Marmurek Eric S has filed 76 insider transactions across 1 company since January 2023.
Most recent transaction: a grant/award of 169721 shares of Ribbon Communications Inc. ($RBBN) on December 15, 2025.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec. 15, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Deputy CFO and CAO | A | Restricted Stock Units (RSUs) | 169721 | $0.00 | 169,721.0000 | 176,620,000 | 50.00% | 0.10% |
| Oct. 15, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Deputy CFO and CAO | M | Common Stock | 75000 | $0.00 | 456,575.0000 | 176,620,000 | 19.66% | 0.04% |
| Oct. 15, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Deputy CFO and CAO | M | Restricted Stock Units (RSUs) | 75000 | $0.00 | 75,000.0000 | 176,620,000 | 50.00% | 0.04% |
| Oct. 15, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Deputy CFO and CAO | F | Common Stock | 29512 | $3.81 | 427,063.0000 | 176,620,000 | 6.46% | 0.02% |
| May 15, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | A | Performance-Based RSUs (PSUs) | 46875 | $0.00 | 46,875.0000 | 175,719,000 | 9999.99% | 0.03% |
| May 15, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | A | PSUs | 31250 | $0.00 | 31,250.0000 | 175,719,000 | 9999.99% | 0.02% |
| May 15, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | A | PSUs | 36392 | $0.00 | 36,392.0000 | 175,719,000 | 9999.99% | 0.02% |
| May 16, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | M | RSUs | 31645 | $0.00 | 0.0000 | 175,719,000 | 100.00% | 0.02% |
| May 16, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | F | Common Stock | 12452 | $3.62 | 381,575.0000 | 175,719,000 | 3.16% | 0.01% |
| May 15, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | A | Restricted Stock Units (RSUs) | 78125 | $0.00 | 78,125.0000 | 175,719,000 | 9999.99% | 0.04% |
| May 16, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | M | Common Stock | 31645 | $0.00 | 394,027.0000 | 175,719,000 | 8.73% | 0.02% |
| May 15, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | A | RSUs | 63291 | $0.00 | 63,291.0000 | 175,719,000 | 9999.99% | 0.04% |
| April 17, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | M | Restricted Stock Units (RSUs) | 23234 | $0.00 | 0.0000 | 175,719,000 | 100.00% | 0.01% |
| April 18, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | M | RSUs | 13354 | $0.00 | 0.0000 | 175,719,000 | 100.00% | 0.01% |
| April 17, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | M | Common Stock | 23234 | $0.00 | 363,424.0000 | 175,719,000 | 6.83% | 0.01% |
| April 17, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | F | Common Stock | 9142 | $3.53 | 354,282.0000 | 175,719,000 | 2.52% | 0.01% |
| April 18, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | M | Common Stock | 13354 | $0.00 | 367,636.0000 | 175,719,000 | 3.77% | 0.01% |
| April 18, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | F | Common Stock | 5254 | $3.58 | 362,382.0000 | 175,719,000 | 1.43% | 0.00% |
| March 15, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | M | Performance-Based Restricted Stock Units (PSUs) | 16399 | $0.00 | 0.0000 | 174,044,000 | 100.00% | 0.01% |
| March 15, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | M | PSUs | 32154 | $0.00 | 0.0000 | 174,044,000 | 100.00% | 0.02% |
| March 15, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | M | Common Stock | 16399 | $0.00 | 328,289.0000 | 174,044,000 | 5.26% | 0.01% |
| March 15, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | F | Common Stock | 7321 | $3.95 | 320,968.0000 | 174,044,000 | 2.23% | 0.00% |
| March 15, 2025 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | M | Common Stock | 32154 | $0.00 | 353,122.0000 | 174,044,000 | 10.02% | 0.02% |
| March 15, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, CAO & Deputy CFO | F | Common Stock | 12932 | $3.95 | 340,190.0000 | 172,990,000 | 3.66% | 0.01% |
