Item 5. Market for Registrant’s Common Stock, Related Stockholder Matters and Issuer Purchases of Equity Securities

(a) Our common stock is traded on the New York Stock Exchange under the stock symbol “CIEN.”

As of December 5, 2025, there were approximately 600 holders of record of our common stock and 140,854,735 shares of common stock outstanding. We have never paid cash dividends on our capital stock. We currently intend to retain earnings for use in our business, and we do not anticipate paying any cash dividends in the foreseeable future.

Issuer Purchases of Equity Securities

The following table provides a summary of repurchases of our common stock during the fourth quarter of fiscal 2025:

(1) On October 2, 2024, we announced that our Board of Directors had authorized a program to repurchase up to $1.0 billion of our common stock, which replaced in its entirety the previous stock repurchase program. The program may be modified, suspended, or discontinued at any time. During the fourth quarter of fiscal 2025, we repurchased $84.5 million of our common stock under such stock repurchase program, and we had $670.3 million remaining under the current repurchase authorization as of November 1, 2025. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations­– Liquidity and Capital Resources – Stock Repurchase Authorization” in Item 7 of Part II of this annual report and Note 21 to our Consolidated Financial Statements included in Item 8 of Part II of this annual report for information regarding the stock repurchase programs authorized by our Board of Directors.

Stock Performance Graph

The following graph shows a comparison of cumulative total returns for an investment in our common stock, the S&P North American Technology-Multimedia Networking Index and the Russell 1000 Index from October 30, 2020 to October 31, 2025. The Russell 1000 Index comprises the stocks representing the 1,000 largest publicly traded American companies as measured by market capitalization. The S&P North American Technology-Multimedia Networking Index includes stocks in the S&P Total Market Index that are classified under the Global Industry Classification Standard communications equipment sub-industry. This graph is not deemed to be “soliciting material” or “filed” with the SEC or subject to the liabilities of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the graph shall not be deemed to be incorporated by reference into any prior or subsequent filing by us under the Securities Act of 1933, as amended, or the Exchange Act.

Comparison of 5-Year Cumulative Total Return Among Ciena Corporation,

the S&P North American Technology-Multimedia Networking Index and the Russell 1000 Index

The graph tracks the performance of a $100 investment in our common stock and in each of the indices on October 30, 2020 (with the subsequent reinvestment of all dividends at month end). This graph assumes $100 invested in Ciena Corporation, the Russell 1000 and the S&P North American Technology-Multimedia Networking Index, respectively, on October 30, 2020 with all dividends reinvested at month-end. Stockholder returns over the indicated period are based on historical data and should not be considered indicative of future stockholder returns.

(b) Not applicable.

(c) Not applicable.