Form 4 for RBBN Ribbon Communications Inc.
Accepted 2025-10-17 00:00:00 ET · period of report 2025-10-17 · accession 0001708055-25-000032 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2025-10-17 | 2025-10-17 | RBBN | Bucci Sam | EVP, COO | F - Tax | $3.81 | -13.8K | 448.8K | -3% | -$52.7K |
| D | 2025-10-17 | 2025-10-17 | RBBN | Bucci Sam | EVP, COO | M - OptEx | — | +25.8K | 462.6K | +6% | — |
| D | 2025-10-17 | 2025-10-17 | RBBN | Bucci Sam | EVP, COO | M - OptEx | $0.00 | -25.8K | 25.8K | -50% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-10-17 | F | D | 13,819 | $3.81 | 448,811 | D | — | — | (F2) Reflects shares of common stock withheld by the Registrant to satisfy tax withholding obligations in connection with the vesting. |
| 2 | Common | Common Stock | 2025-10-17 | M | A | 25,816 | — | 462,630 | D | — | — | (F1) Eash RSU represents a contingent right to receive one share of the Registrant's common stock. |
| 3 | Derivative | Restricted Stock Units (RSUs) | 2025-10-17 | M | D | 25,816 | $0.00 | 25,815 | D | — · — to — | 25,816 Common Stock | (F1) Eash RSU represents a contingent right to receive one share of the Registrant's common stock. (F3) The RSUs were granted on April 17, 2023 and vested as to one-third on April 17, 2024; the remaining two-thirds of the RSUs vest in four equal semi-annual installments thereafter through April 17, 2026. |