DOSSIER · 13F Holders · Q3 2026
SELLAS LIFE SCIENCES GROUP I
7 institutions still hold SELLAS LIFE SCIENCES GROUP I as of Q3 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.
CUSIP 81642T959·7 13F holders·last filed Sep 30, 2026
AI Holders Summary · Q3 2026
7 institutions reported SELLAS LIFE SCIENCES GROUP I in Q3 2026. GROUP ONE TRADING LLC leads at 53.5% of the visible book.
Top holders
Sorted by position value. Source: SEC EDGAR 13F-HR filings.