AON PLC

Ticker: AON CUSIP: G0403H108 Class: SHS CL A

CANTILLON CAPITAL MANAGEMENT LLC's Holding History (CIK: 0001279936)

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

Q4 2025

Shares 1,243,018 Value ($000) $438,636 Avg Close $349.16 Range $324.28 - $370.31

Q3 2025

Shares 1,233,741 Value ($000) $439,927 Avg Close $361.49 Range $345.06 - $380.20

Q2 2025

Shares 1,247,354 Value ($000) $445,006 Avg Close $361.30 Range $322.37 - $399.35

Q1 2025

Shares 1,283,548 Value ($000) $512,251 Avg Close $381.59 Range $343.99 - $411.24

Q4 2024

Shares 1,323,228 Value ($000) $475,251 Avg Close $365.26 Range $339.24 - $392.96

Q3 2024

Shares 1,316,218 Value ($000) $455,398 Avg Close $324.38 Range $288.84 - $350.77

Q2 2024

Shares 1,138,262 Value ($000) $334,171 Avg Close $292.51 Range $264.78 - $328.92

Q1 2024

Shares 1,196,190 Value ($000) $399,193 Avg Close $306.03 Range $281.78 - $331.94

Q4 2023

Shares 1,220,174 Value ($000) $355,095 Avg Close $315.32 Range $280.78 - $332.21

Q3 2023

Shares 1,249,967 Value ($000) $405,264 Avg Close $325.28 Range $307.94 - $339.08

Q2 2023

Shares 1,254,848 Value ($000) $433,174 Avg Close $318.69 Range $301.32 - $341.07

Q1 2023

Shares 1,179,916 Value ($000) $372,016 Avg Close $303.19 Range $275.29 - $321.21

Q4 2022

Shares 1,200,586 Value ($000) $360,344 Avg Close $285.70 Range $260.07 - $307.82

Q3 2022

Shares 1,221,914 Value ($000) $327,315 Avg Close $275.86 Range $255.74 - $296.14

Q2 2022

Shares 1,233,391 Value ($000) $332,621 Avg Close $279.95 Range $239.95 - $332.69

Q1 2022

Shares 1,240,000 Value ($000) $403,782 Avg Close $282.81 Range $252.06 - $322.12

Q4 2021

Shares 1,204,090 Value ($000) $361,902 Avg Close $290.95 Range $274.90 - $316.79

Q3 2021

Shares 1,293,142 Value ($000) $369,542 Avg Close $260.29 Range $215.96 - $293.10

Q2 2021

Shares 1,316,431 Value ($000) $314,311 Avg Close $236.31 Range $221.03 - $252.51

Q1 2021

Shares 1,336,974 Value ($000) $307,651 Avg Close $212.41 Range $193.30 - $227.75

Q4 2020

Shares 1,386,579 Value ($000) $292,943 Avg Close $196.52 Range $172.95 - $208.05

Q3 2020

Shares 1,395,669 Value ($000) $287,926 Avg Close $191.78 Range $180.89 - $203.83

Q2 2020

Shares 1,411,632 Value ($000) $271,881 Avg Close $178.56 Range $144.47 - $196.01

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,243,018	$438,636	$349.16	$324.28 - $370.31
Q3 2025	1,233,741	$439,927	$361.49	$345.06 - $380.20
Q2 2025	1,247,354	$445,006	$361.30	$322.37 - $399.35
Q1 2025	1,283,548	$512,251	$381.59	$343.99 - $411.24
Q4 2024	1,323,228	$475,251	$365.26	$339.24 - $392.96
Q3 2024	1,316,218	$455,398	$324.38	$288.84 - $350.77
Q2 2024	1,138,262	$334,171	$292.51	$264.78 - $328.92
Q1 2024	1,196,190	$399,193	$306.03	$281.78 - $331.94
Q4 2023	1,220,174	$355,095	$315.32	$280.78 - $332.21
Q3 2023	1,249,967	$405,264	$325.28	$307.94 - $339.08
Q2 2023	1,254,848	$433,174	$318.69	$301.32 - $341.07
Q1 2023	1,179,916	$372,016	$303.19	$275.29 - $321.21
Q4 2022	1,200,586	$360,344	$285.70	$260.07 - $307.82
Q3 2022	1,221,914	$327,315	$275.86	$255.74 - $296.14
Q2 2022	1,233,391	$332,621	$279.95	$239.95 - $332.69
Q1 2022	1,240,000	$403,782	$282.81	$252.06 - $322.12
Q4 2021	1,204,090	$361,902	$290.95	$274.90 - $316.79
Q3 2021	1,293,142	$369,542	$260.29	$215.96 - $293.10
Q2 2021	1,316,431	$314,311	$236.31	$221.03 - $252.51
Q1 2021	1,336,974	$307,651	$212.41	$193.30 - $227.75
Q4 2020	1,386,579	$292,943	$196.52	$172.95 - $208.05
Q3 2020	1,395,669	$287,926	$191.78	$180.89 - $203.83
Q2 2020	1,411,632	$271,881	$178.56	$144.47 - $196.01