The Notes will be fully and unconditionally guaranteed, on a senior unsecured basis, by each wholly-owned domestic subsidiary of Ciena that currently or in the future guarantees its 4.00% senior notes due 2030 or any refinancing of such notes (the "guarantees"). The Company also intends to grant the initial purchasers of the Notes an option to purchase up to an additional $300.0 million aggregate principal amount of the Notes within a 13-day period beginning on, and including, the initial closing date of the Offering.

The Company intends to use a portion of the net proceeds from the Offering (i) to pay the net cost of the convertible note hedge transactions described below (after such cost is partially offset by the proceeds of the Company's entry into the warrant transactions described below) and (ii) to repurchase up to $140 million of shares of the Company's common stock pursuant to its existing stock repurchase program concurrently with the pricing of the Offering in privately negotiated transactions effected with or through one of the initial purchasers or its affiliate. The Company intends to use approximately $1.14 billion of the remaining net proceeds from the Offering to repay amounts outstanding under its term loan under its existing credit facility and pay related fees and expenses. The Company intends to use the remainder of the net proceeds for general corporate purposes, including investments to enhance supply chain capacity.