RADNOR, Pa., Sept. 17, 2025 (GLOBE NEWSWIRE) -- The law firm of Kessler Topaz Meltzer & Check, LLP (www.ktmc.com) informs investors that a securities class action lawsuit has been filed against Lantheus Holdings, Inc. (“Lantheus”) (NASDAQ: LNTH) on behalf of those who purchased or otherwise acquired Lantheus securities between February 26, 2025, and August 5, 2025, inclusive (the “Class Period”). The lead plaintiff deadline is November 10, 2025. CONTACT KESSLER TOPAZ MELTZER & CHECK, LLP: If you suffered La ...