CIENA Corp SVP David Rothenstein Sells 2,350 Shares for Tax Withholding at $428.22 per Share

David M. Rothenstein, SVP and Chief Strategy Officer of CIENA Corporation, filed a Form 4 disclosing the sale of 2,350 shares of common stock on June 20, 2026, at a price of $428.22 per share. The transactions were conducted to cover tax liabilities associated with the vesting of restricted stock units (RSUs) awarded in previous years (2022-2025). The sales were executed in five separate transactions: 679 shares, 204 shares, 811 shares, 436 shares, and 220 shares. Following these disposals, Rothenstein's total holdings decreased to 185,231 shares, which includes both vested shares and unvested RSUs/PSUs. The filing indicates these were mandatory tax withholding transactions rather than discretionary sales, with the shares being disposed of (code "D") through transaction code "F" (tax withholding).