0001959173-25-003819.txt : 20250605 0001959173-25-003819.hdr.sgml : 20250605 20250605101348 ACCESSION NUMBER: 0001959173-25-003819 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20250605 DATE AS OF CHANGE: 20250605 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: Lantheus Holdings, Inc. CENTRAL INDEX KEY: 0001521036 STANDARD INDUSTRIAL CLASSIFICATION: IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835] ORGANIZATION NAME: 03 Life Sciences EIN: 352318913 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-36569 FILM NUMBER: 251025991 BUSINESS ADDRESS: STREET 1: 331 TREBLE COVE ROAD CITY: NORTH BILLERICA STATE: MA ZIP: 01862 BUSINESS PHONE: 978 671-8001 MAIL ADDRESS: STREET 1: 331 TREBLE COVE ROAD CITY: NORTH BILLERICA STATE: MA ZIP: 01862 FORMER COMPANY: FORMER CONFORMED NAME: Lantheus MI Holdings, Inc. DATE OF NAME CHANGE: 20110517 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Niedzwiecki Daniel CENTRAL INDEX KEY: 0001861113 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: C/O LANTHEUS HOLDINGS, INC. STREET 2: 331 TREBLE COVE ROAD CITY: NORTH BILLERICA STATE: MA ZIP: 01862 144 1 primary_doc.xml 144 0001861113 XXXXXXXX LIVE 0001521036 Lantheus Holdings, Inc. 001-36569 331 TREBLE COVE ROAD NORTH BILLERICA MA 01862 978 671-8001 Niedzwiecki Daniel Officer Common Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

6000 477900.00 69185836 06/05/2025 NASDAQ Common 03/01/2025 Restricted Stock Vesting Issuer N 1747 03/01/2025 Compensation Common 03/02/2025 Restricted Stock Vesting Issuer N 708 03/02/2025 Compensation Common 03/03/2025 Restricted Stock Vesting Issuer N 3545 03/03/2025 Compensation Y 06/05/2025 03/06/2025 /s/ Jared Cook, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Daniel Niedzwiecki