Martin Marietta Materials Declares Regular Cash Dividend $0.40/Share

Anne H. Lloyd, Executive Vice President, Chief Financial Officer and Treasurer of Martin Marietta Materials, Inc. (NYSE: MLM), today announced that the Board of Directors has declared a regular quarterly cash dividend of $0.40 per share on the Corporation's common stock. This dividend, which represents a cash dividend of $1.60 per share on an annualized basis, is payable March 30, 2012, to shareholders of record at the close of business on March 1, 2012.