ICON PLC

Ticker: ICLR CUSIP: G4705A100 Class: SHS

WELCH & FORBES LLC's Holding History (CIK: 0000105495)

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

Q4 2025

Shares 18,710 Value ($000) $3,409 Avg Close $178.08 Range $154.12 - $198.30

Q3 2025

Shares 18,735 Value ($000) $3,279 Avg Close $167.36 Range $139.15 - $211.00

Q2 2025

Shares 18,740 Value ($000) $2,726 Avg Close $141.84 Range $125.10 - $175.88

Q1 2025

Shares 19,280 Value ($000) $3,374 Avg Close $193.87 Range $168.00 - $228.29

Q4 2024

Shares 19,305 Value ($000) $4,048 Avg Close $233.52 Range $183.38 - $303.69

Q3 2024

Shares 19,338 Value ($000) $5,556 Avg Close $315.33 Range $269.08 - $347.72

Q2 2024

Shares 19,638 Value ($000) $6,351 Avg Close $313.39 Range $287.02 - $338.98

Q1 2024

Shares 19,773 Value ($000) $6,643 Avg Close $294.81 Range $244.59 - $344.77

Q4 2023

Shares 20,023 Value ($000) $5,668 Avg Close $258.75 Range $221.20 - $288.50

Q3 2023

Shares 20,023 Value ($000) $4,931 Avg Close $252.02 Range $233.81 - $268.07

Q2 2023

Shares 20,029 Value ($000) $5,011 Avg Close $212.31 Range $181.92 - $252.15

Q1 2023

Shares 20,015 Value ($000) $4,275 Avg Close $222.55 Range $190.73 - $247.47

Q4 2022

Shares 20,015 Value ($000) $3,888 Avg Close $198.26 Range $171.43 - $229.84

Q3 2022

Shares 19,515 Value ($000) $3,586 Avg Close $217.64 Range $179.95 - $249.62

Q2 2022

Shares 19,515 Value ($000) $4,229 Avg Close $224.24 Range $196.34 - $263.62

Q1 2022

Shares 19,540 Value ($000) $4,753 Avg Close $250.60 Range $208.13 - $312.28

Q4 2021

Shares 19,590 Value ($000) $6,068 Avg Close $279.80 Range $254.34 - $313.00

Q3 2021

Shares 19,690 Value ($000) $5,159 Avg Close $243.05 Range $205.10 - $301.72

Q2 2021

Shares 19,690 Value ($000) $4,070 Avg Close $215.79 Range $193.25 - $234.22

Q1 2021

Shares 19,965 Value ($000) $3,920 Avg Close $197.42 Range $168.76 - $223.62

Q4 2020

Shares 19,965 Value ($000) $3,893 Avg Close $195.53 Range $177.52 - $215.29

Q3 2020

Shares 19,965 Value ($000) $3,816 Avg Close $183.83 Range $166.66 - $199.83

Q2 2020

Shares 20,110 Value ($000) $3,388 Avg Close $157.56 Range $127.00 - $173.77

Q1 2020

Shares 20,764 Value ($000) $2,824 Avg Close $160.09 Range $104.28 - $178.99

Q4 2019

Shares 20,914 Value ($000) $3,602 Avg Close $154.22 Range $138.50 - $172.45

Q3 2019

Shares 21,194 Value ($000) $3,122 Avg Close $153.57 Range $145.33 - $165.14

Q2 2019

Shares 21,210 Value ($000) $3,266 Avg Close $140.24 Range $128.52 - $154.40

Q1 2019

Shares 22,750 Value ($000) $3,108 Avg Close $136.30 Range $118.10 - $147.31

Q4 2018

Shares 22,781 Value ($000) $2,944 Avg Close $138.12 Range $119.08 - $155.33

Q3 2018

Shares 22,781 Value ($000) $3,503 Avg Close $143.37 Range $130.22 - $154.10

Q2 2018

Shares 22,881 Value ($000) $3,032 Avg Close $124.66 Range $110.21 - $138.17

Q1 2018

Shares 23,250 Value ($000) $2,747 Avg Close $114.70 Range $101.22 - $124.65

Q3 2017

