X0303 4 2010-12-14 0 0000936395 CIENA CORP CIEN 0001444157 Rothenstein David M 1201 WINTERSON ROAD LINTHICUM MD 21090 0 1 0 0 SVP, Gen. Counsel Common Stock 2010-12-14 4 A 0 38110 19.10 A 177921 D Common Stock 2010-12-14 4 A 0 9520 19.10 A 187441 D 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, 2011. Reflects Performance Stock Units (PSUs) for which the vesting is subject to the achievement of certain performance goals and an additional service period. Based upon the timing of achievement of the performance goals, the target amounts reported may increase by as much as an additional 70% of the grant amount reported above. Shares reported include unvested Restricted Stock Units (RSUs). By: Erik J. Lichter For: David M. Rothenstein 2010-12-16