Eric S. Marmurek

Companies

• Ribbon CommunicationsChief financial officer Oct 17, 2024 to now¹
• Ribbon CommunicationsPrincipal Accounting Officer Nov 6, 2017 to May 17, 2024²

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• RCRibbon Communications RBBN543,706 shares³$772.1K at $1.42May 15, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• May 15, 2026Shares withheld for tax 10,247 shares at $2.63 of Ribbon Communications³
• May 15, 2026Exercised options 26,043 shares of Ribbon Communications³
• May 15, 2026Shares withheld for tax 12,452 shares at $2.63 of Ribbon Communications³
• May 15, 2026Exercised options 31,646 shares of Ribbon Communications³
• May 15, 2026Shares withheld for tax 9,107 shares at $2.63 of Ribbon Communications³
• May 15, 2026Exercised options 23,146 shares of Ribbon Communications³
• Apr 17, 2026Shares withheld for tax 10,092 shares at $2.71 of Ribbon Communications³
• Apr 17, 2026Exercised options 25,651 shares of Ribbon Communications³
• Apr 17, 2026Shares withheld for tax 19,107 shares at $2.71 of Ribbon Communications³
• Apr 17, 2026Exercised options 48,328 shares of Ribbon Communications³
• Apr 15, 2026Shares withheld for tax 14,756 shares at $2.48 of Ribbon Communications⁴
• Apr 15, 2026Exercised options 37,500 shares of Ribbon Communications⁴
• Oct 15, 2025Shares withheld for tax 29,512 shares at $3.81 of Ribbon Communications⁵
• Oct 15, 2025Exercised options 75,000 shares of Ribbon Communications⁵
• May 16, 2025Shares withheld for tax 12,452 shares at $3.62 of Ribbon Communications⁶
• May 16, 2025Exercised options 31,645 shares of Ribbon Communications⁶
• Apr 18, 2025Shares withheld for tax 5,254 shares at $3.58 of Ribbon Communications⁷
• Apr 18, 2025Exercised options 13,354 shares of Ribbon Communications⁷
• Apr 17, 2025Shares withheld for tax 9,142 shares at $3.53 of Ribbon Communications⁷
• Apr 17, 2025Exercised options 23,234 shares of Ribbon Communications⁷
• Mar 15, 2025Exercised options 32,154 shares of Ribbon Communications⁸
• Mar 15, 2025Shares withheld for tax 7,321 shares at $3.95 of Ribbon Communications⁸
• Mar 15, 2025Exercised options 16,399 shares of Ribbon Communications⁸
• Oct 18, 2024Shares withheld for tax 5,255 shares at $3.56 of Ribbon Communications⁹
• Oct 18, 2024Exercised options 13,355 shares of Ribbon Communications⁹