Updated Jul 16, 2026
Marmurek Eric S has filed 2 SEC Form 4 filings across 1 company in the last 90 days.

Eric S. Marmurek serves as the Senior Vice President, Deputy Chief Financial Officer, and Chief Accounting Officer at Ribbon Communications Inc. He has been involved in multiple SEC filings related to his role within the company.
| Role | EVP, Chief Financial Officer |
|---|---|
| Notability | 20/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-19 | RBBN | Ribbon Communications Inc. | F — Tax withholding / forfeiture | 10.2K | $2.63 | $27K |
| 2026-05-19 | RBBN | Ribbon Communications Inc. | M — Option exercise | 26.0K | — | |
| 2026-05-19 | RBBN | Ribbon Communications Inc. | F — Tax withholding / forfeiture | 12.5K | $2.63 | $33K |
| 2026-05-19 | RBBN | Ribbon Communications Inc. | M — Option exercise | 31.6K | — | |
| 2026-05-19 | RBBN | Ribbon Communications Inc. | F — Tax withholding / forfeiture | 9.1K | $2.63 | $24K |
| 2026-05-19 | RBBN | Ribbon Communications Inc. | M — Option exercise | 23.1K | — | |
| 2026-05-19 | RBBN | Ribbon Communications Inc. | F — Tax withholding / forfeiture | 10.1K | $2.71 | $27K |
| 2026-05-19 | RBBN | Ribbon Communications Inc. | M — Option exercise | 25.7K | — | |
| 2026-05-19 | RBBN | Ribbon Communications Inc. | F — Tax withholding / forfeiture | 19.1K | $2.71 | $52K |
| 2026-05-19 | RBBN | Ribbon Communications Inc. | M — Option exercise | 48.3K | — | |
| 2026-04-17 | RBBN | Ribbon Communications Inc. | F — Tax withholding / forfeiture | 14.8K | $2.48 | $37K |
| 2026-04-17 | RBBN | Ribbon Communications Inc. | M — Option exercise | 37.5K | — | |
| 2025-10-15 | RBBN | Ribbon Communications Inc. | F — Tax withholding / forfeiture | 29.5K | $3.81 | $112K |
| 2025-10-15 | RBBN | Ribbon Communications Inc. | M — Option exercise | 75.0K | — | |
| 2024-10-21 | RBBN | Ribbon Communications Inc. | F — Tax withholding / forfeiture | 5.3K | $3.56 | $19K |
| 2024-10-21 | RBBN | Ribbon Communications Inc. | M — Option exercise | 13.4K | — | |
| 2024-10-21 | RBBN | Ribbon Communications Inc. | F — Tax withholding / forfeiture | 9.1K | $3.38 | $31K |
| 2024-10-21 | RBBN | Ribbon Communications Inc. | M — Option exercise | 23.2K | — |
Eric S. Marmurek serves as the Senior Vice President, Deputy Chief Financial Officer, and Chief Accounting Officer at Ribbon Communications Inc. He has been involved in multiple SEC filings related to his role within the company.…
2 primary Form 4 filings in the last 90 days, covering 1 company.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Open the live Marmurek Eric S profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.