Arthur J. Gallagher & Co.: insider trades · United States · SEC (Form 4)

About Arthur J. Gallagher & Co.

Arthur J. Gallagher & Co. (ticker: AJG) is a major U.S.-based insurance brokerage, risk management, and consulting company listed on the NYSE in the United States (United States). Founded in 1927 by Arthur J. Gallagher in Chicago, the business has evolved from a local brokerage into one of the world’s largest insurance intermediaries and risk advisory firms through a long record of organic growth and acquisitions. Gallagher’s model is built around two core engines. The Brokerage segment is the largest contributor and spans retail insurance brokerage, wholesale and reinsurance brokerage, specialty programs, employee benefits, and other placement services. It serves a broad client base that includes middle-market companies, larger corporates, public sector entities, and specialized industries. The Risk Management segment provides fee-based consulting and services such as claims management, loss control, analytical support, and customized risk solutions. A Corporate segment houses central functions and financing costs. From a competitive standpoint, AJG benefits from scale, global insurer relationships, and a diversified distribution platform. Its size improves access to insurance capacity and allows it to serve multinational clients with complex, multi-jurisdictional risk needs. The company is also widely known for its active M&A strategy, which has been a defining feature of its expansion. Gallagher routinely acquires niche brokers and specialty firms to deepen expertise, broaden client relationships, and extend geographic reach. This acquisition-led model has helped support its market position against other large global brokers. Geographically, Gallagher has a strong U.S. base and an international footprint across the U.K., Ireland, continental Europe, Canada, Australia, and New Zealand, among other markets. That reach gives the company a meaningful platform to support clients with both domestic and cross-border insurance and risk requirements. Recent highlights include the publication of its 2025 annual report and continued deal activity in 2025, including the completed acquisition of Woodruff Sawyer and additional acquisitions as part of its ongoing expansion program. For investors, AJG stands out as a high-quality insurance-services compounder with recurring fee income, broad industry exposure, and a disciplined acquisition strategy that continues to shape its growth profile.