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Ribbon Communications Inc. (RBBN)
NASDAQ: RBBN · Real-Time Price · USD
Technology · Software - Application
1.36-0.04 (-2.86%)
Insider Score
––Not scored
RBBN Insider Score
Insiders here have filed 5 Form 4s in the last 90 days, but all of them are share awards, grants or other non-market transactions. Those are compensation, not a decision to buy, so they are not scored.
RBBN Stock Insider Trading Activity
RBBN stock’s insider trading shows no open-market insider trades by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Marmurek Eric S CFO | Option exercise | 37,500 | — | — | 6.9% | 581,206 | Oct 15, 2026 | — | Form 4 |
| Marmurek Eric S CFO | Tax withheld | 14,756 | $1.46 | $21.54K | 2.5% | 566,450 | Oct 15, 2026 | — | Form 4 |
| GRAYSON BRUNS H Director | Award | 19,176 | — | — | 2.3% | 859,446 | Oct 15, 2026 | — | Form 4 |
| SHANI SHAUL Director | Award | 15,625 | — | — | 6.6% | 253,343 | Oct 15, 2026 | — | Form 4 |
| SHANI SHAUL Director | Option exercise | 185,210 | — | — | 73.1% | 438,553 | Oct 15, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Award (A) — Grant or award from the company, not a purchase
- Tax withheld (F) — Shares withheld to pay tax or an exercise price
- Option exercise (M) — Exercise or conversion of an exempt derivative
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.