AHL Aspen Insurance Holdings Limited Ordinary Shares

Aspen Insurance Holdings Limited (“Aspen”) (NYSE:AHL) will release its second quarter 2013 financial results on Wednesday, July 24, 2013, following the close of the New York Stock Exchange. A conference call to discuss the results will follow at 9:00am (ET) on Thursday, July 25, 2013.

To participate in the July 25 conference call by phone:

Please call to register at least 10 minutes before the conference call begins, dialing:

+1 (888) 459 5609 (US toll free) +1 (404) 665 9920 (international) Conference ID 97869477

To listen live online:

Aspen will provide a live webcast on the Aspen website.

To download the materials:

The earnings press release and a detailed financial supplement will also be published on the website.

To listen later:

A replay of the call will be available approximately two hours after the end of the live call for 14 days via phone and internet. To listen to the replay by phone please dial:

+1 (855) 859 2056 (US toll free)

+1 (404) 537 3406 (international) Replay ID 97869477

The recording will be also available at www.aspen.co

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, 2012, Aspen reported $10.3 billion in total assets, $4.8 billion in gross reserves, $3.5 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 Investors Service.