MLM · Martin Marietta Materials, Inc.

Martin Marietta Materials, Inc. announced the appointment of Christopher W. Samborski as Executive Vice President and Chief Operating Officer, effective May 1, 2026. Mr. Samborski, who joined the company in 2018, most recently served as President of the West and Specialties Divisions, where he was responsible for overall operations and strategic direction. His promotion to COO reflects the company's recognition of his leadership and the strong performance of the divisions under his management. The compensation package includes a base salary of $775,000, target annual incentive of 100% of base salary, target long-term incentive of 260% of base salary, and a one-time restricted stock unit grant valued at $5 million with a long-term vesting schedule. The employment agreement provides enhanced severance benefits, including three times base salary and target bonus for termination without cause or for good reason, and a change of control protection aligning with other executive officers. This appointment signals continuity in leadership and a focus on operational excellence as the company builds on its record performance in 2025.