Currently headquartered in the Chicago suburb of Itasca, Illinois, Arthur J. Gallagher & Co. is an international sales and marketing company that plans and administers cost-effective, differentiated property/casualty and human resource risk management programs as brokers, consultants and third-party administrators. At Gallagher, we’re excited to announce that in 2017, our new corporate headquarters will be moved to a state-of-the-art facility in nearby Rolling Meadows, IL.