| SC 13G/A | 2024-04-10 | STATE STREET CORP | bluebird bio, Inc. | - | 1.8% | EDGAR |
| SC 13G/A | 2024-02-14 | PFM Health Sciences, LP | bluebird bio, Inc. | - | 1.9% | EDGAR |
| SC 13G/A | 2024-02-14 | TANG CAPITAL PARTNERS LP | bluebird bio, Inc. | 1,700,000 | 0.9% | EDGAR |
| SC 13G | 2024-02-14 | Alyeska Investment Group, L.P. | bluebird bio, Inc. | 6,912,502 | 6.3% | EDGAR |
| SC 13G | 2024-02-14 | Granahan Investment Management, LLC | bluebird bio, Inc. | 8,077,697 | 7.4% | EDGAR |
| SC 13G/A | 2024-02-13 | VANGUARD GROUP INC | bluebird bio, Inc. | 8,775,379 | 4.6% | EDGAR |
| SC 13G | 2024-02-06 | GOLDMAN SACHS GROUP INC | bluebird bio, Inc. | 12,181,040 | 6.4% | EDGAR |
| SC 13G/A | 2024-01-25 | STATE STREET CORP | bluebird bio, Inc. | - | 7.3% | EDGAR |
| SC 13G/A | 2024-01-08 | BlackRock Inc. | bluebird bio, Inc. | 8,983,001 | 4.7% | EDGAR |
| SC 13G | 2023-04-21 | PFM Health Sciences, LP | bluebird bio, Inc. | - | 5.7% | EDGAR |
| SC 13G/A | 2023-03-10 | STATE STREET CORP | bluebird bio, Inc. | - | 11.0% | EDGAR |
| SC 13G/A | 2023-02-14 | TANG CAPITAL PARTNERS LP | bluebird bio, Inc. | 4,635,528 | 5.6% | EDGAR |
| SC 13G/A | 2023-02-09 | STATE STREET CORP | bluebird bio, Inc. | - | 15.4% | EDGAR |
| SC 13G | 2023-02-09 | VANGUARD GROUP INC | bluebird bio, Inc. | 4,266,320 | 5.2% | EDGAR |
| SC 13G/A | 2023-02-03 | FIRST TRUST PORTFOLIOS LP | bluebird bio, Inc. | 0 | 0.0% | EDGAR |
| SC 13G/A | 2023-01-25 | BlackRock Inc. | bluebird bio, Inc. | 7,367,181 | 8.9% | EDGAR |
| SC 13G/A | 2023-01-12 | MILLENNIUM MANAGEMENT LLC | bluebird bio, Inc. | 973,085 | 1.2% | EDGAR |
| SC 13G/A | 2022-10-11 | STATE STREET CORP | bluebird bio, Inc. | - | 16.5% | EDGAR |
| SC 13G/A | 2022-09-09 | WELLINGTON MANAGEMENT GROUP LLP | bluebird bio, Inc. | 244,061 | 0.3% | EDGAR |
| SC 13G | 2022-08-01 | MILLENNIUM MANAGEMENT LLC | bluebird bio, Inc. | 3,873,900 | 5.4% | EDGAR |