William Blair Investment Management’s Lantheus LNTH Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$30.3M	Sell	399,551 -122,626	-23%	-$8.8M	0.1%	188
2025 Q4	$34.8M	Sell	522,177 -52,504	-9%	-$3.06M	0.1%	178
2025 Q3	$29.5M	Buy	574,681 +183,059	+47%	+$11.4M	0.08%	218
2025 Q2	$32.1M	Buy	391,622 +27,855	+8%	+$2.45M	0.09%	192
2025 Q1	$35.5M	Sell	363,767 -16,557	-4%	-$1.55M	0.1%	182
2024 Q4	$34M	Buy	380,324 +9,245	+2%	+$901K	0.08%	221
2024 Q3	$40.7M	Sell	371,079 -134,502	-27%	-$14M	0.1%	163
2024 Q2	$40.6M	Sell	505,581 -54,253	-10%	-$3.98M	0.11%	162
2024 Q1	$34.8M	Buy	559,834 +3,124	+0.6%	+$184K	0.09%	213
2023 Q4	$34.5M	Buy	556,710 +214,702	+63%	+$14.5M	0.1%	201
2023 Q3	$23.8M	Buy	342,008 +14,243	+4%	+$1.04M	0.08%	247
2023 Q2	$27.5M	Sell	327,765 -178,482	-35%	-$16M	0.09%	242
2023 Q1	$41.8M	Sell	506,247 -81,496	-14%	-$5.26M	0.15%	143
2022 Q4	$30M	Sell	587,743 -10,585	-2%	-$653K	0.11%	202
2022 Q3	$42.1M	Sell	598,328 -180,835	-23%	-$13.7M	0.17%	126
2022 Q2	$51.4M	Sell	779,163 -438,544	-36%	-$27.6M	0.19%	128
2022 Q1	$67.4M	Sell	1,217,707 -995,322	-45%	-$37.3M	0.2%	134
2021 Q4	$63.9M	Sell	2,213,029 -418,217	-16%	-$11.1M	0.17%	141
2021 Q3	$67.6M	Buy	2,631,246 +2,625,646	+46,887%	+$68.6M	0.19%	130
2021 Q2	$155K	Buy	+5,600	New	+$129K	﹤0.01%	367