 RALEIGH, N.C., Jan. 27, 2022 GLOBE NEWSWIRE -- Martin Marietta Materials, Inc. NYSE:MLM Martin Marietta or the Company will host its fourth-quarter and full-year 2021 earnings conference call on Thursday, February 10, 2022 at 11:00 a.m. Eastern Time. The Company will release results for the quarter and year ended December 31, 2021, that morning before the market opens. 