Arthur J. Gallagher & Co. is a global insurance brokerage and risk management company headquartered in Rolling Meadows, Illinois, founded in 1927. The firm specializes in arranging commercial insurance coverage, with a particular focus on serving middle-market businesses across diverse industries. Its core activities include insurance brokerage, reinsurance brokerage, and a broad suite of consulting services related to risk, benefits, and human capital. Through its risk management segment, Arthur J. Gallagher & Co. provides third-party claims settlement and administration for organizations that self-insure, helping clients manage losses, control costs, and navigate complex regulatory environments. The company operates internationally, generating a significant portion of its business from markets such as Australia, Canada, New Zealand, and the United Kingdom, in addition to its U.S. presence. By combining sector-specific expertise, advisory capabilities, and claims administration, Arthur J. Gallagher & Co. plays a central role in connecting corporate, public, and institutional clients with tailored insurance and risk management solutions in the global financial services ecosystem.