BlackRock, Inc. 13D and 13G filings for bluebird bio, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2024-11-08 2:17 pm Unchanged | 2024-09-30 | 13G | bluebird bio, Inc. BLUE | BlackRock Inc. BLK | 772,188 8.000% | 0 (Unchanged) | Filing |
| 2024-10-22 3:24 pm Purchase | 2024-09-30 | 13G | bluebird bio, Inc. BLUE | BlackRock Inc. BLK | 772,188 8.000% | 323,038 (+71.92%) | Filing |
| 2024-01-08 4:35 pm Purchase | 2023-12-31 | 13G | bluebird bio, Inc. BLUE | BlackRock Inc. BLK | 449,150 4.700% | 80,791 (+21.93%) | Filing |
| 2023-01-25 10:36 am Purchase | 2022-12-31 | 13G | bluebird bio, Inc. BLUE | BlackRock Inc. BLK | 368,359 8.900% | 72,759 (+24.61%) | Filing |
| 2022-02-02 7:11 pm Sale | 2021-12-31 | 13G | bluebird bio, Inc. BLUE | BlackRock Inc. BLK | 295,600 8.400% | -2,519 (-0.85%) | Filing |
| 2021-01-28 5:55 pm Purchase | 2020-12-31 | 13G | bluebird bio, Inc. BLUE | BlackRock Inc. BLK | 298,119 5.800% | 72,283 (+32.01%) | Filing |