InsiderTrades

Form 4 for AJG Arthur J. Gallagher & Co.

Accepted 2026-04-02 16:48:41 ET · period of report 2026-03-31 · accession 0000354190-26-000124 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
D 2026-04-02 16:48 2026-03-31 AJG GALLAGHER THOMAS JOSEPH Pres M - OptEx $215.95 +76.38 323.5K +0.0% +$16.5K
D 2026-04-02 16:48 2026-03-31 AJG GALLAGHER THOMAS JOSEPH Pres F - Tax $215.95 -76.38 323.4K -0.0% -$16.5K
D 2026-04-02 16:48 2026-03-31 AJG GALLAGHER THOMAS JOSEPH Pres M - OptEx $0.00 -76.38 20.2K -0.4% $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-03-31 M A 76.38 $215.95 323,467.46 D — —
2 Common Common Stock 2026-03-31 F D 76.38 $215.95 323,391.08 D — —
3 Derivative Phantom Stock 2026-03-31 M D 76.38 $0.00 20,214.46 D — · — to — 76.38 Common Stock (F3) Each share of phantom stock represents a right to receive one share of Gallagher common stock. (F4) These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61. (F4) These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting person. Participants vest in these awards when they attain age 62, or after a one-year period for participants who have attained age 61.