Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.
| Filed | Form | Filer | Stake | Shares | Intent | |
|---|---|---|---|---|---|---|
| 2026-04-02 | SCHEDULE 13D/A | Kalayoglu Murat | 19.90% | 5,833,971 | view → | |
| 2025-01-15 | SCHEDULE | SPRINGER TIMOTHY A | 36.90% | 9,555,394 | view → | |
| 2024-10-15 | SC | Kalayoglu Murat | — | — | view → | |
| 2024-07-05 | SC | SPRINGER TIMOTHY A | — | — | view → | |
| 2024-04-12 | SC | SPRINGER TIMOTHY A | — | — | view → | |
| 2021-12-27 | SC | SPRINGER TIMOTHY A | — | — | view → | |
| 2021-05-27 | SC | SPRINGER TIMOTHY A | — | — | view → | |
| 2020-10-23 | SC | SPRINGER TIMOTHY A | — | — | view → | |
| 2020-10-15 | SC | SPRINGER TIMOTHY A | — | — | view → | |
| 2020-02-05 | SC | ORBIMED ADVISORS LLC | — | — | view → | |
| 2020-01-02 | SC | SPRINGER TIMOTHY A | — | — | view → | |
| 2019-12-17 | SC | SPRINGER TIMOTHY A | — | — | view → | |
| 2019-11-13 | SC | ORBIMED ADVISORS LLC | — | — | view → | |
| 2019-02-04 | SC | Polaris Venture Partners V, L.P. | — | — | view → | |
| 2018-05-03 | SC | Polaris Venture Partners V, L.P. | — | — | view → | |
| 2018-01-26 | SC | ORBIMED ADVISORS LLC | — | — | view → |
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-04-02 | Hoge Elizabeth | 10%+ | Option exercise | 758,001 | — | — |
| 2026-04-02 | Kalayoglu Murat | 10%+ | Option exercise | 758,001 | — | — |
| Settlement | Short Interest | Days to Cover | % Δ vs prior |
|---|---|---|---|
| 2026-10-15 | 1,875,103 | 11.73 | +1.1% |
| 2026-09-30 | 1,855,626 | 12.64 | +2.9% |
| 2026-09-15 | 1,803,282 | 17.00 | -0.5% |
| 2026-08-31 | 1,811,559 | 13.38 | -3.0% |
| 2026-08-14 | 1,868,036 | 17.85 | +1.3% |
| 2026-07-31 | 1,843,723 | 14.89 | -4.3% |
| 2026-07-15 | 1,925,634 | 12.30 | +2.1% |
| 2026-06-30 | 1,886,695 | 4.91 | -2.1% |
| 2026-06-15 | 1,927,010 | 3.24 | -15.9% |
| 2026-05-29 | 2,291,824 | 12.37 | +3.4% |
| 2026-05-15 | 2,216,090 | 11.87 | +2.2% |
| 2026-04-30 | 2,169,081 | 12.79 | -2.0% |
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