WEST PHARMACEUTICAL SVSC INC

Ticker: WST CUSIP: 955306105 Class: EQTY

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 300,404 Value ($000) $82,653 Avg Close $273.43 Range $253.32 - $322.08

Q3 2025

Shares 220,964 Value ($000) $57,965 Avg Close $242.79 Range $206.46 - $290.53

Q2 2025

Shares 129,030 Value ($000) $28,232 Avg Close $213.36 Range $186.94 - $229.90

Q1 2025

Shares 41,351 Value ($000) $9,258 Avg Close $274.80 Range $196.50 - $347.77

Q1 2023

Shares 4,508 Value ($000) $2 Avg Close $290.04 Range $223.87 - $346.10

Q4 2022

Shares 1,210 Value ($000) $0 Avg Close $235.00 Range $204.38 - $262.37

Q2 2022

Shares 77,108 Value ($000) $23,315 Avg Close $322.31 Range $273.30 - $419.82

Q1 2022

Shares 256,693 Value ($000) $105,426 Avg Close $387.59 Range $345.71 - $463.22

Q4 2021

Shares 506,874 Value ($000) $237,729 Avg Close $425.92 Range $394.87 - $470.10

Q3 2021

Shares 515,148 Value ($000) $218,701 Avg Close $416.99 Range $355.08 - $470.24

Q2 2021

Shares 361,968 Value ($000) $129,983 Avg Close $326.67 Range $275.63 - $360.44

Q1 2021

Shares 378,363 Value ($000) $106,615 Avg Close $282.81 Range $250.88 - $308.28

Q4 2020

Shares 248,836 Value ($000) $70,498 Avg Close $277.09 Range $256.63 - $301.25

Q3 2020

Shares 186,516 Value ($000) $51,273 Avg Close $261.19 Range $219.97 - $284.94

Q2 2020

Shares 24,513 Value ($000) $5,569 Avg Close $193.81 Range $143.68 - $224.89

Q1 2020

Shares 100,723 Value ($000) $15,335 Avg Close $151.68 Range $122.74 - $174.12

Q4 2019

Shares 35,135 Value ($000) $5,282 Avg Close $143.32 Range $134.47 - $149.78

Q3 2019

Shares 138,602 Value ($000) $19,657 Avg Close $135.38 Range $118.14 - $149.59

Q2 2019

Shares 112,173 Value ($000) $14,038 Avg Close $115.92 Range $107.93 - $123.63

Q1 2019

Shares 78,611 Value ($000) $8,663 Avg Close $102.01 Range $91.18 - $108.30

Q2 2018

Shares 11,700 Value ($000) $1,162 Avg Close $89.91 Range $80.71 - $99.79

Q3 2017

Shares 3,800 Value ($000) $366 Avg Close $87.99 Range $77.83 - $94.16

Q2 2017

Shares 140,913 Value ($000) $13,319 Avg Close $89.32 Range $75.60 - $97.04

Q1 2017

Shares 56,813 Value ($000) $4,637 Avg Close $81.07 Range $76.66 - $85.49

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	300,404	$82,653	$273.43	$253.32 - $322.08
Q3 2025	220,964	$57,965	$242.79	$206.46 - $290.53
Q2 2025	129,030	$28,232	$213.36	$186.94 - $229.90
Q1 2025	41,351	$9,258	$274.80	$196.50 - $347.77
Q1 2023	4,508	$2	$290.04	$223.87 - $346.10
Q4 2022	1,210	$0	$235.00	$204.38 - $262.37
Q2 2022	77,108	$23,315	$322.31	$273.30 - $419.82
Q1 2022	256,693	$105,426	$387.59	$345.71 - $463.22
Q4 2021	506,874	$237,729	$425.92	$394.87 - $470.10
Q3 2021	515,148	$218,701	$416.99	$355.08 - $470.24
Q2 2021	361,968	$129,983	$326.67	$275.63 - $360.44
Q1 2021	378,363	$106,615	$282.81	$250.88 - $308.28
Q4 2020	248,836	$70,498	$277.09	$256.63 - $301.25
Q3 2020	186,516	$51,273	$261.19	$219.97 - $284.94
Q2 2020	24,513	$5,569	$193.81	$143.68 - $224.89
Q1 2020	100,723	$15,335	$151.68	$122.74 - $174.12
Q4 2019	35,135	$5,282	$143.32	$134.47 - $149.78
Q3 2019	138,602	$19,657	$135.38	$118.14 - $149.59
Q2 2019	112,173	$14,038	$115.92	$107.93 - $123.63
Q1 2019	78,611	$8,663	$102.01	$91.18 - $108.30
Q2 2018	11,700	$1,162	$89.91	$80.71 - $99.79
Q3 2017	3,800	$366	$87.99	$77.83 - $94.16
Q2 2017	140,913	$13,319	$89.32	$75.60 - $97.04
Q1 2017	56,813	$4,637	$81.07	$76.66 - $85.49