Official announcements (8-K)

Shared documents (Item 9.01)

Attached documents only, such as a press release.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

In the company's wordsOn November 4, 2026, the Company announced financial results for the third quarter ended September 30, 2026. The press release, dated November 4, 2026, is furnished as Exhibit 99.1 to this report and is incorporated by reference herein.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

In the company's wordsOn November 4, 2026, the Company announced financial results for the third quarter ended September 30, 2026. The press release, dated November 4, 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 third quarter 2026 earnings conference call on Wednesday, November 4, 2026. The live broadcast of the …

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

In the company's wordsOn September 15, 2026, Martin Marietta Materials, Inc., (the “Corporation”) and its wholly-owned subsidiary, Martin Marietta Funding LLC (“MM Funding”), entered into the Eighteenth Amendment (the “Eighteenth Amendment”) to its Credit and Security Agreement with Truist Bank, successor by merger to SunTrust Bank (the “Administrative Agent”), dated as of April 19, 2013 (the Credit and Security Agreement, as amended, the “Credit and Security Agreement”). Pursuant to the Eighteenth Amendment, the scheduled maturity date of the facility was extended to September 15, 2027. The Credit and Security Agreement is a $500,000,000 trade receivables securitization facility backed by …

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

In the company's wordsShareholders Agreement As contemplated by the SSA, at the Closing, Martin Marietta entered into a shareholders agreement (the “Shareholders Agreement”) with LNA Holding and, solely for the purposes of the standstill provisions set forth therein, Financière de Gestions Internationales, a société en commandite par actions organized under the laws of Luxembourg (“FGI”). Under the Shareholders Agreement, LNA Holding and its affiliates will be subject to a lock-up period with respect to the Consideration Shares, with 50% of such shares released from the lock-up on the 12-month anniversary of the Closing and the remaining 50% of such shares released from the lock-up on the …

Completed buying or selling a business or major assets (Item 2.01)

Buying or selling a business changes what the company owns and how it earns money.

In the company's wordsThe information set forth in the Introductory Note of this Current Report on Form 8-K is incorporated herein by reference.

Sold shares without a public offering (Item 3.02)

New shares spread the profit across more shares (dilution).

In the company's wordsThe information set forth in the Introductory Note and Item 1.01 of this Current Report on Form 8-K is incorporated by reference into this Item 3.02. The Consideration Shares were issued in reliance upon the exemption from the registration requirements of the Securities Act of 1933, as amended, provided by Section 4(a)(2) thereof as a transaction by an issuer not involving any public offering.

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

In the company's wordsOfficers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers Pursuant to the Shareholders Agreement, on August 21, 2026, the Board increased its size from ten to eleven directors and appointed Mr. Philipp Niemann, effective as of August 21, 2026, to fill the newly-created directorship. Mr. Niemann will serve until Martin Marietta’s 2027 Annual Meeting of Shareholders. Mr. Niemann will serve on the Finance Committee of the Board. Mr. Niemann currently serves as the Chief Executive Officer of Lhoist S.A. (“Lhoist”). From April 2022 to October 2025, Mr. Niemann served as President and Chief Executive Officer of LNA and as a …

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

In the company's wordsOn August 24, 2026, Martin Marietta issued a press release announcing the Closing of the Transaction. A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated by reference herein. The information set forth in this Item 7.01 and the Exhibits incorporated by reference herein shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

In the company's wordsOn August 18, 2026, Martin Marietta Materials, Inc. (the “Corporation”) entered into a Credit Agreement with JPMorgan Chase Bank, N.A. (“JPMCB”), as administrative agent, and the lenders and issuing lenders party thereto (the “Credit Agreement”), which provides for a $1,500,000,000 five-year senior unsecured revolving facility (the “Revolving Facility”). Borrowings under the Revolving Facility bear interest, at the Corporation’s option, at rates based upon Term SOFR or a base rate, plus, for each rate, a margin determined in accordance with a ratings-based pricing grid. The Revolving Facility replaces the Corporation’s existing Credit Agreement, dated as of December 21, …

Ended a major agreement (Item 1.02)

Losing a major agreement can affect future sales or costs.

In the company's wordsThe information required by Item 1.02 is included under Item 1.01 “Entry into a Material Definitive Agreement” and that information is incorporated herein by reference.

Took on a major new debt or obligation (Item 2.03)

New borrowing adds to what the company owes and the interest it pays.

In the company's wordsThe information required by Item 2.03 is included under Item 1.01 “Entry into a Material Definitive Agreement” and that information is incorporated herein by reference.

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

In the company's wordsEntry into a Material Definitive Agreement. Information set forth under Item 2.03 of this Current Report on Form 8-K is incorporated herein by reference.

Took on a major new debt or obligation (Item 2.03)

New borrowing adds to what the company owes and the interest it pays.

In the company's wordsOn August 14, 2026, Martin Marietta Materials, Inc. (“Martin Marietta”) issued $750 million aggregate principal amount of 4.850% Senior Notes due 2029 (the “2029 Notes”), $1,250 million aggregate principal amount of 5.200% Senior Notes due 2032 (the “2032 Notes”), $1,000 million aggregate principal amount of 5.400% Senior Notes due 2034 (the “2034 Notes”), $1,500 million aggregate principal amount of 5.625% Senior Notes due 2036 (the “2036 Notes”) and $1,000 million aggregate principal amount of 6.375% Senior Notes due 2056 (the “2056 Notes” and, together with the 2029 Notes, 2032 Notes, 2034 Notes and 2036 Notes, the “Notes”) pursuant to a base indenture, dated as of May …

Announced another event (Item 8.01)

Another event the company chose to report publicly.

