VANGUARD GROUP 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 |
| 2024-11-14 10:32 am Unchanged | 2024-09-30 | 13G | bluebird bio, Inc. BLUE | VANGUARD GROUP INC | 523,700 5.400% | 0 (Unchanged) | Filing |
| 2024-11-13 11:12 am Unchanged | 2024-09-30 | 13G | bluebird bio, Inc. BLUE | VANGUARD GROUP INC | 523,700 5.400% | 0 (Unchanged) | Filing |
| 2024-11-04 1:30 pm Unchanged | 2024-09-30 | 13G | bluebird bio, Inc. BLUE | VANGUARD GROUP INC | 523,700 5.400% | 0 (Unchanged) | Filing |
| 2024-11-04 11:43 am Purchase | 2024-09-30 | 13G | bluebird bio, Inc. BLUE | VANGUARD GROUP INC | 523,700 5.400% | 84,931 (+19.36%) | Filing |
| 2024-02-13 5:00 pm Purchase | 2023-12-29 | 13G | bluebird bio, Inc. BLUE | VANGUARD GROUP INC | 438,769 4.610% | 225,453 (+105.69%) | Filing |
| 2023-02-09 11:12 am Purchase | 2022-12-30 | 13G | bluebird bio, Inc. BLUE | VANGUARD GROUP INC | 213,316 5.150% | 37,971 (+21.65%) | Filing |
| 2022-07-11 1:13 pm Sale | 2022-06-30 | 13G | bluebird bio, Inc. BLUE | VANGUARD GROUP INC | 175,345 4.910% | -186,334 (-51.52%) | Filing |
| 2022-02-09 3:33 pm Sale | 2021-12-31 | 13G | bluebird bio, Inc. BLUE | VANGUARD GROUP INC | 361,680 10.320% | -163,089 (-31.08%) | Filing |
| 2021-04-12 09:52 am Purchase | 2021-03-31 | 13G | bluebird bio, Inc. BLUE | VANGUARD GROUP INC | 524,768 10.120% | 25,807 (+5.17%) | Filing |
| 2021-02-10 10:39 am Purchase | 2020-12-31 | 13G | bluebird bio, Inc. BLUE | VANGUARD GROUP INC | 498,962 9.740% | 207,813 (+71.38%) | Filing |