MLTX CLASS ACTION NOTICE: Berger Montague Encourages MoonLake Immunotherapeutics (NASDAQ: MLTX) Investors to Inquire About a Securities Fraud Class Action

Core Viewpoint - A class action lawsuit has been filed against MoonLake Immunotherapeutics for allegedly misleading investors regarding the efficacy of its drug candidate, sonelokimab (SLK), which reportedly failed to meet clinical benchmarks [3][4]. Company Overview - MoonLake Immunotherapeutics is a clinical-stage biotech firm based in Zug, Switzerland, focusing on next-generation immunotherapies [2]. Legal Proceedings - The lawsuit is on behalf of investors who purchased MoonLake shares from March 10, 2024, to September 29, 2025, with a deadline of December 15, 2025, for investors to seek lead plaintiff status [1][2]. Allegations - The complaint claims that MoonLake promoted SLK as a breakthrough treatment but failed to disclose that it targets the same molecules as BIMZELX, an FDA-approved monoclonal antibody, indicating it was not clinically superior [3]. Stock Impact - Following the disclosure of Phase 3 trial results on September 28, 2025, which showed that SLK did not meet efficacy benchmarks, MoonLake's stock price plummeted by $55.75 per share, nearly 90% in one trading session [4].