Q1 2025 · 13F-HR
Flagship Pioneering, LLCholdings as filed
Filed 2025-05-15 · accession 0000950123-25-005707
$235.8M
Reported value
4
Positions
2025-03-31
Period end
Holdings as filed
| CUSIP | Ticker | Issuer | Value | % port. | Shares | Class | Voting |
|---|---|---|---|---|---|---|---|
| 60770K107 | MRNA | Moderna Inc | $131.3M | 55.7% | 4,632,149 | Common | SHARED |
| 344174107 | FHTX | Foghorn Therapeutics Inc | $46.3M | 19.6% | 12,674,120 | Common | SHARED |
| 799566104 | SANA | Sana Biotechnology Inc | $42.0M | 17.8% | 25,001,856 | Common | SHARED |
| 81750R102 | MCRB1EUR | Seres Therapeutics Inc | $16.2M | 6.86% | 23,117,045 | Common | SHARED |
Source: SEC EDGAR · raw 13F holdings as filed. The Class column shows the option type when reported (Put/Call) or Common when the issuer's equity is held directly. 13F discloses long positions only.