SLS SELLAS Life Sciences Group, Inc.: institutional ownership and insider trading
215 funds reported holding $1.57B of SELLAS Life Sciences Group, Inc. in their latest 13F filings; in Q2 2026 funds net bought $501M, with 64 new positions and 22 funds selling out; over the last 12 months insiders bought $101K and sold $0 on the open market.
Famous investors holding SLS
- Ken Griffin (Citadel Advisors): $97.5M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $16.3M, 0.0% of the portfolio
- Renaissance Technologies (Renaissance Technologies): $4.58M, 0.0% of the portfolio
Largest institutional holders of SLS
- BlackRock, Inc. (BLK) — $222M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP — $198M
- STATE STREET CORP (STT, STT-PG) — $192M
- VANGUARD CAPITAL MANAGEMENT LLC — $121M
- Anson Funds Management LP — $105M
- CITADEL ADVISORS LLC — $97.5M
- GEODE CAPITAL MANAGEMENT, LLC — $72.1M
- VANGUARD GROUP INC — $31.9M
- VANGUARD PORTFOLIO MANAGEMENT LLC — $31.9M
- BNP PARIBAS FINANCIAL MARKETS — $31.2M
Recent SLS insider trades
- Nov 19, 2025: Kalin Katherine Bach bought 63,400 shares ($101K)
- Jun 12, 2025: Van Nostrand Robert L bought 10,000 shares ($14.8K)
- May 30, 2025: Wasman Jane bought 20,000 shares ($33.8K)
- May 22, 2025: Kalin Katherine Bach bought 20,000 shares ($36.0K)
5%+ owners
- STATE STREET CORPORATION: 7.0% (Schedule 13G, filed Aug 7, 2026)
- BlackRock, Inc.: 6.8% (Schedule 13G/A, filed Apr 24, 2026)
- Vanguard Capital Management: 5.2% (Schedule 13G, filed Jul 31, 2026)