Institutional Ownership
Sellas Life Sciences Group I
CUSIP 81642T209COM NEWSLSQ1 2026
13D / 13G Filings
12
Schedule 13D/13G on record
Beneficial Filers
7
Distinct reporting persons
Largest Stake
9.9%
Max % of class reported
Institutional Holders
155
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
12 filings · latest Feb 17, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 17, 2026 | Anson Funds Management LP | 13G/A | 4.9% | 7.48M | SEC |
| 2 | Jan 30, 2026 | Highbridge Capital Management, LLC | 13G/A | 3.7% | 6.51M | SEC |
| 3 | Nov 14, 2025 | Anson Funds Management LP | 13G | 5.7% | 6.03M | SEC |
| 4 | Oct 17, 2025 | Blackrock, Inc. | 13G | 5.4% | 5.69M | SEC |
| 5 | Aug 14, 2025 | Anson Funds Management LP | 13G/A | 4.9% | 5.23M | SEC |
| 6 | Jul 29, 2025 | The Vanguard Group | 13G | 6.7% | 6.69M | SEC |
| 7 | May 15, 2025 | Anson Funds Management LP | 13G | 8.3% | 7.58M | SEC |
| 8 | Nov 8, 2024 | Highbridge Capital Management LLC | 13G/A | 9.9% | 13.26M | SEC |
| 9 | Feb 7, 2024 | Highbridge Capital Management LLC | 13G | 6.5% | 2.08M | SEC |
| 10 | Feb 16, 2021 | Cvi Investments, Inc. | 13G/A | 2.7% | 315.2K | SEC |
2 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Sellas Life Sciences Group I.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 12.20M | $51.60M |
| 2 | State Street Corp | 8.40M | $35.52M |
| 3 | Geode Capital Management, LLC | 3.91M | $16.55M |
| 4 | Marshall Wace, LLP | 2.04M | $8.62M |
| 5 | Jones Financial Companies Lllp | 1.68M | $7.31M |
| 6 | Morgan Stanley | 1.34M | $5.65M |
| 7 | Northern Trust Corp | 1.28M | $5.40M |
| 8 | Dagco, Inc. | 1.03M | $4.35M |
| 9 | Ubs Group AG | 745.4K | $3.15M |
| 10 | Invesco Ltd. | 698.1K | $2.95M |