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  4. [Form 3] MARTIN MARIETTA MATERIALS INC Initial Statement of Beneficial Ownership

10% owner structure revealed at Martin Marietta (NYSE: MLM)

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
3

Rhea-AI Filing Summary

MARTIN MARIETTA MATERIALS INC (MLM) reported that LNA Holding SRL is the record holder of 10,953,543 shares of Common Stock, shown as indirectly owned in this initial ownership report. LNA Holding SRL is wholly owned by Kalk en Dolomiet Maatschappij SA, which is a direct and indirect subsidiary of Financiere de Gestions Internationales SCA, whose statutory manager is GPI SA.

Each of these entities may be deemed to share beneficial ownership of the shares held directly by LNA Holding SRL, and the individuals on GPI SA’s board disclaim beneficial ownership of the Common Stock beneficially owned by Financiere de Gestions Internationales SCA.

Positive

  • None.

Negative

  • None.
Insider LNA Holding SRL, Kalk en Dolomiet Maatschappij SA, Financiere de Gestions Internationales SCA, GPI SA
Role 10% Owner | 10% Owner | 10% Owner | 10% Owner
Type Security Shares Price Value
holding Common Stock F1 -- -- --
Holdings After Transaction: Common Stock — 10,953,543 shares (Indirect, See Footnote)
Footnotes (1)
  1. F1. LNA Holding SRL ("LNH") is the record holder of 10,953,543 shares of Common Stock. LNH is a wholly owned subsidiary of Kalk en Dolomiet Maatschappij SA, which is a direct and indirect subsidiary of Financiere de Gestions Internationales SCA ("FGI"). GPI SA is the statutory manager of FGI. As a result, each of the foregoing entities may be deemed to share beneficial ownership of the Common Stock held directly by LNH. GPI SA is managed by a board of directors comprised of Jean-Pierre Berghmans, Elisabeth van der Vaeren, Pascal Rakovsky and Rene Beltjens (acting through its management company Paradocs Ter Sarl), each of whom disclaims beneficial ownership of the Common Stock beneficially owned by FGI.
Common Stock indirectly held 10,953,543 shares Shares of MARTIN MARIETTA MATERIALS INC held of record by LNA Holding SRL
Ownership type Indirect Reported for the 10,953,543 shares of Common Stock
Reporting persons 4 entities LNA Holding SRL, Kalk en Dolomiet Maatschappij SA, Financiere de Gestions Internationales SCA, GPI SA
beneficial ownership financial
"each of the foregoing entities may be deemed to share beneficial ownership"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
ten percent owner regulatory
"each identified as a ten percent owner with respect to the issuer"
statutory manager financial
"GPI SA is the statutory manager of FGI"

FAQ

What does the Form 3 for MLM disclose about LNA Holding SRL’s stake?
It discloses that LNA Holding SRL is the record holder of 10,953,543 shares of Common Stock of MARTIN MARIETTA MATERIALS INC, reported as indirect ownership, with related entities potentially deemed to share beneficial ownership of these shares.

Who are the reporting persons in the MLM Form 3 filing?
The reporting persons are LNA Holding SRL, Kalk en Dolomiet Maatschappij SA, Financiere de Gestions Internationales SCA and GPI SA, each identified as a ten percent owner with respect to MARTIN MARIETTA MATERIALS INC.

How is the ownership of MLM shares structured among the reporting entities?
LNA Holding SRL holds 10,953,543 MLM common shares directly. It is wholly owned by Kalk en Dolomiet Maatschappij SA, which is a direct and indirect subsidiary of Financiere de Gestions Internationales SCA, whose statutory manager is GPI SA, so each may be deemed to share beneficial ownership.

Do the individual directors of GPI SA claim beneficial ownership of MLM shares?
No. The filing states that the GPI SA board members disclaim beneficial ownership of the Common Stock beneficially owned by Financiere de Gestions Internationales SCA, even though GPI SA is the statutory manager of that entity.

Does this MLM Form 3 report any recent share purchases or sales?
No. The entry is characterized as a holding, showing 10,953,543 shares of Common Stock indirectly owned after the reported position, without any buy or sell transaction amounts or prices.

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SEC Form 3
FORM 3UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0104
Estimated average burden
hours per response:0.5
1. Name and Address of Reporting Person*
LNA Holding SRL
(Last)(First)(Middle)
C/O LHOIST GROUP,
RUE CHARLES DUBOIS 28
(Street)
LIMELETTEBE - 1342
(City)(State)(Zip)
BELGIUM
(Country)		2. Date of Event Requiring Statement (Month/Day/Year)
08/21/2026		3. Issuer Name and Ticker or Trading Symbol
MARTIN MARIETTA MATERIALS INC [ MLM ]
3a. Foreign Trading Symbol
5. If Amendment, Date of Original Filed (Month/Day/Year)
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
DirectorX10% Owner
Officer (give title below)Other (specify below)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
XForm filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock10,953,543ISee Footnote(1)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year)3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
1. Name and Address of Reporting Person*
LNA Holding SRL
(Last)(First)(Middle)
C/O LHOIST GROUP,
RUE CHARLES DUBOIS 28
(Street)
LIMELETTEBE - 1342
(City)(State)(Zip)
BELGIUM
(Country)
Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Kalk en Dolomiet Maatschappij SA
(Last)(First)(Middle)
RUE ROBERT STUMPER 7
(Street)
LUXEMBOURGL-2557
(City)(State)(Zip)
LUXEMBOURG
(Country)
Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Financiere de Gestions Internationales SCA
(Last)(First)(Middle)
RUE ROBERT STUMPER 7
(Street)
LUXEMBOURGL-2557
(City)(State)(Zip)
LUXEMBOURG
(Country)
Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
GPI SA
(Last)(First)(Middle)
RUE ROBERT STUMPER 7
(Street)
LUXEMBOURGL-2557
(City)(State)(Zip)
LUXEMBOURG
(Country)
Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
Explanation of Responses:
1. LNA Holding SRL ("LNH") is the record holder of 10,953,543 shares of Common Stock. LNH is a wholly owned subsidiary of Kalk en Dolomiet Maatschappij SA, which is a direct and indirect subsidiary of Financiere de Gestions Internationales SCA ("FGI"). GPI SA is the statutory manager of FGI. As a result, each of the foregoing entities may be deemed to share beneficial ownership of the Common Stock held directly by LNH. GPI SA is managed by a board of directors comprised of Jean-Pierre Berghmans, Elisabeth van der Vaeren, Pascal Rakovsky and Rene Beltjens (acting through its management company Paradocs Ter Sarl), each of whom disclaims beneficial ownership of the Common Stock beneficially owned by FGI.
LNA Holding SRL By: /s/ Frederic Meessen, Proxy Holder08/24/2026
Kalk en Dolomiet Maatschappij SA By: /s/ Philippe Vauthier, Managing-Director08/24/2026
Financiere de Gestions Internationales SCA By: /s/ Philippe Vauthier, Delegate to the Daily Management08/24/2026
GPI SA By: /s/ Philippe Vauthier, Delegate to the Daily Management08/24/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

Source: View Original Filing on SEC EDGAR