Flagship Pioneering Inc. 13F Holdings · Q2 2026
Flagship Pioneering Inc. reported 5 securities worth $1.54B in its SEC 13F filing for Q2 2026 (period ended 2026-06-30). Top holdings: GENB (68.66%), MRNA (21.07%), SANA (5.67%).
| Rank | Ticker | Company | Value | % Portfolio | Shares | Action |
|---|---|---|---|---|---|---|
| 1 | GENB | GENERATE BIOMEDICINES INC | $1.06B | 68.66% | 62.7M | Hold |
| 2 | MRNA | MODERNA INC | $324.4M | 21.07% | 4.6M | Hold |
| 3 | SANA | SANA BIOTECHNOLOGY INC | $87.3M | 5.67% | 25.0M | Hold |
| 4 | FHTX | FOGHORN THERAPEUTICS INC | $61.8M | 4.02% | 12.7M | Hold |
| 5 | MCRB | SERES THERAPEUTICS INC | $9.1M | 0.59% | 1.2M | Hold |
Source: SEC Form 13F filings · as of 2026-06-30
Every position in this 13F-HR, with its change from the prior quarter.
13F holdings, latest quarter
SourceSEC EDGAR13F-HR