SEPTInvestingStart Free

MLM SCHEDULE 13D: SEC filing

A Schedule 13D was

Filed with the SEC on · accession 0001493152-26-039879

MLM filed a SCHEDULE 13D (schedule 13d) with the SEC on Aug 24, 2026. A Schedule 13D was filed by Lhoist Group-related individuals disclosing board members and their principal occupations. The stock moved -0.3% by the first close after the filing.

Summary of the filing

A Schedule 13D was filed by Lhoist Group-related individuals disclosing board members and their principal occupations. The filing identifies Jean-Pierre Berghmans, Elisabeth van der Vaeren, Pascal Rakovsky, and René Beltjens as directors associated with the Lhoist Group.

For details, click here →

Key details

Affiliated entity of the filing personsLhoist Group
Subject companyMartin Marietta Materials Inc
DirectorJean-Pierre Berghmans
DirectorElisabeth van der Vaeren
DirectorPascal Rakovsky
DirectorRené Beltjens

How MLM stock reacted

Close before

$534.92

Aug 21, 2026

First close after

-0.34%

$533.11

5 trading days

-0.72%

$531.05

Since filing

-3.14%

$518.15

✦ Ask GOAX AI about this filing — what it means for MLM, what changed since its last filings and what to watch next.

Try it free for 7 days

🔔 Want to stay updated on new SEC filings for MLM?

Click here

Frequently asked questions

What did MLM file with the SEC on Aug 24, 2026?

MLM filed a SCHEDULE 13D (SEC filing). A Schedule 13D was filed by Lhoist Group-related individuals disclosing board members and their principal occupations. The filing identifies Jean-Pierre Berghmans, Elisabeth van der Vaeren, Pascal Rakovsky, and René Beltjens as directors associated with the Lhoist Group.

How do I read a SCHEDULE 13D?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13D (schedule 13d): A report the company filed with the SEC (the US market regulator).

How did MLM stock react to this filing?

MLM closed at $534.92 before the filing and $533.11 on Aug 24, 2026 (-0.34%). Five trading days later: $531.05 (-0.72%).

Other MLM SEC filings

Get alerts when MLM files with the SEC, plus live charts, key levels and news for 13,000+ stocks.

Try SEPT free for 7 days
MLM overviewMLM analysisMLM newsLatest SEC filings