CIENA CORP

(26)COMMITMENTS AND CONTINGENCIES

Tax Contingencies

Ciena is subject to various tax liabilities arising in the ordinary course of business. Ciena does not expect that the ultimate settlement of these tax liabilities will have a material effect on its results of operations, financial position or cash flows.

Litigation

Ciena is subject to various legal proceedings, claims and other matters arising in the ordinary course of business, including those that relate to employment, commercial, tax and other regulatory matters. Ciena is also subject to intellectual property related claims, including claims against third parties that may involve contractual indemnification obligations on the part of Ciena. Ciena does not expect that the ultimate costs to resolve such matters will have a material effect on its results of operations, financial position or cash flows.

Purchase Order Obligations

Ciena has certain advanced orders for supply of certain long lead time components. As of November 1, 2025, Ciena had $2.1 billion in outstanding purchase order commitments to contract manufacturers and component suppliers for inventory. In certain instances, Ciena is permitted to cancel, reschedule or adjust these orders. Consequently, only a portion of this amount relates to firm, non-cancelable and unconditional obligations.

(27)SUBSEQUENT EVENTS

Stock Repurchase Program

From the end of the fourth quarter of fiscal 2025 through December 5, 2025, Ciena repurchased 162,347 shares of its common stock for an aggregate purchase price of $31.7 million at an average price of $195.12 per share, inclusive of repurchases pending settlement under its current stock repurchase program. As of December 5, 2025, Ciena has an aggregate of $638.6 million of authorized funds remaining under this repurchase program.