Lantheus Holdings, Inc.

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC LNTH

Report date

12/31/2025

Quarter

2025 Q4

Filed

2/9/2026

Shares

522,177

Value ($000)

34,751

Weight

0.1%

2021 Q2 - 2025 Q4 (19 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2025 Q4	2/9/2026	34,751	0.1%	522,177	12/31/2025
2025 Q3	11/12/2025	29,475	0.1%	574,681	9/30/2025
2025 Q2	7/29/2025	32,058	0.1%	391,622	6/30/2025
2025 Q1	5/9/2025	35,504	0.1%	363,767	3/31/2025
2024 Q4	2/10/2025	34,024	0.1%	380,324	12/31/2024
2024 Q3	11/8/2024	40,726	0.1%	371,079	9/30/2024
2024 Q2	8/8/2024	40,593	0.1%	505,581	6/30/2024
2024 Q1	5/8/2024	34,844	0.1%	559,834	3/31/2024
2023 Q4	2/9/2024	34,516	0.1%	556,710	12/31/2023
2023 Q3	11/9/2023	23,763	0.1%	342,008	9/30/2023
2023 Q2	8/11/2023	27,506	0.1%	327,765	6/30/2023
2023 Q1	5/12/2023	41,796	0.1%	506,247	3/31/2023
2022 Q4	2/9/2023	29,951	0.1%	587,743	12/31/2022
2022 Q3	11/9/2022	42,080	0.2%	598,328	9/30/2022
2022 Q2	8/10/2022	51,448	0.2%	779,163	6/30/2022
2022 Q1	5/11/2022	67,351	0.2%	1,217,707	3/31/2022
2021 Q4	2/14/2022	63,934	0.2%	2,213,029	12/31/2021
2021 Q3	11/10/2021	67,570	0.2%	2,631,246	9/30/2021
2021 Q2	8/12/2021	155	0.0%	5,600	6/30/2021