Dino Diperna sold $309K of CIEN stock

Dino Diperna, EVP & Chief R&D Officer of Ciena Corp (CIEN), sold 890 shares of CIEN stock worth $309K, per an SEC Form 4 filed Oct 19, 2026.

The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.

The trade happened on Oct 15, 2026, 4 days before it was made public.

CIEN has moved -24.4% since the trade date, from $356.52 to $269.41 (Nov 9, 2026 close).