| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Graff Marc D. | SVP & Chief Financial Officer | C/O CIENA CORPORATION, 7035 RIDGE RD., HANOVER | By: Michelle Rankin For: Marc D. Graff | 05 Aug 2025 | 0002080157 |
No securities are beneficially owned.
Exhibit 24 - Power of Attorney