ICON PLC

Ticker: ICLR CUSIP: G4705A100 Class: SHS

TWO SIGMA ADVISERS, LP's Holding History (CIK: 0001478735)

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

Q2 2023

Shares 10,640 Value ($000) $2,662 Avg Close $212.31 Range $181.92 - $252.15

Q1 2023

Shares 17,640 Value ($000) $3,768 Avg Close $222.55 Range $190.73 - $247.47

Q4 2022

Shares 18,040 Value ($000) $3,504 Avg Close $198.26 Range $171.43 - $229.84

Q3 2022

Shares 28,940 Value ($000) $5,319 Avg Close $217.64 Range $179.95 - $249.62

Q2 2022

Shares 54,775 Value ($000) $11,870 Avg Close $224.24 Range $196.34 - $263.62

Q1 2022

Shares 73,606 Value ($000) $17,902 Avg Close $250.60 Range $208.13 - $312.28

Q4 2021

Shares 300,802 Value ($000) $93,158 Avg Close $279.80 Range $254.34 - $313.00

Q3 2021

Shares 655,763 Value ($000) $171,823 Avg Close $243.05 Range $205.10 - $301.72

Q2 2021

Shares 523,311 Value ($000) $108,174 Avg Close $215.79 Range $193.25 - $234.22

Q1 2021

Shares 205,330 Value ($000) $40,321 Avg Close $197.42 Range $168.76 - $223.62

Q3 2020

Shares 21,630 Value ($000) $4,133 Avg Close $183.83 Range $166.66 - $199.83

Q2 2020

Shares 68,030 Value ($000) $11,460 Avg Close $157.56 Range $127.00 - $173.77

Q1 2020

Shares 65,430 Value ($000) $8,898 Avg Close $160.09 Range $104.28 - $178.99

Q4 2019

Shares 65,230 Value ($000) $11,235 Avg Close $154.22 Range $138.50 - $172.45

Q3 2019

Shares 57,730 Value ($000) $8,506 Avg Close $153.57 Range $145.33 - $165.14

Q2 2019

Shares 101,730 Value ($000) $15,663 Avg Close $140.24 Range $128.52 - $154.40

Q1 2019

Shares 51,530 Value ($000) $7,038 Avg Close $136.30 Range $118.10 - $147.31

Q4 2018

Shares 46,600 Value ($000) $6,021 Avg Close $138.12 Range $119.08 - $155.33

Q3 2018

Shares 57,832 Value ($000) $8,892 Avg Close $143.37 Range $130.22 - $154.10

Q2 2018

Shares 64,062 Value ($000) $8,490 Avg Close $124.66 Range $110.21 - $138.17

Q1 2018

Shares 75,662 Value ($000) $8,939 Avg Close $114.70 Range $101.22 - $124.65

Q4 2017

Shares 94,562 Value ($000) $10,605 Avg Close $115.23 Range $110.54 - $124.48

Q3 2017

Shares 115,585 Value ($000) $13,163 Avg Close $106.27 Range $96.03 - $117.53

Q2 2017

Shares 130,725 Value ($000) $12,784 Avg Close $88.44 Range $76.46 - $100.87

Q1 2017

Shares 63,662 Value ($000) $5,075 Avg Close $81.89 Range $74.30 - $88.90

Q3 2015

Shares 91,398 Value ($000) $6,487 Avg Close $75.27 Range $64.27 - $84.14

Q2 2015

Shares 141,698 Value ($000) $9,536 Avg Close $67.47 Range $62.36 - $71.80

Q1 2015

Shares 130,988 Value ($000) $9,239 Avg Close $61.98 Range $50.91 - $72.40

Q4 2014

Shares 149,688 Value ($000) $7,633 Avg Close $53.92 Range $49.75 - $59.81

Q3 2014

Shares 170,368 Value ($000) $9,750 Avg Close $51.48 Range $45.50 - $57.98

Q2 2014

Shares 217,268 Value ($000) $10,235 Avg Close $43.18 Range $35.33 - $49.39

Q1 2014

Shares 216,478 Value ($000) $10,294 Avg Close $44.59 Range $38.91 - $50.00

Q4 2013

Shares 13,790 Value ($000) $557 Avg Close $39.76 Range $36.42 - $44.23

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2023	10,640	$2,662	$212.31	$181.92 - $252.15
Q1 2023	17,640	$3,768	$222.55	$190.73 - $247.47
Q4 2022	18,040	$3,504	$198.26	$171.43 - $229.84
Q3 2022	28,940	$5,319	$217.64	$179.95 - $249.62
Q2 2022	54,775	$11,870	$224.24	$196.34 - $263.62
Q1 2022	73,606	$17,902	$250.60	$208.13 - $312.28
Q4 2021	300,802	$93,158	$279.80	$254.34 - $313.00
Q3 2021	655,763	$171,823	$243.05	$205.10 - $301.72
Q2 2021	523,311	$108,174	$215.79	$193.25 - $234.22
Q1 2021	205,330	$40,321	$197.42	$168.76 - $223.62
Q3 2020	21,630	$4,133	$183.83	$166.66 - $199.83
Q2 2020	68,030	$11,460	$157.56	$127.00 - $173.77
Q1 2020	65,430	$8,898	$160.09	$104.28 - $178.99
Q4 2019	65,230	$11,235	$154.22	$138.50 - $172.45
Q3 2019	57,730	$8,506	$153.57	$145.33 - $165.14
Q2 2019	101,730	$15,663	$140.24	$128.52 - $154.40
Q1 2019	51,530	$7,038	$136.30	$118.10 - $147.31
Q4 2018	46,600	$6,021	$138.12	$119.08 - $155.33
Q3 2018	57,832	$8,892	$143.37	$130.22 - $154.10
Q2 2018	64,062	$8,490	$124.66	$110.21 - $138.17
Q1 2018	75,662	$8,939	$114.70	$101.22 - $124.65
Q4 2017	94,562	$10,605	$115.23	$110.54 - $124.48
Q3 2017	115,585	$13,163	$106.27	$96.03 - $117.53
Q2 2017	130,725	$12,784	$88.44	$76.46 - $100.87
Q1 2017	63,662	$5,075	$81.89	$74.30 - $88.90
Q3 2015	91,398	$6,487	$75.27	$64.27 - $84.14
Q2 2015	141,698	$9,536	$67.47	$62.36 - $71.80
Q1 2015	130,988	$9,239	$61.98	$50.91 - $72.40
Q4 2014	149,688	$7,633	$53.92	$49.75 - $59.81
Q3 2014	170,368	$9,750	$51.48	$45.50 - $57.98
Q2 2014	217,268	$10,235	$43.18	$35.33 - $49.39
Q1 2014	216,478	$10,294	$44.59	$38.91 - $50.00
Q4 2013	13,790	$557	$39.76	$36.42 - $44.23