Insider · CIK 0001410235

Bay Walter D.

Reports to the SEC for 1 company · ROLLING MEADOWS, IL

sec.gov

Transactions

Companies

Filings

CIK

0001410235

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-08-24	AJGArthur J. Gallagher & Co.S Sale	General Counsel	SSale	−12K sh	$270.08	−$3.24M	71,292.092
2026-03-31	AJGArthur J. Gallagher & Co.M Exercise/Conversion	General Counsel	MExercise/Conversion	+1,415.092 sh	$215.95	+$306K	83,919.092
2026-03-31	AJGArthur J. Gallagher & Co.F Tax Payment	General Counsel	FTax Payment	−627 sh	$215.95	−$135K	83,292.092
2026-03-31	AJGArthur J. Gallagher & Co. · Phantom StockM Exercise/Conversion	General Counsel	MExercise/Conversion	−1,415.092 sh	—	—	3,994.734
2026-03-15	AJGArthur J. Gallagher & Co.A Award	General Counsel	AAward	+7,090 sh	—	—	7,090
2026-03-15	AJGArthur J. Gallagher & Co.M Exercise/Conversion	General Counsel	MExercise/Conversion	−7,090 sh	—	—	0
2026-03-15	AJGArthur J. Gallagher & Co.M Exercise/Conversion	General Counsel	MExercise/Conversion	+7,090 sh	—	—	82,504
2026-03-15	AJGArthur J. Gallagher & Co.F Tax Payment	General Counsel	FTax Payment	−2,411 sh	$207.93	−$501K	75,414
2026-03-04	AJGArthur J. Gallagher & Co. · Phantom StockA Award	General Counsel	AAward	+1,982.292 sh	$227.01	+$450K	5,399.1
2026-03-01	AJGArthur J. Gallagher & Co. · Non-qualified Stock OptionA Award	General Counsel	AAward	+17K sh	—	—	16,952
2025-12-19	AJGArthur J. Gallagher & Co.M Exercise/Conversion	General Counsel	MExercise/Conversion	+15.9K sh	$79.59	+$1.26M	95,399
2025-12-19	AJGArthur J. Gallagher & Co.S Sale	General Counsel	SSale	−15.9K sh	$255.00	−$4.04M	79,549
2025-12-19	AJGArthur J. Gallagher & Co.G Gift	General Counsel	GGift	−1,724 sh	—	—	77,825
2025-12-19	AJGArthur J. Gallagher & Co. · Non-qualified Stock OptionM Exercise/Conversion	General Counsel	MExercise/Conversion	−15.9K sh	—	—	0
2025-03-31	AJGArthur J. Gallagher & Co.M Exercise/Conversion	General Counsel	MExercise/Conversion	+78.755 sh	—	—	79,549
2025-03-31	AJGArthur J. Gallagher & Co.F Tax Payment	General Counsel	FTax Payment	−78.755 sh	$345.24	−$27.2K	79,470.245
2025-03-31	AJGArthur J. Gallagher & Co. · Phantom StockM Exercise/Conversion	General Counsel	MExercise/Conversion	−78.755 sh	—	—	3,395.152
2025-03-15	AJGArthur J. Gallagher & Co.A Award	General Counsel	AAward	+7,180 sh	—	—	7,180
2025-03-15	AJGArthur J. Gallagher & Co.M Exercise/Conversion	General Counsel	MExercise/Conversion	−7,180 sh	—	—	0
2025-03-15	AJGArthur J. Gallagher & Co.M Exercise/Conversion	General Counsel	MExercise/Conversion	+7,180 sh	—	—	82,657
2025-03-15	AJGArthur J. Gallagher & Co.F Tax Payment	General Counsel	FTax Payment	−3,108 sh	$325.24	−$1.01M	79,549
2025-03-12	AJGArthur J. Gallagher & Co.M Exercise/Conversion	General Counsel	MExercise/Conversion	−2,250 sh	—	—	0
2025-03-12	AJGArthur J. Gallagher & Co.M Exercise/Conversion	General Counsel	MExercise/Conversion	+2,250 sh	—	—	76,422
2025-03-12	AJGArthur J. Gallagher & Co.F Tax Payment	General Counsel	FTax Payment	−945 sh	$325.75	−$308K	75,477
2025-03-10	AJGArthur J. Gallagher & Co. · Phantom StockI Discretionary Transaction	General Counsel	IDiscretionary Transaction	+1,400.866 sh	$321.23	+$450K	3,470.264
2025-03-01	AJGArthur J. Gallagher & Co. · Non-qualified Stock OptionA Award	General Counsel	AAward	+11.4K sh	—	—	11,350
2025-02-13	AJGArthur J. Gallagher & Co.S Sale	General Counsel	SSale	−10K sh	$326.62	−$3.27M	74,172
