Martin Marietta confirms $13.5 billion Lhoist deal, shares trade lower on NYSE

By Anna Wagner, Analysts & Consensus desk. Reviewed prior to publication on 2026-06-30, 13:33.

Martin Marietta Materials (US5732841060) has confirmed a definitive agreement to acquire Lhoist North America in a cash-and-stock transaction valued at $13.5 billion, with the stock trading on the NYSE as investors absorb the deal terms, according to Investing.com and CNBC.

Deal size, funding mix and valuation

The company will pay $7.0 billion in cash and issue Martin Marietta shares worth $6.5 billion, with the equity component based on a 15-day volume-weighted average price prior to signing, as outlined in the confirmation of the agreement. Net leverage is projected at about 3.7 times at closing, while the transaction values Lhoist North America at roughly 15 times its 2025 adjusted EBITDA including anticipated cost savings, according to Investing.com.

Upon completion, the Berghmans family, owners of Lhoist Group, are expected to hold around 15 percent of the combined company, highlighting the sizeable share issuance involved in the deal, as noted in a Yahoo Finance summary. Martin Marietta also expects approximately $85 million in annual run-rate cost synergies once integration is complete, CNBC reports.

Market reaction and analyst commentary

Martin Marietta shares were trading roughly 3 percent lower in pre-market on Monday after the announcement, according to Investing.com, with subsequent trading seeing a decline of about 5 percent in the morning session as reported by CNBC. A separate Yahoo Finance brief notes that the shares fell 5.7 percent in an afternoon session, framing the move in the context of investor concerns about dilution and increased leverage linked to the equity-heavy funding mix.

The deal has also featured in broader materials-sector coverage. Dow Jones Newswires points out that producers of metals and other raw materials saw interest as deal activity picked up in building materials, citing Martin Marietta’s agreement to buy Lhoist North America as a key transaction in the segment. This situates the transaction within an active M&A backdrop for construction-related stocks listed in indices such as the S&P 500.

The business behind the deal

Martin Marietta Materials generates revenue primarily from aggregates such as crushed stone, sand and gravel, alongside cement and ready-mixed concrete supplied to infrastructure, commercial and residential projects across the United States. Lhoist North America adds a substantial lime and limestone portfolio with exposure to industrial customers, steelmaking and environmental applications, which the buyer cites as a strategic extension of its core materials franchise and an opportunity to tap growing demand for lime products in North America.

Where the stock trades today

Martin Marietta Materials shares (US5732841060) trade on the NYSE, and recent commentary from Yahoo Finance cited a price of $580.09 per share, leaving the stock around 18.1 percent below its 52-week high of $708.11 from February 2026.

Disclaimer: This article is for informational purposes only and does not constitute investment advice, a recommendation or an offer to buy or sell securities. All data are based on sources cited in the text and may change over time.