AON PLC

Ticker: AON CUSIP: G0403H108 Class: SHS CL A

First Financial Bankshares Inc's Holding History (CIK: 0000036029)

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

Q4 2025

Shares 2,978 Value ($000) $1,051 Avg Close $349.16 Range $324.28 - $370.31

Q3 2025

Shares 3,230 Value ($000) $1,152 Avg Close $361.49 Range $345.06 - $380.20

Q2 2025

Shares 2,374 Value ($000) $847 Avg Close $361.30 Range $322.37 - $399.35

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,978	$1,051	$349.16	$324.28 - $370.31
Q3 2025	3,230	$1,152	$361.49	$345.06 - $380.20
Q2 2025	2,374	$847	$361.30	$322.37 - $399.35