William Blair Investment Management’s Advanced Drainage Systems WMS Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$89.9M	Sell	655,684 -32,363	-5%	-$5.01M	0.3%	96
2025 Q4	$99.6M	Sell	688,047 -132,156	-16%	-$19.1M	0.28%	100
2025 Q3	$114M	Sell	820,203 -113,392	-12%	-$14.9M	0.29%	94
2025 Q2	$107M	Sell	933,595 -79,660	-8%	-$8.92M	0.28%	93
2025 Q1	$110M	Sell	1,013,255 -26,844	-3%	-$3.13M	0.31%	92
2024 Q4	$120M	Sell	1,040,099 -103,380	-9%	-$14.3M	0.29%	103
2024 Q3	$180M	Sell	1,143,479 -286,612	-20%	-$44.8M	0.44%	71
2024 Q2	$229M	Buy	1,430,091 +64,618	+5%	+$10.8M	0.6%	40
2024 Q1	$235M	Sell	1,365,473 -22,592	-2%	-$3.4M	0.61%	41
2023 Q4	$195M	Sell	1,388,065 -57,261	-4%	-$6.9M	0.57%	51
2023 Q3	$165M	Buy	1,445,326 +169,517	+13%	+$20.7M	0.55%	56
2023 Q2	$145M	Sell	1,275,809 -260,613	-17%	-$24.6M	0.47%	72
2023 Q1	$129M	Buy	1,536,422 +327,658	+27%	+$28.8M	0.45%	75
2022 Q4	$99.1M	Sell	1,208,764 -72,385	-6%	-$7.34M	0.38%	91
2022 Q3	$159M	Buy	1,281,149 +404,015	+46%	+$50.3M	0.63%	52
2022 Q2	$79M	Buy	+877,134	New	+$90.2M	0.29%	109
2015 Q4	–	Sell	-229,553	Closed	-$6.64M	–	473
2015 Q3	$6.64M	Buy	+229,553	New	+$6.65M	0.01%	768