Welcome to our dedicated page for Martin Mari Mat SEC filings (Ticker: MLM), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Martin Marietta Materials filings document an operating company whose disclosures cover aggregates and heavy building materials operations, portfolio transactions, financing arrangements, governance, safety reporting, and operating results. Form 8-K reports include earnings releases, Regulation FD materials, executive appointments and related employment agreements, mine-safety notices, credit-facility amendments, and completed acquisitions or dispositions of assets.
Proxy materials describe annual-meeting matters, board and executive compensation governance, shareholder voting items, and performance discussion tied to the company’s aggregates, building materials, and Specialties businesses. Capital-structure disclosures include senior unsecured revolving credit facility terms, while transaction filings record completed exchanges involving aggregates, cement, ready-mixed concrete, land, and cash consideration.
Martin Marietta Materials Inc Schedule 13G shows Vanguard Portfolio Management beneficially owned 3,167,718 shares of Common Stock, representing 5.25% of the class as reported for the period ending 03/31/2026. The filing lists 7,274 shares of sole voting power and 3,167,718 shares of sole dispositive power.
The filing states the reported holdings reflect securities managed by Vanguard Portfolio Management LLC and specified Vanguard affiliates and includes shares held by Vanguard funds and managed accounts. The signature block is by Head of Global Fund Administration on 04/29/2026.
Martin Marietta Materials, Inc. appointed Christopher W. Samborski as Executive Vice President and Chief Operating Officer, effective May 1, 2026. Samborski has led the company’s West and Specialties Divisions and previously held strategic finance and supply chain roles after joining Martin Marietta in 2018.
Under an offer letter and amended employment agreements, his base salary will be $775,000 with a target annual incentive of 100% of salary and a target long-term incentive of 260% of salary. He will also receive a one-time $5,000,000 restricted stock unit grant vesting in years six through eight. If terminated without cause or he resigns for good reason, he is eligible for severance equal to three times salary plus target bonus, up to three years of health benefits, and continued equity vesting, alongside additional protections following a change of control.
Martin Marietta Materials, Inc. asks shareholders to elect 10 directors, ratify its auditor, approve executive pay on an advisory basis, and adopt an amended stock-based award plan at the 2026 annual meeting.
In 2025 the company reported $6.2 billion in revenue from continuing operations, record aggregates gross profit of $1.7 billion, and record aggregates gross profit per ton of $8.45. It increased its quarterly dividend by about 5% and, with share repurchases, returned $647 million to shareholders.
The proxy highlights completion of the SOAR 2025 strategy, cumulative Total Shareholder Return of 126% since January 1, 2021 versus 96% for the S&P 500, major portfolio moves including a large asset exchange with QUIKRETE and additional acquisitions, and continued emphasis on safety, sustainability, and board refreshment, including two director retirements and two new nominees.
The Vanguard Group filed Amendment No. 12 to a Schedule 13G/A reporting for Martin Marietta Materials Inc. The filing states beneficial ownership: 0 shares representing 0% of the class and zero voting and dispositive power as of the filing. The amendment explains an internal realignment effective January 12, 2026, under SEC Release No. 34-39538, after which certain Vanguard subsidiaries report holdings separately.
Schoen George Frederick reported acquisition or exercise transactions in this Form 4 filing.
Martin Marietta Materials executive George Frederick Schoen, EVP, General Counsel and Corporate Secretary, received a grant of 23,673 restricted stock units of common stock at no cost. The award was made under the company’s Amended and Restated Stock-Based Award Plan and vests in equal installments over eight years, subject to continued employment and other award conditions. Following this grant, he directly holds 23,673 shares/units.
Petro Michael J reported acquisition or exercise transactions in this Form 4 filing.
Martin Marietta Materials SVP and CFO Michael J. Petro received an equity award of 2,960 shares of common stock. The shares were granted as a restricted stock unit award at no cash purchase price and increased his directly held common stock to 15,358.6026 shares.
The award was granted under the Martin Marietta Materials, Inc. Amended and Restated Stock-Based Award Plan. It vests in three equal installments on the third, fourth, and fifth anniversaries of the award date, subject to continued employment and other conditions in the award agreement.
Nye C Howard reported acquisition or exercise transactions in this Form 4 filing.
Martin Marietta Materials Chairman, President and CEO C. Howard Nye received an equity grant tied to company stock. He was awarded 5,919 restricted stock units on common stock at no cash cost, increasing his directly held shares to 176,038.
The award was granted under the company’s Amended and Restated Stock-Based Award Plan and will cliff vest on the third anniversary of the award date, subject to continued employment and other terms in the award agreement. Nye also indirectly holds 70,400 shares through the Charles Howard Nye Irrevocable Trust.
McCunniff Donald A. reported acquisition or exercise transactions in this Form 4 filing.
Martin Marietta Materials executive Donald A. McCunniff, EVP and CHRO, received a grant of 2,960 shares of common stock as a restricted stock unit award. The award was granted under the company’s Amended and Restated Stock-Based Award Plan and will cliff vest on the third anniversary of the award date, subject to continued employment and other conditions in the award agreement. Following this award, his directly owned common stock holdings total 7,518 shares.
Martin Marietta Materials Inc executive George Frederick Schoen, EVP, General Counsel and Corporate Secretary, filed an initial statement of beneficial ownership of securities. The filing reports that he holds no shares of the company’s common stock directly following the reported date.