| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| McCaffery Stephen J. | EVP, Global Sales | C/O RIBBON COMMUNICATIONS, 6500 CHASE OAKS BLVD., PLANO | Stephen J. McCaffery | 27 Oct 2025 | 0001690129 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | RBBN | Common Stock | 87,200 | 20 Oct 2025 | Direct |