Ribbon (RBBN) SVP Eric Marmurek Exercises RSUs; Shares Withheld

What Happened
Eric S. Marmurek, SVP, Deputy CFO and CAO of Ribbon Communications, converted 37,500 restricted stock units (RSUs) into common shares on April 15, 2026. Of those shares, 14,756 were withheld by the company to satisfy tax withholding obligations at a value of $2.48 per share (total ~$36,595). Net shares delivered to Marmurek were 22,744 (37,500 converted minus 14,756 withheld). The conversion appears to be a routine RSU vesting/conversion rather than an open-market purchase or sale.

Key Details

• Transaction date: April 15, 2026; Form filed April 17, 2026 (appears timely — within standard Form 4 reporting window).
• Conversion: 37,500 RSUs converted into 37,500 common shares (reported as derivative conversion, code M).
• Withholding: 14,756 shares withheld for taxes at $2.48/share, value $36,595 (reported with code F).
• Net shares to insider: 22,744 shares.
• Shares owned after transaction: Not specified in the provided filing data.
• Relevant footnotes: F1 — each RSU equals one share; F2 — company withheld shares to cover tax withholding; F3 — RSUs were issued Oct 15, 2024, with remaining RSUs vesting Oct 15, 2026.

Context
This was a conversion/settlement of RSUs (no cash purchase); the withholding of shares for taxes is a common "sell-to-cover" mechanic and not an open-market sale. Such transactions are typically routine and reflect compensation vesting rather than a directional market signal.