Arthur J Gallagher, a US-based global insurance brokerage and risk management services firm, agreed to acquire Hanover Excess & Surplus, an agency offering hard-to-place coastal commercial and personal property/casualty coverages. Financial terms were not disclosed. "Hanover Excess & Surplus will enhance our presence in North Carolina, and brings additional specialty market expertise and strong leadership capabilities to RPS," J. Patrick Gallagher, Arthur J. Gallagher Chairman, President, and CEO.