Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.
| Filed | Form | Filer | Stake | Shares | Intent | |
|---|---|---|---|---|---|---|
| 2025-08-05 | SCHEDULE | Nantahala Capital Management, LLC | 49.10% | 68,394,000 | view → | |
| 2021-04-09 | SC | ORBIMED ADVISORS LLC | — | — | view → | |
| 2020-05-20 | SC | ORBIMED ADVISORS LLC | — | — | view → | |
| 2019-04-04 | SC | ORBIMED ADVISORS LLC | — | — | view → | |
| 2018-02-15 | SC | ORBIMED ADVISORS LLC | — | — | view → | |
| 2018-01-17 | SC | ORBIMED ADVISORS LLC | — | — | view → |
| Settlement | Short Interest | Days to Cover | % Δ vs prior |
|---|---|---|---|
| 2026-10-15 | 300,482 | 3.26 | +109.3% |
| 2026-09-30 | 143,564 | 1.00 | -46.6% |
| 2026-09-15 | 268,742 | 1.00 | -85.3% |
| 2026-08-14 | 103,406 | 1.00 | +16.2% |
| 2026-07-31 | 88,962 | 1.71 | +27.0% |
| 2026-07-15 | 70,049 | 1.00 | +2058.7% |
| 2026-06-30 | 3,245 | 1.00 | +107.0% |
| 2026-06-15 | 1,568 | 1.00 | -59.4% |
| 2026-05-29 | 3,862 | 1.00 | -80.2% |
| 2026-05-15 | 19,453 | 1.00 | -72.4% |
| 2026-04-30 | 70,535 | 1.00 | +451.9% |
| 2026-04-15 | 12,780 | 1.00 | -67.8% |
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