Ciena Corporation Earnings Presentation

Delivering consistent financial performance 1.60 1.40 1.20 1.00 0.80 2016 Normalized Revenue 2017 Ciena 2018 Peer Avg 2019 2020 2021 Copyright Ciena Corporation 2021. All rights reserved. Proprietary information. 2.50 2.00 1.50 1.00 0.50 0.00 Source: Company filings Peer Average: ACIA¹, ADTN, ADVA, ANET, CSCO, INFN2, JNPR and NOKIA Infrastructure segment *FY 2021 includes Q4 consensus for industry average and midpoint of Ciena's Q1 FY22 guide 1. ACIA has been removed from the list since 2021 after acquisition 2. INFN represents INFN+ Coriant from the time the acquisition closed 2016 Normalized Adjusted OM Peer Avg 2017 Ciena 2018 2019 2020 2021 ciena 18

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