IDEXX LABS INC

Ticker: IDXX CUSIP: 45168D104 Class: COM

CONGRESS ASSET MANAGEMENT CO /MA's Holding History (CIK: 0000897378)

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

Q4 2025

Shares 153,908 Value ($000) $104,123 Avg Close $681.02 Range $600.57 - $769.98

Q3 2025

Shares 1,540 Value ($000) $984 Avg Close $606.98 Range $506.91 - $688.12

Q2 2025

Shares 2,524 Value ($000) $1,354 Avg Close $478.19 Range $356.14 - $537.47

Q1 2025

Shares 2,567 Value ($000) $1,078 Avg Close $434.21 Range $404.60 - $474.67

Q4 2024

Shares 2,932 Value ($000) $1,212 Avg Close $438.63 Range $398.50 - $505.52

Q3 2024

Shares 4,168 Value ($000) $2,106 Avg Close $485.80 Range $446.28 - $530.60

Q2 2024

Shares 4,361 Value ($000) $2,125 Avg Close $502.03 Range $462.00 - $548.88

Q1 2024

Shares 4,499 Value ($000) $2,429 Avg Close $546.49 Range $507.61 - $583.39

Q4 2023

Shares 4,571 Value ($000) $2,537 Avg Close $469.47 Range $372.50 - $568.30

Q3 2023

Shares 5,212 Value ($000) $2,279 Avg Close $498.67 Range $430.81 - $564.74

Q2 2023

Shares 5,567 Value ($000) $2,796 Avg Close $479.21 Range $446.00 - $506.56

Q1 2023

Shares 5,521 Value ($000) $2,761 Avg Close $478.56 Range $399.27 - $515.79

Q4 2022

Shares 5,111 Value ($000) $2,085 Avg Close $388.17 Range $317.06 - $448.01

Q3 2022

Shares 3,897 Value ($000) $1,270 Avg Close $367.34 Range $321.79 - $417.77

Q2 2022

Shares 10,008 Value ($000) $3,510 Avg Close $407.78 Range $318.50 - $558.01

Q1 2022

Shares 8,767 Value ($000) $4,796 Avg Close $526.03 Range $460.36 - $656.31

Q4 2021

Shares 14,233 Value ($000) $9,372 Avg Close $627.75 Range $575.59 - $672.93

Q3 2021

Shares 21,421 Value ($000) $13,322 Avg Close $671.94 Range $620.86 - $706.95

Q2 2021

Shares 221,601 Value ($000) $139,952 Avg Close $552.18 Range $482.90 - $639.65

Q1 2021

Shares 223,399 Value ($000) $109,311 Avg Close $501.01 Range $455.23 - $573.99

Q4 2020

Shares 227,517 Value ($000) $113,729 Avg Close $447.44 Range $382.68 - $503.83

Q3 2020

Shares 237,304 Value ($000) $93,287 Avg Close $369.71 Range $329.69 - $407.86

Q2 2020

Shares 237,862 Value ($000) $78,533 Avg Close $289.54 Range $226.02 - $332.68

Q1 2020

Shares 222,053 Value ($000) $53,790 Avg Close $260.97 Range $168.65 - $296.25

Q4 2019

Shares 1,118 Value ($000) $292 Avg Close $263.51 Range $246.74 - $294.57

Q3 2019

Shares 1,118 Value ($000) $304 Avg Close $278.27 Range $256.27 - $292.17

Q2 2019

Shares 1,118 Value ($000) $308 Avg Close $246.39 Range $214.25 - $278.61

Q1 2019

Shares 1,338 Value ($000) $299 Avg Close $206.43 Range $176.11 - $226.15

Q4 2018

Shares 1,387 Value ($000) $258 Avg Close $205.02 Range $176.15 - $252.69

Q3 2018

Shares 1,387 Value ($000) $346 Avg Close $242.74 Range $215.28 - $256.22

Q2 2018

Shares 1,387 Value ($000) $302 Avg Close $206.05 Range $183.86 - $229.01

Q1 2018

Shares 1,640 Value ($000) $314 Avg Close $184.56 Range $157.53 - $207.14

Q4 2017

Shares 1,903 Value ($000) $298 Avg Close $157.41 Range $146.09 - $168.66

Q3 2017

Shares 2,078 Value ($000) $323 Avg Close $158.10 Range $148.80 - $171.37

Q2 2017

Shares 2,176 Value ($000) $351 Avg Close $162.40 Range $153.24 - $173.01

Q1 2017

Shares 2,218 Value ($000) $343 Avg Close $137.84 Range $113.92 - $155.65

Q4 2016

Shares 2,628 Value ($000) $308 Avg Close $114.12 Range $102.45 - $121.77

Q3 2016

Shares 2,516 Value ($000) $284 Avg Close $105.39 Range $92.52 - $115.06

Q2 2016

Shares 2,724 Value ($000) $253 Avg Close $85.88 Range $76.55 - $92.87