In the company's wordsIn connection with the Notes offering, copies of the legal opinions of Robinson, Bradshaw & Hinson, P.A. and Cravath, Swaine & Moore LLP relating to the Notes are attached hereto as Exhibits 5.1 and 5.2, respectively.

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

In the company's wordsEntry into a Material Definitive Agreement. In connection with the offering of $750 million aggregate principal amount of 4.850% Senior Notes due 2029 (the “2029 Notes”), $1,250 million aggregate principal amount of 5.200% Senior Notes due 2032 (the “2032 Notes”), $1,000 million aggregate principal amount of 5.400% Senior Notes due 2034 (the “2034 Notes”), $1,500 million aggregate principal amount of 5.625% Senior Notes due 2036 (the “2036 Notes”) and $1,000 million aggregate principal amount of 6.375% Senior Notes due 2056 (the “2056 Notes” and, together with the 2029 Notes, 2032 Notes, 2034 Notes and 2036 Notes, the “Notes”) on August 11, 2026, Martin Marietta …

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

In the company's wordsIn accordance with General Instruction B.2. of Form 8-K, the following information and the attached Exhibit 99.1 shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Martin Marietta disclaims any intention or obligation to update or revise this information. Attached as Exhibit 99.1, and incorporated herein by reference, is a copy of Martin Marietta’s press release dated August 12, 2026, announcing the pricing of the Notes. This current report does not constitute an offer to sell or a solicitation of an …

Announced another event (Item 8.01)

Another event the company chose to report publicly.

In the company's wordsAs previously disclosed, on June 27, 2026, Martin Marietta Materials, Inc., a North Carolina corporation (the “Company”), entered into a Securities Sale Agreement (the “Securities Sale Agreement”) with LNA Holding SRL (“LNA Holding”), a société à responsabilité limitée organized under the laws of Belgium, pursuant to which the Company will acquire all of the outstanding equity interests in Lhoist North America, Inc. (“LNA”), a wholly-owned direct subsidiary of LNA Holding (such transaction, the “LNA Transaction”). Each party’s obligation to consummate the LNA Transaction is conditioned upon the satisfaction or waiver of customary closing conditions, including the receipt …

Announced another event (Item 8.01)

Another event the company chose to report publicly.

In the company's wordsAs previously announced, on June 27, 2026, Martin Marietta Materials, Inc., a North Carolina corporation (“Martin Marietta” or the “Company”), and LNA Holding SRL, a société à responsabilité limitée organized under the laws of Belgium, entered into a Securities Sale Agreement, pursuant to which Martin Marietta will acquire all of the outstanding equity interests in Lhoist North America, Inc., which owns and operates the business of producing, distributing, marketing and selling lime, dolomitic lime, limestone- and dolomitic stone-based industrial minerals and products, and aggregates in North America, for $13.5 billion in cash and shares of Martin Marietta common stock …

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

In the company's wordsOn August 4, 2026, Martin Marietta Materials, Inc. (the “Company”) announced that the Company has promoted Michael J. Petro to Executive Vice President, Chief Financial Officer. In connection with his promotion to the role of Executive Vice President, Chief Financial Officer, the Company and Mr. Petro executed an employment agreement (the “Employment Agreement”) and an amended and restated employment protection agreement (the “Employment Protection Agreement”). Pursuant to the Employment Agreement, Mr. Petro’s base salary will be $750,000, his target annual incentive award will be 100% of base salary, his target long-term incentive award will be 260% of base salary, and …

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

In the company's wordsOn July 30, 2026, the Company announced financial results for the second quarter ended June 30, 2026. The press release, dated July 30, 2026, is furnished as Exhibit 99.1 to this report and is incorporated by reference herein.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

In the company's wordsOn July 30, 2026, the Company announced financial results for the second quarter ended June 30, 2026. The press release, dated July 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 second quarter 2026 earnings conference call on Thursday, July 30, 2026. The live broadcast of the Company’s …

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

In the company's words1 to Credit Agreement On July 10, 2026, Martin Marietta Materials, Inc. (the “Corporation”) entered into Amendment No. 1 (the “Amendment”) with JPMorgan Chase Bank, N.A. (“JPMCB”) and certain financial institutions, as lenders, to the Corporation’s $800,000,000 five-year senior unsecured revolving credit facility with JPMCB, as administrative agent, and the lenders and issuing lenders party thereto (the “Revolving Credit Agreement”, and the facility thereunder, the “Revolving Facility”). The Amendment amends the Revolving Credit Agreement to modify the financial covenant contained therein to provide that if the Corporation’s previously announced acquisition of Lhoist …

Took on a major new debt or obligation (Item 2.03)

New borrowing adds to what the company owes and the interest it pays.

In the company's wordsThe information is included under Item 1.01 “Entry into a Material Definitive Agreement” with respect to the Term Credit Agreement and is incorporated herein by reference.

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

Sold shares without a public offering (Item 3.02)

New shares spread the profit across more shares (dilution).

Announced another event (Item 8.01)

Another event the company chose to report publicly.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

Shared shareholder vote results (Item 5.07)

How shareholders voted on board members and proposals.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

Completed buying or selling a business or major assets (Item 2.01)

Buying or selling a business changes what the company owns and how it earns money.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

Mine safety issue reported (Item 1.04)

Safety problems can lead to fines or stopped operations.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

Took on a major new debt or obligation (Item 2.03)

New borrowing adds to what the company owes and the interest it pays.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

Shared shareholder vote results (Item 5.07)

How shareholders voted on board members and proposals.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

Took on a major new debt or obligation (Item 2.03)

New borrowing adds to what the company owes and the interest it pays.

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.