Form4insider filings, from the source

Company · CIK 0000354190 · SIC 6411 — Insurance Agents, Brokers & Service · NYSE

Arthur J. Gallagher & Co. · AJG

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $3.4M · 2net −$3.4M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesAug 28Sep 2Sep 7Sep 12Sep 17Sep 23Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 15, 2026 SForm 4 →Sep 17, 4:46 pm EDTRichard C CaryController, CAO1,000$252.86$252,85846,819−2.09%
Sep 8, 2026 GForm 4 →Sep 10, 6:45 pm EDTPatrick Murphy GallagherChief Operating Officer49,988——148,093—
Sep 8, 2026 GForm 4 →Sep 10, 6:36 pm EDTJ Patrick Gallagher Jr.CEO, Director49,988——0—
Sep 2, 2026 SForm 4 →Sep 4, 5:25 pm EDTScott R HudsonVice President12,000$264.13$3,169,59690,262−11.7%
Sep 2, 2026 MForm 4 →Sep 4, 5:25 pm EDTScott R HudsonVice President12,000$86.17$1,034,040102,262—
Sep 1, 2026 AForm 4 →Sep 2, 5:54 pm EDTChristopher C. MiskelDirector153$262.00$40,00010,826—

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 2, 2026 MForm 4 →Sep 4, 5:25 pm EDTScott R HudsonVice President12,000——12,370—