CUSIP: 35661P100 | NYSE | 12 institutional holders
5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.
| Holder | Shares | % of Class | Change | Event Date | vs 13F |
|---|---|---|---|---|---|
| 13GRoche Holding Ltd | 18,692,766 | 17.4% | New 5%+ stake | Jul 20, 2026 | No 13F filer matched |
| 13D/ARA Capital Management, L.P. with RA Capital Healthcare Fund, L.P. | 15,367,270 |
| Style | Turnover | Location | Filed | ||||
|---|---|---|---|---|---|---|---|
| 2,022,131 | $31.8M | 0.0% | Agg Growth | Very Low | Mountain View, CA | 2026-11-06 | |
| 684,946 | $10.8M | 0.1% | Growth | Low | Providence, RI | 2026-10-23 | |
| 661,623 | $10.4M | 0.0% | Index | Very Low | Boston, MA | 2026-11-06 | |
| 656,676 | $10.3M | 0.0% | Core | Medium | Edinburgh, United Kingdom | 2026-11-06 | |
| 537,169 | $8.5M | 0.5% | Core | Medium | El Segundo, CA | 2026-11-04 | |
| 290,453 | $4.6M | 0.0% | Core | Low | Plymouth, MN | 2026-10-13 | |
| 78,395 | $1.2M | 0.0% | Core | Very High | New York, NY | 2026-11-09 | |
| 16,600 | $261.5K | 0.1% | ETF | Very Low | Austin, TX | 2026-11-02 | |
| 13,303 | $209.5K | 0.0% | Core | Low | New York, NY | 2026-11-05 | |
| 3,500 | $55.0K | 0.0% | Growth | Very High | New York, NY | 2026-10-16 | |
| 1,155 | $18.2K | 0.0% | Growth | Low | Tokyo, Mexico | 2026-10-22 | |
| 603 | $9.5K | 0.0% | Core | Low | Minneapolis, MN | 2026-11-05 |
| 14.3% |
| New 5%+ stake |
| Jul 20, 2026 |
| Not yet in a 13F |
| 13GPerceptive Advisors LLC | 10,871,847 | 10.1% | New 5%+ stake | Jul 20, 2026 | No 13F filer matched |
| 13GBenjamin A. Horowitz with AH Bio Fund I, L.P., AH Equity Partners Bio I, L.L.C., AH Parallel Fund IV, L.P., +5 more | 5,571,599 | 5.2% | New 5%+ stake | Jul 20, 2026 | No 13F filer matched |
| 13G/AAdar1 Capital Management, LLC with Adar1 Capital Management GP, LLC | 674,695 | 8.3% | New 5%+ stake | Jun 30, 2026 | No 13F filer matched |
| 13GHighbridge Capital Management LLC | 0 | 0.0% | No shares held | Jun 30, 2026 | Not yet in a 13F |