 RALEIGH, N.C., Jan. 25, 2023 GLOBE NEWSWIRE -- Martin Marietta Materials, Inc. NYSE:MLM Martin Marietta or the Company will host its fourth-quarter and full-year 2022 earnings conference call on Wednesday, February 15, 2023 at 10:00 a.m. Eastern Time. The Company will release results for the quarter and year ended December 31, 2022, that morning before the market opens. 