Martin Marietta Closes $13.5B Lhoist North America Acquisition, Issues 10.95M Shares
MLM is trading near its 52-week low of $522.19 (2.6% above the low).
Summary
Martin Marietta closed its $13.5B acquisition of Lhoist North America, paying ~$7B cash plus 10.95M shares. The seller gets a board seat and a 24-month lock-up on its shares.
Key Events · M&A and Partnerships · MLM
-
Lhoist North America Acquisition Closed
Martin Marietta completed its $13.5B acquisition of Lhoist North America on August 21, 2026, paying ~$7B cash plus 10,953,543 newly-issued shares valued at $6.5B.
-
Consideration Shares Issued
10,953,543 shares issued to LNA Holding under Section 4(a)(2) exemption, representing approximately 15% of Martin Marietta's outstanding shares based on the 71,020,330 shares implied by the 10% ownership threshold.
-
24-Month Lock-Up on Seller Shares
LNA Holding's Consideration Shares are locked up for 24 months: 50% released at the 12-month anniversary and the remaining 50% at the 24-month anniversary.
-
Board Expansion and New Director
Board increased from 10 to 11 directors; Philipp Niemann, CEO of Lhoist S.A., appointed to the Board and Finance Committee effective August 21, 2026.
Analysis · MLM · Energy & Transportation
Martin Marietta completed its transformative $13.5 billion acquisition of Lhoist North America on August 21, 2026, paying approximately $7 billion in cash and issuing 10,953,543 shares valued at $6.5 billion. The deal makes Martin Marietta the leading U.S. producer of limestone products and adds over 2 billion tons of high-quality reserves. LNA Holding, the seller, receives a board seat (Philipp Niemann, Lhoist CEO) and is subject to a 24-month lock-up on its shares, with 50% released at 12 months and 50% at 24 months. A registration rights agreement requires Martin Marietta to file a shelf registration for resale of those shares no later than 60 days before the first anniversary of closing. The company will provide updated full-year 2026 guidance with Q3 results.
How filings like this one have moved
In the 30 days to Aug 24, 2026, 44% of the 972 measured filings Wiseek scored 9 moved their stock by 5% or more by the next session's close. The median move was -0.11%. 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 $536.00 on NYSE in the Energy & Transportation sector, with a market capitalization of approximately $32.1B. The 52-week trading range was $522.19 to $710.97. This filing was assessed with positive market sentiment and an importance score of 9 out of 10.