CUSIP: 83422E105 | 262 institutional holders
5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.
| Holder | Shares | % of Class | Change | Event Date | vs 13F |
|---|---|---|---|---|---|
| 13D/ABcls II Investco, LP with Bain Capital Life Sciences Opportunities IV, L.P., Bcls II Equity Opportunities, LP, Bain Capital Life Sciences Fund II, L.P., +2 more | 8,604,852 | 8.8% | New 5%+ stake | Mar 6, 2026 | No 13F filer matched |
| Style | Turnover | Location | Filed | ||||
|---|---|---|---|---|---|---|---|
| 3,030 | $21.8K | 0.0% | Value | Medium | Rancho Santa Fe, CA | 2026-05-21 | |
| 1,220 | $9.0K | 0.0% | Index | Low | San Francisco, CA | 2026-04-07 | |
| 1,005 | $7.4K | 0.0% | Yield | Medium | Ft Lauderdale, FL | 2026-04-27 | |
| 517 | $3.7K | 0.0% | Core | Medium | Birmingham, AL | 2026-05-18 | |
| 77 | $554 | 0.0% | ETF | Medium | Scottsdale, AZ | 2026-04-16 | |
| 75 | $540 | 0.0% | Index | Low | Chicago, IL | 2026-05-07 | |
| 5 | $36 | 0.0% | ETF | Medium | San Francisco, CA | 2026-05-08 |