Eric S Marmurek
CIK 1720721 · EVP, Chief Financial Officer · last filed 2026-05-19
Eric S Marmurek is an EVP, Chief Financial Officer who has filed 44 SEC Form 4 insider transactions across 2 companies since 2017. The most recent filing, for RBBN, was dated May 19, 2026. Across all open-market trades the lifetime net is −$81.9K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.4M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$1.39M
2
44
-$81.9K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| RBBN | EVP, Chief Financial Officer | 517,823 | $2.69 | $1.39M | -$81.9K | 43 | 2026-05-19 |
| Ribbon Communications Inc. (SONS) Delisted | Principal Accounting Officer | 29,148 | — | — | $0 | 1 | 2017-11-17 |
Recent Filings
44 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-19 | RBBN | Mixed | +93,809 | -$162.8K | EDGAR |
| 2026-04-17 | RBBN | Mixed | +22,744 | -$36.6K | EDGAR |
| 2025-12-16 | RBBN | Grant (A) | — | $0 | EDGAR |
| 2025-10-17 | RBBN | Mixed | +45,488 | -$112.4K | EDGAR |
| 2025-05-19 | RBBN | Mixed | +19,193 | -$45.1K | EDGAR |
| 2025-04-22 | RBBN | Mixed | +22,192 | -$51.1K | EDGAR |
| 2025-03-18 | RBBN | Mixed | +28,300 | -$80.0K | EDGAR |
| 2024-10-21 | RBBN | Mixed | +22,192 | -$49.6K | EDGAR |
| 2024-10-17 | RBBN | Grant (A) | — | $0 | EDGAR |
| 2024-05-17 | RBBN | Grant (A) | — | $0 | EDGAR |