CIENA CORP 4

Ciena Corp CFO Marc D. Graff had 14,441 shares of common stock withheld to cover taxes on a vesting RSU award, leaving him with 112,514 shares owned.

On August 1, 2026, Ciena Corporation SVP & Chief Financial Officer Marc D. Graff had 14,441 shares of common stock withheld by the company at an implied price of approximately $377.05 per share, solely to satisfy tax obligations arising from a previously reported RSU award that vested on that date. This is a routine, non-open-market, tax-withholding transaction rather than a discretionary sale, and following the withholding Graff beneficially owned 112,514 shares (including unvested RSUs), which are worth an estimated $45.9 million based on the current market price. The underlying RSU grant itself was disclosed earlier and is not a new award in this filing.

Filing Facts

CIK

936395

Ticker

CIEN

Form

4

Source Type

sec

Accession

0002080157-26-000008

Alert Tier

5