NEW YORK, Dec. 21, 2011 /PRNewswire/ -- Transatlantic Holdings, Inc. (NYSE: TRH) ("Transatlantic") today announced that it has set a record date and a meeting date for a special meeting of its stockholders to consider and vote upon the adoption of the previously announced Agreement and Plan of Merger, dated as of November 20, 2011, by and among Transatlantic, Alleghany Corporation (NYSE: Y) ("Alleghany") and Shoreline Merger Sub, Inc. (formerly, Shoreline Merger Sub, LLC). Transatlantic stockholders of record at the close of business on Wednesday, January 4, 2012, will be entitled to receive the notice of, and to vote at, the special meeting. The special meeting will be held on Monday, February 6, 2012, at 10:00 a.m., New York City time, at The Down Town Association, 60 Pine Street, New York, N.Y. Goldman, Sachs & Co. and Moelis & Company LLC are acting as financial advisors and Gibson, Dunn & Crutcher LLP is acting as legal counsel to Transatlantic. About Transatlantic Holdings, Inc. Transatlantic Holdings, Inc. is a leading international reinsurance organization headquartered in New York, with operations on six continents. Its subsidiaries, Transatlantic Reinsurance Company®, Trans Re Zurich Reinsurance Company Ltd. and Putnam Reinsurance Company, offer reinsurance capacity on both a treaty and facultative basis ― structuring programs for a full range of property and casualty products, with an emphasis on specialty risks. Visit – www.transre.com – for additional information about Transatlantic. Additional Information about the Proposed Transaction and Where to Find It In connection with the proposed transaction between Alleghany and Transatlantic, Alleghany filed with the SEC on December 21, 2011 Amendment No. 1 to its registration statement on Form S-4 that includes a preliminary joint proxy statement of Alleghany and Transatlantic that also constitutes a prospectus of Alleghany. This communication is not a substitute for the joint proxy statement/prospectus or any other document that Transatlantic or Alleghany may file with the SEC or send to their stockholders in connection with the proposed transaction. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE FORM S-4, INCLUDING THE PRELIMINARY JOINT PROXY STATEMENT/PROSPECTUS FILED AND OTHER RELEVANT DOCUMENTS THAT WILL BE FILED WITH THE SEC (INCLUDING THE DEFINITIVE JOINT PROXY STATEMENT/PROSPECTUS) IF AND WHEN THEY BECOME AVAILABLE, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. You may obtain a free copy of the preliminary joint proxy statement/prospectus and other relevant documents filed by Transatlantic and Alleghany with the SEC at the SEC's website at www.sec.gov. You may also obtain these documents by contacting Transatlantic's Investor Relations department at Transatlantic Holdings, Inc., 80 Pine Street, New York, New York 10005, or via e-mail at email@example.com, or by contacting Alleghany at Alleghany Corporation, Attention: Investor Relations, 7 Times Square Tower, New York, New York 10036, (212) 752-1356. Alleghany and Transatlantic and their respective directors and executive officers and other members of management and employees may be deemed to be participants in the solicitation of proxies in respect of the proposed transaction. Information about Alleghany's directors and executive officers is available in Alleghany's proxy statement dated March 17, 2011 for its 2011 Annual Meeting of Stockholders and in the preliminary joint proxy statement/prospectus filed with the SEC on December 21, 2011. Information about Transatlantic's directors and executive officers is available in Transatlantic's proxy statement dated April 8, 2011 for its 2011 Annual Meeting of Stockholders and in the preliminary joint proxy statement/prospectus filed by Alleghany with the SEC on December 21, 2011. Additional information regarding the participants in the proxy solicitation and a description of their direct and indirect interests, by security holdings or otherwise, will be, to the extent required, contained in the definitive joint proxy statement/prospectus and other relevant materials to be filed with the SEC regarding the merger. Investors should read the definitive joint proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from Alleghany or Transatlantic using the sources indicated above. This document shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the U.S. Securities Act of 1933, as amended.