Donald A. McCunniff - 01 Mar 2026 Form 4 Insider Report for MARTIN MARIETTA MATERIALS INC (MLM)

Role: EVP and CHRO
Signature: /s/ Sara W. Brown, attorney-in-fact
Issuer symbol: MLM
Transactions as of: 01 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 03 Mar 2026, 15:47:26 UTC
Previous filing: 25 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
McCunniff Donald A.	EVP and CHRO	4123 PARKLAKE AVE, RALEIGH	/s/ Sara W. Brown, attorney-in-fact	03 Mar 2026	0001355849

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MLM	Common Stock	Award	$0	+2,960	+65%	$0.000000	7,518	01 Mar 2026	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Restricted stock unit award granted under the Martin Marietta Materials, Inc. Amended and Restated Stock-Based Award Plan, which award cliff vests on the third anniversary of the award date, subject to continued employment and other terms and conditions specified in the award agreement.