Form 4 Filing for CIENA CORP by Marc D. Graff

Marc D. Graff, EVP & Chief Financial Officer of CIENA CORP, reported a transaction on 2026-09-20. The transaction involved the disposal of 286 shares of Common Stock at a price of $348.8 per share. This disposal was to cover tax liabilities related to a restricted stock unit (RSU) award. Following this transaction, Mr. Graff owns 107,233 shares, which includes unvested RSUs. The acquisition of the RSUs was previously reported on 12/18/2025.