SHAREHOLDER ALERT: Levi & Korsinsky, LLP Notifies Investors It Has Filed a Complaint to Recover Losses Suffered by Purchasers of Lantheus Holdings, Inc. Securities and Sets a Lead Plaintiff Deadline of November 10, 2025

Core Viewpoint - A class action lawsuit has been initiated against Lantheus Holdings, Inc. due to allegations of misleading statements regarding the competitive position of its product Pylarify, which led to inflated stock prices and subsequent losses for investors [1][3]. Company Performance - Lantheus reported disappointing first quarter results on May 7, 2025, with Pylarify's performance falling short of market expectations [4]. - On August 6, 2025, Lantheus announced further disappointing results, revealing an 8.3% year-over-year decline in Pylarify's performance and significantly reduced growth projections for fiscal year 2025 [4]. Stock Market Reaction - Following the negative announcements, Lantheus' stock price plummeted from $72.83 per share on August 5, 2025, to $51.87 per share on August 6, 2025, marking a decline of approximately 28.8% in just one day [5].