NEW YORK, June 29, 2024 /PRNewswire/ -- Rosen Law Firm, a global investor rights law firm, reminds investors a shareholder filed a class action lawsuit on behalf of all purchasers of securities of Altimmune, Inc. (NASDAQ: ALT) between December 1, 2023 and April 26, 2024. Shareholders who want to serve as lead plaintiff for the class must file their motions with the court by July 5, 2024. To join the Altimmune class action, go to https://rosenlegal.com/submit-form/?case_id=22535 or call Phillip Kim, Esq. tol ...