Form 4 Filing for CIENA CORP - Officer Sale of Stock

This filing details a Form 4 submission for CIENA CORP (CIEN) concerning a transaction by Marc D. Graff, SVP & Chief Financial Officer. On July 1, 2026, Mr. Graff sold 126 shares of Common Stock at a price of $466.20 per share, pursuant to a Rule 10b5-1 trading plan initiated on March 25, 2026. This transaction resulted in a post-transaction holding of 126,955 shares. The reported shares include unvested Restricted Stock Units (RSUs). The filing was signed on July 6, 2026, by Michelle Rankin on behalf of Mr. Graff.