Institutional Ownership
Generation Bio Co
CUSIP 37148K100COMGBIOGBXQ1 2026
13D / 13G Filings
43
Schedule 13D/13G on record
Beneficial Filers
15
Distinct reporting persons
Largest Stake
21.7%
Max % of class reported
Institutional Holders
2
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
43 filings · latest Aug 6, 2025
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Aug 6, 2025 | Fmr LLC | 13G/A | 3.5% | 2.35M | SEC |
| 2 | Jul 17, 2025 | Blackrock, Inc. | 13G/A | 1.7% | 1.15M | SEC |
| 3 | Feb 12, 2025 | Fmr LLC | 13G/A | 6.9% | 4.63M | SEC |
| 4 | Dec 9, 2024 | Bb Biotech AG | 13G/A | 5.0% | 3.31M | SEC |
| 5 | Nov 14, 2024 | Price T Rowe Associates Inc /Md/ | 13G/A | 14.0% | 9.35M | SEC |
| 6 | Nov 8, 2024 | Blackrock, Inc. | 13G | 5.1% | 3.42M | SEC |
| 7 | Oct 23, 2024 | Blackrock, Inc. | 13G | 5.1% | 3.42M | SEC |
| 8 | Feb 14, 2024 | Price T Rowe Associates Inc /Md/ | 13G/A | 10.5% | 6.93M | SEC |
| 9 | Feb 13, 2024 | Bb Biotech AG | 13G/A | 5.5% | 3.61M | SEC |
| 10 | Feb 9, 2024 | Atlas Venture Fund X, L.P. | 13G/A | 10.8% | 7.11M | SEC |
33 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Generation Bio Co.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Accent Capital Management, LLC | 61 | $53.3K |
| 2 | Huntington National Bank | 1 | $0 |