Arch Capital Group Ltd. [NASDAQ: ACGL] announced today that it has priced an underwritten public offering of $325 million of its 6.75% Non-Cumulative Preferred Shares, Series C, with a liquidation preference of $25.00 per share. The Company intends to use the net proceeds of this offering to redeem all of our outstanding Series A Non-Cumulative Preferred Shares and Series B Non-Cumulative Preferred Shares. The Company may redeem all or a portion of the Series C Non-Cumulative Preferred Shares at a redemption price of $25.00 per share on or after April 2, 2017. The Company intends to apply to list the Series C Non-Cumulative Preferred Shares on the New York Stock Exchange under the symbol “ARHPrC.” The offering is being led by Wells Fargo Securities, LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated, Morgan Stanley & Co. LLC and UBS Securities LLC as joint book-running managers. Arch Capital Group Ltd., a Bermuda-based company with approximately $5.03 billion in capital at December 31, 2011, provides insurance and reinsurance on a worldwide basis through its wholly owned subsidiaries. This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any jurisdiction in which the offer, solicitation or sale is not permitted. The offering is being made pursuant to the Company’s effective shelf registration statement previously filed with the Securities and Exchange Commission. This offering may be made only by means of a prospectus, including a preliminary prospectus supplement, forming a part of the effective registration statement. You may obtain a copy of the preliminary prospectus supplement, the final prospectus supplement, when available, and accompanying prospectus from the Securities and Exchange Commission at www.sec.gov. Alternatively, the underwriters may arrange to send you these documents if you request them by contacting Wells Fargo Securities, LLC, 1525 W W.T. Harris Boulevard, NC0675, Charlotte, NC 28262, Attention: Syndicate Operations, by calling toll-free: (800) 326-5897 or by emailing: email@example.com; Merrill Lynch, Pierce, Fenner & Smith Incorporated toll-free at 1-800-294-1322; Morgan Stanley & Co. LLC toll free at 1-866-718-1649; or UBS Securities LLC, 299 Park Avenue New York, NY 10171, Attention: Prospectus Specialist or by calling toll free at 877-827-6444, ext. 561 3884. Cautionary Note Regarding Forward-Looking Statements The Private Securities Litigation Reform Act of 1995 provides a "safe harbor" for forward−looking statements. This release or any other written or oral statements made by or on behalf of Arch Capital Group Ltd. and its subsidiaries may include forward−looking statements, which reflect our current views with respect to future events and financial performance. All statements other than statements of historical fact included in or incorporated by reference in this release are forward−looking statements.