| Insider · 31 positions | Net Shares per Quarter (+ Bought / − Sold) | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Name | Role | Shares Held ↓ | Q2 2026 | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q2 2024 | Q1 2024 | Q4 2023 | Q3 2023 | Q2 2023 | Q1 2023 | Q4 2022 | Q3 2022 |
| VIKING GLOBAL PERFORMANCE LLC | 26.6M | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
| VIKING GLOBAL INVESTORS LP | — | 18.6M | — | — | — | — | -3.5M | -3.1M | — | — | — | — | — | -1.5M | — | — | — | — |
| BridgeBio Pharma LLC | — | 14.6M | — | — | +785K | — | — | — | — | — | — | — | — | — | — | — | — | — |
| KKR Genetic Disorder L.P. | — | 13.3M | — | — | — | — | -6.0M | -6.0M | — | -5.8M | — | — | — | — | — | — | — | — |
| Neil Kumar | Chief Executive Officer | 4.3M | -302K | -154K | -360K | -299K | -209K | -549K | +66K | -56K | -31K | +311K | -102K | -102K | -342K | +733K | -269K | -28K |
| Charles J Homcy | — | 920K | +8K | — | — | -300K | -5K | — | — | — | +26K | -2K | -1K | -1K | +50K | -2K | -1K | -1K |
| Brian C Stephenson | CFO and Treasurer | 440K | — | — | — | — | — | -94K | +25K | -17K | -14K | +104K | -45K | -45K | -165K | +389K | -30K | -9K |
| Thomas Trimarchi | President and CFO | 362K | -36K | +27K | -52K | -81K | -21K | +95K | +32K | +4K | — | — | — | — | — | — | — | — |
| Cameron Turtle | Senior Vice President, Portfolio Management and Corporate Development | 256K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Ali J. Satvat | — | 170K | +9K | — | — | — | +15K | — | +40K | — | +26K | — | — | — | +52K | — | — | — |
| Maricel Apuli | Chief Accounting Officer | 129K | -7K | +7K | -9K | -6K | -6K | +24K | — | — | — | — | — | — | — | — | — | — |
| Brent L Saunders | — | 105K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Randal W Scott | — | 101K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Richard H Scheller | — | 55K | — | — | — | — | — | — | — | — | — | — | — | — | — | -1K | -1K | -1K |
| Jennifer E. Cook | — | 46K | -120K | — | — | — | +15K | — | — | — | +26K | — | — | — | +52K | — | — | — |
| Fred Hassan | — | 30K | +9K | — | — | — | +15K | — | — | — | +26K | — | — | — | +52K | — | — | — |
| Brian M. Stolz | Chief Operating Officer | 25K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Andrea Ellis | — | 23K | +9K | -65K | — | -17K | -25K | — | — | — | +26K | — | — | — | +52K | — | — | — |
| Randal W. Scott | — | 22K | -10K | -10K | -10K | — | +15K | — | — | — | +24K | -3K | -5K | -3K | +52K | — | — | — |
| DANIELS RONALD J | — | 21K | +9K | — | -61K | — | +15K | — | — | — | +26K | — | — | — | +52K | — | — | — |
| James C Momtazee | — | 19K | +9K | — | — | — | +15K | — | — | — | +26K | — | — | — | +52K | — | — | — |
| Andrew Lo | — | 18K | +9K | — | -96K | — | -85K | — | — | — | +26K | — | — | — | +52K | — | — | — |
| Yi Ching Yau | Chief Accounting Officer | 15K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Uma Sinha | Chief Scientific Officer | 11K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Frank Mccormick | — | 11K | +9K | — | -200K | -74K | -121K | — | -7K | — | +26K | — | -100K | — | — | +159K | — | — |
| Eric Aguiar | — | 11K | +9K | — | — | — | +15K | — | — | — | +26K | — | — | — | +52K | — | — | — |
| Douglas A. Dachille | — | 11K | +9K | — | — | — | +15K | — | — | — | +26K | — | — | — | +52K | — | — | — |
| Hannah Valantine | — | 9K | +4K | -34K | -25K | — | +6K | -13K | — | — | +26K | -6K | -6K | — | +52K | — | — | — |
| Michael Thomas Henderson | Chief Business Officer | 4K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| BridgeBio Pharma, Inc. | — | 1K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| KKR Management Holdings L.P. | — | 0 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |