ILLINOIS TOOL WKS INC

Ticker: ITW CUSIP: 452308109 Class: COM

American Investment Services, Inc.'s Holding History (CIK: 0001369913)

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

Q1 2023

Shares 986 Value ($000) $217 Avg Close $217.67 Range $203.17 - $236.30

Q4 2022

Shares 986 Value ($000) $217 Avg Close $197.50 Range $167.30 - $214.80

Q1 2022

Shares 970 Value ($000) $203 Avg Close $203.67 Range $184.43 - $227.18

Q4 2021

Shares 966 Value ($000) $238 Avg Close $210.30 Range $184.61 - $225.16

Q2 2021

Shares 965 Value ($000) $216 Avg Close $205.01 Range $194.69 - $216.70

Q1 2021

Shares 953 Value ($000) $211 Avg Close $184.98 Range $171.80 - $203.76

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2023	986	$217	$217.67	$203.17 - $236.30
Q4 2022	986	$217	$197.50	$167.30 - $214.80
Q1 2022	970	$203	$203.67	$184.43 - $227.18
Q4 2021	966	$238	$210.30	$184.61 - $225.16
Q2 2021	965	$216	$205.01	$194.69 - $216.70
Q1 2021	953	$211	$184.98	$171.80 - $203.76