Aspen Releases 2013 Loss Development Triangles

Aspen Insurance Holdings Limited (“Aspen”) (NYSE:AHL) has published its 2013 Loss Development Triangles (the “Loss Triangles”) on its website within the Investor Relations section.

The Loss Triangles provide stakeholders with additional insight into the reserves held on Aspen’s balance sheet as at December 31, 2013. They present eight reserving lines of business which fall within Aspen’s two reporting segments, Insurance and Reinsurance.

The Loss Triangles provide data on earned premiums, paid losses, case reserves and incurred losses on an accident year basis on a gross, ceded and net basis. They also include total incurred but not reported (IBNR) reserves as at December 31, 2013, both gross and net of applicable reinsurance, together with development triangles for paid and incurred losses on a gross basis.

About Aspen Insurance Holdings Limited

Aspen provides reinsurance and insurance coverage to clients in various domestic and global markets through wholly-owned subsidiaries and offices in Bermuda, France, Germany, Ireland, Singapore, Switzerland, the United Kingdom and the United States. For the year ended December 31, 2013, Aspen reported $10.2 billion in total assets, $4.7 billion in gross reserves, $3.3 billion in shareholders’ equity and $2.6 billion in gross written premiums. Its operating subsidiaries have been assigned a rating of “A” (“Strong”) by Standard & Poor’s, an “A” (“Excellent”) by A.M. Best and an “A2” (“Good”) by Moody’s.

Application of the Safe Harbor of the Private Securities Litigation Reform Act of 1995

This press release may contain written “forward-looking statements” within the meaning of the U.S. federal securities laws. These statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include all statements that do not relate solely to historical or current facts, and can be identified by the use of words such as “expect,” “intend,” “plan,” “believe,” “project,” “anticipate,” “seek,” “will,” “estimate,” “may,” “likely,” “continue,” and similar expressions of a future or forward-looking nature.

All forward-looking statements rely on a number of assumptions, estimates and data concerning future results and events and are subject to a number of uncertainties and other factors, many of which are outside Aspen’s control that could cause actual results to differ materially from such statements. For a detailed description of uncertainties and other factors that could impact the forward-looking statements in this press release, please see the “Risk Factors” section in Aspen’s Annual Report on Form 10-K for the year ended December 31, 2013 filed with the U.S. Securities and Exchange Commission on February 20, 2014. Aspen undertakes no obligation to update or revise publicly any forward-looking statements, whether as a result of new information, future events or otherwise.