Form 4 Filing for CIENA CORP

On December 20, 2025, Sheela Kosaraju, SVP and General Counsel of CIENA CORP, reported a disposition of 8,993 shares of Common Stock. The shares were disposed of at a price of $230.34 per share. These transactions were related to the withholding of shares to cover tax liabilities associated with various restricted stock unit (RSU) and performance stock unit (PSU) awards granted on different dates between December 13, 2022, and December 17, 2024. The footnotes indicate that the acquired RSUs were previously reported, and the reported shares include unvested RSUs and PSUs. Following these transactions, Kosaraju holds 98,261 shares of Common Stock, directly owned.