Item 2.02 Results of Operations and Financial Condition.

On February 12, 2013, the Corporation announced financial results for the fourth quarter and year ended December 31, 2012. The press release, dated February 12, 2013, is furnished as Exhibit 99.1 to this report and is incorporated by reference herein.

Item 7.01 Regulation FD Disclosure.

On February 12, 2013, the Corporation announced financial results for the fourth quarter and year ended December 31, 2012. The press release, dated February 12, 2013, is furnished as Exhibit 99.1 to this report and is incorporated by reference herein. Additional information about the quarter, and the Corporation's use of non-GAAP financial measures, which is available on the Corporation's Web site at www.martinmarietta.com by clicking the heading "Financials", in the "Investors" section and then clicking the quick link "Non-GAAP Financial Measures".

The Corporation will host an online Web simulcast of its fourth-quarter 2012 earnings conference call on Tuesday, February 12, 2013. The live broadcast of the Corporation's conference call will begin at 2:00 p.m., Eastern Time, on February 12, 2013. An online replay will be available approximately two hours following the conclusion of the live broadcast. A link to these events will be available at the Corporation's Web site at www.martinmarietta.com. For those investors without online web access, the conference call may also be accessed by calling 970-315-0423, confirmation number 96829448. Additional information about the Corporation's use of non-GAAP financial measures, as well as certain other financial or statistical information the Corporation may present at the conference call, will be provided on the Corporation's Web site.

Item 9.01 Financial Statements and Exhibits.

(c) Exhibits

99.1 Press Release dated February 12, 2013, announcing financial results for the fourth quarter and year ended December 31, 2012.

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