Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): | |||||||||||
| ☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) | ||||||||||
| ☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) | ||||||||||
| ☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) | ||||||||||
| ☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) | ||||||||||
| Securities registered pursuant to Section 12(b) of the Act: | ||||||||
Title of each class | Trading Symbol(s) | Name of each exchange on which registered | ||||||
Common stock, $0.01 par value | CIEN | New York Stock Exchange | ||||||
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. | ||
Ciena Corporation | ||||||||
Date: October 7, 2025 | By: | /s/ Sheela Kosaraju | ||||||
Sheela Kosaraju | ||||||||
Senior Vice President, General Counsel and Assistant Secretary | ||||||||