X0508 4 2026-03-01 0000916076 MARTIN MARIETTA MATERIALS INC MLM 0001878191 Petro Michael J 4123 PARKLAKE AVENUE RALEIGH NC 27612 1 SVP and CFO 0 Common Stock 2026-03-01 4 A 0 2960 0 A 15358.6026 D Restricted stock unit award granted under the Martin Marietta Materials, Inc. Amended and Restated Stock-Based Award Plan, which award vests pro rata in three equal installments on the third, fourth and fifth anniversaries of the award date, subject to continued employment and other terms and conditions specified in the award agreement. /s/ Sara W. Brown, attorney-in-fact 2026-03-03