Martin Marietta Materials, Inc. agreed to acquire New Frontier Materials, a construction materials platform based in Maryland Heights, Missouri, from its parent company Declaration Partners. The transaction marks Martin Marietta's expansion into the construction materials sector, adding a platform with an established portfolio of assets. New Frontier Materials operates as a standalone entity within Declaration Partners' investment portfolio, specializing in construction materials. The deal terms were not disclosed in the announcement. Martin Marietta, a leading supplier of aggregates and heavy building materials, aims to strengthen its market position through this acquisition.