Schedule 13G ownership disclosure
GENERATION BIO CO
Common Stock, $0.0001 Par Value · CUSIP: 37148K209
Event date: 2025-07-01
Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.
- Filing-level shares
- Unavailable
- Percent of class
- Unavailable
- Renaissance Technologies LLC
Shares: 344,263 · Class: 5.11%
- Renaissance Technologies Holdings Corporation
Shares: 344,263 · Class: 5.11%
Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.
Source: SEC EDGAR filingFiling metadata
- Accession number
- 0001037389-25-000072
- Form type
- SCHEDULE 13G
- Filer
- Generation Bio Co.
- CIK
- CIK 1733294
- Filed
- Nov 13, 2025
- Reporting period
- Jul 01, 2025
- Description
- Schedule 13G beneficial ownership