Business
Atara Biotherapeutics: Atara Biotherapeutics is the defendant in a class action lawsuit alleging false and misleading statements regarding its business, operations, and prospects, specifically concerning the regulatory approval of its lead product candidate, tabelecleucel. Its stock price experienced significant declines following FDA decisions.
United States — Food and Drug Administration: The United States — Food and Drug Administration issued Complete Response Letters and placed a clinical hold on Atara Biotherapeutics' Investigational New Drug applications, citing manufacturing issues and deficiencies in the ALLELE study, which directly impacted the company's stock price and led to the class action.
May 01, 2026 · 6 articles