Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.
| Filed | Form | Filer | Stake | Shares | Intent | |
|---|---|---|---|---|---|---|
| 2026-06-04 | SCHEDULE 13D/A | AH Bio Fund II, L.P. | 9.90% | 11,682,032 | view → | |
| 2025-03-05 | SCHEDULE | Patel Sujal M | 15.70% | 20,297,732 | view → | |
| 2025-03-05 | SCHEDULE | Mallick Parag | 17.40% | 22,263,911 | view → | |
| 2025-01-31 | SCHEDULE | PERCEPTIVE ADVISORS LLC | 10.00% | 12,594,211 | view → | |
| 2023-03-01 | SC | Nautilus Biotechnology, Inc. | — | — | view → |
| Settlement | Short Interest | Days to Cover | % Δ vs prior |
|---|---|---|---|
| 2026-05-29 | 760,157 | 1.76 | -7.9% |
| 2026-05-15 | 825,026 | 2.11 | +15.3% |
| 2026-04-30 | 715,637 | 2.47 | +12.0% |
| 2026-04-15 | 638,943 | 2.01 | -5.3% |
| 2026-03-31 | 674,952 | 1.34 | +51.1% |
| 2026-03-13 | 446,652 | 2.36 | +13.9% |
| 2026-02-27 | 392,211 | 1.44 | +14.0% |
| 2026-02-13 | 344,071 | 2.20 | +12.0% |
| 2026-01-30 | 307,305 | 1.56 | -16.6% |
| 2026-01-15 | 368,545 | 1.57 | -17.2% |
| 2025-12-31 | 445,221 | 2.45 | +14.3% |
| 2025-12-15 | 389,399 | 1.38 | -7.5% |
Free. We email you when criteria match. One-click unsubscribe in every email.
Custom alerts · full feed · daily intelligence · API. $1,500/mo. Pilots welcome.
Request a pilot →