Group 1 - Arthur J. Gallagher & Co. announced the acquisition of Australia-based MACK Insurance Services, a commercial insurance broker focused on the agriculture sector [1][2] - The terms of the transaction were not disclosed, and Lizzie Carver and her team will join Gallagher's brokerage operations in Australia [1] - J. Patrick Gallagher, Jr., Chairman and CEO, highlighted that MACK's expertise in agriculture complements Gallagher's existing capabilities in Australia [2] Group 2 - Arthur J. Gallagher & Co. is a global insurance brokerage, risk management, and consulting services firm headquartered in Rolling Meadows, Illinois, operating in approximately 130 countries [2]