As of the latest Form 4 filed Jun 17, 2026.
What Ribbon Communications Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Newest filing first — the 12 most recent filings for RBBN.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-06-17 | 2026-06-16 | Tamone Tanya Director | MExercise | +42.5K | — | — | No | Form 4 ↗ |
| 2026-06-17 | 2026-06-16 | Mair Scott Director | MExercise | +67.5K | — | — | No | Form 4 ↗ |
| 2026-06-17 | 2026-06-16 | SHANI SHAUL Director | MExercise | +42.5K | — | — | No | Form 4 ↗ |
| 2026-06-17 | 2026-06-16 | INFANTE BEATRIZ V Director | MExercise | +42.5K | — | — | No | Form 4 ↗ |
| 2026-06-17 | 2026-06-16 | GRAYSON BRUNS H Director | MExercise | +42.5K | — | — | No | Form 4 ↗ |
| 2026-06-17 | 2026-06-16 | EWING R STEWART JR Director | MExercise | +42.5K | — | — | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Townsend John Raymond EVP, Chief Financial Officer | FTax | −10.1K | $2.48 | $25.0K | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Townsend John Raymond, EVP, Chief Financial Officer | MExercise | +25.6K | — | — | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | GRAYSON BRUNS H Director | AAward | +15.9K | — | — | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Marmurek Eric S SVP, Deputy CFO and CAO | FTax | −14.8K | $2.48 | $36.6K | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Marmurek Eric S, SVP, Deputy CFO and CAO | MExercise | +37.5K | — | — | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | SHANI SHAUL Director | AAward | +13.0K | — | — | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also RBBN’s full analysis or the market-wide insider trading feed. The tabs above jump to RBBN’s other SEC data.
Source: SEC Form 4 filings for RBBN, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
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