Shares 24,345 Value ($000) $2,772 Avg Close $106.27 Range $96.03 - $117.53

Q2 2017

Shares 24,445 Value ($000) $2,391 Avg Close $88.44 Range $76.46 - $100.87

Q1 2017

Shares 24,445 Value ($000) $1,949 Avg Close $81.89 Range $74.30 - $88.90

Q4 2016

Shares 24,945 Value ($000) $1,876 Avg Close $77.66 Range $73.76 - $85.74

Q2 2016

Shares 25,295 Value ($000) $1,772 Avg Close $68.64 Range $62.31 - $77.08

Q1 2016

Shares 25,651 Value ($000) $1,927 Avg Close $70.08 Range $64.08 - $77.79

Q3 2015

Shares 27,001 Value ($000) $1,916 Avg Close $75.27 Range $64.27 - $84.14

Q2 2014

Shares 34,555 Value ($000) $1,628 Avg Close $43.18 Range $35.33 - $49.39

Q1 2014

Shares 34,555 Value ($000) $1,643 Avg Close $44.59 Range $38.91 - $50.00

Q3 2013

Shares 35,586 Value ($000) $1,456 Avg Close $38.50 Range $35.50 - $41.29

Q2 2013

Shares 36,344 Value ($000) $1,287 Avg Close $32.90 Range $29.07 - $36.71

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	18,710	$3,409	$178.08	$154.12 - $198.30
Q3 2025	18,735	$3,279	$167.36	$139.15 - $211.00
Q2 2025	18,740	$2,726	$141.84	$125.10 - $175.88
Q1 2025	19,280	$3,374	$193.87	$168.00 - $228.29
Q4 2024	19,305	$4,048	$233.52	$183.38 - $303.69
Q3 2024	19,338	$5,556	$315.33	$269.08 - $347.72
Q2 2024	19,638	$6,351	$313.39	$287.02 - $338.98
Q1 2024	19,773	$6,643	$294.81	$244.59 - $344.77
Q4 2023	20,023	$5,668	$258.75	$221.20 - $288.50
Q3 2023	20,023	$4,931	$252.02	$233.81 - $268.07
Q2 2023	20,029	$5,011	$212.31	$181.92 - $252.15
Q1 2023	20,015	$4,275	$222.55	$190.73 - $247.47
Q4 2022	20,015	$3,888	$198.26	$171.43 - $229.84
Q3 2022	19,515	$3,586	$217.64	$179.95 - $249.62
Q2 2022	19,515	$4,229	$224.24	$196.34 - $263.62
Q1 2022	19,540	$4,753	$250.60	$208.13 - $312.28
Q4 2021	19,590	$6,068	$279.80	$254.34 - $313.00
Q3 2021	19,690	$5,159	$243.05	$205.10 - $301.72
Q2 2021	19,690	$4,070	$215.79	$193.25 - $234.22
Q1 2021	19,965	$3,920	$197.42	$168.76 - $223.62
Q4 2020	19,965	$3,893	$195.53	$177.52 - $215.29
Q3 2020	19,965	$3,816	$183.83	$166.66 - $199.83
Q2 2020	20,110	$3,388	$157.56	$127.00 - $173.77
Q1 2020	20,764	$2,824	$160.09	$104.28 - $178.99
Q4 2019	20,914	$3,602	$154.22	$138.50 - $172.45
Q3 2019	21,194	$3,122	$153.57	$145.33 - $165.14
Q2 2019	21,210	$3,266	$140.24	$128.52 - $154.40
Q1 2019	22,750	$3,108	$136.30	$118.10 - $147.31
Q4 2018	22,781	$2,944	$138.12	$119.08 - $155.33
Q3 2018	22,781	$3,503	$143.37	$130.22 - $154.10
Q2 2018	22,881	$3,032	$124.66	$110.21 - $138.17
Q1 2018	23,250	$2,747	$114.70	$101.22 - $124.65
Q3 2017	24,345	$2,772	$106.27	$96.03 - $117.53
Q2 2017	24,445	$2,391	$88.44	$76.46 - $100.87
Q1 2017	24,445	$1,949	$81.89	$74.30 - $88.90
Q4 2016	24,945	$1,876	$77.66	$73.76 - $85.74
Q2 2016	25,295	$1,772	$68.64	$62.31 - $77.08
Q1 2016	25,651	$1,927	$70.08	$64.08 - $77.79
Q3 2015	27,001	$1,916	$75.27	$64.27 - $84.14
Q2 2014	34,555	$1,628	$43.18	$35.33 - $49.39
Q1 2014	34,555	$1,643	$44.59	$38.91 - $50.00
Q3 2013	35,586	$1,456	$38.50	$35.50 - $41.29
Q2 2013	36,344	$1,287	$32.90	$29.07 - $36.71