AJG

• Richard C. Cary, 63, will step down as Controller and Chief Accounting Officer effective September 30, 2026, and plans to retire in 2028.
• Kyle G. Koreyva, 42, will succeed Cary as Controller and Chief Accounting Officer effective October 1, 2026.
• Koreyva joined Gallagher via the AssuredPartners acquisition in August 2025 and previously served as AssuredPartners' Chief Accounting Officer.
• No changes to Koreyva's compensation, no family relationships with directors/officers, and no reportable transactions under Item 404(a).

5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements

• Q2 2026 net earnings were $324 million, down from $368 million in the prior-year quarter.
• Adjusted diluted EPS for Q2 2026 was $2.84, up from $2.30 in Q2 2025.
• Combined Brokerage and Risk Management segments grew revenue 24% in Q2 2026, including 6% organic growth.
• The company closed 6 brokerage and 1 risk management acquisition in Q2 2026, with estimated annualized revenues of $58 million and $5 million, respectively.

2.02 Results of Operations and Financial Condition · 7.01 Regulation FD Disclosure

• David Johnson, Lead Independent Director of Arthur J. Gallagher & Co., passed away on July 22, 2026.
• Ralph Nicoletti was elected by independent directors to serve as Lead Independent Director, effective immediately.
• John Coldman was appointed to the Compensation and Nominating/Governance Committees.
• The company issued a press release on July 29, 2026, announcing the passing and related board actions.

8.01 Other Events

• Arthur J. Gallagher & Co. announced plans on June 3, 2026, to host an investor meeting on June 17, 2026.
• The CFO Commentary includes estimates relating to 2026 results and cautionary language regarding forward-looking statements.
• The report was filed under Item 7.01 Regulation FD Disclosure to publicly disclose the availability of these materials.

7.01 Regulation FD Disclosure

• At the May 12, 2026 Annual Meeting, stockholders elected all nine director nominees to serve until the 2027 Annual Meeting.
• Stockholders ratified Ernst & Young LLP as independent auditor for fiscal year ending December 31, 2026, with 225,670,790 votes for.
• The non-binding Say-on-Pay proposal was approved with 200,825,370 votes for and 18,035,501 against.
• The report was filed under Item 5.07 to disclose the final voting results of the annual meeting.

5.07 Submission of Matters to a Vote of Security Holders

• Reported net earnings were $823 million, or $3.16 diluted EPS, compared to $709 million, or $2.72 diluted EPS, in the prior year quarter.
• Adjusted EBITDAC for Total Company was $1,752 million, up from $1,435 million in Q1 2025.
• Combined brokerage and risk management segments delivered revenue growth of 28% and organic growth of 5% in the quarter.
• The company closed 8 brokerage and 1 risk management acquisition in Q1 2026, with estimated annualized revenues of $49 million and $10 million, respectively.

2.02 Results of Operations and Financial Condition · 7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• Arthur J. Gallagher & Co. announced on March 3, 2026, plans to host an investor meeting on March 17, 2026.
• The CFO Commentary includes estimates for 2026 results and net after-tax cash flows from clean energy investments in 2026 and future years.
• The filing was made under Item 7.01 Regulation FD Disclosure to provide this information to investors.
• The report was signed by Walter D. Bay, Vice President, General Counsel and Secretary.

7.01 Regulation FD Disclosure

• Sherry Barrat informed Arthur J. Gallagher & Co. on March 6, 2026, of her decision to retire from the Board of Directors.
• Barrat will not stand for reelection at the 2026 Annual Meeting.
• Her decision is not related to any disagreement with the Company on operations, policies, or practices.
• The Board will be reduced from ten to nine members effective at the conclusion of the 2026 Annual Meeting.

5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements