ADTRAN Holdings's three largest insider shareholders as of April 25, 2026 are Thomas R Stanton (Chairman Ceo, 1.13Mn shares), Brian Protiva (Ceo Of Adva, 253.55K shares), James Denson Jr Wilson (Chief Revenue Officer, 152.61K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Thomas R Stanton | Chairman Ceo | 1,126,554 | 0 | 03 Apr, 2026 |
| Brian Protiva | Ceo Of Adva | 253,545 | 0 | 03 Jan, 2024 |
| James Denson Jr Wilson | Chief Revenue Officer | 152,609 | 0 | 03 Apr, 2026 |
| Balan Nair | - | 125,373 | 0 | 05 Jan, 2026 |
| Brian Protiva | Ceo Of Adva | 0 | 119,361 | 08 Dec, 2023 |
| H Fenwick Huss | - | 107,600 | 0 | 05 Jan, 2026 |
| Kathryn A Walker | - | 98,663 | 0 | 05 Jan, 2026 |
| Gregory James Mccray | - | 72,893 | 0 | 05 Jan, 2026 |
| Nikos Theodosopoulos | - | 65,963 | 0 | 05 Jan, 2026 |
| Roy J Nichols | - | 63,870 | 0 | 07 Sep, 2021 |
| Timothy P Santo | Svp Of Finance; Cfo | 53,345 | 0 | 03 Apr, 2026 |
| Ulrich Dopfer | Chief Financial Officer | 48,195 | 0 | 28 Jan, 2025 |
| Christoph Glingener | Chief Technology Officer | 46,645 | 0 | 28 Jan, 2025 |
| Eduard Scheiterer | Svp, Research Development | 40,027 | 0 | 02 Dec, 2021 |
| Johanna Hey | - | 8,294 | 0 | 21 Sep, 2023 |
| James Denson Jr Wilson | Chief Revenue Officer | 0 | 4,117 | 11 Jul, 2022 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 01 Apr, 2026 | Thomas R Stanton | Common Stock | A | 170,723 | $0.00 | 1,126,554 | D | A |
| 01 Apr, 2026 | James Denson Jr Wilson | Common Stock | A | 24,908 | $0.00 | 152,609 | D | A |
| 01 Apr, 2026 | Timothy P Santo | Common Stock | A | 28,252 | $0.00 | 53,345 | D | A |
| 19 Mar, 2026 | Timothy P Santo | Common Stock | D | 1,501 | $11.90 | 25,093 | D | F |
| 26 Jan, 2026 | James Denson Jr Wilson | Common Stock | D | 1,309 | $9.24 | 127,701 | D | F |
| 26 Jan, 2026 | James Denson Jr Wilson | Common Stock | A | 3,777 | $0.00 | 129,010 | D | A |
| 26 Jan, 2026 | Thomas R Stanton | Common Stock | A | 27,973 | $0.00 | 967,878 | D | A |
| 26 Jan, 2026 | Thomas R Stanton | Common Stock | D | 12,407 | $9.24 | 955,471 | D | F |
| 26 Jan, 2026 | James Denson Jr Wilson | Common Stock | D | 1,087 | $9.24 | 127,923 | D | F |
| 24 Jan, 2026 | Thomas R Stanton | Common Stock | D | 17,535 | $9.55 | 954,314 | D | F |
| 24 Jan, 2026 | James Denson Jr Wilson | Common Stock | D | 1,227 | $9.55 | 126,231 | D | F |
| 26 Jan, 2026 | Thomas R Stanton | Common Stock | D | 14,409 | $9.73 | 939,905 | D | F |
| 26 Jan, 2026 | James Denson Jr Wilson | Common Stock | D | 998 | $9.73 | 125,233 | D | F |
| 20 Jan, 2026 | Thomas R Stanton | Common Stock | D | 10,247 | $9.24 | 971,849 | D | F |
| 20 Jan, 2026 | James Denson Jr Wilson | Common Stock | D | 765 | $9.24 | 127,458 | D | F |
| 31 Dec, 2025 | Kathryn A Walker | Common Stock | A | 13,809 | $0.00 | 98,663 | D | A |
| 31 Dec, 2025 | Gregory James Mccray | Common Stock | A | 13,809 | $0.00 | 72,893 | D | A |
| 31 Dec, 2025 | Nikos Theodosopoulos | Common Stock | A | 13,809 | $0.00 | 65,963 | D | A |
| 31 Dec, 2025 | Balan Nair | Common Stock | A | 13,809 | $0.00 | 125,373 | D | A |
| 31 Dec, 2025 | H Fenwick Huss | Common Stock | A | 13,809 | $0.00 | 107,600 | D | A |