MLM MARTIN MARIETTA MATERIALS INC Earnings Reports 8-K Filing 2025 - Financial Statements On April 30, 2025, Martin Marietta Materials Inc. announced its financial results for the first quarter that ended on March 31, 2025, with further details available on their website and a scheduled conference call for discussion.Get access to all SEC 8-K filings of the MARTIN MARIETTA MATERIALS INC