Martin Marietta Materials (MLM) is an American producer of construction materials. The company was founded in 1939 and is headquartered in Raleigh, North Carolina, USA. It manufactures and delivers aggregates, ready mixed concrete, cement, asphalt and cement treated materials. Martin Marietta Materials operates in 26 US states, Canada, the Caribbean Islands and the Bahamas. Member of the S&P 500 Index, the company is traded on the New York Stock Exchange (NYSE). Learn about the Martin Marietta Materials share price at Capital.com.