| 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 | 2025-11-19 | 0001191219 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ADTN | Common Stock | Tax liability | -$24.6K | -3.36K | -0.36% | $7.33 | 941K | Nov 17, 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Shares delivered to the Issuer for the payment of withholding taxes due upon the vesting of previously granted restricted stock units. |