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Arthur J. Gallagher &

XNYS · INSURANCE AGENTS, BROKERS & SERVICE

5 articles20 insider tx0 holders0 supply chain7 selling intent filings1 new insider

Research articles

Includes notes from domestic 8-K and foreign private issuer 6-K disclosures.

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Recent insider activity

Insider net $ (monthly)open-market Form 4 only - grants, exercises, tax withholding excluded$20.0M$10.0M$0-$10.0M-$20.0M2024-10 -$2.8M2024-11 -$259K2024-12 $317K2025-01 $02025-02 -$18.5M2025-03 -$2.5M2025-04 $02025-05 -$12.6M2025-06 $19K2025-07 $02025-08 -$1.2M2025-09 -$8.9M2025-10 $02025-11 -$891K2025-12 -$6.4M2026-01 $02026-02 $02026-03 -$8.1M2026-04 $02026-05 $02026-06 -$618K2026-07 $02026-08 -$4.1M2026-09 -$3.4MOct 24Dec 24Feb 25Apr 25Jun 25Aug 25Oct 25Dec 25Feb 26Apr 26Jun 26Aug 26~ derived from SEC-reported shares x price. Hatched: excluded (implausible price) or unpriced.

open-market Form 4 only - grants, exercises, tax withholding excluded

0 buyers - 4 unique sellers · Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.

Date Insider Title Type Shares Price Value
September 15, 2026 Cary Richard C Controller, CAO SELL -1,000 $253 ~$0.3M
September 8, 2026 Gallagher J Patrick Jr CEO GIFT -49,988 — —
September 8, 2026 Gallagher Patrick Murphy Chief Operating Officer GIFT 49,988 — —
September 2, 2026 Hudson Scott R Vice President OPTION_EXERCISE 12,000 $86 ~$1.0M
September 2, 2026 Hudson Scott R Vice President SELL -12,000 $264 ~$3.2M
September 2, 2026 Hudson Scott R Vice President OPTION_EXERCISE -12,000 — —
September 1, 2026 Miskel Christopher C. — GRANT 152.67 $262 ~$40K
August 24, 2026 Bay Walter D. General Counsel SELL -12,000 $270 ~$3.2M
August 19, 2026 Mead Christopher E VICE PRESIDENT OPTION_EXERCISE 3,500 $86 ~$0.3M
August 19, 2026 Mead Christopher E VICE PRESIDENT SELL -3,500 $257 ~$0.9M
August 19, 2026 Mead Christopher E VICE PRESIDENT OPTION_EXERCISE -3,500 — —
August 16, 2026 Bloom Mark H. Vice President OPTION_EXERCISE 1,280.49 — —
August 16, 2026 Bloom Mark H. Vice President TAX_WITHHOLD -606.81 $251 ~$0.2M
August 16, 2026 Bloom Mark H. Vice President OPTION_EXERCISE -1,280.49 — —
August 5, 2026 Gallagher Patrick Murphy Chief Operating Officer GIFT -23,800 — —
July 1, 2026 Jain Vishal VICE PRESIDENT OPTION_EXERCISE 2,162.69 $230 ~$0.5M
July 1, 2026 Jain Vishal VICE PRESIDENT OPTION_EXERCISE -2,162.69 — —
July 1, 2026 Gallagher Thomas Joseph President OPTION_EXERCISE 351.95 $230 ~$81K
July 1, 2026 Gallagher Thomas Joseph President OPTION_EXERCISE -351.95 — —
July 1, 2026 Pesch Michael Robert Vice President OPTION_EXERCISE 355.8 $230 ~$82K

Insider Selling Intent (Form 144)

Date Filer Relationship Est. shares Filing
September 15, 2026 Matrix Trust Co — 15,000 SEC
September 15, 2026 Cary Richard C — 1,000 SEC
September 2, 2026 Hudson Scott R — 12,000 SEC
August 24, 2026 Walter D. Bay — — SEC
August 19, 2026 Mead Christopher E — 3,500 SEC
June 16, 2026 Matrix Trust Co — 15,000 SEC
June 2, 2026 Cary Richard C — 3,000 SEC

New Insiders (Form 3)

Date Insider Title Relationship Shares Filing
October 1, 2026 — — — — SEC
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