WATERS CORP

Ticker: WAT CUSIP: 941848103 Class: COM

MOUNTAIN PACIFIC INVESTMENT ADVISERS INC/ID's Holding History (CIK: 0001067324)

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

Q4 2025

Shares 8,472 Value ($000) $3,218 Avg Close $367.96 Range $299.63 - $414.15

Q3 2025

Shares 8,691 Value ($000) $2,606 Avg Close $301.75 Range $275.05 - $366.68

Q2 2025

Shares 8,891 Value ($000) $3,103 Avg Close $343.81 Range $297.14 - $368.02

Q1 2025

Shares 10,181 Value ($000) $3,752 Avg Close $387.18 Range $355.00 - $423.56

Q4 2024

Shares 10,656 Value ($000) $3,953 Avg Close $365.79 Range $321.32 - $397.02

Q3 2024

Shares 11,058 Value ($000) $3,980 Avg Close $325.56 Range $279.24 - $363.55

Q2 2024

Shares 11,183 Value ($000) $3,244 Avg Close $319.12 Range $283.59 - $367.21

Q1 2024

Shares 11,478 Value ($000) $3,951 Avg Close $328.72 Range $293.46 - $363.80

Q4 2023

Shares 11,469 Value ($000) $3,776 Avg Close $276.19 Range $231.90 - $335.40

Q3 2023

Shares 11,435 Value ($000) $3,136 Avg Close $276.34 Range $256.06 - $300.77

Q2 2023

Shares 11,615 Value ($000) $3,096 Avg Close $278.30 Range $248.18 - $313.25

Q1 2023

Shares 11,955 Value ($000) $3,702 Avg Close $323.46 Range $291.95 - $350.97

Q4 2022

Shares 12,275 Value ($000) $4,205 Avg Close $316.35 Range $265.61 - $353.71

Q3 2022

Shares 12,329 Value ($000) $3,323 Avg Close $319.20 Range $269.37 - $369.00

Q2 2022

Shares 12,538 Value ($000) $4,150 Avg Close $317.42 Range $288.32 - $344.15

Q1 2022

Shares 12,788 Value ($000) $3,969 Avg Close $325.36 Range $297.65 - $372.24

Q4 2021

Shares 13,376 Value ($000) $4,984 Avg Close $349.78 Range $324.35 - $375.24

Q3 2021

Shares 13,782 Value ($000) $4,924 Avg Close $391.72 Range $343.15 - $428.22

Q2 2021

Shares 14,030 Value ($000) $4,849 Avg Close $316.51 Range $279.69 - $349.07

Q1 2021

Shares 14,030 Value ($000) $3,987 Avg Close $273.06 Range $244.77 - $299.06

Q4 2020

Shares 13,994 Value ($000) $3,462 Avg Close $226.59 Range $192.54 - $252.67

Q3 2020

Shares 34,307 Value ($000) $6,713 Avg Close $207.83 Range $179.76 - $239.74

Q2 2020

Shares 45,494 Value ($000) $8,207 Avg Close $189.00 Range $171.38 - $210.90

Q1 2020

Shares 75,779 Value ($000) $13,796 Avg Close $210.92 Range $154.39 - $245.68

Q4 2019

Shares 86,660 Value ($000) $20,248 Avg Close $220.88 Range $204.58 - $236.37

Q3 2019

Shares 91,773 Value ($000) $20,486 Avg Close $215.83 Range $199.87 - $237.51

Q2 2019

Shares 92,197 Value ($000) $19,844 Avg Close $218.51 Range $199.11 - $255.21

Q1 2019

Shares 92,535 Value ($000) $23,292 Avg Close $227.86 Range $174.95 - $252.24

Q4 2018

Shares 98,314 Value ($000) $18,547 Avg Close $189.96 Range $167.94 - $204.64

Q3 2018

Shares 98,154 Value ($000) $19,109 Avg Close $193.64 Range $184.81 - $202.79

Q2 2018

Shares 111,214 Value ($000) $21,530 Avg Close $196.97 Range $187.28 - $211.78

Q1 2018

Shares 111,399 Value ($000) $22,129 Avg Close $206.81 Range $187.66 - $220.20

Q4 2017

Shares 111,649 Value ($000) $21,569 Avg Close $193.09 Range $179.27 - $201.95

Q3 2017

Shares 111,274 Value ($000) $19,976 Avg Close $181.32 Range $171.32 - $190.39

Q2 2017

Shares 110,624 Value ($000) $20,337 Avg Close $173.76 Range $154.15 - $187.65

Q1 2017

Shares 110,274 Value ($000) $17,237 Avg Close $149.35 Range $134.68 - $158.81

Q4 2016

Shares 109,974 Value ($000) $14,779 Avg Close $142.72 Range $133.35 - $160.00

Q3 2016

Shares 109,974 Value ($000) $17,430 Avg Close $154.74 Range $140.50 - $162.53

Q2 2016

Shares 111,550 Value ($000) $15,690 Avg Close $135.27 Range $128.90 - $140.75

Q1 2016

