Portnoy Law Firm Announces Class Action on Behalf of Lantheus Holdings, Inc. Investors

Core Viewpoint - Lantheus Holdings, Inc. is facing a class action lawsuit due to allegations of misleading investors regarding the performance and pricing of its key product, Pylarify, which has led to significant stock price declines [3]. Group 1: Legal Action - The Portnoy Law Firm is advising Lantheus investors who purchased securities between February 26, 2025, and August 5, 2025, to file a lead plaintiff motion by November 10, 2025 [1]. - Investors can contact attorney Lesley F. Portnoy for a complimentary case evaluation and to discuss their legal rights [2]. Group 2: Allegations and Impact - The complaint claims that Lantheus and its executives misled investors about the growth and pricing strength of Pylarify, asserting that market leadership and premium pricing would support revenue growth while concealing competitive pressures [3]. - Following the release of quarterly results in May and August 2025, which showed sharp sales declines and reduced guidance, Lantheus' stock dropped over 23% and 28% respectively [3].