Flagship Pioneering, LLC Q4 2025 Filing

Filed February 17, 2026

Portfolio Value

$324.0B

Holdings

4

Report Date

Q4 2025

Filing Type

13F-HR

All Holdings (4 positions)

#StockSharesValue% PortfolioType
1
MRNAModerna Inc
4,632,149$136.6B42.16%
2
SANASana Biotechnology Inc
25,001,856$101.8B31.40%
3
FHTXFoghorn Therapeutics Inc
12,674,120$68.4B21.12%
4
MCRBSeres Therapeutics Inc
1,155,850$17.2B5.32%