Recent Class Action Filed for Altimmune, Inc. Investors: Join the Recovery Effort

Class Action Lawsuit Against Altimmune, Inc.

On August 7, 2025, The Gross Law Firm announced a class action lawsuit against Altimmune, Inc. (NASDAQ: ALT) aimed at recovering losses for investors who purchased shares of the company between August 10, 2023, and June 25, 2025. The firm encourages affected shareholders to reach out for potential lead plaintiff designation.

Background

Altimmune recently faced scrutiny after the company's announcement on June 26, 2025, regarding the topline results from its IMPACT Phase 2b MASH trial for Pemvidutide, a treatment for a rare liver condition known as MASH (Metabolic-Associated Steatotic Liver Disease). Investors were led to believe that positive results were imminent, based on the company's prior communications that suggested optimistic outcomes for the trial.

However, the results revealed a stark contrast to these expectations, as Altimmune failed to achieve statistical significance concerning the primary endpoint of fibrosis reduction. Although a positive trend was noted, the higher-than-anticipated placebo response limited the results, raising alarm bells among shareholders. When addressing this disappointing outcome, representatives from Altimmune attributed it to the Phase 2 nature of the trial, promising more favorable results in the upcoming Phase 3 trial.

In response to this news, the value of Altimmune's stock plummeted dramatically. From a closing price of $7.71 per share on June 25, 2025, the stock plunged to $3.61 per share the following day, marking a staggering 53.2% decline in just 24 hours.

Call to Action for Shareholders

Shareholders who bought into ALT during the specified trial period are urged not to delay in registering for the class action. The deadline for filing to be named a lead plaintiff in this case is October 6, 2025. Being a lead plaintiff is not a prerequisite for recovering losses, but it does allow for more active participation in the case.

Once registered, shareholders will receive updates on the status of the case through a portfolio monitoring system.

The Role of The Gross Law Firm

The Gross Law Firm, recognized nationally for handling class action cases, aims to protect the rights of investors who have suffered losses due to misleading information and deceptive practices by companies. Their commitment to ensuring responsible business conduct sets them apart, making it imperative for investors to leverage their expertise during such trying times.

By participating in the class action, investors can take a proactive stance in addressing their stock losses. The firm assures that there are no costs or obligations involved in participating in this lawsuit.

Should you wish to register or learn more about the next steps, please contact The Gross Law Firm at 15 West 38th Street, 12th floor, New York, NY, 10018, or through their email or phone line available on their website.

As investors brace themselves for the repercussions of this significant stock decline, the class action provides a necessary avenue for shareholders to seek redress and potentially recover their losses. Stay informed, stay active, and consider your options moving forward, especially as the deadline approaches.