0001521036 2023-03-17 2023-03-17 true 0001521036 8-K/A 2023-03-17 LANTHEUS HOLDINGS, INC. DE 001-36569 35-2318913 201 Burlington Road South Building Bedford MA 01730 (978) 671-8001 false false false false Common stock, par value $0.01 per share LNTH NASDAQ false This Amendment No. 1 to Current Report on Form 8-K/A (the “Amendment”) amends and restates in its entirety the Current Report on Form 8-K (the “Initial 8-K”) filed by Lantheus Holdings, Inc. (the “Company”) on March 17, 2023 solely to add a new sentence to the end of paragraph one under Item 5.02 below. All other information in the Initial 8-K remains unchanged.