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.
This page provides access to U.S. Securities and Exchange Commission filings for Martin Marietta Materials, Inc. (NYSE: MLM), an American-based S&P 500 company and supplier of aggregates, cement, ready mixed concrete, asphalt, and magnesia specialties. Through these filings, investors can review the company’s official disclosures on its building materials and Magnesia Specialties businesses, financing arrangements and strategic plans.
Martin Marietta’s periodic reports on Forms 10-K and 10-Q, referenced in company communications, contain detailed information on its aggregates-led building materials operations, magnesia and dolomitic lime products, geographic footprint across 28 states, Canada and The Bahamas, and risk factors affecting construction-related demand. Current reports on Form 8-K, several of which are summarized here, disclose material events such as quarterly earnings announcements, preliminary financial results, strategic asset exchanges with Quikrete Holdings, Inc., and the acquisition of Premier Magnesia, LLC.
Other 8-K filings describe amendments to the company’s senior unsecured revolving credit facility and trade receivables securitization facility, including extensions of maturity dates and key terms. These documents help investors understand Martin Marietta’s liquidity, capital structure and access to credit. Filings also cover items such as executive appointments and investor presentations related to the company’s Strategic Operating Analysis and Review plans, including SOAR 2030.
On Stock Titan, Martin Marietta’s SEC filings are updated as they are posted to EDGAR. AI-powered summaries can help explain the contents of lengthy reports, highlight changes from prior filings and point out items such as quarterly results, guidance updates and major financing or portfolio transactions, allowing users to navigate MLM’s regulatory history more efficiently.
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.
Martin Marietta Materials director David C. Wajsgras reported an equity award under the company’s director stock plan. On this date, he acquired 56 common stock units at a reference price of $676.57 per share, increasing his directly held common stock to 4,646 shares.
The units were accrued under the Common Stock Purchase Plan for Directors and will be settled in stock in a lump sum or installments over time, generally after he ceases to be a non-employee director, according to his prior election under the plan.
Martin Marietta Materials director Pike Thomas reported an acquisition of company stock through an equity award. On the reported date, he received 47 shares of Martin Marietta Materials common stock at a price of $676.57 per share, classified as a grant or award acquisition.
Following this transaction, his directly held common stock position increased to 4,591 shares. The footnote explains that these common stock units were accrued under the Martin Marietta Materials, Inc. Common Stock Purchase Plan for Directors and will be settled in stock at future dates elected under that plan.
Martin Marietta Materials director John J. Koraleski reported an automatic equity award. On February 27, 2026, he acquired 69 shares of Common Stock as a grant or award acquisition at a reported price of $676.57 per share under the company’s Common Stock Purchase Plan for Directors.
Following this grant, his directly held Common Stock balance increased to 8,822 shares. The filing also shows indirect ownership of 2,000 shares through SJK HOLDINGS and INVESTMENTS, LLC and 4,900 shares held via the KORALESKI LIVING TRUST, reflecting additional positions associated with the director.
Martin Marietta Materials SVP and CFO Michael J. Petro reported two Form 4 transactions involving company common stock. On February 23, he had a tax-withholding disposition of 211 shares at $683.60 per share, and on February 24 a similar disposition of 94 shares at $696.85 per share. After these transactions, he directly owned 12,398.6026 shares of Martin Marietta Materials common stock.