RBBN's three largest insider shareholders as of May 23, 2026 are Chase Co Jpmorgan (TenPercentOwner, 52.04Mn shares), Investments Ltd. Swarth (TenPercentOwner, 27.44Mn shares), Bruce William Mcclelland (President Ceo, 1.52Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Chase Co Jpmorgan | - | 0 | 52,036,572 | 11 Apr, 2025 |
| Shaul Shani | - | 183,466 | 0 | 17 Apr, 2026 |
| Beatriz V Infante | - | 343,224 | 0 | 08 Sep, 2025 |
| Krish A Prabhu | - | 58,477 | 0 | 27 May, 2022 |
| R Stewart Jr Ewing | - | 197,391 | 0 | 18 Jun, 2025 |
| Bruns H Grayson | - | 783,347 | 0 | 17 Apr, 2026 |
| Bruce William Mcclelland | President Ceo | 1,516,164 | 0 | 13 Feb, 2026 |
| Anthony Scarfo | Evp Gm, Cloud Edge Bu | 252,431 | 0 | 19 Sep, 2022 |
| Miguel A Lopez | Evp, Cfo | 456,797 | 0 | 21 Oct, 2024 |
| Patrick W Macken | Evp, Clo Secretary | 343,546 | 0 | 17 Oct, 2025 |
| Stephen J. Mccaffery | Evp, Sales Emea And Apac | 50,025 | 0 | 19 Sep, 2022 |
| Eric S Marmurek | Svp, Deputy Cfo And Cao | 449,807 | 0 | 17 Apr, 2026 |
| Steven M Bruny | Evp Sales, Americas Region | 297,359 | 0 | 19 Sep, 2022 |
| Investments Ltd. Swarth | - | 27,435,739 | 0 | 18 Aug, 2022 |
| Tanya Tamone | - | 180,800 | 0 | 18 Jun, 2025 |
| Beer Mariano De | - | 56,331 | 0 | 16 Jun, 2023 |
| Sam Bucci | Evp Coo | 448,811 | 0 | 17 Oct, 2025 |
| Scott Mair | - | 140,638 | 0 | 18 Jun, 2025 |
| John Raymond Townsend | Evp, Chief Financial Officer | 93,309 | 0 | 17 Apr, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 15 Apr, 2026 | Eric S Marmurek | Common Stock | A | 37,500 | - | 464,563 | D | M |
| 15 Apr, 2026 | Shaul Shani | Common Stock | A | 12,971 | - | 183,466 | D | A |
| 15 Apr, 2026 | Shaul Shani | Common Stock | A | 12,971 | - | 183,466 | D | A |
| 15 Apr, 2026 | Bruns H Grayson | Common Stock | A | 15,919 | - | 783,347 | D | A |
| 15 Apr, 2026 | John Raymond Townsend | Common Stock | A | 25,641 | - | 103,398 | D | M |
| 15 Apr, 2026 | Eric S Marmurek | Common Stock | D | 14,756 | $2.48 | 449,807 | D | F |
| 15 Apr, 2026 | John Raymond Townsend | Common Stock | D | 10,089 | $2.48 | 93,309 | D | F |
| 15 Apr, 2026 | Eric S Marmurek | Restricted Stock Units (RSUs) | D | 37,500 | $0.00 | 37,500 | D | M |
| 15 Apr, 2026 | John Raymond Townsend | Restricted Stock Units (RSUs) | D | 25,641 | $0.00 | 76,923 | D | M |
| 10 Feb, 2026 | Bruce William Mcclelland | Common Stock | A | 12,000 | $2.06 | 1,491,164 | D | P |
| 11 Feb, 2026 | Bruce William Mcclelland | Common Stock | A | 12,500 | $1.99 | 1,503,664 | D | P |
| 13 Feb, 2026 | Bruce William Mcclelland | Common Stock | A | 12,500 | $1.98 | 1,516,164 | D | P |
| 15 Jan, 2026 | Bruns H Grayson | Common Stock | A | 11,718 | - | 767,428 | D | A |
| 15 Jan, 2026 | Shaul Shani | Common Stock | A | 9,548 | - | 170,495 | D | A |
| 15 Jan, 2026 | Shaul Shani | Common Stock | A | 9,548 | - | 170,495 | D | A |
| 15 Jan, 2026 | Shaul Shani | Common Stock | A | 9,548 | - | 170,495 | D | A |
| 15 Dec, 2025 | Eric S Marmurek | Restricted Stock Units (RSUs) | D | 169,721 | $0.00 | 169,721 | D | A |
| 31 Oct, 2025 | Stephen J. Mccaffery | Restricted Stock Units (RSUs) | A | 432,027 | $0.00 | 432,027 | D | A |
| 31 Oct, 2025 | Stephen J. Mccaffery | RSUs | A | 108,006 | $0.00 | 108,006 | D | A |
| 31 Oct, 2025 | Stephen J. Mccaffery | Performance-Based RSUs (PSUs) | A | 64,804 | $0.00 | 64,804 | D | A |