MoonLake Immunotherapeutics Class Action Lawsuit: Rosen Law Firm Announces Filing

Strategic Insights -

A class action lawsuit has been filed on behalf of purchasers of common stock of MoonLake Immunotherapeutics (NASDAQ: MLTX) between March 10, 2024, and September 29, 2025. The lawsuit alleges that the company made false and/or misleading statements regarding the distinction between its Nanobodies and monoclonal antibodies. Investors who purchased MoonLake common stock during the class period may be entitled to compensation without payment of any out-of-pocket fees or costs through a contingency fee arrangement.

Key Takeaways:

  • The lawsuit was filed by Rosen Law Firm, a global investor rights law firm, on behalf of purchasers of MoonLake Immunotherapeutics common stock between March 10, 2024, and September 29, 2025.
  • The lawsuit alleges that the company made false and/or misleading statements regarding the distinction between its Nanobodies and monoclonal antibodies.
  • Investors who purchased MoonLake common stock during the class period may be entitled to compensation without payment of any out-of-pocket fees or costs through a contingency fee arrangement.
  • The lawsuit claims that investors suffered damages when the true details about the company's statements entered the market.
  • The Rosen Law Firm represents investors throughout the globe, concentrating its practice in securities class actions and shareholder derivative litigation.
  • The firm has achieved significant settlements, including the largest ever securities class action settlement against a Chinese company at the time.

Statistics:

  • The lawsuit was filed on October 19, 2025, and the deadline to move the Court to join the lawsuit is December 15, 2025.
  • The complaint alleges that the company made false and/or misleading statements regarding the distinction between its Nanobodies and monoclonal antibodies.
  • Investors who purchased MoonLake common stock during the class period may be entitled to compensation of hundreds of millions of dollars under a contingency fee arrangement.

Sources:

  • Newsfile Corp - October 19, 2025
  • Rosen Law Firm, P.A. - 275 Madison Avenue, 40th Floor, New York, NY 10016, Tel: (212) 686-1060, Toll Free: (866) 767-3653, Fax: (212) 202-3827, case@rosenlegal.com, www.rosenlegal.com