Insurance and risk management firm Arthur J. Gallagher has acquired retail property and casualty brokerage R.J. Riordan. The Illinois-based firm provides a wide variety of insurance products and services, specialising in construction and transportation. Under the acquisition, R.J. Riordan’s team will relocate to Gallagher’s retail brokerage operations, reporting to head of retail property and casualty brokerage operations for the Midwest region, J. Ryan Isaacs. J. Patrick Gallagher, chairman, president and CEO, comments: “The R.J. Riordan team brings us additional expertise and growth opportunities, particularly in the construction industry. We are very pleased to welcome them to Gallagher.” R.J. Riordan joins Gallagher’s list of other subsidiaries, including Artex Risk Solutions, which provides a range of alternative risk management services such as single-parent, group, industry, cell and employee benefit captives.