Welcome to our dedicated page for MARTIN MARIETTA MATERIALS 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.
Our SEC filing database is enhanced with expert analysis from Rhea-AI, providing insights into the potential impact of each filing on MARTIN MARIETTA MATERIALS's stock performance. Each filing includes a concise AI-generated summary, sentiment and impact scores, and end-of-day stock performance data showing the actual market reaction. Navigate easily through different filing types including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, proxy statements (DEF 14A), and Form 4 insider trading disclosures.
Designed for fundamental investors and regulatory compliance professionals, our page simplifies access to critical SEC filings. By combining real-time SEC filing updates, Rhea-AI's analytical insights, and historical stock performance data, we provide comprehensive visibility into MARTIN MARIETTA MATERIALS's regulatory disclosures and financial reporting.
MARTIN MARIETTA MATERIALS INC (symbol: MLM) is the issuer of record for a Form 4 filing submitted to the SEC. Petro Michael J reported acquisition or exercise transactions in this Form 4 filing.
MARTIN MARIETTA MATERIALS INC (MLM) reported that Senior Vice President and Chief Financial Officer Michael J. Petro received an award of 9,331 shares of common stock in the form of restricted stock units on September 1, 2026. Following this grant, he holds 24,321.6026 shares of common stock directly.
The award was granted under the Martin Marietta Materials, Inc. Amended and Restated Stock-Based Award Plan and vests pro rata in three equal installments on the sixth, seventh and eighth anniversaries of the award date, subject to continued employment and other terms and conditions specified in the award agreement. No Rule 10b5-1 trading plan is indicated for this award.
MARTIN MARIETTA MATERIALS INC (MLM) reported that director David C. Wajsgras acquired 78 common stock units on August 31, 2026 under the company’s Common Stock Purchase Plan for Directors. These units are to be settled in stock at a future date, and his direct holdings after the award total 5,106 shares.
MARTIN MARIETTA MATERIALS INC (symbol: MLM) is the issuer of record for a Form 4 filing submitted to the SEC. Pike Thomas reported acquisition or exercise transactions in this Form 4 filing.
MARTIN MARIETTA MATERIALS INC (MLM) reports that director Thomas Pike received a grant of 66 common stock units on August 31, 2026 at a reference value of $518.70 per unit under the company’s Common Stock Purchase Plan for Directors. Following this award, he holds 5,029 units/shares directly, which are to be settled in stock in a lump sum or installments in accordance with his deferred-election terms under the plan.
MARTIN MARIETTA MATERIALS INC (MLM) director Martin J. Lyons reported an acquisition of 68 common stock units on August 31, 2026, as a grant or award under the company’s Common Stock Purchase Plan for Directors. Following this award, he holds a total of 442 shares/units in direct ownership.
The common stock units were accrued under the director stock purchase plan and will be settled in company stock, either in a lump sum or in installments, at future dates tied to when he ceases to be a Non-Employee Director and his elections under the plan. No Rule 10b5-1 trading plan is reported for this transaction.
MARTIN MARIETTA MATERIALS INC (MLM) reported that director Philipp Niemann received a grant of 337 shares of Common Stock on 2026-08-21, classified as a "grant, award, or other acquisition." The shares were acquired at a stated price of $0.0000 per share, bringing Niemann's directly held position to 337 shares.
Martin Marietta Materials Inc (MLM) has a new significant shareholder following its acquisition of Lhoist North America, Inc. from LNA Holding SRL. On August 21, 2026, Martin Marietta acquired all of Lhoist North America in exchange for $7 billion in cash and 10,953,543 newly issued shares of Martin Marietta common stock.
LNA Holding SRL, together with related Luxembourg entities Kalk en Dolomiet Maatschappij, Financiere de Gestions Internationales and GPI, reports beneficial ownership of 10,953,543 shares, or 15.4% of the 71,020,331 shares of common stock outstanding on the closing date, all held with shared voting and dispositive power. A shareholders’ agreement subjects these consideration shares to a 24‑month lock-up, with 50% released after 12 months and the remainder after 24 months, and grants LNA Holding the right to designate one director and one non-voting Board observer while ownership remains above specified share thresholds. The parties also entered into a registration rights agreement giving LNA Holding shelf, demand and piggyback registration rights for these shares, and a standstill limits aggregate ownership to 12,783,660 shares under defined conditions.
MARTIN MARIETTA MATERIALS INC (MLM) reported that LNA Holding SRL is the record holder of 10,953,543 shares of Common Stock, shown as indirectly owned in this initial ownership report. LNA Holding SRL is wholly owned by Kalk en Dolomiet Maatschappij SA, which is a direct and indirect subsidiary of Financiere de Gestions Internationales SCA, whose statutory manager is GPI SA.
Each of these entities may be deemed to share beneficial ownership of the shares held directly by LNA Holding SRL, and the individuals on GPI SA’s board disclaim beneficial ownership of the Common Stock beneficially owned by Financiere de Gestions Internationales SCA.
MARTIN MARIETTA MATERIALS INC (MLM) reported that Philipp Niemann has become an insider, filing an initial Form 3 as a director. The filing lists his role but shows no reported share holdings or transactions in Martin Marietta securities at this time.
Martin Marietta Materials, Inc. (MLM) completed its previously announced acquisition of Lhoist North America, Inc. on August 21, 2026. The company acquired all outstanding equity interests of LNA for approximately $7 billion in cash (subject to SSA adjustments) and 10,953,543 newly issued MLM shares valued at $6.5 billion based on a 15‑day VWAP.
A Shareholders Agreement with LNA Holding includes a lock-up on the consideration shares, with 50% released after 12 months and the remaining 50% after 24 months. LNA Holding can designate one director and one non‑voting observer while holding at least 7,102,033 shares (10%), stepping down to one director only above 5,326,525 shares (7.5%), with all rights ending below that level. LNA Holding and affiliates are also subject to a standstill capping ownership at 12,783,660 shares (18%).
Martin Marietta entered into a Registration Rights Agreement to file a shelf registration statement for resale of the consideration shares no later than 60 days before the first anniversary of closing. The Board size increased from ten to eleven, and Philipp Niemann, CEO of Lhoist S.A., joined the Board and will receive the standard non‑employee director package: a $135,000 annual cash retainer and $180,000 in annual RSUs. Management highlighted the combination as expanding its Specialties platform and establishing Martin Marietta as a leading limestone producer with more than 2 billion tons of reserves.
Martin Marietta Materials, Inc. (MLM) entered into a new Credit Agreement with JPMorgan Chase Bank, N.A. and other lenders providing a $1,500,000,000 five-year senior unsecured revolving credit facility (the “Revolving Facility”). This Revolving Facility replaces a prior credit agreement under which there were no borrowings outstanding.
Borrowings may bear interest at Term SOFR or a base rate, in each case plus a ratings-based margin. The Revolving Facility expires on August 18, 2031, when any outstanding principal and interest are due. The agreement requires a maximum Leverage Ratio of 3.75:1.00, temporarily increased to 4.75:1.00 and then 4.25:1.00 for specified quarters after the planned acquisition of Lhoist North America, Inc. Consolidated debt used in this ratio can be reduced by up to $500,000,000 of cash and cash equivalents if both the Revolving Facility and the accounts receivable securitization facility have no amounts outstanding.