director | 40,000 | $4.30 | $171,920 | +3% | SEC |
| 2026-11-09 | STANTON THOMAS R | Chairman & CEO, Director | 150,000 | $4.01 | $600,900 | +12% | SEC |
| 2026-08-07 | Santo Timothy P | CFO | 6,579 | $7.60 | $50,000 | +12.3% | SEC |
| 2025-12-01 | Santo Timothy P | CFO | 6,150 | $8.02 | $49,323 | +30.1% | SEC |
| 2025-12-01 | Theodosopoulos Nikos | Director | 12,859 | $7.81 | $100,429 | +32.7% | SEC |
| 2025-11-25 | STANTON THOMAS R | CEO | 40,928 | $7.33 | $300,002 | +4.3% | SEC |
| 2022-12-09 | STANTON THOMAS R | CEO | 652 | $19.21 | $12,529 | +0.1% | SEC |
| 2021-11-12 | Nair Balan | Director | 4,773 | $20.95 | $99,994 | +7.3% | SEC |
| 2020-02-19 | Whalen Daniel T | Officer | 20,000 | $8.87 | $177,440 | +206.2% | SEC |
| 2019-11-25 | Kimpe Marc | Officer | 3,000 | $9.02 | $27,060 | +18.6% | SEC |
| 2019-11-07 | Nair Balan | Director | 10,000 | $9.19 | $91,900 | +25.3% | SEC |
Insider sales
| Filed | Insider | Role | Shares | Avg price | Value | Type | Filing |
|---|---|---|---|---|---|---|---|
| 2026-05-22 | Wilson James Denson Jr | Officer | 9,332 | $14.72 | $137,367 | Sale | SEC |
| 2026-05-11 | Glingener Christoph | Officer | 148,392 | $14.96 | $2.2M | Sale | SEC |
| 2026-03-05 | Jacqueline Hourigan Rice | Director | 14,406 | $10.29 | $148,238 | Sale | SEC |
| 2022-08-25 | Protiva Brian | CEO | 26,501 | $24.64 | $652,985 | Sale | SEC |
| 2022-03-01 | Kimpe Marc | Officer | 5,000 | $20.02 | $100,100 | Sale | SEC |
| 2020-03-09 | NICHOLS ROY J | Director | 12,485 | $17.50 | $218,488 | Sale | SEC |
| 2019-10-17 | Shannon Roger D | Officer | 6,200 | $9.71 | $60,202 | Sale | SEC |
| 2019-04-25 | Wilson James Denson Jr | Officer | 3,269 | $17.61 | $57,567 | Sale | SEC |
| 2019-04-25 | Shannon Roger D | Officer | 5,701 | $17.65 | $100,623 | Sale | SEC |
| 2017-10-25 | Heering Kevin P. | Officer | 9,809 | $21.60 | $211,874 | Sale | SEC |
| 2017-10-25 | Schansman Raymond R | Officer | 48,056 | $21.70 | $1.0M | Sale | SEC |
| 2017-07-26 | Foliano Michael | Officer | 24,000 | $23.77 | $570,457 | Sale | SEC |
| 2016-11-21 | Wilson James Denson Jr | Officer | 26,295 | $19.93 | $524,059 | Sale | SEC |
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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