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.
Martin Marietta Materials Chairman, President & CEO C. Howard Nye reported two tax-withholding dispositions of common stock related to equity compensation. On February 24, he disposed of 1,221 shares at $696.85 per share, and on February 23 he disposed of 1,805 shares at $683.60 per share, both to cover tax liabilities rather than open-market sales. After these transactions, he held 170,119 shares directly, and 70,400 shares were held indirectly through the Charles Howard Nye Irrevocable Trust.
Martin Marietta Materials EVP and CHRO Donald A. McCunniff reported a tax-related share disposition under a benefit transaction. On February 23, 2026, he disposed of 192 shares of common stock at $683.60 per share to satisfy tax withholding obligations. After this transaction, his reported direct holdings totaled 4,558 shares of Martin Marietta Materials common stock.
Martin Marietta Materials senior vice president and CIO Jason Paul Flynn reported two tax-related share dispositions under an equity award. On February 23, 177 shares of common stock were withheld at $683.60 per share, and on February 24, 30 shares were withheld at $696.85 per share. After these transactions, he directly owned 5,494 common shares.
Martin Marietta Materials senior vice president, controller and chief accounting officer Robert J. Cardin reported two tax-related share dispositions. On February 24, he disposed of 103 common shares at $696.85 per share to satisfy tax withholding obligations. On February 23, he similarly disposed of 209 shares at $683.60 per share for tax withholding. Following these transactions, he directly held 12,459 common shares.
Petro Michael J reported acquisition or exercise transactions in this Form 4 filing.
Martin Marietta Materials reported that Senior Vice President and Chief Financial Officer Michael J. Petro received an equity compensation grant of 931 shares of common stock on February 20, 2026. These shares were awarded as restricted stock units under the company’s Amended and Restated Stock-Based Award Plan and carry no purchase price.
The award vests in equal installments over three years from the grant date, meaning Petro earns the shares gradually over time as he continues in his role. Following this grant, his directly held common stock position increased to 12,703.6026 shares, reflecting ongoing alignment of executive compensation with shareholder interests through stock-based awards.
Martin Marietta Materials’ Chairman, President and CEO C. Howard Nye received equity awards of company common stock. On February 20, 2026, he acquired 2,216 shares at a grant value of $548.75 per share and an additional 6,405 shares at no cost, including a restricted stock unit award that vests in equal installments over three years. Following these grants, he directly owns 173,145 shares, with a further 70,400 shares held indirectly through the Charles Howard Nye Irrevocable Trust.
McCunniff Donald A. reported acquisition or exercise transactions in this Form 4 filing.
Martin Marietta Materials executive vice president and chief human resources officer Donald A. McCunniff received an award of 1,277 shares of common stock in the form of restricted stock units. The grant was made at no cash cost to him and was issued under the company’s Amended and Restated Stock-Based Award Plan.
The restricted stock units vest in equal annual installments over three years from the grant date, encouraging longer-term retention and alignment with shareholders. After this grant, McCunniff directly holds 4,750 shares of Martin Marietta common stock.
Martin Marietta Materials senior vice president and CIO Jason Paul Flynn reported stock awards on common shares. On February 20, 2026, he acquired 592 shares at a reported value of $548.75 per share and a further 595 shares at a stated price of $0.00 per share through grants.
Following these transactions, his directly held common stock increased to 5,701 shares. A related footnote explains that one award is a restricted stock unit grant under the Martin Marietta Materials, Inc. Amended and Restated Stock-Based Award Plan, vesting in equal annual installments over three years from the grant date.
Cardin Robert J reported acquisition or exercise transactions in this Form 4 filing.
Martin Marietta Materials senior vice president, controller and chief accounting officer Robert J. Cardin received an equity award of 658 shares of common stock in the form of restricted stock units. The award was granted at no cash cost to him and will vest in equal installments over three years from the grant date, encouraging longer-term alignment with the company’s performance.
Martin Marietta Materials completed a major asset exchange with Quikrete Holdings, trading its Midlothian, Texas cement plant, related cement terminals, North Texas ready-mix concrete assets and certain nonoperating land for Quikrete aggregates operations and $450 million in cash.
The acquired aggregates businesses produce about 20 million tons annually across Virginia, Missouri, Kansas and Vancouver, British Columbia, described as the largest aggregates acquisition in the company’s history. Management characterizes the deal as tax-efficient and aimed at shifting the portfolio toward higher-margin, less cyclical aggregates while preserving balance sheet flexibility.
Updated 2026 guidance now targets revenues of $7.16 billion, Adjusted EBITDA from continuing operations of $2.43 billion, and capital expenditures of $575 million. Aggregates shipment volumes are expected to grow 12.0% versus 2025 to 222 million tons, with overall aggregates average selling price rising 2.5% and organic ASP up 5.0%.