VERTEX PHARMACEUTICALS INC

Ticker: VRTX CUSIP: 92532F100 Class: EQTY

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

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

Q4 2025

Shares 1,132 Value ($000) $513 Avg Close $431.03 Range $392.50 - $464.44

Q4 2024

Shares 1,742 Value ($000) $702 Avg Close $463.53 Range $377.85 - $519.88

Q3 2024

Shares 1,272 Value ($000) $592 Avg Close $480.37 Range $456.07 - $510.64

Q2 2024

Shares 544 Value ($000) $255 Avg Close $434.05 Range $391.01 - $486.43

Q4 2020

Shares 652,910 Value ($000) $154,309 Avg Close $229.44 Range $202.57 - $280.99

Q3 2020

Shares 596,479 Value ($000) $162,314 Avg Close $275.88 Range $253.97 - $306.08

Q2 2020

Shares 533,578 Value ($000) $154,903 Avg Close $271.12 Range $222.39 - $299.21

Q1 2020

Shares 627,490 Value ($000) $149,311 Avg Close $229.39 Range $197.47 - $249.85

Q4 2019

Shares 717,668 Value ($000) $157,133 Avg Close $202.38 Range $165.23 - $225.66

Q3 2019

Shares 932,748 Value ($000) $158,026 Avg Close $176.91 Range $165.27 - $188.44

Q2 2019

Shares 791,320 Value ($000) $145,112 Avg Close $174.82 Range $163.68 - $191.71

Q1 2019

Shares 682,226 Value ($000) $125,495 Avg Close $184.70 Range $160.95 - $195.81

Q4 2018

Shares 642,890 Value ($000) $106,533 Avg Close $173.27 Range $151.80 - $194.92

Q3 2018

Shares 549,429 Value ($000) $105,897 Avg Close $178.07 Range $164.70 - $193.78

Q2 2018

Shares 871,856 Value ($000) $148,181 Avg Close $155.01 Range $144.07 - $172.00

Q1 2018

Shares 777,101 Value ($000) $126,652 Avg Close $163.34 Range $146.21 - $178.15

Q4 2017

Shares 618,861 Value ($000) $92,743 Avg Close $148.07 Range $136.50 - $158.04

Q1 2017

Shares 355,880 Value ($000) $38,915 Avg Close $88.04 Range $73.34 - $111.88

Q4 2015

Shares 4,495 Value ($000) $566 Avg Close $120.72 Range $101.49 - $134.71

Q3 2015

Shares 1,961,599 Value ($000) $204,281 Avg Close $128.47 Range $97.45 - $143.45

Q2 2015

Shares 211,541 Value ($000) $26,121 Avg Close $125.98 Range $113.68 - $137.50

Q1 2015

Shares 174,757 Value ($000) $20,616 Avg Close $119.81 Range $103.75 - $136.33

Q4 2014

Shares 284,658 Value ($000) $33,817 Avg Close $112.63 Range $96.43 - $124.35

Q3 2014

Shares 288,886 Value ($000) $32,445 Avg Close $95.21 Range $84.41 - $116.88

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,132	$513	$431.03	$392.50 - $464.44
Q4 2024	1,742	$702	$463.53	$377.85 - $519.88
Q3 2024	1,272	$592	$480.37	$456.07 - $510.64
Q2 2024	544	$255	$434.05	$391.01 - $486.43
Q4 2020	652,910	$154,309	$229.44	$202.57 - $280.99
Q3 2020	596,479	$162,314	$275.88	$253.97 - $306.08
Q2 2020	533,578	$154,903	$271.12	$222.39 - $299.21
Q1 2020	627,490	$149,311	$229.39	$197.47 - $249.85
Q4 2019	717,668	$157,133	$202.38	$165.23 - $225.66
Q3 2019	932,748	$158,026	$176.91	$165.27 - $188.44
Q2 2019	791,320	$145,112	$174.82	$163.68 - $191.71
Q1 2019	682,226	$125,495	$184.70	$160.95 - $195.81
Q4 2018	642,890	$106,533	$173.27	$151.80 - $194.92
Q3 2018	549,429	$105,897	$178.07	$164.70 - $193.78
Q2 2018	871,856	$148,181	$155.01	$144.07 - $172.00
Q1 2018	777,101	$126,652	$163.34	$146.21 - $178.15
Q4 2017	618,861	$92,743	$148.07	$136.50 - $158.04
Q1 2017	355,880	$38,915	$88.04	$73.34 - $111.88
Q4 2015	4,495	$566	$120.72	$101.49 - $134.71
Q3 2015	1,961,599	$204,281	$128.47	$97.45 - $143.45
Q2 2015	211,541	$26,121	$125.98	$113.68 - $137.50
Q1 2015	174,757	$20,616	$119.81	$103.75 - $136.33
Q4 2014	284,658	$33,817	$112.63	$96.43 - $124.35
Q3 2014	288,886	$32,445	$95.21	$84.41 - $116.88