Insiders who reported open-market trades in the last 12 months at the companies Dino Diperna files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Gary B. Smith - $26.78M in CIEN purchases and sales in the last 12 months
Jason Phipps - $16.48M in CIEN purchases and sales in the last 12 months
Dino Diperna is a corporate insider, tracked as EVP & Chief R&D Officer of CIENA CORP (CIEN). InsiderAlpha holds 15 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Dino Diperna submitted recently?
3 primary Form 4 filings in the last 90 days, covering 1 company.
Has Dino Diperna been buying or selling stock?
Recorded transactions: 0 open-market purchases and 16 open-market sales ($3.99M) across all tracked filings.
Dino Diperna is EVP & Chief R&D Officer of CIENA CORP (CIEN). 15 SEC Form 4 filings on record going back to 2024, most recently on 22 September 2026. Most recent open-market trade: sold $87K of CIEN on 17 September 2026. Lifetime open-market sales: $3.99M.
Recent transactions
20
The latest 20 SEC Form 4 transactions reported by Dino Diperna.
InsiderAlpha's records for Dino Diperna go back to 2024: 15 primary Form 4 filings, an average of 5.0 per year. 14 recorded transactions carry a Rule 10b5-1 plan flag. This identifies the marked transactions as reported under a trading plan; it does not establish the plan status of unmarked transactions.
