Rock Springs Capital Management’s West Pharmaceutical WST Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	–	Sell	-9,750	Closed	-$2.56M	–	111
2025 Q3	$2.56M	Sell	9,750 -41,280	-81%	-$10M	0.15%	76
2025 Q2	$11.2M	Sell	51,030 -9,220	-15%	-$1.97M	0.7%	50
2025 Q1	$13.5M	Sell	60,250 -108,500	-64%	-$29.9M	0.77%	46
2024 Q4	$55.3M	Buy	168,750 +1,000	+0.6%	+$315K	2.1%	14
2024 Q3	$50.4M	Buy	167,750 +22,250	+15%	+$6.81M	1.64%	20
2024 Q2	$47.9M	Buy	145,500 +8,250	+6%	+$2.92M	1.45%	26
2024 Q1	$54.3M	Hold	137,250	–	–	1.38%	25
2023 Q4	$48.3M	Sell	137,250 -64,750	-32%	-$22.9M	1.19%	28
2023 Q3	$75.8M	Hold	202,000	–	–	2.03%	14
2023 Q2	$77.3M	Hold	202,000	–	–	1.84%	16
2023 Q1	$70M	Buy	202,000 +16,500	+9%	+$4.82M	1.67%	19
2022 Q4	$43.7M	Buy	185,500 +5,000	+3%	+$1.18M	1.05%	36
2022 Q3	$44.4M	Buy	180,500 +69,500	+63%	+$21.2M	1.15%	28
2022 Q2	$33.6M	Buy	111,000 +41,750	+60%	+$13.6M	0.98%	35
2022 Q1	$28.4M	Buy	69,250 +23,750	+52%	+$9.3M	0.72%	46
2021 Q4	$21.3M	Buy	45,500 +15,500	+52%	+$6.67M	0.49%	63
2021 Q3	$12.7M	Buy	30,000 +1,500	+5%	+$632K	0.27%	95
2021 Q2	$10.2M	Hold	28,500	–	–	0.2%	112
2021 Q1	$8.03M	Hold	28,500	–	–	0.18%	123
2020 Q4	$8.07M	Hold	28,500	–	–	0.17%	121
2020 Q3	$7.83M	Sell	28,500 -42,500	-60%	-$11.2M	0.2%	112
2020 Q2	$16.1M	Hold	71,000	–	–	0.44%	76
2020 Q1	$10.8M	Sell	71,000 -81,500	-53%	-$12.5M	0.45%	72
2019 Q4	$22.9M	Hold	152,500	–	–	0.72%	53
2019 Q3	$21.6M	Buy	152,500 +15,000	+11%	+$2.07M	0.86%	42
2019 Q2	$17.2M	Buy	137,500 +12,500	+10%	+$1.48M	0.63%	58
2019 Q1	$13.8M	Sell	125,000 -35,000	-22%	-$3.64M	0.54%	63
2018 Q4	$15.7M	Hold	160,000	–	–	0.74%	40
2018 Q3	$19.8M	Hold	160,000	–	–	0.72%	48
2018 Q2	$15.9M	Buy	+160,000	New	+$14.7M	0.61%	60