Catlin Group Limited (Catlin) is a holding company. Catlin is an international specialty property/casualty insurer and reinsurer. It operates worldwide through six underwriting hubs. The Company, through its subsidiaries, underwrites specialty classes of insurance and reinsurance worldwide. The Company underwrites a range of products, including property, casualty, energy, marine and aerospace insurance and property, catastrophe and per-risk excess, non-proportional treaty, aviation, marine, casualty and motor reinsurance. Catlin operates in four segments: London/UK, which comprises direct insurance and reinsurance business originating in the United Kingdom; Bermuda, which primarily underwrites reinsurance business; US, which underwrites direct insurance and reinsurance business originating in the United States, and International, which comprises the Company's Asia-Pacific, Europe and Canada underwriting hubs, which provide insurance and reinsurance services for their markets.