
Core Viewpoint - Rosen Law Firm is reminding investors who purchased Altimmune, Inc. securities between August 10, 2023, and June 25, 2025, of the October 6, 2025, deadline to serve as lead plaintiff in a class action lawsuit [1] Group 1: Class Action Details - A class action lawsuit has been filed against Altimmune, and investors may be entitled to compensation without any out-of-pocket fees through a contingency fee arrangement [1][2] - To participate in the class action, investors can submit a form or contact the law firm for more information [2][5] - The lawsuit claims that Altimmune misrepresented the results of its IMPACT Phase 2b MASH trial, leading to investor damages when the true results were revealed [4] Group 2: Law Firm Credentials - Rosen Law Firm has a strong track record in securities class actions, having achieved significant settlements, including the largest against a Chinese company at the time [3] - The firm has been consistently ranked among the top firms for securities class action settlements since 2013, recovering hundreds of millions for investors [3] - In 2019, the firm secured over $438 million for investors, showcasing its capability in handling such cases [3]