| Oct. 17, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Deputy CFO & CAO | M | Restricted Stock Units (RSUs) | 23234 | $0.00 | 23,234.0000 | 174,613,000 | 50.00% | 0.01% |
| Oct. 18, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Deputy CFO & CAO | M | RSUs | 13355 | $0.00 | 13,354.0000 | 174,613,000 | 50.00% | 0.01% |
| Oct. 17, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Deputy CFO & CAO | M | Common Stock | 23234 | $0.00 | 312,932.0000 | 174,613,000 | 8.02% | 0.01% |
| Oct. 17, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Deputy CFO & CAO | F | Common Stock | 9142 | $3.38 | 303,790.0000 | 174,613,000 | 2.92% | 0.01% |
| Oct. 18, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Deputy CFO & CAO | M | Common Stock | 13355 | $0.00 | 317,145.0000 | 174,613,000 | 4.40% | 0.01% |
| Oct. 18, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Deputy CFO & CAO | F | Common Stock | 5255 | $3.56 | 311,890.0000 | 174,613,000 | 1.66% | 0.00% |
| Oct. 15, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Deputy CFO & CAO | A | Restricted Stock Units (RSUs) | 150000 | $0.00 | 150,000.0000 | 174,613,000 | 9999.99% | 0.09% |
| May 15, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | A | Restricted Stock Units (RSUs) | 31645 | $0.00 | 31,645.0000 | 172,428,000 | 9999.99% | 0.02% |
| May 15, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | A | Performance-Based RSUs (PSUs) | 43670 | $0.00 | 43,670.0000 | 172,428,000 | 9999.99% | 0.03% |
| May 15, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | A | PSUs | 29114 | $0.00 | 29,114.0000 | 172,428,000 | 9999.99% | 0.02% |
| April 17, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Restricted Stock Units (RSUs) | 46469 | $0.00 | 46,468.0000 | 172,428,000 | 50.00% | 0.03% |
| April 17, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Common Stock | 46469 | $0.00 | 298,308.0000 | 172,428,000 | 18.45% | 0.03% |
| April 18, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | RSUs | 13354 | $0.00 | 26,709.0000 | 172,428,000 | 33.33% | 0.01% |
| April 17, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | F | Common Stock | 17069 | $2.61 | 281,239.0000 | 172,428,000 | 5.72% | 0.01% |
| April 18, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Common Stock | 13354 | $0.00 | 294,593.0000 | 172,428,000 | 4.75% | 0.01% |
| April 18, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | F | Common Stock | 4895 | $2.57 | 289,698.0000 | 172,428,000 | 1.66% | 0.00% |
| March 15, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | F | Common Stock | 1554 | $2.83 | 251,839.0000 | 172,990,000 | 0.61% | 0.00% |
| March 15, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Common Stock | 4116 | $0.00 | 251,812.0000 | 172,990,000 | 1.66% | 0.00% |
| March 15, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Common Stock | 1581 | $0.00 | 253,393.0000 | 172,990,000 | 0.63% | 0.00% |
| March 15, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Restricted Stock Units (RSUs) | 4116 | $0.00 | 0.0000 | 172,990,000 | 100.00% | 0.00% |
| March 15, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Performance-Based Restricted Stock Units | 1581 | $0.00 | 0.0000 | 172,990,000 | 100.00% | 0.00% |
| Jan. 18, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Restricted Stock Units (RSUs) | 15000 | $0.00 | 0.0000 | 172,990,000 | 100.00% | 0.01% |
| Jan. 18, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | F | Common Stock | 4447 | $2.84 | 247,696.0000 | 172,990,000 | 1.76% | 0.00% |
| Jan. 18, 2024 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Common Stock | 15000 | $0.00 | 252,143.0000 | 172,990,000 | 6.33% | 0.01% |
| Oct. 18, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | F | Common Stock | 3251 | $2.15 | 237,143.0000 | 171,190,000 | 1.35% | 0.00% |
| Oct. 18, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Restricted Stock Units (RSUs) | 13355 | $0.00 | 40,063.0000 | 171,190,000 | 25.00% | 0.01% |
