Martin Marietta Materials, Inc. (MLM) — Form SCHEDULE 13G/A: Ownership over 5% (passive) (amendment)

Vanguard Portfolio Management filed a Schedule 13G/A reporting beneficial ownership of 3,304,239 shares of Common Stock of Martin Marietta Materials, Inc. as of 09/30/2026. This represents passive ownership by Vanguard Portfolio Management and its affiliates.