Arthur J. Gallagher & Co. engages in the provision of insurance brokerage, consulting, and third party claims settlement and administration services to both domestic and international entities. It operates through the following business segments: Brokerage, Risk Management and Corporate. The Brokerage segment comprises of retail and wholesale insurance brokerage operations. The Risk Management segment provides contract claim settlement and administration services for enterprises and public entities that choose to self-insure some or all of their property/casualty coverages and for underwriting enterprises that choose to outsource some or all of their property/casualty claims departments. The Corporate segment manages clean energy and other investments. The company was founded by Arthur J. Gallagher on October 1, 1927 and is headquartered in Rolling Meadows, IL.