Aspen Insurance Holdings Limited is a Bermuda based holding company that underwrites specialty insurance and reinsurance on a global basis through its operating subsidiaries.

The company generates revenue primarily from net earned premiums on its insurance and reinsurance policies, supplemented by investment income and fees from its asset management activities.

The company operates through the following segments: Insurance and Reinsurance.

• Insurance: includes underwriting of first party, specialty, casualty and liability, financial and professional lines, and other insurance products primarily through Aspen UK, Aspen Lloyd’s, AAIC and Aspen Specialty in the United States and United Kingdom, as well as Aspen Bermuda.

• Reinsurance: provides property catastrophe, other property, casualty and specialty reinsurance on treaty and facultative bases, written mainly through Aspen Bermuda, its branches in Singapore and Switzerland, Aspen Lloyd’s and AAIC.

Aspen Insurance Holdings Limited competes in a mature and highly competitive insurance and reinsurance industry, facing rivals such as major U. S., U. K., Bermuda based, European and Lloyd’s syndicates that often have longer operating histories, greater capital and stronger financial strength ratings, while the company differentiates itself through a disciplined risk management framework, global broker distribution and integrated asset management capabilities.

The company serves insurers, reinsurers and corporate clients, primarily accessed through intermediaries such as Marsh & McLennan Companies, Inc., Aon Corporation, Arthur J Gallagher and other brokers and reinsurance intermediaries.