Form 4: Ribbon Communications CFO Reports Stock Transaction
Insider Transaction (Form 4)
Eric S Marmurek, EVP, Chief Financial Officer of Ribbon Communications Inc., reported multiple transactions in common stock on October 15, 2026.
Summary
- Option exercise/conversion: acquired 37,500 Common Stock on October 15, 2026; holds 581,206 after (Direct).
- Tax/exercise-price withholding: disposed of 14,756 Common Stock at $1.46 ($21,544) on October 15, 2026; holds 566,450 after (Direct).
- Option exercise/conversion: disposed of 37,500 Restricted Stock Units (RSUs) on October 15, 2026 (Direct).
Sentiment
Score: 5
Explanation: StockSavvy.ai views this as routine: the reported changes are grants, option exercises, tax withholding or similar administrative transactions, which carry limited directional signal.
Insider Transactions
Eric S Marmurek — Officer (EVP, Chief Financial Officer)
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-10-15 | Option exercise/conversion | Common Stock | 37,500 | — | — | 581,206 |
| 2026-10-15 | Tax/exercise-price withholding | Common Stock | 14,756 | $1 | $21.5K | 566,450 |
| 2026-10-15 | Option exercise/conversion | Restricted Stock Units (RSUs) | 37,500 | — | — | 0 |
Key Dates
| Date | Description |
|---|---|
| 2026-10-15 | Option exercise/conversion (37,500 shares) |
| 2026-10-15 | Tax/exercise-price withholding (14,756 shares) |
| 2026-10-15 | Option exercise/conversion (37,500 shares) |
Keywords
insider transaction, Form 4, RBBN, Ribbon Communications Inc., neutral, Eric S Marmurek
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