Form 4 · Filed May 19, 2026, 12:12 PM UTC
RBBN/Ribbon Communications Inc.
Marmurek Eric S — EVP, Chief Financial Officer
AI Thesis
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Research signal, not investment advice. Form 4 AI surfaces SEC filings and applies an analytical layer — it does not predict prices or recommend trades. Past performance does not guarantee future results. See methodology and public track record for how scores are computed.
Transactions
15 rows| Date | Code | Direction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| May 15, 2026 | M | other | 31,646 | — | — | 31,645 |
| May 15, 2026 | M | other | 31,646 | — | — | 540,362 |
| May 15, 2026 | F | other | 12,452 | $3 | $32,749 | 527,910 |
| May 15, 2026 | M | other | 26,043 | — | — | 553,953 |
| May 15, 2026 | F | other | 10,247 | $3 | $26,950 | 543,706 |
| May 15, 2026 | M | other | 23,146 | — | — | 0 |
| May 15, 2026 | M | other | 26,043 | — | — | 52,082 |
| May 15, 2026 | M | other | 23,146 | — | — | 517,823 |
| May 15, 2026 | F | other | 9,107 | $3 | $23,951 | 508,176 |
| Apr 17, 2026 | F | other | 19,107 | $3 | $51,780 | 479,118 |
| Apr 17, 2026 | M | other | 25,651 | — | — | 504,769 |
| Apr 17, 2026 | F | other | 10,092 | $3 | $27,349 | 494,677 |
| Apr 17, 2026 | M | other | 25,651 | — | — | 0 |
| Apr 17, 2026 | M | other | 48,328 | — | — | 0 |
| Apr 17, 2026 | M | other | 48,328 | — | — | 498,135 |
Source: SEC EDGAR raw filing ↗ · Accession 0001708055-26-000034