| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | RA Capital Management, LLC | 7.00M (30.26%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 2 | TRV GP V, LLC | 6.22M (26.88%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 3 | Driehaus Capital Management LLC | 4.40M (19.01%) | -413.90K Decreased by -9.42% | Mar 31, 26 |
| 4 | TRV GP VI, LLC | 4.21M (18.22%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 5 | Samsara BioCapital, LLC | 3.15M (13.62%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 6 | The Goldman Sachs Group Inc | 2.91M (12.57%) | 191.30K Increased by +6.58% | Mar 31, 26 |
| 7 | Siren, L.L.C. | 2.00M (8.65%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 8 | BlackRock Inc | 1.82M (7.88%) | 20.85K Increased by +1.14% | Mar 31, 26 |
| 9 | Vanguard Group Inc | 1.51M (6.52%) | -10.56K Decreased by -0.70% | Dec 31, 25 |
| 10 | Bvf Inc | 1.35M (5.85%) | -367.53K Decreased by -27.16% | Mar 31, 26 |
| 11 | venBio Select Advisor LLC | 1.34M (5.78%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 12 | Vanguard Capital Management, LLC | 1.20M (5.18%) | 1.20M Increased by +100.00% | Mar 31, 26 |
| 13 | ADAR1 Capital Management LLC | 1.09M (4.71%) | -67.79K Decreased by -6.22% | Mar 31, 26 |
| 14 | PRIMECAP Management Company | 1.05M (4.54%) | 502.73K Increased by +47.93% | Mar 31, 26 |
| 15 | HHG PLC | 890.75K (3.85%) | 890.75K Increased by +100.00% | Mar 31, 26 |
| 16 | First Light Asset Management, LLC | 732.86K (3.17%) | 112.05K Increased by +15.29% | Mar 31, 26 |
| 17 | Geode Capital Management, LLC | 645.15K (2.79%) | 72.41K Increased by +11.22% | Mar 31, 26 |
| 18 | State Street Corp | 631.45K (2.73%) | 91.42K Increased by +14.48% | Mar 31, 26 |
| 19 | Casdin Capital, LLC | 553.27K (2.39%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 20 | VR Adviser, LLC | 506.06K (2.19%) | -104.75K Decreased by -20.70% | Mar 31, 26 |
| Rank | Holder | SharesFloat % | Change | Date reported |
|---|---|---|---|---|
| 1 | Vanguard Total Stock Mkt Idx Inv | 906.66K (3.92%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 2 | PRIMECAP Odyssey Aggressive Growth | 749.68K (3.24%) | 322.38K Increased by +43.00% | Mar 31, 26 |
| 3 | iShares Russell 2000 ETF | 509.19K (2.20%) | 4.68K Increased by +0.92% | May 29, 26 |
| 4 | Heptagon Driehaus US Micro Cap Eq C$ Acc | 406.22K (1.76%) | 7.87K Increased by +1.94% | Apr 30, 26 |
| 5 | Driehaus Small Cap Growth Institutional | 394.94K (1.71%) | 17.92K Increased by +4.54% | Apr 30, 26 |
| 6 | Heptagon Driehaus US Sm Cp Eq C USD Acc | 363.25K (1.57%) | 2.00K Increased by +0.55% | Apr 30, 26 |
| 7 | Vanguard Institutional Extnd Mkt Idx Tr | 260.63K (1.13%) | 1.41K Increased by +0.54% | Apr 30, 26 |
| 8 | Fidelity Small Cap Index | 210.04K (0.91%) | 655.00 Increased by +0.31% | Mar 31, 26 |
| 9 | iShares Biotechnology ETF | 199.55K (0.86%) | 3.82K Increased by +1.91% | May 29, 26 |
| 10 | iShares Russell 2000 Value ETF | 184.43K (0.80%) | 0.00 Increased by 0.00% | May 29, 26 |
| 11 | Driehaus Micro Cap Growth USD | 159.99K (0.69%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 12 | State Street® SPDR® S&P® PhrmctlsETF | 139.30K (0.60%) | 0.00 Increased by 0.00% | May 29, 26 |
| 13 | Russell 2000 Equity Index Fund B | 137.72K (0.60%) | -68.00 Decreased by -0.05% | Dec 31, 25 |
| 14 | State St Russell Sm/Mid Cp® Indx SL Cl I | 135.71K (0.59%) | 0.00 Increased by 0.00% | Apr 30, 26 |
| 15 | Vanguard US Opportunities Ins USD Acc | 135.00K (0.58%) | 50.40K Increased by +37.33% | Mar 31, 26 |
| 16 | Fidelity Extended Market Index | 116.90K (0.51%) | -5.66K Decreased by -4.84% | Apr 30, 26 |
| 17 | Column Small Cap Select | 110.89K (0.48%) | 0.00 Increased by 0.00% | Mar 31, 26 |
| 18 | Vanguard Russell 2000 ETF | 108.14K (0.47%) | 3.01K Increased by +2.78% | Apr 30, 26 |
| 19 | Schwab US Small-Cap ETF™ | 108.13K (0.47%) | 72.00 Increased by +0.07% | May 30, 26 |