Marmurek Eric S 4
4 · Ribbon Communications Inc. · Filed Oct 17, 2025
Insider Transaction Report
Form 4
Marmurek Eric S
SVP, Deputy CFO and CAO
Transactions
- Tax Payment
Common Stock
2025-10-15$3.81/sh−29,512$112,441→ 427,063 total - Exercise/Conversion
Restricted Stock Units (RSUs)
2025-10-15−75,000→ 75,000 total→ Common Stock (75,000 underlying) - Exercise/Conversion
Common Stock
2025-10-15+75,000→ 456,575 total
Footnotes (3)
- [F1]Eash RSU represents a contingent right to receive one share of the Registrant's common stock.
- [F2]Reflects shares of common stock withheld by the Registrant to satisfy tax withholding obligations in connection with the vesting.
- [F3]The RSUs were issued on October 15, 2024 and vested as to 50% on October 15, 2025. The remaining 50% of the RSUs vest in two equal semi-annual installments thereafter through October 15, 2026.