Overview

• A securities class action has been filed on behalf of investors who bought Lantheus shares between February 26 and August 5, 2025.
• Complaints claim the company misled investors about Pylarify’s competitive position and failed to disclose risks tied to an early‑2025 price increase.
• Kessler Topaz Meltzer & Check, Bernstein Liebhard, and Faruqi & Faruqi are soliciting class members, and Kessler says it did not file the complaint.
• Investors seeking appointment as lead plaintiff must file by November 10, 2025, though recovery eligibility does not require serving in that role.
• Notices recount that Lantheus’ May 7 and August 6 disclosures showed weaker Pylarify sales and reduced growth outlook, and the stock fell about 29% on August 6.