Q1 2016

Shares 468,291 Value ($000) $36,677 Avg Close $72.01 Range $63.48 - $79.03

Q4 2015

Shares 444,184 Value ($000) $32,390 Avg Close $71.33 Range $65.03 - $77.27

Q3 2015

Shares 450,153 Value ($000) $33,424 Avg Close $71.63 Range $61.58 - $79.62

Q2 2015

Shares 303,571 Value ($000) $19,471 Avg Close $69.23 Range $61.37 - $82.24

Q1 2015

Shares 186,277 Value ($000) $28,776 Avg Close $77.81 Range $72.38 - $84.25

Q4 2014

Shares 151,583 Value ($000) $22,475 Avg Close $70.12 Range $57.56 - $76.94

Q3 2014

Shares 191,534 Value ($000) $22,568 Avg Close $63.22 Range $56.74 - $70.00

Q2 2014

Shares 173,963 Value ($000) $23,236 Avg Close $63.58 Range $57.92 - $68.06

Q1 2014

Shares 167,613 Value ($000) $20,348 Avg Close $59.57 Range $52.32 - $64.64

Q4 2013

Shares 114,531 Value ($000) $12,183 Avg Close $52.63 Range $49.56 - $56.55

Q3 2013

Shares 141,282 Value ($000) $14,079 Avg Close $48.06 Range $43.99 - $50.19

Q2 2013

Shares 134,375 Value ($000) $12,052 Avg Close $43.69 Range $40.78 - $46.30

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	153,908	$104,123	$681.02	$600.57 - $769.98
Q3 2025	1,540	$984	$606.98	$506.91 - $688.12
Q2 2025	2,524	$1,354	$478.19	$356.14 - $537.47
Q1 2025	2,567	$1,078	$434.21	$404.60 - $474.67
Q4 2024	2,932	$1,212	$438.63	$398.50 - $505.52
Q3 2024	4,168	$2,106	$485.80	$446.28 - $530.60
Q2 2024	4,361	$2,125	$502.03	$462.00 - $548.88
Q1 2024	4,499	$2,429	$546.49	$507.61 - $583.39
Q4 2023	4,571	$2,537	$469.47	$372.50 - $568.30
Q3 2023	5,212	$2,279	$498.67	$430.81 - $564.74
Q2 2023	5,567	$2,796	$479.21	$446.00 - $506.56
Q1 2023	5,521	$2,761	$478.56	$399.27 - $515.79
Q4 2022	5,111	$2,085	$388.17	$317.06 - $448.01
Q3 2022	3,897	$1,270	$367.34	$321.79 - $417.77
Q2 2022	10,008	$3,510	$407.78	$318.50 - $558.01
Q1 2022	8,767	$4,796	$526.03	$460.36 - $656.31
Q4 2021	14,233	$9,372	$627.75	$575.59 - $672.93
Q3 2021	21,421	$13,322	$671.94	$620.86 - $706.95
Q2 2021	221,601	$139,952	$552.18	$482.90 - $639.65
Q1 2021	223,399	$109,311	$501.01	$455.23 - $573.99
Q4 2020	227,517	$113,729	$447.44	$382.68 - $503.83
Q3 2020	237,304	$93,287	$369.71	$329.69 - $407.86
Q2 2020	237,862	$78,533	$289.54	$226.02 - $332.68
Q1 2020	222,053	$53,790	$260.97	$168.65 - $296.25
Q4 2019	1,118	$292	$263.51	$246.74 - $294.57
Q3 2019	1,118	$304	$278.27	$256.27 - $292.17
Q2 2019	1,118	$308	$246.39	$214.25 - $278.61
Q1 2019	1,338	$299	$206.43	$176.11 - $226.15
Q4 2018	1,387	$258	$205.02	$176.15 - $252.69
Q3 2018	1,387	$346	$242.74	$215.28 - $256.22
Q2 2018	1,387	$302	$206.05	$183.86 - $229.01
Q1 2018	1,640	$314	$184.56	$157.53 - $207.14
Q4 2017	1,903	$298	$157.41	$146.09 - $168.66
Q3 2017	2,078	$323	$158.10	$148.80 - $171.37
Q2 2017	2,176	$351	$162.40	$153.24 - $173.01
Q1 2017	2,218	$343	$137.84	$113.92 - $155.65
Q4 2016	2,628	$308	$114.12	$102.45 - $121.77
Q3 2016	2,516	$284	$105.39	$92.52 - $115.06
Q2 2016	2,724	$253	$85.88	$76.55 - $92.87
Q1 2016	468,291	$36,677	$72.01	$63.48 - $79.03
Q4 2015	444,184	$32,390	$71.33	$65.03 - $77.27
Q3 2015	450,153	$33,424	$71.63	$61.58 - $79.62
Q2 2015	303,571	$19,471	$69.23	$61.37 - $82.24
Q1 2015	186,277	$28,776	$77.81	$72.38 - $84.25
Q4 2014	151,583	$22,475	$70.12	$57.56 - $76.94
Q3 2014	191,534	$22,568	$63.22	$56.74 - $70.00
Q2 2014	173,963	$23,236	$63.58	$57.92 - $68.06
Q1 2014	167,613	$20,348	$59.57	$52.32 - $64.64
Q4 2013	114,531	$12,183	$52.63	$49.56 - $56.55
Q3 2013	141,282	$14,079	$48.06	$43.99 - $50.19
Q2 2013	134,375	$12,052	$43.69	$40.78 - $46.30