AON PLC

Ticker: AON CUSIP: G0403H108 Class: SHS CL A

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q4 2025

Shares 496,307 Value ($000) $175,137 Avg Close $349.16 Range $324.28 - $370.31

Q3 2025

Shares 529,773 Value ($000) $188,907 Avg Close $361.49 Range $345.06 - $380.20

Q2 2025

Shares 567,987 Value ($000) $202,635 Avg Close $361.30 Range $322.37 - $399.35

Q1 2025

Shares 554,750 Value ($000) $221,395 Avg Close $381.59 Range $343.99 - $411.24

Q4 2024

Shares 564,247 Value ($000) $202,655 Avg Close $365.26 Range $339.24 - $392.96

Q3 2024

Shares 592,550 Value ($000) $205,016 Avg Close $324.38 Range $288.84 - $350.77

Q2 2024

Shares 602,517 Value ($000) $176,887 Avg Close $292.51 Range $264.78 - $328.92

Q1 2024

Shares 611,165 Value ($000) $203,958 Avg Close $306.03 Range $281.78 - $331.94

Q4 2023

Shares 741,041 Value ($000) $215,658 Avg Close $315.32 Range $280.78 - $332.21

Q3 2023

Shares 725,329 Value ($000) $235,166 Avg Close $325.28 Range $307.94 - $339.08

Q2 2023

Shares 719,184 Value ($000) $248,262 Avg Close $318.69 Range $301.32 - $341.07

Q1 2023

Shares 726,171 Value ($000) $228,955 Avg Close $303.19 Range $275.29 - $321.21

Q4 2022

Shares 759,945 Value ($000) $228,090 Avg Close $285.70 Range $260.07 - $307.82

Q3 2022

Shares 762,559 Value ($000) $204,267 Avg Close $275.86 Range $255.74 - $296.14

Q2 2022

Shares 755,432 Value ($000) $203,725 Avg Close $279.95 Range $239.95 - $332.69

Q1 2022

Shares 733,424 Value ($000) $238,825 Avg Close $282.81 Range $252.06 - $322.12

Q4 2021

Shares 729,200 Value ($000) $219,168 Avg Close $290.95 Range $274.90 - $316.79

Q3 2021

Shares 608,795 Value ($000) $173,975 Avg Close $260.29 Range $215.96 - $293.10

Q2 2021

Shares 607,410 Value ($000) $145,025 Avg Close $236.31 Range $221.03 - $252.51

Q1 2021

Shares 554,704 Value ($000) $127,643 Avg Close $212.41 Range $193.30 - $227.75

Q4 2020

Shares 416,241 Value ($000) $87,939 Avg Close $196.52 Range $172.95 - $208.05

Q3 2020

Shares 357,123 Value ($000) $73,675 Avg Close $191.78 Range $180.89 - $203.83

Q2 2020

Shares 255,110 Value ($000) $49,134 Avg Close $178.56 Range $144.47 - $196.01

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	496,307	$175,137	$349.16	$324.28 - $370.31
Q3 2025	529,773	$188,907	$361.49	$345.06 - $380.20
Q2 2025	567,987	$202,635	$361.30	$322.37 - $399.35
Q1 2025	554,750	$221,395	$381.59	$343.99 - $411.24
Q4 2024	564,247	$202,655	$365.26	$339.24 - $392.96
Q3 2024	592,550	$205,016	$324.38	$288.84 - $350.77
Q2 2024	602,517	$176,887	$292.51	$264.78 - $328.92
Q1 2024	611,165	$203,958	$306.03	$281.78 - $331.94
Q4 2023	741,041	$215,658	$315.32	$280.78 - $332.21
Q3 2023	725,329	$235,166	$325.28	$307.94 - $339.08
Q2 2023	719,184	$248,262	$318.69	$301.32 - $341.07
Q1 2023	726,171	$228,955	$303.19	$275.29 - $321.21
Q4 2022	759,945	$228,090	$285.70	$260.07 - $307.82
Q3 2022	762,559	$204,267	$275.86	$255.74 - $296.14
Q2 2022	755,432	$203,725	$279.95	$239.95 - $332.69
Q1 2022	733,424	$238,825	$282.81	$252.06 - $322.12
Q4 2021	729,200	$219,168	$290.95	$274.90 - $316.79
Q3 2021	608,795	$173,975	$260.29	$215.96 - $293.10
Q2 2021	607,410	$145,025	$236.31	$221.03 - $252.51
Q1 2021	554,704	$127,643	$212.41	$193.30 - $227.75
Q4 2020	416,241	$87,939	$196.52	$172.95 - $208.05
Q3 2020	357,123	$73,675	$191.78	$180.89 - $203.83
Q2 2020	255,110	$49,134	$178.56	$144.47 - $196.01