SEC Filing Summary

Joseph Cumello, SVP, General Mgr. Blue Planet at CIENA CORP, reported the disposition of 1617 shares of Common Stock on June 20, 2026. These shares were disposed of at a price of $428.22 per share. The dispositions were due to shares withheld to cover tax liabilities related to restricted stock unit (RSU) award agreements dated 12/13/2022, 2/1/2023, 12/12/2023, 12/17/2024, and 12/16/2025. Following these transactions, Cumello directly owns 44,458 shares of Common Stock. The reported shares also include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).