DOSSIER · 13F Holders · Q4 2025
MRSN
MERSANA THERAPEU
2 institutions still hold MERSANA THERAPEU as of Q4 2025. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.
CUSIP 59045L205·2 13F holders·last filed Dec 31, 2025
AI Holders Summary · Q4 2025
2 institutions reported MRSN in Q4 2025. Nextech Invest, Ltd. leads at 95.5% of the visible book.
Top holders
Sorted by position value. Source: SEC EDGAR 13F-HR filings.