Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.
| Filed | Form | Filer | Stake | Shares | Intent | |
|---|---|---|---|---|---|---|
| 2026-06-26 | SCHEDULE 13D/A | BIOTECHNOLOGY VALUE FUND L P | 6.30% | 2,712,852 | view → | |
| 2025-06-30 | SCHEDULE | BAKER BROS. ADVISORS LP | 9.50% | 6,666,540 | view → | |
| 2024-01-09 | SC | BIOTECHNOLOGY VALUE FUND L P | — | — | view → |
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-25 | Booth Bruce | director | Sale | 37,179 | $119.71 | $4.45M |
| 2026-06-25 | Booth Bruce | director | Sale | 112,299 | $120.66 | $13.55M |
| 2026-06-25 | Booth Bruce | director | Sale | 40,774 | $121.38 | $4.95M |
| 2026-06-25 | Booth Bruce | director | Sale | 4,977 | $122.67 | $611K |
| 2026-06-25 | Booth Bruce | director | Sale | 10,860 | $123.62 | $1.34M |
| 2026-06-25 | Booth Bruce | director | Sale | 11,711 | $124.61 | $1.46M |
| 2026-06-25 | Booth Bruce | director | Sale | 3,716 | $125.82 | $468K |
| 2026-06-25 | Booth Bruce | director | Sale | 1,609 | $126.71 | $204K |
| 2026-06-25 | Booth Bruce | director | Sale | 25,075 | $127.37 | $3.19M |
| 2026-06-25 | Booth Bruce | director | Sale | 2,197 | $128.69 | $283K |
| 2026-06-25 | Booth Bruce | director | Sale | 337 | $129.61 | $44K |
| 2026-06-25 | Booth Bruce | director | Sale | 5,144 | $119.71 | $616K |
| 2026-06-25 | Booth Bruce | director | Sale | 15,660 | $120.66 | $1.89M |
| 2026-06-25 | Booth Bruce | director | Sale | 5,689 | $121.38 | $691K |
| 2026-06-25 | Booth Bruce | director | Sale | 698 | $122.67 | $86K |
| 2026-06-25 | Booth Bruce | director | Sale | 1,517 | $123.62 | $188K |
| 2026-06-25 | Booth Bruce | director | Sale | 1,639 | $124.61 | $204K |
| 2026-06-25 | Booth Bruce | director | Sale | 522 | $125.82 | $66K |
| 2026-06-25 | Booth Bruce | director | Sale | 223 | $126.71 | $28K |
| 2026-06-25 | Booth Bruce | director | Sale | 3,507 | $127.37 | $447K |
| 2026-06-25 | Booth Bruce | director | Sale | 305 | $128.69 | $39K |
| 2026-06-25 | Booth Bruce | director | Sale | 46 | $129.61 | $6K |
| 2026-06-25 | Booth Bruce | director | Sale | 9,994 | $107.30 | $1.07M |
| 2026-06-25 | Booth Bruce | director | Sale | 159 | $108.02 | $17K |
| 2026-06-25 | Booth Bruce | director | Sale | 14,351 | $108.83 | $1.56M |
| Settlement | Short Interest | Days to Cover | % Δ vs prior |
|---|---|---|---|
| 2026-07-15 | 9,900,469 | 14.67 | -2.4% |
| 2026-06-30 | 10,146,003 | 5.29 | +1.8% |
| 2026-06-15 | 9,962,823 | 15.59 | -1.4% |
| 2026-05-29 | 10,103,698 | 20.59 | +1.0% |
| 2026-05-15 | 10,004,363 | 21.29 | +3.3% |
| 2026-04-30 | 9,687,598 | 18.84 | +0.7% |
| 2026-04-15 | 9,622,452 | 19.48 | -7.5% |
| 2026-03-31 | 10,402,722 | 14.57 | +4.3% |
| 2026-03-13 | 9,968,655 | 13.82 | -3.0% |
| 2026-02-27 | 10,275,249 | 12.64 | +4.8% |
| 2026-02-13 | 9,807,318 | 11.92 | +4.8% |
| 2026-01-30 | 9,356,012 | 13.03 | +8.1% |
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