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.
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%.
Martin Marietta Materials, Inc. filed a Form S-3 shelf registration to register debt securities, common stock, preferred stock and warrants for sale from time to time after the effective date. The prospectus permits offerings on a continuous or delayed basis and states net proceeds will be used for general corporate purposes.
The prospectus notes the company is authorized to issue up to 100,000,000 shares of common stock and 10,000,000 shares of preferred stock, and that 60,309,739 shares of common stock were issued and outstanding as of December 31, 2025. Distribution methods listed include underwritten offerings, at-the-market sales, private placements and other means described in prospectus supplements.
Martin Marietta Materials presents itself as a leading U.S. aggregates-led building materials and magnesia products company, operating about 400 quarries, mines and distribution yards across 28 states, Canada and The Bahamas. Aggregates generated 88% of reportable segment gross profit in 2025, underscoring the core focus on stone, sand and gravel used in infrastructure, nonresidential and residential construction.
The company reshaped its portfolio with major 2024–2025 transactions. It sold its South Texas cement and related ready-mix operations to CRH for $2.1 billion in cash, recording a pretax gain of $1.3 billion, and used proceeds to help fund the $2.05 billion Blue Water Industries Southeast aggregates acquisition. Additional bolt-on aggregates deals in South Florida, Southern California, West Texas and Minnesota further deepened its footprint.
In 2025 Martin Marietta also bought Premier Magnesia, expanding its Specialties segment, and signed an asset-exchange agreement with QUIKRETE that would add aggregates facilities producing about 20 million tons annually while divesting its Midlothian cement plant and most remaining Texas ready-mix assets, which are classified as held for sale and reported as discontinued operations. Management highlights roughly 85 years of average aggregates reserves and emphasizes exposure to public infrastructure demand, balanced by detailed risk disclosures around construction cyclicality, weather, regulation, climate transition and integration of acquisitions.
Martin Marietta Materials reported equity compensation activity for SVP and CFO Michael J. Petro. He acquired 1,724 shares of common stock at no cost through the settlement of previously granted performance share units. These units were granted on February 24, 2023, and tied to performance goals measured from January 1, 2023 through December 31, 2025.
On February 17, 2026, the company’s Management Development and Compensation Committee certified the achievement of the applicable performance goals and approved settlement of the grant. On the same date, 758 shares were disposed of at $666.53 per share to cover tax obligations, a tax-withholding disposition rather than an open-market sale. Following these transactions, Petro directly holds 11,772.6026 common shares.
Martin Marietta Materials senior vice president and CIO Jason Paul Flynn reported equity compensation activity involving company common stock. He acquired 222 shares at no cost as a grant and award settlement, increasing his direct holdings as part of long-term incentive compensation.
These 222 shares reflect the settlement of previously granted performance share units tied to goals measured from January 1, 2023 through December 31, 2025, which were certified and approved for settlement on February 17, 2026. In a separate tax-withholding disposition, 107 shares were delivered at a price of $666.53 per share to cover tax obligations, leaving him with 4,514 directly owned shares after the transactions.
Martin Marietta Materials Chairman, President and CEO C. Howard Nye reported equity compensation activity in the form of common stock. He acquired 22,365 shares at $0.00 per share as a grant/award, reflecting settlement of performance share units previously granted under the company’s stock-based award plan.
On the same date, 9,717 shares of common stock were disposed of at $666.53 per share to satisfy tax obligations through a tax-withholding disposition. Following these transactions, Nye directly owned 164,524 common shares, and an additional 70,400 shares were held indirectly through the Charles Howard Nye Irrevocable Trust.
Martin Marietta Materials senior vice president, controller and chief accounting officer Robert J. Cardin reported equity compensation activity in company common stock. He acquired 1,869 shares at no cost through the settlement of previously granted performance share units, increasing his direct holdings before tax withholding.
On the same date, 822 shares were disposed of to satisfy tax obligations related to this award, leaving him with 12,113 directly owned shares afterward. The performance share units were granted in February 2023 and vested based on achievement of performance goals over the 2023–2025 period, with goals certified and settlement approved on February 17, 2026.