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 |
|---|---|---|---|
| 2026-05-29 | 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% |
| 2026-03-31 | 39,674 | 1.00 | +71.2% |
| 2026-03-13 | 23,175 | 1.00 | +28.6% |
| 2026-02-27 | 18,020 | 1.00 | -35.9% |
| 2026-02-13 | 28,112 | 1.00 | +36.0% |
| 2026-01-30 | 20,671 | 1.00 | -16.4% |
| 2026-01-15 | 24,740 | 1.00 | -25.3% |
| 2025-12-31 | 33,109 | 1.00 | -55.5% |
| 2025-12-15 | 74,418 | 1.00 | +286.3% |
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