ZIEBELL WILLIAM F

PrivateCIK: 1695709

Location

ITASCA, IL

ZIEBELL WILLIAM F (VICE PRESIDENT) exercised options at ARTHUR J. GALLAGHER & CO.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 1 exercise

ZIEBELL WILLIAM F

Filed: 4/2/2026ACC: 0000354190-26-000116

InsiderZIEBELL WILLIAM FCIK 1695709

→

IssuerARTHUR J. GALLAGHER & CO.CIK 354190

Officer· VICE PRESIDENT

Since Sep 2018

-50.92

Net shares

Net seller

$11.0K

Total sold

0

Open market trades

0B · 0S

3

Total transactions

50.92 acquired · 101.84 disposed

Non-Derivative Transactions2

Common Stock

Direct

M · Option Exercise

Shares

+50.92

Price / share

$215.95

Trade value

$11K

% of position

0.1%

3/31/2026

48.68K→48.74K

Common Stock

Direct

F · Tax Withholding

Shares

−50.92

Price / share

$215.95

Trade value

$11K

% of position

0.1%

3/31/2026

48.74K→48.68K

Total

Net shares

+0.00

Net value

$0.00

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	3/31/2026	M · Option Exercise	+50.92	$215.95	$11K	0.1%	48.68K	48.74K
Common Stock Direct	3/31/2026	F · Tax Withholding	−50.92	$215.95	$11K	0.1%	48.74K	48.68K
Total			+0.00		$0.00

Derivative Transactions1

Phantom Stock

Direct

M · Option Exercise

Converts to

Common Stock

50.92 shares

Shares

−50.92

Strike price

Held after

68.39K

Exercisable

—

3/31/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Phantom Stock Direct	Common Stock50.92 shares	3/31/2026	M · Option Exercise	−50.92		—	68.39K

Non-Derivative Holdings (Post-Transaction)1

Common Stock

Indirect

Shares owned491.14

Total

491.14 indirect491.14

Security Title	Shares Owned	Ownership Type
Common Stock	491.14	Indirect
Total	491.14	491.14 indirect

Derivative Holdings (Post-Transaction)7

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

23.51K

Shares owned

23.51K

Exercise price

86.17

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

9.71K

Shares owned

9.71K

Exercise price

243.54

Expiration

—

Exercise window

—

Notional Stock Units

Direct

Underlying security

Common Stock

Underlying shares

6.03K

Shares owned

6.03K

Exercise price

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

22.21K

Shares owned

22.21K

Exercise price

127.90

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

9.24K

Shares owned

9.24K

Exercise price

177.09

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

11.10K

Shares owned

11.10K

Exercise price

158.56

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

9.92K

Shares owned

9.92K

Exercise price

337.74

Expiration

—

Exercise window

—

Total

Underlying

91.72K

Owned

91.72K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Non-qualified Stock Option Direct	Common Stock	86.17	—	—	23.51K	23.51K
Non-qualified Stock Option Direct	Common Stock	243.54	—	—	9.71K	9.71K
Notional Stock Units Direct	Common Stock		—	—	6.03K	6.03K
Non-qualified Stock Option Direct	Common Stock	127.90	—	—	22.21K	22.21K
Non-qualified Stock Option Direct	Common Stock	177.09	—	—	9.24K	9.24K
Non-qualified Stock Option Direct	Common Stock	158.56	—	—	11.10K	11.10K
Non-qualified Stock Option Direct	Common Stock	337.74	—	—	9.92K	9.92K
Total					91.72K	91.72K

ZIEBELL WILLIAM F — Insider Transaction (Form 4) Filed Apr 2, 2026 | Finecho