Gallagher (Arthur J.) is a holding company. Through its subsidiaries, Co. provides insurance brokerage, consulting, and third-party property/casualty claims settlement and administration services to businesses and organizations. Co.'s segments are: brokerage, which is mainly comprised of its retail and wholesale insurance brokerage operations; risk management, which provides contract claim settlement and administration services for enterprises and public entities that choose to self-insure their property/casualty coverages and for underwriting enterprises that choose to outsource their property/casualty claims departments; and corporate, which manages its clean energy and other investments.