Schedule 13G ownership disclosure
BLUEBIRD BIO INC
Security class unavailable · CUSIP: 09609G100
Event date: 2020-12-31
Legacy cover-page extraction is best effort and may not include every reporting person.
- Filing-level shares
- 5,349,165
- Percent of class
- 8.0600%
Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.
Source: SEC EDGAR filingFiling metadata
- Accession number
- 0000902219-21-000004
- Form type
- SC 13G
- Filer
- WELLINGTON MANAGEMENT GROUP LLP
- CIK
- CIK 902219
- Filed
- Jan 11, 2021
- Reporting period
- Dec 31, 2020
- Description
- Schedule 13G beneficial ownership