NEW YORK , April 27, 2024 /PRNewswire/ -- WHY: Rosen Law Firm, a global investor rights law firm, reminds purchasers of common stock of bluebird bio, Inc. (NASDAQ: BLUE ) between April 24, 2023 and December 8, 2023, both dates inclusive (the "Class Period"), of the important May 28, 2024 lead plaintiff deadline . SO WHAT: If you purchased bluebird common stock during the Class Period you may be entitled to compensation without payment of any out of pocket fees or costs through a contingency fee ...