Eric S. Marmurek
Known title: SVP, Finance & CAOCIK: 0001720721
Associated companies
Transaction History
| RBBN | ▲ Buy | Option Exercise | 31,646 | — | 5/15/2026 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 12,452 | $33K | 5/15/2026 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 26,043 | — | 5/15/2026 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 23,146 | — | 5/15/2026 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 9,107 | $24K | 5/15/2026 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 10,247 | $27K | 5/15/2026 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 48,328 | — | 4/17/2026 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 19,107 | $52K | 4/17/2026 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 25,651 | — | 4/17/2026 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 10,092 | $27K | 4/17/2026 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 37,500 | — | 4/15/2026 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 14,756 | $37K | 4/15/2026 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 75,000 | — | 10/15/2025 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 29,512 | $112K | 10/15/2025 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 31,645 | — | 5/16/2025 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 12,452 | $45K | 5/16/2025 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 5,254 | $19K | 4/18/2025 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 13,354 | — | 4/18/2025 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 9,142 | $32K | 4/17/2025 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 23,234 | — | 4/17/2025 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 16,399 | — | 3/15/2025 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 7,321 | $29K | 3/15/2025 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 32,154 | — | 3/15/2025 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 5,255 | $19K | 10/18/2024 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 13,355 | — | 10/18/2024 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 9,142 | $31K | 10/17/2024 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 23,234 | — | 10/17/2024 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 13,354 | — | 4/18/2024 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 4,895 | $13K | 4/18/2024 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 46,469 | — | 4/17/2024 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 17,069 | $45K | 4/17/2024 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 4,116 | — | 3/15/2024 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 1,581 | — | 3/15/2024 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 1,554 | $4K | 3/15/2024 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 12,932 | $51K | 3/15/2024 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 15,000 | $0 | 1/18/2024 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 4,447 | $13K | 1/18/2024 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 13,355 | $0 | 10/18/2023 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 3,251 | $7K | 10/18/2023 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 4,117 | $0 | 9/15/2023 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 1,002 | $3K | 9/15/2023 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 48,231 | $0 | 6/16/2023 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 11,744 | $35K | 6/16/2023 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 26,710 | $0 | 4/18/2023 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 6,503 | $18K | 4/18/2023 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 15,432 | — | 3/16/2023 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 3,730 | $13K | 3/16/2023 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 3,392 | $13K | 3/15/2023 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 4,116 | — | 3/15/2023 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 1,220 | $5K | 3/15/2023 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 11,442 | — | 3/15/2023 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 18,307 | — | 3/15/2023 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 4,819 | $18K | 3/15/2023 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 15,432 | — | 9/16/2022 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 3,757 | $11K | 9/16/2022 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 4,117 | — | 9/15/2022 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 1,002 | $3K | 9/15/2022 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 1,474 | $5K | 4/15/2022 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 6,056 | — | 4/15/2022 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 15,432 | — | 3/16/2022 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 3,663 | $11K | 3/16/2022 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 8,234 | — | 3/15/2022 | View on chart |
| RBBN | ▲ Buy | Grant | 11,301 | — | 3/15/2022 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 11,047 | — | 3/15/2022 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 8,386 | $24K | 3/15/2022 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 6,056 | — | 10/15/2021 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 1,474 | $9K | 10/15/2021 | View on chart |
| RBBN | ▲ Buy | Option Exercise | 15,432 | — | 9/16/2021 | View on chart |
| RBBN | ▼ Sell | Tax Withholding | 3,757 | $24K | 9/16/2021 | View on chart |
AI Market Commentary
AI-generatedAll commentary →Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
October 9, 2026
Ribbon Reports Major Infrastructure Milestone in North America
Ribbon Communications announced a significant milestone in modernizing critical infrastructure across North America's largest transportation network. This development highlights the company's ongoing operational progress in the communications sector. The news provides context for the stock's current valuation, which sits near the lower end of its 52-week range.
Ribbon Reports Major Infrastructure Milestone in North America. Ribbon Communications announced a significant milestone in modernizing critical infrastructure across North America's largest transportation network. This development highlights the company's ongoing operational progress in the communications sector. The news provides context for the stock's current valuation, which sits near the lower end of its 52-week range.