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Form 8-K · Current Report · Filed 2026-08-05

Martin Marietta Receives Regulatory Approval for Lhoist North America Acquisition

Martin Marietta Materials, Inc. announced that it has received all necessary regulatory approvals for its acquisition of Lhoist North America, Inc. The transaction, which was previously announced, involves Martin Marietta acquiring all outstanding equity interests in Lhoist North America for $13.5 billion in cash and shares of Martin Marietta common stock. The deal is expected to close in the third quarter of 2026, subject to customary closing conditions. Upon completion, Martin Marietta is expected to become the nation's leading producer of lime and limestone solutions.

Filer
Martin Marietta Materials Inc. MLM · NYSE
Filed
Accession
0000950157-26-000850
CIK
0000916076
Signal
High impactBasic Materials

Items reported

Item events

Reported Item

M&A Transaction Regulatory Approval

Market reaction

Close before filing

$555.82

Since filing

+0.0%

Latest close

$555.82

What happened, not what will happen — closing prices around the filing date.

Precedent

Previous filings from MLM reporting the same item, with the next session's move:

Insider tape

Within 45 days of this filing, MLM insiders reported 1 Form 4 transaction — net selling of $200K.

Full MLM insider history →

About Martin Marietta Materials Inc.

Martin Marietta Materials Inc. is a leading supplier of building materials, primarily aggregates like crushed stone, sand, and gravel, as well as cement and concrete products in the United States. Its primary purpose is to support the construction industry by providing essential raw materials used in infrastructure projects, commercial and residential construction, and the development of public works like roads, bridges, and airports. Martin Marietta Materials is heavily involved in sectors such as construction, transportation, and energy, where its products are critical for foundational building and maintenance. The company plays a significant role in regional and national economic development, given the essential nature of its offerings in the construction and infrastructure sectors. With a broad geographic footprint and a diverse product line, Martin Marietta Materials holds a strategic position within the market, contributing to the durability and growth of urban and rural communities alike.

Exchange NYSE Industry Building Materials Company website ↗

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