William Blair Investment Management’s Bio-Techne TECH Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$129M	Buy	2,462,487 +64,222	+3%	+$3.85M	0.43%	64
2025 Q4	$141M	Buy	2,398,265 +688,603	+40%	+$41.8M	0.39%	66
2025 Q3	$95.1M	Buy	1,709,662 +737,577	+76%	+$39.5M	0.25%	107
2025 Q2	$50M	Sell	972,085 -18,014	-2%	-$905K	0.13%	137
2025 Q1	$58M	Sell	990,099 -84,784	-8%	-$5.75M	0.16%	135
2024 Q4	$77.4M	Sell	1,074,883 -35,352	-3%	-$2.6M	0.19%	124
2024 Q3	$88.7M	Sell	1,110,235 -22,759	-2%	-$1.71M	0.22%	116
2024 Q2	$81.2M	Sell	1,132,994 -1,039,231	-48%	-$76.5M	0.21%	114
2024 Q1	$153M	Sell	2,172,225 -62,773	-3%	-$4.49M	0.4%	80
2023 Q4	$172M	Sell	2,234,998 -79,271	-3%	-$5.22M	0.5%	63
2023 Q3	$158M	Sell	2,314,269 -189	-0%	-$14.9K	0.52%	62
2023 Q2	$189M	Buy	+2,314,458	New	+$186M	0.61%	49
2022 Q2	–	Sell	-1,903,976	Closed	-$206M	–	445
2022 Q1	$206M	Sell	1,903,976 -430,140	-18%	-$44.4M	0.62%	50
2021 Q4	$302M	Sell	2,334,116 -281,260	-11%	-$34.5M	0.82%	27
2021 Q3	$317M	Sell	2,615,376 -108,540	-4%	-$13.2M	0.89%	25
2021 Q2	$307M	Sell	2,723,916 -581,832	-18%	-$61.2M	0.96%	26
2021 Q1	$316M	Buy	3,305,748 +382,580	+13%	+$34.9M	1.02%	18
2020 Q4	$232M	Buy	+2,923,168	New	+$212M	0.77%	36