CIENA CORP 4

Ciena Corp CFO Marc D. Graff sold 4,995 shares of CIEN common stock for about $2.15 million under a Rule 10b5-1 plan.

On August 14, 2026, Marc D. Graff, SVP & Chief Financial Officer of Ciena Corp, sold 4,995 shares of Ciena common stock in an open-market transaction under a Rule 10b5-1 trading plan at a weighted average price of approximately $430.72 per share, for proceeds of about $2.15 million. Following the sale, Graff beneficially owned 107,519 shares, which include unvested RSUs, representing an estimated post-transaction holding value of roughly $43.5 million based on the current market price of $404.50 per share. The sales were executed across a price range of $423.35 to $443.41, and full price breakdowns are available upon SEC request.

Filing Facts

CIK

936395

Ticker

CIEN

Form

4

Source Type

sec

Accession

0002080157-26-000010

Alert Tier

7