Insider · CIK 0001720721
Eric S Marmurek
cfoofficer
Files at RBBN (Ribbon Communications Inc.). First filing -, latest -.
Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 0
$0 bought, $0 sold
Signals
This insider’s open-market buys and sells, scored.
No scored open-market trades yet.
Transactions
Every row this insider has filed, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Dec 15, 2025 | RBBN Ribbon Communications Inc. | AGrant or award Restricted Stock Units (RSUs)derivative | -169,721 | $0.00 | $0 | 169,721 | Dec 16, 2025 |
| Oct 15, 2025 | RBBN Ribbon Communications Inc. | MOption exercise Common Stock | +75,000 | - | - | 456,575 | Oct 17, 2025 |
| Oct 15, 2025 | RBBN Ribbon Communications Inc. | FTax withholding Common Stock | -29,512 | $3.81 | $112k | 427,063 | Oct 17, 2025 |
| Oct 15, 2025 | RBBN Ribbon Communications Inc. | MOption exercise Restricted Stock Units (RSUs)derivative | -75,000 | $0.00 | $0 | 75,000 | Oct 17, 2025 |
| May 16, 2025 | RBBN Ribbon Communications Inc. | MOption exercise Common Stock | +31,645 | - | - | 394,027 | May 19, 2025 |
| May 16, 2025 | RBBN Ribbon Communications Inc. | FTax withholding Common Stock | -12,452 | $3.62 | $45k | 381,575 | May 19, 2025 |
| May 15, 2025 | RBBN Ribbon Communications Inc. | AGrant or award Restricted Stock Units (RSUs)derivative | +78,125 | $0.00 | $0 | 78,125 | May 19, 2025 |
| May 15, 2025 | RBBN Ribbon Communications Inc. | AGrant or award RSUsderivative | +63,291 | $0.00 | $0 | 63,291 | May 19, 2025 |
| May 15, 2025 | RBBN Ribbon Communications Inc. | AGrant or award Performance-Based RSUs (PSUs)derivative | +46,875 | $0.00 | $0 | 46,875 | May 19, 2025 |
| May 15, 2025 | RBBN Ribbon Communications Inc. | AGrant or award PSUsderivative | +31,250 | $0.00 | $0 | 31,250 | May 19, 2025 |
| May 15, 2025 | RBBN Ribbon Communications Inc. | AGrant or award PSUsderivative | +36,392 | $0.00 | $0 | 36,392 | May 19, 2025 |
| May 16, 2025 | RBBN Ribbon Communications Inc. | MOption exercise RSUsderivative | -31,645 | $0.00 | $0 | 0 | May 19, 2025 |
| Apr 17, 2025 | RBBN Ribbon Communications Inc. | MOption exercise Common Stock | +23,234 | - | - | 363,424 | Apr 22, 2025 |
| Apr 17, 2025 | RBBN Ribbon Communications Inc. | FTax withholding Common Stock | -9,142 | $3.53 | $32k | 354,282 | Apr 22, 2025 |
| Apr 18, 2025 | RBBN Ribbon Communications Inc. | MOption exercise Common Stock | +13,354 | - | - | 367,636 | Apr 22, 2025 |
| Apr 18, 2025 | RBBN Ribbon Communications Inc. | FTax withholding Common Stock | -5,254 | $3.58 | $19k | 362,382 | Apr 22, 2025 |
| Apr 17, 2025 | RBBN Ribbon Communications Inc. | MOption exercise Restricted Stock Units (RSUs)derivative | -23,234 | $0.00 | $0 | 0 | Apr 22, 2025 |
| Apr 18, 2025 | RBBN Ribbon Communications Inc. | MOption exercise RSUsderivative | -13,354 | $0.00 | $0 | 0 | Apr 22, 2025 |
| Oct 17, 2024 | RBBN Ribbon Communications Inc. | MOption exercise Common Stock | +23,234 | - | - | 312,932 | Oct 21, 2024 |
| Oct 17, 2024 | RBBN Ribbon Communications Inc. | FTax withholding Common Stock | -9,142 | $3.38 | $31k | 303,790 | Oct 21, 2024 |
| Oct 18, 2024 | RBBN Ribbon Communications Inc. | MOption exercise Common Stock | +13,355 | - | - | 317,145 | Oct 21, 2024 |
| Oct 18, 2024 | RBBN Ribbon Communications Inc. | FTax withholding Common Stock | -5,255 | $3.56 | $19k | 311,890 | Oct 21, 2024 |
| Oct 17, 2024 | RBBN Ribbon Communications Inc. | MOption exercise Restricted Stock Units (RSUs)derivative | -23,234 | $0.00 | $0 | 23,234 | Oct 21, 2024 |
| Oct 18, 2024 | RBBN Ribbon Communications Inc. | MOption exercise RSUsderivative | -13,355 | $0.00 | $0 | 13,354 | Oct 21, 2024 |
| Oct 15, 2024 | RBBN Ribbon Communications Inc. | AGrant or award Restricted Stock Units (RSUs)derivative | +150,000 | $0.00 | $0 | 150,000 | Oct 17, 2024 |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.