CB&I (NYSE: CBI) today announced that at the Company’s special meeting of shareholders held on December 18, 2012, CB&I shareholders overwhelmingly approved the proposal related to the acquisition of Shaw Group (NYSE: SHAW) by CB&I. The certified results indicate that over 90% of the shares voting at the special meeting were voted in favor of the acquisition proposal. A majority of the acquisition’s closing conditions have been met and CB&I expects the transaction to close in the first quarter 2013, subject to the satisfaction of remaining conditions. About CB&I CB&I (NYSE: CBI) engineers and constructs some of the world’s largest energy infrastructure projects. With premier process technology, proven EPC expertise, and unrivaled storage tank experience, CB&I executes projects from concept to completion. Safely. Reliably. Globally. For more information, visit www.CBI.com. Additional Information and Where to Find It This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. In connection with the proposed transaction, Chicago Bridge & Iron Company N.V. (“CB&I”) has filed with the Securities and Exchange Commission (“SEC”) a prospectus on Form 424B3 that includes a joint proxy statement of The Shaw Group Inc. (“Shaw”) and CB&I that also constitutes a prospectus of CB&I. CB&I and Shaw also plan to file other documents with the SEC regarding the proposed transaction. The definitive joint proxy statement/prospectus will be mailed to shareholders of Shaw and CB&I. INVESTORS AND SECURITY HOLDERS OF SHAW AND CB&I ARE URGED TO READ THE DEFINITIVE JOINT PROXY STATEMENT/PROSPECTUS (INCLUDING ANY AMENDMENTS OR SUPPLEMENTS THERETO) AND OTHER DOCUMENTS THAT WILL BE FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. Investors and shareholders will be able to obtain free copies of the definitive joint proxy statement/prospectus and other relevant documents filed by CB&I and Shaw, once such documents are filed with the SEC, through the website maintained by the SEC at http://www.sec.gov. Copies of the documents filed with the SEC by CB&I will be available free of charge on CB&I’s internet website at www.cbi.com under the tab “Investor Relations” and then under the tab “SEC Documents” or by contacting CB&I’s Investor Relations Department at 832-513-1200. Copies of the documents filed with the SEC by Shaw will be available free of charge on Shaw’s internet website at www.Shawgrp.com under the tab “Investor Relations” and then under the tab “SEC Filings” or by contacting Shaw’s Investor Relations Department at 225-987-7372. Participants in the Solicitation CB&I, Shaw, and their respective directors and executive officers may be deemed to be participants in the solicitation of proxies from the shareholders of Shaw and CB&I in connection with the proposed transaction. Information about the directors and executive officers of Shaw is set forth in Shaw’s proxy statement for its 2011 annual meeting of shareholders, which was filed with the SEC on December 15, 2011. Information about the directors and executive officers of CB&I is set forth in CB&I’s proxy statement for its 2012 annual meeting of shareholders, which was filed with the SEC on March 22, 2012. Other information regarding the participants in the proxy solicitation and a description of their direct and indirect interests, by security holdings or otherwise, is set forth in the definitive joint proxy statement/prospectus filed with the SEC on November 20, 2012 and will be contained in other relevant materials to be filed with the SEC in connection with the proposed transaction.