The Bylaws of Martin Marietta Materials, Inc. provide that a Director will retire at the Annual Meeting of Shareholders following the Director's 75th birthday. One of current Directors, Smith W. Davis, reached this mandatory retirement age this year and is not eligible for election at the Annual Meeting for a new term. Mr. Davis has stated that he intends to serve as a Director through the commencement of the 2023 Annual Meeting of shareholders, after which he will retire from the Board.

In light of the retirement of Mr. Davis, the Board of Directors has set the size of the Board at ten effective upon the commencement of the 2023 Annual Meeting.