| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| STANTON THOMAS R | Chairman & CEO, Director | C/O ADTRAN HOLDINGS, INC., 901 EXPLORER BOULEVARD, HUNTSVILLE | /s/ Dan Ragsdale, by power of attorney | 28 Jan 2026 | 0001191219 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ADTN | Common Stock | Award | $0 | +27,973 | +3% | $0.000000 | 967,878 | 26 Jan 2026 | Direct | F1 |
| transaction | ADTN | Common Stock | Tax liability | $114,641 | -12,407 | -1.3% | $9.24 | 955,471 | 26 Jan 2026 | Direct | F2 |
| Id | Content |
|---|---|
| F1 | These shares represent the vesting of performance stock units that were awarded pursuant to a grant on January 20, 2023 under the Amended and Restated ADTRAN Holdings, Inc. 2020 Employee Stock Incentive Plan. |
| F2 | Shares delivered to the Issuer for the payment of withholding taxes due upon the vesting of previously granted performance stock units. |