Colvin Richard A, an officer of bluebird bio, is set to sell 2,824 shares of common stock on 12/10/2024. The aggregate market value of the shares to be sold is $1,270.8. This transaction stems from vested restricted stock units under the company's equity plan.The shares were originally acquired on 11/01/2022 as part of a 7,500-share grant from the issuer as compensation for services rendered. The sale is partially due to withholding taxes associated with the vesting of these restricted stock units.The planned sale was instructed on 05/10/2023, indicating a pre-arranged transaction. No other securities sales by the officer have been reported in the past three months, suggesting this is an isolated event rather than part of a larger divestment strategy.

Colvin Richard A, an officer of bluebird bio, is set to sell 2,824 shares of common stock on 12/10/2024. The aggregate market value of the shares to be sold is $1,270.8. This transaction stems from vested restricted stock units under the company's equity plan.The shares were originally acquired on 11/01/2022 as part of a 7,500-share grant from the issuer as compensation for services rendered. The sale is partially due to withholding taxes associated with the vesting of these restricted stock units.The planned sale was instructed on 05/10/2023, indicating a pre-arranged transaction. No other securities sales by the officer have been reported in the past three months, suggesting this is an isolated event rather than part of a larger divestment strategy.