MLM MARTIN MARIETTA MATERIALS INC Company Mergers 8-K Filing 2023 - Acquisition Martin Marietta Materials Inc. has entered into an Equity and Asset Purchase Agreement with CRH Americas Materials Inc. and CRH plc to acquire Martin Marietta South Texas Cement and its ready-mix concrete operations for $2.1 billion in cash.Get access to all SEC 8-K filings of the MARTIN MARIETTA MATERIALS INC