Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.
| Filed | Form | Filer | Stake | Shares | Intent | |
|---|---|---|---|---|---|---|
| 2025-01-29 | SCHEDULE | ORBIMED ADVISORS LLC | 19.90% | 760,824 | view → | |
| 2020-02-19 | SC | 683 Capital Management, LLC | — | — | view → | |
| 2018-05-01 | SC | 683 Capital Management, LLC | — | — | view → | |
| 2018-02-26 | SC | Reddy E Premkumar | — | — | view → | |
| 2018-02-16 | SC | 683 Capital Management, LLC | — | — | view → | |
| 2018-01-09 | SC | SABBY MANAGEMENT, LLC | — | — | view → |
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-04-16 | ORBIMED ADVISORS LLC | 10%+ | Buy | 597,729 | $1.67 | $998K |
| 2026-04-16 | ORBIMED ADVISORS LLC | 10%+ | Buy | 597,729 | $1.67 | $1.00M |
| 2026-04-16 | ORBIMED ADVISORS LLC | 10%+ | Buy | 1,793,187 | $1.67 | $3.00M |
| Settlement | Short Interest | Days to Cover | % Δ vs prior |
|---|---|---|---|
| 2026-05-29 | 1,375,032 | 1.95 | -17.7% |
| 2026-05-15 | 1,671,345 | 1.00 | +198.4% |
| 2026-04-30 | 560,036 | 1.78 | +38.1% |
| 2026-04-15 | 405,599 | 2.05 | -1.5% |
| 2026-03-31 | 411,637 | 8.78 | -9.9% |
| 2026-03-13 | 456,663 | 4.36 | -12.2% |
| 2026-02-27 | 519,827 | 4.11 | -1.3% |
| 2026-02-13 | 526,505 | 3.89 | +4.1% |
| 2026-01-30 | 505,708 | 1.29 | -4.9% |
| 2026-01-15 | 531,738 | 1.50 | +106.1% |
| 2025-12-31 | 257,978 | 1.00 | +46.9% |
| 2025-12-15 | 175,604 | 1.00 | -39.8% |
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