Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.
| Filed | Form | Filer | Stake | Shares | Intent | |
|---|---|---|---|---|---|---|
| 2026-06-09 | SCHEDULE 13D/A | Fairmount Funds Management LLC | 19.99% | 14,069,494 | view → | |
| 2025-04-30 | SCHEDULE | Atlas Venture Fund XII, L.P. | 20.00% | 51,406 | view → | |
| 2025-04-30 | SCHEDULE | RA CAPITAL MANAGEMENT, L.P. | 4.10% | 1,324,954 | view → | |
| 2024-06-20 | SC | RA CAPITAL MANAGEMENT, L.P. | — | — | view → | |
| 2024-02-20 | SC | Sofinnova Venture Partners X, L.P. | — | — | view → | |
| 2022-07-20 | SC | Atlas Venture Fund XII, L.P. | — | — | view → |
| Settlement | Short Interest | Days to Cover | % Δ vs prior |
|---|---|---|---|
| 2026-05-29 | 3,163,082 | 5.43 | -6.9% |
| 2026-05-15 | 3,398,202 | 7.66 | +9.7% |
| 2026-04-30 | 3,097,060 | 3.96 | +1.2% |
| 2026-04-15 | 3,061,277 | 3.78 | +144.6% |
| 2026-03-31 | 1,251,725 | 2.26 | -18.4% |
| 2026-03-13 | 1,534,939 | 4.40 | -1.7% |
| 2026-02-27 | 1,561,572 | 7.31 | +0.2% |
| 2026-02-13 | 1,558,822 | 6.88 | +7.7% |
| 2026-01-30 | 1,446,919 | 5.65 | +7.5% |
| 2026-01-15 | 1,345,619 | 4.28 | -13.0% |
| 2025-12-31 | 1,546,739 | 3.32 | +47.9% |
| 2025-12-15 | 1,046,137 | 3.27 | -10.2% |
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