Arthur J. Gallagher & Co.

Information Concerning Forward-Looking Statements

This press release contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. When used in this press release, the words “anticipates,” “believes,” “contemplates,” “see,” “should,” “could,” “will,” “estimates,” “expects,” “intends,” “plans” and variations thereof and similar expressions, are intended to identify forward-looking statements. Examples of forward-looking statements include, but are not limited to, anticipated future results or performance of any segment or Gallagher as a whole; acquisition rollover revenues; statements regarding changes in its expenses in the next several quarters; future capital structure changes, including debt levels from time to time; the impact of foreign currency on its results; integration costs; workforce and lease termination costs; amortization of intangibles; depreciation; change in estimated earnout payables; effective tax rate; earnings from continuing operations attributable to noncontrolling interests; the premium rate environment and the state of insurance markets; and the economic environment.

8 of 20

Gallagher’s actual results may differ materially from those contemplated by the forward-looking statements. Readers are therefore cautioned against relying on any of the forward-looking statements, which are neither statements of historical fact nor guarantees or assurances of future performance.

Important factors that could cause actual results to differ materially from those in the forward-looking statements include global economic and geopolitical events, including, among others, fluctuations in interest and inflation rates; protectionism such as tariffs and trade disruptions; a recession or economic downturn; a U.S. government shutdown; political instability, such as global armed conflicts; its actual acquisition opportunities, including closing risks related to pending acquisitions; risks with respect to larger acquisitions such as AssuredPartners, the largest acquisition in its history, including risks related to its ability to successfully integrate operations and the possibility that its assumptions may be inaccurate resulting in unforeseen obligations or liabilities and failure to realize expected benefits of such acquisitions; damage to its reputation due to its failure to uphold its culture or negative perceptions or publicity, including as a result of amplifying effects that the Internet and social media may have on such perceptions; reputational issues related to its sustainability-related activities, including potential backlash against such activities, and compliance with increasingly complex climate- and other sustainability-related regulations, such as risks related to “greenwashing” and “greenhushing”; cybersecurity-related risks; its ability to apply technology, data analytics and artificial intelligence effectively to its business and potential increased costs resulting from such activities; risks associated with the use of artificial intelligence in its business operations, including regulatory, data privacy, cybersecurity, errors and omissions, intellectual property and competition risks; risks related to “AI-washing”; heightened competition for talent and increased compensation costs; disasters or other business interruptions, including with respect to its operations in India; risks related to its international operations, such as those related to regulatory, tax, sustainability, sanctions and anti-corruption compliance and increased scrutiny of the use of off-shore centers of excellence such as those we operate in India and elsewhere; changes to data privacy and protection laws and regulations; foreign exchange rates; changes in accounting standards; changes in premium rates and in insurance markets generally, including the impact of large natural or man-made events; tax, environmental or other compliance risks related to its legacy clean energy investments; its inability to receive dividends or other distributions from subsidiaries; and changes in the insurance brokerage industry’s competitive landscape.

Please refer to Gallagher’s filings with the Securities and Exchange Commission, including Item 1A, “Risk Factors,” of its Annual Report on Form 10-K for the fiscal year ended December 31, 2025 and its subsequently filed Quarterly Reports on Form 10-Q for a more detailed discussion of these and other factors that could impact its forward-looking statements. Any forward-looking statement made by Gallagher in this press release speaks only as of the date on which it is made. Except as required by applicable law, Gallagher does not undertake to update the information included herein or the corresponding earnings release posted on Gallagher’s website.