Ribbon Communications Inc. (RBBN) ownership: Top institutional holder: JPMORGAN CHASE & CO ($107.99M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| JPMORGAN CHASE & CO | 52043036.00 | $107.99M | 2026-03-31 |
| NEUBERGER BERMAN GROUP LLC | 17361988.00 | $33.20M | 2026-03-31 |
| VANGUARD GROUP INC | 7833009.00 | $22.56M | 2025-12-31 |
| PARADIGM CAPITAL MANAGEMENT INC/NY | 8036335.00 | $17.04M | 2026-03-31 |
| BlackRock, Inc. | 6724007.00 | $14.25M | 2026-03-31 |
| DIMENSIONAL FUND ADVISORS LP | 6351110.00 | $13.46M | 2026-03-31 |
| ROYCE & ASSOCIATES LP | 4879741.00 | $10.35M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4216459.00 | $8.94M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.