Initial Statement of Beneficial Ownership

This filing is an Initial Statement of Beneficial Ownership (Form 3) for Philipp Niemann, reporting owner, related to MARTIN MARIETTA MATERIALS INC. The reporting owner, Philipp Niemann, is identified by CIK 0002149732. The address provided is in Limelette, Belgium. Philipp Niemann is a Director at MARTIN MARIETTA MATERIALS INC. The filing indicates that no securities were owned as of the period of report, August 21, 2026. The signature date was August 24, 2026.