SMITH GARY B 4

What Happened
Gary B. Smith, President, CEO and a director of Ciena Corp (CIEN), sold 2,952 shares in an open-market transaction on March 16, 2026. The filing reports a weighted-average sale price of $359.53, for total proceeds of approximately $1,061,325. This was a sale (S) and is typically viewed as routine insider selling rather than a purchase signal.

Key Details

• Transaction date: 2026-03-16; Form 4 filed: 2026-03-18 (appears timely within the 2-business-day requirement).
• Price: weighted average $359.53; sale prices ranged from $349.4950 to $366.5750 (filing footnote says full per-price breakdown will be provided to the SEC on request).
• Proceeds: ~$1,061,325 for 2,952 shares sold.
• Shares owned after transaction: Not specified in the provided summary; filing notes that reported ownership totals include unvested RSUs and PSUs.
• Notable footnotes: sale executed under a Rule 10b5-1 trading plan dated 10/04/2025 (F1); weighted-average/price-range disclosure (F2); ownership figures include unvested Restricted Stock Units and Performance Stock Units (F3).

Context
The sale was made under a pre-established 10b5-1 plan, which allows insiders to sell shares according to a predetermined schedule and is commonly used to avoid the appearance of trading on inside information. The filing is informational and does not, by itself, indicate the insider’s view of the company’s prospects.