Arthur J Gallagher, a US-based global insurance brokerage and risk management services firm, agreed to acquire GA Mavon & Co, a wholesale broker. Financial terms were not disclosed. "GA Mavon and Mavco Insurance Agency are well-respected businesses with a similar culture to ours that will expand our high-net-worth offerings in the Midwest region. We are very pleased to welcome Phil and his associates to our rapidly growing team," J. Patrick Gallagher, Arthur J Gallagher Chairman, President and CEO.