Company name bluebird bio, Inc.
Ticker BLUE
Class period December 11, 2017 – November 29, 2018
Lead plaintiff deadline February 11, 2019
Court District of Massachusetts

On December 1, 2018, bluebird issued a press release advising investors that it had “announced new long-term data from the completed Phase 1/2 Northstar (HGB-204) study of investigational LentiGlobin™ gene therapy in patients with transfusion-dependent β-thalassemia (TDT) and from the ongoing Phase 1/2 HGB-206 study of LentiGlobin in patients with sickle cell disease (SCD) today at the 60th Annual Meeting of the American Society of Hematology (ASH).” On December 3, 2018, Seeking Alpha published an article noting that these “results were lower than initial data reported a year ago indicating a lower rate of production of anti-sickling hemoglobin.” Following bluebird’s announcement of the clinical studies’ results, the Company’s stock price fell $6.39 per share, or 5.2%, to close at $116.50 on December 3, 2018.

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