Martin Marietta Finalizes $13.5B Acquisition of Lhoist North America, Issues $6.5B in Stock, Secures $7B Bridge Loan
MLM is trading near its 52-week low of $525.38 (11% above the low) on elevated volume (2.5× avg).
Summary
Martin Marietta Materials has entered into a definitive agreement to acquire Lhoist North America for $13.5 billion, funded by $7 billion in cash and $6.5 billion in newly issued stock, with a $7 billion bridge loan secured for the cash portion.
Key Events · M&A and Partnerships · MLM
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Definitive Acquisition Agreement
Martin Marietta Materials, Inc. entered into a Securities Sale Agreement to acquire Lhoist North America, Inc. for a total consideration of $13.5 billion.
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Financing Structure
The acquisition is financed with $7 billion in cash and $6.5 billion through the issuance of 10,953,543 new shares of Martin Marietta common stock.
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Significant Shareholder & Board Representation
LNA Holding SRL, the seller, is expected to hold approximately 15% of Martin Marietta's outstanding common stock post-closing and will have the right to designate one director and one non-voting board observer.
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Share Lock-Up and Standstill
The newly issued shares to LNA Holding are subject to a 24-month lock-up period, with 50% released after 12 months, and LNA Holding is subject to a standstill agreement restricting further share acquisitions beyond 18%.
Analysis · MLM · Energy & Transportation
This filing details the definitive agreement for Martin Marietta's substantial $13.5 billion acquisition of Lhoist North America, a move that significantly expands its market position. The transaction is financed through a combination of $7 billion in cash and $6.5 billion in newly issued common stock. The stock component results in the seller, LNA Holding, becoming a major shareholder with approximately 15% ownership and board representation, subject to a lock-up period. The company also secured a $7 billion bridge loan to cover the cash portion, indicating a significant increase in leverage. This is a transformational deal with considerable financial and strategic implications.
How filings like this one have moved
In the 30 days to Oct 2, 2026, 40.6% of the 330 measured filings Wiseek scored 9 moved their stock by 5% or more by the next session's close. The median move was -0.38%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, MLM was trading at $581.23 on NYSE in the Energy & Transportation sector, with a market capitalization of approximately $34.9B. The 52-week trading range was $525.38 to $710.97. This filing was assessed with neutral market sentiment and an importance score of 9 out of 10.