2025-02-05	AJGArthur J. Gallagher & Co.M Exercise/Conversion	General Counsel	MExercise/Conversion	+94.7K sh	—	—	124,784.841
2025-02-05	AJGArthur J. Gallagher & Co.F Tax Payment	General Counsel	FTax Payment	−40.6K sh	$316.30	−$12.8M	84,172
2025-02-05	AJGArthur J. Gallagher & Co. · Phantom StockM Exercise/Conversion	General Counsel	MExercise/Conversion	−94.7K sh	—	—	2,069.398
2024-12-10	AJGArthur J. Gallagher & Co. · Notional Stock UnitsI Discretionary Transaction	General Counsel	IDiscretionary Transaction	+4,942.4 sh	$283.74	+$1.4M	4,942.4
2024-07-30	AJGArthur J. Gallagher & Co.S Sale	General Counsel	SSale	−6,335 sh	$284.06	−$1.8M	30,053
2024-06-18	AJGArthur J. Gallagher & Co.S Sale	General Counsel	SSale	−8,303 sh	$262.74	−$2.18M	36,388
2024-06-17	AJGArthur J. Gallagher & Co. · Notional Stock UnitsI Discretionary Transaction	General Counsel	IDiscretionary Transaction	−9,675.47 sh	$261.16	−$2.53M	0
2024-05-20	AJGArthur J. Gallagher & Co.M Exercise/Conversion	General Counsel	MExercise/Conversion	+800 sh	$70.74	+$56.6K	45,491
2024-05-20	AJGArthur J. Gallagher & Co.S Sale	General Counsel	SSale	−800 sh	$257.24	−$206K	44,691
2024-05-20	AJGArthur J. Gallagher & Co. · Non-qualified Stock OptionM Exercise/Conversion	General Counsel	MExercise/Conversion	−800 sh	—	—	0
2024-05-17	AJGArthur J. Gallagher & Co.M Exercise/Conversion	General Counsel	MExercise/Conversion	+8,717 sh	$70.74	+$617K	53,408
2024-05-17	AJGArthur J. Gallagher & Co.S Sale	General Counsel	SSale	−3,863 sh	$256.27	−$990K	49,545
2024-05-17	AJGArthur J. Gallagher & Co.S Sale	General Counsel	SSale	−4,468 sh	$257.53	−$1.15M	45,077
2024-05-17	AJGArthur J. Gallagher & Co.S Sale	General Counsel	SSale	−386 sh	$258.11	−$99.6K	44,691
2024-05-17	AJGArthur J. Gallagher & Co. · Non-qualified Stock OptionM Exercise/Conversion	General Counsel	MExercise/Conversion	−8,717 sh	—	—	800
2024-05-16	AJGArthur J. Gallagher & Co.S Sale	General Counsel	SSale	−7,576 sh	$253.00	−$1.92M	51,974
2024-05-16	AJGArthur J. Gallagher & Co.M Exercise/Conversion	General Counsel	MExercise/Conversion	+7,283 sh	$70.74	+$515K	59,550
2024-05-16	AJGArthur J. Gallagher & Co.S Sale	General Counsel	SSale	−7,283 sh	$256.04	−$1.86M	44,691
2024-05-16	AJGArthur J. Gallagher & Co. · Non-qualified Stock OptionM Exercise/Conversion	General Counsel	MExercise/Conversion	−7,283 sh	—	—	9,517
2024-03-16	AJGArthur J. Gallagher & Co.M Exercise/Conversion	General Counsel	MExercise/Conversion	+8,914 sh	—	—	56,125
2024-03-16	AJGArthur J. Gallagher & Co.F Tax Payment	General Counsel	FTax Payment	−3,858 sh	$253.17	−$977K	52,267
2024-03-16	AJGArthur J. Gallagher & Co.A Award	General Counsel	AAward	+8,914 sh	—	—	11,164
2024-03-16	AJGArthur J. Gallagher & Co.M Exercise/Conversion	General Counsel	MExercise/Conversion	−8,914 sh	—	—	2,250

Recent filings

Accepted (ET)
Aug 264
Bay Walter D.0000354190-26-000199
SEC(opens sec.gov)
Apr 14
Bay Walter D.0000354190-26-000114
SEC(opens sec.gov)
Mar 174
Bay Walter D.0000354190-26-000075
SEC(opens sec.gov)
Mar 64
Bay Walter D.0000354190-26-000058
SEC(opens sec.gov)
Mar 34
Bay Walter D.0000354190-26-000016
SEC(opens sec.gov)
Dec 234
Bay Walter D.0000354190-25-000056
SEC(opens sec.gov)
Apr 24
Bay Walter D.0001127602-25-011274
SEC(opens sec.gov)
Mar 184
Bay Walter D.0001127602-25-009865
SEC(opens sec.gov)

Companies

Arthur J. Gallagher & Co.General CounselAJG

Address

2850 GOLF ROAD

ROLLING MEADOWS, IL, 60008-4002