Aspen Prices Offering of $300M of Senior Notes

Aspen Insurance Holdings Limited AHL has priced $300 million of 4.650% senior notes due 2023 (the “Notes”). The Notes pay interest semi-annually on May 15 and November 15 and will mature on November 15, 2023. Aspen intends to use the net proceeds to pay the redemption price on its $250 million aggregate principal amount outstanding of 6.00% senior notes due August 15, 2014 and to pay related fees, expenses and premiums. Any remaining net proceeds from the offering may be used for general corporate purposes. The closing of the offering is expected to occur on November 13, 2013, subject to certain customary conditions. Barclays, Citigroup, Deutsche Bank Securities and HSBC are acting as joint book-running managers for the offering. The Notes are being offered pursuant to an effective shelf registration statement that has been filed with the U.S. Securities and Exchange Commission (“SEC”). Any offer, or solicitation to buy, if at all, will be made solely by means of a preliminary prospectus supplement and accompanying prospectus. Copies of the preliminary prospectus supplement and the final prospectus supplement and, in each case, the accompanying prospectus may be obtained, when available, from the SEC's website at www.sec.gov. Alternatively, these documents are available from the underwriters by contacting any of the following: Barclays Capital Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, telephone (888) 603-5847 or email Barclaysprospectus@broadridge.com Citigroup Global Markets Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood NY, 11717, telephone (800) 831-9146 or email batprospectusdept@citi.com Deutsche Bank Securities Inc., 60 Wall Street, New York, NY 10005, Attention: Prospectus Group, telephone (800) 503-4611 or e-mail at prospectus.CPDG@db.com HSBC Securities (USA) Inc., 452 Fifth Avenue, New York, NY 10018, Attention: Transaction Management Group, telephone (866) 811-8049 or email Debtprospectus@us.hsbc.com This press release shall not constitute an offer to sell or a solicitation of an offer to buy the Notes, nor shall there be any sale of the Notes in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. 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 total 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,” “likely,” “seek,” “will,” “estimate,” “may,” “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 more 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, 2012, filed with the SEC on February 26, 2013. Aspen undertakes no obligation to update or revise publicly any forward-looking statements, whether as a result of new information, future events or otherwise.