144
0001784277
XXXXXXXX
LIVE
0000354190
Arthur J. Gallagher & Co.
001-09761
2850 GOLF ROAD
ROLLING MEADOWS
IL
60008-4050
630-773-3800
Matrix Trust Co
Trustee for the trust relating to the Plan
Common Stock
Pershing
One Pershing Plaza
Jersey City
NJ
07399
15000
3779700.00
256800000
12/17/2025
NASDAQ
Common Stock
01/01/2012
Open market purchase
Open market
N
15000
01/01/2012
Cash at time of purchase
N
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
09/22/2025
2553
763937.77
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
09/23/2025
963
292056.62
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
10/03/2025
503
156668.45
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
10/07/2025
158
49022.26
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
10/13/2025
7
2099.14
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
10/16/2025
271
76111.03
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
10/27/2025
33
9205.93
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
10/28/2025
7
1882.77
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
10/29/2025
10491
2765596.50
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
10/30/2025
648
170158.51
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
11/04/2025
1920
478981.44
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
11/05/2025
362
90922.63
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
11/07/2025
181
45081.22
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
11/11/2025
459
117030.08
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
11/12/2025
144
36643.32
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
11/18/2025
6
1564.00
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
11/19/2025
8
2013.34
Matrix Trust Company
2800 North Central
Avenue
Phoenix
AZ
85004
Common Stock
11/24/2025
351
86615.39
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
11/25/2025
764
191038.35
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
11/26/2025
3290
819413.98
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
11/28/2025
571
142366.97
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
12/02/2025
3789
929502.33
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
12/08/2025
498
118796.70
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
12/09/2025
1418
340793.61
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
12/10/2025
79
18906.08
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
12/11/2025
1784
440025.38
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
12/12/2025
127
31901.11
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
12/15/2025
5387
1372259.60
Matrix Trust Company
2800 North Central Avenue
Suite 900
Phoenix
AZ
85004
Common Stock
12/16/2025
3912
991965.45
It is anticipated that sales covered by this form will be made within the period beginning 09/18/2025 and ending 12/17/2025.
12/17/2025
Eric Simpson