As of August 29, 2026, the three largest insider holders of BBIO are Global Investors Lp Viking (TenPercentOwner, 18.56Mn shares), Genetic Disorder L.P. Kkr (TenPercentOwner, 13.26Mn shares), Genetic Disorder L.P. Kkr (TenPercentOwner, 13.26Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Global Investors Lp Viking | TenPercentOwner | 0 | 18,555,375 | 18,555,375 | 56.3% | 01 Jul, 2025 |
| 2 | Genetic Disorder L.P. Kkr | TenPercentOwner | 0 | 13,260,971 | 13,260,971 | 40.2% | 14 May, 2025 |
| 3 | Thomas Trimarchi | President And Cfo | 336,529 | 0 | 336,529 | 1.0% | 18 Aug, 2026 |
| 4 | Neil Kumar | Chief Executive Officer | 243,327 | 0 | 243,327 | 0.7% | 26 May, 2026 |
| 5 | Ali J. Satvat | Director | 169,983 | 0 | 169,983 | 0.5% | 24 Jun, 2026 |
| 6 | Maricel Apuli | Chief Accounting Officer | 122,687 | 0 | 122,687 | 0.4% | 18 Aug, 2026 |
| 7 | Brian C Stephenson | Cfo And Treasurer | 102,464 | 0 | 102,464 | 0.3% | 27 Feb, 2025 |
| 8 | Fred Hassan | Director | 29,879 | 0 | 29,879 | 0.1% | 24 Jun, 2026 |
| 9 | Andrea Ellis | Director | 22,579 | 0 | 22,579 | 0.1% | 13 Jul, 2026 |
| 10 | Ronald J Daniels | Director | 20,981 | 0 | 20,981 | 0.1% | 24 Jun, 2026 |
| 11 | James C Momtazee | Director | 19,070 | 0 | 19,070 | 0.1% | 24 Jun, 2026 |
| 12 | Andrew Lo | Director | 18,079 | 0 | 18,079 | 0.1% | 24 Jun, 2026 |
| 13 | Brent L Saunders | Director | 17,600 | 0 | 17,600 | 0.1% | 03 Jan, 2022 |
| 14 | Randal W. Scott | Director | 11,589 | 0 | 11,589 | 0.0% | 19 May, 2026 |
| 15 | Frank Mccormick | Chairman Of Oncology | 10,579 | 0 | 10,579 | 0.0% | 24 Jun, 2026 |
| 16 | Douglas A. Dachille | Director | 10,579 | 0 | 10,579 | 0.0% | 24 Jun, 2026 |
| 17 | Eric Aguiar | Director | 10,579 | 0 | 10,579 | 0.0% | 24 Jun, 2026 |
| 18 | Hannah Valantine | Director | 9,259 | 0 | 9,259 | 0.0% | 24 Jun, 2026 |
| 19 | Jennifer E. Cook | Director | 8,383 | 0 | 8,383 | 0.0% | 13 Jul, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 16 Aug, 2026 | Maricel Apuli | Chief Accounting Officer | Disposed F | 4,714 | $79.86 | $376.46K | 122,687 | Direct |
| 16 Aug, 2026 | Thomas Trimarchi | President And Cfo | Disposed F | 22,781 | $79.86 | $1.82Mn | 336,529 | Direct |
| 09 Jul, 2026 | Jennifer E. Cook | Director | Acquired M | 19,000 | $8.45 | $160.55K | 27,383 | Direct |
| 09 Jul, 2026 | Andrea Ellis | Director | Acquired M | 17,167 | $16.75 | $287.55K | 39,746 | Direct |
| 09 Jul, 2026 | Andrea Ellis | Director | Disposed S | 17,167 | $84.00 | $1.44Mn | 22,579 | Direct |
| 09 Jul, 2026 | Jennifer E. Cook | Director | Acquired M | 112,422 | $29.00 | $3.26Mn | 139,805 | Direct |
| 09 Jul, 2026 | Andrea Ellis | Director | Disposed M | 17,167 | $0.00 | $0 | 17,167 | Direct |
| 09 Jul, 2026 | Jennifer E. Cook | Director | Acquired M | 17,167 | $16.75 | $287.55K | 156,972 | Direct |
| 09 Jul, 2026 | Jennifer E. Cook | Director | Disposed S | 36,167 | $84.00 | $3.04Mn | 120,805 | Direct |
| 09 Jul, 2026 | Jennifer E. Cook | Director | Disposed S | 112,422 | $90.00 | $10.12Mn | 8,383 | Direct |
| 09 Jul, 2026 | Jennifer E. Cook | Director | Disposed M | 19,000 | $0.00 | $0 | 0 | Direct |
| 09 Jul, 2026 | Jennifer E. Cook | Director | Disposed M | 112,422 | $0.00 | $0 | 0 | Direct |
| 09 Jul, 2026 | Jennifer E. Cook | Director | Disposed M | 17,167 | $0.00 | $0 | 0 | Direct |
| 22 Jun, 2026 | Eric Aguiar | Director | Acquired A | 3,990 | $0.00 | $0 | 10,579 | Direct |
| 22 Jun, 2026 | Hannah Valantine | Director | Acquired A | 3,990 | $0.00 | $0 | 11,455 | Direct |
| 22 Jun, 2026 | Ronald J Daniels | Director | Acquired A | 3,990 | $0.00 | $0 | 20,981 | Direct |
| 22 Jun, 2026 | Frank Mccormick | Director | Acquired A | 3,990 | $0.00 | $0 | 10,579 | Direct |
| 22 Jun, 2026 | Ali J. Satvat | Director | Acquired A | 3,990 | $0.00 | $0 | 169,983 | Direct |
| 22 Jun, 2026 | Andrea Ellis | Director | Acquired A | 3,990 | $0.00 | $0 | 22,579 | Direct |
| 22 Jun, 2026 | Douglas A. Dachille | Director | Acquired A | 3,990 | $0.00 | $0 | 10,579 | Direct |