SELLAS Life Sciences Group, Inc. (SLS) ownership: insiders 1% · institutions 39% · index and ETF funds 5% (13F 2026-06-30). Insider activity, 90 days: 0 sales, 0 open-market buys. SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| BlackRock | 15070302.00 | $222.44M | 8.1% | 2026-06-30 |
| CalSTRS | 2987040.00 | $202.37M | 1.6% | 2026-06-30 |
| State Street | 12996558.00 | $191.83M | 7.0% | 2026-06-30 |
| Vanguard | 12024749.00 | $177.49M | 6.5% | 2026-06-30 |
| Geode Capital Management | 4884175.00 | $72.11M | 2.6% | 2026-06-30 |
| Anson Funds Management LP | 4500000.00 | $66.42M | 2.4% | 2026-06-30 |
| Susquehanna | 2050597.00 | $30.27M | 1.1% | 2026-06-30 |
| Edward Jones | 2304561.00 | $28.55M | 1.2% | 2026-06-30 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-16 | |
| Sell | null | 2026-01-07 | |
| Sell | null | 2026-01-07 | |
| Sell | null | 2026-01-07 | |
| Sell | null | 2026-01-07 | |
| Sell | null | 2026-01-07 | |
| Sell | null | 2026-01-07 | |
| Sell | null | 2026-01-07 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.