STOCK TITAN

Martin Marietta (NYSE: MLM) CFO reports tax-related share withholding

(Moderate)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Martin Marietta Materials SVP and CFO Michael J. Petro reported a Form 4 transaction in which 368.0000 shares of Common Stock were withheld on August 3, 2026 at $542.2700 per share to satisfy an exercise price or tax obligation. After this disposition, he directly owned 14990.6026 shares.

Positive

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Negative

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Insider Petro Michael J
Role SVP and CFO
Type Security Shares Price Value
Exercise Price or Tax Liability Common Stock 368 $542.27 $200K
Holdings After Transaction: Common Stock — 14,990.6026 shares (Direct)
Shares withheld 368.0000 shares Common Stock used on 2026-08-03 to satisfy exercise price or tax obligation
Price per share $542.2700 Per-share value applied to the 368.0000-share disposition
Shares owned after 14990.6026 shares Direct Common Stock holdings by Michael J. Petro following the transaction
Payment of exercise price or tax liability regulatory
"Transaction code F is described as Payment of exercise price or tax liability"
exercise-price-or-tax-liability disposition financial
"The event is labeled an exercise-price-or-tax-liability disposition in the data"
Rule 10b5-1 regulatory
"The Rule 10b5-1 checkbox on the insider form was left unchecked"
Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.
Form 4 regulatory
"Insider equity transactions are reported to the SEC on Form 4"
Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

What transaction did Martin Marietta Materials (MLM) CFO Michael J. Petro report?

Michael J. Petro reported a disposition where 368.0000 shares of Martin Marietta Materials Common Stock were withheld on August 3, 2026 at $542.2700 per share to satisfy an exercise price or tax obligation, as reflected in his Form 4 filing.

How many MLM shares were withheld from CFO Michael J. Petro and at what price?

The filing shows that 368.0000 shares of Martin Marietta Materials Common Stock were withheld from Michael J. Petro at a price of $542.2700 per share, designated as a payment of an exercise price or tax liability using Common Stock.

How many Martin Marietta Materials (MLM) shares does Michael J. Petro own after this transaction?

After the reported tax or exercise-related disposition, Michael J. Petro directly owned 14990.6026 shares of Martin Marietta Materials Common Stock. This post-transaction ownership figure is disclosed in the Form 4 as his direct holdings following the 368.0000-share withholding event.

What does transaction code F mean in Michael J. Petro’s MLM Form 4?

In this Form 4, transaction code F is described as a payment of exercise price or tax liability by delivering or withholding securities, indicating that 368.0000 shares were used to cover an exercise price or tax obligation rather than being sold in an open-market transaction.

Was Michael J. Petro’s MLM share transaction reported under a Rule 10b5-1 plan?

The document-level Rule 10b5-1 checkbox associated with Michael J. Petro’s Form 4 is not marked as affirmatively checked, so the reported 368.0000-share disposition was not identified in the filing as occurring pursuant to a Rule 10b5-1 trading plan.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Petro Michael J

(Last)(First)(Middle)
4123 PARKLAKE AVENUE

(Street)
RALEIGH NORTH CAROLINA 27612

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
MARTIN MARIETTA MATERIALS INC [ MLM ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
SVP and CFO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/03/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock08/03/2026F368D$542.2714,990.6026D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
/s/ Sara W. Brown, attorney-in-fact08/04/2026
** 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 4 (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 4: SEC 1474 (03-26)