X0306 4 2022-12-13 0 0000936395 CIENA CORP CIEN 0001177261 ALEXANDER STEPHEN B C/O CIENA CORPORATION 7035 RIDGE RD. HANOVER MD 21076-1426 0 1 0 0 SVP, Chief Technology Officer Common Stock 2022-12-13 4 A 0 5236 0.00 A 68000 D Common Stock 2022-12-13 4 M 0 4057 A 72057 D Common Stock 2022-12-13 4 A 0 12144 0.00 A 84201 D Market Stock Units (2022) 0.00 2022-12-13 4 M 0 5879 0.00 D Common Stock 5879 0 D Reflects the number of stock units earned pursuant to the terms of a performance stock unit (PSU) award granted on December 14, 2021 reflecting the achievement of the related performance conditions. These shares vest in equal 1/2 amounts on each of December 20, 2022 and 2023. Shares reported include unvested Restricted Stock Units (RSUs), Performance Stock Units (PSUs), and Market Stock Units (MSUs). Reflects the number of stock units earned pursuant to the terms of a market stock unit (MSU) award granted on December 17, 2019 reflecting the level of achievement of the applicable total shareholder return (TSR) performance conditions. These shares vest on December 20, 2022 Each MSU will convert on the vesting date into common stock pursuant to the terms of the MSU award. Reflects Restricted Stock Units (RSUs) that vest over four years, with one-sixteenth of the grant amount vesting on March 20, June 20, September 20, and December 20 of each year, commencing on March 20, 2023. Each MSU represents the contingent right to receive, following vesting, between 0% and 200% of one share of the Issuer's common stock, subject to the level of achievement of applicable TSR performance conditions over a three-year period from fiscal 2020 through fiscal 2022. By: Michelle Rankin For: Stephen B Alexander 2022-12-15