| Oct. 18, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Common Stock | 13355 | $0.00 | 240,394.0000 | 171,190,000 | 5.88% | 0.01% |
| Sept. 15, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | F | Common Stock | 1002 | $2.83 | 227,039.0000 | 170,103,000 | 0.44% | 0.00% |
| Sept. 15, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Restricted Stock Units (RSUs) | 4117 | $0.00 | 4,117.0000 | 170,103,000 | 50.00% | 0.00% |
| Sept. 15, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Common Stock | 4117 | $0.00 | 228,041.0000 | 170,103,000 | 1.84% | 0.00% |
| June 16, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | F | Common Stock | 11744 | $2.96 | 223,005.0000 | 168,541,000 | 5.00% | 0.01% |
| June 16, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Restricted Stock Units (RSUs) | 48231 | $0.00 | 0.0000 | 168,541,000 | 100.00% | 0.03% |
| June 16, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Common Stock | 48231 | $0.00 | 234,749.0000 | 168,541,000 | 25.86% | 0.03% |
| April 18, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | F | Common Stock | 6503 | $2.74 | 186,518.0000 | 168,541,000 | 3.37% | 0.00% |
| April 18, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Restricted Stock Units (RSUs) | 26710 | $0.00 | 53,418.0000 | 168,541,000 | 33.33% | 0.02% |
| April 17, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | A | RSUs | 92937 | $0.00 | 92,937.0000 | 168,541,000 | 9999.99% | 0.06% |
| April 17, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | A | Performance-Based RSUs (PSUs) | 55762 | $0.00 | 55,762.0000 | 168,541,000 | 9999.99% | 0.03% |
| April 17, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | A | PSUs | 37175 | $0.00 | 37,175.0000 | 168,541,000 | 9999.99% | 0.02% |
| April 18, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Common Stock | 26710 | $0.00 | 193,021.0000 | 168,541,000 | 16.06% | 0.02% |
| March 15, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Common Stock | 4116 | $0.00 | 134,291.0000 | 172,213,000 | 3.16% | 0.00% |
| March 15, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Common Stock | 11442 | $0.00 | 144,513.0000 | 172,213,000 | 8.60% | 0.01% |
| March 15, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | F | Common Stock | 3392 | $3.71 | 141,121.0000 | 172,213,000 | 2.35% | 0.00% |
| March 15, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Common Stock | 18307 | $0.00 | 159,428.0000 | 172,213,000 | 12.97% | 0.01% |
| March 15, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | F | Common Stock | 4819 | $3.71 | 154,609.0000 | 172,213,000 | 3.02% | 0.00% |
| March 16, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Common Stock | 15432 | $0.00 | 170,041.0000 | 172,213,000 | 9.98% | 0.01% |
| March 16, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | F | Common Stock | 3730 | $3.54 | 166,311.0000 | 172,213,000 | 2.19% | 0.00% |
| March 15, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Restricted Stock Units (RSUs) | 4116 | $0.00 | 8,233.0000 | 172,213,000 | 33.33% | 0.00% |
| March 15, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | Performance-Based Restricted Stock Units | 11442 | $0.00 | 0.0000 | 172,213,000 | 100.00% | 0.01% |
| March 15, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | PSUs | 18307 | $0.00 | 0.0000 | 172,213,000 | 100.00% | 0.01% |
| March 16, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | M | RSUs | 15432 | $0.00 | 0.0000 | 172,213,000 | 100.00% | 0.01% |
| March 15, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | F | Common Stock | 1220 | $3.71 | 133,071.0000 | 172,213,000 | 0.91% | 0.00% |
| Jan. 17, 2023 | Ribbon Communications Inc. | $RBBN | Marmurek Eric S | SVP, Finance & CAO | A | Restricted Stock Units (RSUs) | 15000 | $0.00 | 15,000.0000 | 172,213,000 | 9999.99% | 0.01% |