Martin Marietta Materials Inc. filed SEC Form 8-K: Results of Operations and Financial Condition, Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

MARTIN MARIETTA MATERIALS, INC.

(Exact name of Registrant as Specified in Its Charter)

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On April 30, 2026, the Company announced financial results for the first quarter ended March 31, 2026. The press release, dated April 30, 2026, is furnished as Exhibit 99.1 to this report and is incorporated by reference herein.

Item 7.01 Regulation FD Disclosure.

On April 30, 2026, the Company announced financial results for the first quarter ended March 31, 2026. The press release, dated April 30, 2026, is furnished as Exhibit 99.1 to this report and is incorporated by reference herein. Additional information about the quarter, and the Company’s use of non-GAAP financial measures, is available on the Company’s website at www.martinmarietta.com by clicking the heading “Reports & Filings” in the “Investors” section and then clicking the quick link “Non-GAAP Measures”.

The Company will host an online web simulcast of its first quarter 2026 earnings conference call on Thursday, April 30, 2026. The live broadcast of the Company’s conference call will begin at 10:00 a.m., Eastern Time, on April 30, 2026 and can be accessed by dialing +1 (646) 307-1963 and using conference ID 6288728. An online replay will be available approximately two hours following the conclusion of the live broadcast and will remain available for one year. A link to these events will be available on the Company’s website at www.martinmarietta.com. Additional information about the Company’s use of non-GAAP financial measures, as well as certain other financial or statistical information the Company may present at the conference call, will be provided on the Company’s website.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.