Shares 111,450 Value ($000) $14,702 Avg Close $124.75 Range $112.00 - $133.02

Q4 2015

Shares 111,880 Value ($000) $15,057 Avg Close $128.50 Range $115.21 - $136.95

Q3 2015

Shares 113,855 Value ($000) $13,459 Avg Close $126.49 Range $113.98 - $136.17

Q2 2015

Shares 114,855 Value ($000) $14,745 Avg Close $129.76 Range $120.79 - $137.39

Q1 2015

Shares 113,730 Value ($000) $14,139 Avg Close $119.29 Range $111.77 - $125.86

Q4 2014

Shares 107,280 Value ($000) $12,093 Avg Close $109.55 Range $93.56 - $117.71

Q3 2014

Shares 106,350 Value ($000) $10,541 Avg Close $103.09 Range $99.08 - $108.89

Q2 2014

Shares 112,150 Value ($000) $11,713 Avg Close $105.18 Range $97.86 - $114.36

Q1 2014

Shares 111,700 Value ($000) $12,109 Avg Close $108.40 Range $97.90 - $115.06

Q4 2013

Shares 109,000 Value ($000) $10,900 Avg Close $100.80 Range $94.50 - $107.13

Q3 2013

Shares 110,450 Value ($000) $11,731 Avg Close $102.55 Range $97.53 - $108.89

Q2 2013

Shares 109,950 Value ($000) $11,000 Avg Close $95.76 Range $87.85 - $102.69

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	8,472	$3,218	$367.96	$299.63 - $414.15
Q3 2025	8,691	$2,606	$301.75	$275.05 - $366.68
Q2 2025	8,891	$3,103	$343.81	$297.14 - $368.02
Q1 2025	10,181	$3,752	$387.18	$355.00 - $423.56
Q4 2024	10,656	$3,953	$365.79	$321.32 - $397.02
Q3 2024	11,058	$3,980	$325.56	$279.24 - $363.55
Q2 2024	11,183	$3,244	$319.12	$283.59 - $367.21
Q1 2024	11,478	$3,951	$328.72	$293.46 - $363.80
Q4 2023	11,469	$3,776	$276.19	$231.90 - $335.40
Q3 2023	11,435	$3,136	$276.34	$256.06 - $300.77
Q2 2023	11,615	$3,096	$278.30	$248.18 - $313.25
Q1 2023	11,955	$3,702	$323.46	$291.95 - $350.97
Q4 2022	12,275	$4,205	$316.35	$265.61 - $353.71
Q3 2022	12,329	$3,323	$319.20	$269.37 - $369.00
Q2 2022	12,538	$4,150	$317.42	$288.32 - $344.15
Q1 2022	12,788	$3,969	$325.36	$297.65 - $372.24
Q4 2021	13,376	$4,984	$349.78	$324.35 - $375.24
Q3 2021	13,782	$4,924	$391.72	$343.15 - $428.22
Q2 2021	14,030	$4,849	$316.51	$279.69 - $349.07
Q1 2021	14,030	$3,987	$273.06	$244.77 - $299.06
Q4 2020	13,994	$3,462	$226.59	$192.54 - $252.67
Q3 2020	34,307	$6,713	$207.83	$179.76 - $239.74
Q2 2020	45,494	$8,207	$189.00	$171.38 - $210.90
Q1 2020	75,779	$13,796	$210.92	$154.39 - $245.68
Q4 2019	86,660	$20,248	$220.88	$204.58 - $236.37
Q3 2019	91,773	$20,486	$215.83	$199.87 - $237.51
Q2 2019	92,197	$19,844	$218.51	$199.11 - $255.21
Q1 2019	92,535	$23,292	$227.86	$174.95 - $252.24
Q4 2018	98,314	$18,547	$189.96	$167.94 - $204.64
Q3 2018	98,154	$19,109	$193.64	$184.81 - $202.79
Q2 2018	111,214	$21,530	$196.97	$187.28 - $211.78
Q1 2018	111,399	$22,129	$206.81	$187.66 - $220.20
Q4 2017	111,649	$21,569	$193.09	$179.27 - $201.95
Q3 2017	111,274	$19,976	$181.32	$171.32 - $190.39
Q2 2017	110,624	$20,337	$173.76	$154.15 - $187.65
Q1 2017	110,274	$17,237	$149.35	$134.68 - $158.81
Q4 2016	109,974	$14,779	$142.72	$133.35 - $160.00
Q3 2016	109,974	$17,430	$154.74	$140.50 - $162.53
Q2 2016	111,550	$15,690	$135.27	$128.90 - $140.75
Q1 2016	111,450	$14,702	$124.75	$112.00 - $133.02
Q4 2015	111,880	$15,057	$128.50	$115.21 - $136.95
Q3 2015	113,855	$13,459	$126.49	$113.98 - $136.17
Q2 2015	114,855	$14,745	$129.76	$120.79 - $137.39
Q1 2015	113,730	$14,139	$119.29	$111.77 - $125.86
Q4 2014	107,280	$12,093	$109.55	$93.56 - $117.71
Q3 2014	106,350	$10,541	$103.09	$99.08 - $108.89
Q2 2014	112,150	$11,713	$105.18	$97.86 - $114.36
Q1 2014	111,700	$12,109	$108.40	$97.90 - $115.06
Q4 2013	109,000	$10,900	$100.80	$94.50 - $107.13
Q3 2013	110,450	$11,731	$102.55	$97.53 - $108.89
Q2 2013	109,950	$11,000	$95.76	$87.85 - $102.69