Form 4 Filing for CIENA CORP

This filing details transactions made by Phipps Jason, SVP Global Sales and Marketing at CIENA CORP, on June 20, 2026. The transactions involved the disposal of Common Stock, with 735 shares disposed at a price of $428.22 per share, leaving 66,642 shares. Another transaction involved 859 shares disposed at $428.22 per share, resulting in 65,783 shares. Additionally, 504 shares were disposed of at $428.22 per share, with 65,279 shares remaining. Finally, 268 shares were disposed of at $428.22 per share, leaving 65,011 shares. These disposals were related to covering tax liabilities for restricted stock unit (RSU) and performance stock unit (PSU) awards granted in previous years, as indicated by footnotes F1 through F5. The reporting owner, Phipps Jason, maintains indirect ownership of the remaining shares.